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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 10-K
 
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20172019
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from ____________ to ____________
Commission file number: 001-32550
 
WESTERN ALLIANCE BANCORPORATION
(Exact name of registrant as specified in its charter)
 
Delaware 88-0365922
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
One E. Washington Street, Suite 1400Phoenix AZArizona 85004
(Address of principal executive offices) (Zip Code)
(602) (602) 389-3500
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s) Name of each exchange on which registered
Common Stock, $0.0001 Par Value WALNew York Stock Exchange
6.25% Subordinated Debentures due 2056WALA New York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
 
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yesý    No  ¨
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨Noý
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yesý    No  ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yesý    No  ¨
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company, or emerging growth company. See the definitions of “large accelerated filer,” "accelerated filer" "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer ý Accelerated filer ¨
Non-accelerated filer ¨ Smaller reporting company ¨
    Emerging growth company ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý
The aggregate market value of the registrant’s voting stock held by non-affiliates was approximately $4.79$4.28 billion based on the June 30, 20172019 closing price of said stock on the New York Stock Exchange ($49.2044.72 per share).
As of February 16, 2018,24, 2020, Western Alliance Bancorporation had 105,666,960102,479,213 shares of common stock outstanding.
Portions of the registrant’s definitive proxy statement for its 20182020 Annual Meeting of Stockholders are incorporated by reference into Part III of this report.

INDEX
 
  Page
 
  
Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.
   
 
   
Item 5.
Item 6.
Item 6.
Item 7.
Item 7A.
Item 8.
Item 9.
Item 9A.
Item 9B.
   
  
   
Item 10.
Item 11.
Item 12.
Item 13.
Item 14.
   
  
   
Item 15.
Item 16.
   
  





PART I
Forward-Looking Statements
Certain statements contained in this Annual Report on Form 10-K for the fiscal year ended December 31, 20172019 (this “Form 10-K”) are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 (the “Reform Act”). Statements that constitute forward-looking statements within the meaning of the Reform Act are generally identified through the inclusion of words such as “aim,” “anticipate,” “believe,” “drive,” “estimate,” “expect,” “expressed confidence,” “forecast,” “future,” “goals,” “guidance,” “intend,” “may,” “opportunity,” “plan,” “position,” “potential,” “project,” “ seek,” “should,” “strategy,” “target,” “will,” “would” or similar statements or variations of such words and other similar expressions. All statements other than historical fact are “forward-looking statements” within the meaning of the Reform Act, including statements that are related to or are dependent on estimates or assumptions relating to expectations, beliefs, projections, future plans and strategies, anticipated events or trends and similar expressions that are not historical facts. These forward-looking statements reflect the Company's current views about future events and financial performance and involve certain risks, uncertainties, assumptions, and changes in circumstances that may cause the Company's actual results to differ significantly from historical results and those expressed in any forward-looking statement. Factors that may cause actual results to differ materially from those contemplated by such forward-looking statements include, but are not limited to, those described in “Risk Factors” in Item 1A of this Form 10-K. Forward-looking statements speak only as of the date they are made and the Company undertakes no obligation to publicly update or revise any forward-looking statements included in this Form 10-K or to update the reasons why actual results could differ from those contained in such statements, whether as a result of new information, future events or otherwise, except to the extent required by federal securities laws. In light of these risks, uncertainties and assumptions, the forward-looking events discussed in this Form 10-K might not occur, and you should not put undue reliance on any forward-looking statements.

GLOSSARY OF ENTITIES AND TERMS
The acronyms and abbreviations identified below are used in various sections of this Form 10-K, including "Management's Discussion and Analysis of Financial Condition and Results of Operations," in Item 7 and the Consolidated Financial Statements and the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K.10-K:
ENTITIES / DIVISIONS:
AABAlliance Association BankHFFHotel Franchise Finance
ABAAlliance Bank of ArizonaHOA ServicesHomeowner Associations Services
BONBank of NevadaLVSPLas Vegas Sunset Properties
BONBridgeBridge Bank of NevadaTPBTorrey Pines Bank
BridgeCompanyBridge BankWestern Alliance Bancorporation and subsidiariesWA PWI LLCWestern Alliance Public Welfare Investments, LLC
CompanyCSIWestern Alliance Bancorporation and subsidiariesCS Insurance CompanyWAB or BankWestern Alliance Bank
FIBFirst Independent BankWABTWestern Alliance Business Trust
HFFHotel Franchise FinanceWAL or ParentWestern Alliance Bancorporation
TERMS:
ACLAllowance for Credit LossesFRBFederal Reserve Bank
AFSAvailable-for-SaleFVOFair Value Option
ALCOAsset and Liability Management CommitteeGAAPU.S. Generally Accepted Accounting Principles
ALLLAllowance for Loan and Lease LossesGLBAGramm-Leach-Bliley Act
AOCIAccumulated Other Comprehensive IncomeGNMAGovernment National Mortgage Association
APICAdditional paid in capitalGSEGovernment-Sponsored Enterprise
ARRCAlternative Reference Rate CommitteeHFIHeld for Investment
ASCAccounting Standards CodificationHFIHFSHeld for InvestmentSale
ASUAccounting Standards UpdateHFSHTMHeld for SaleHeld-to-Maturity
ATMBasel CommitteeAt-the-MarketBasel Committee on Banking SupervisionHTMICSHeld-to-MaturityInsured Cash Sweep Service
Basel IIIBanking Supervision's December 2010 final capital frameworkICSInsured Cash Sweep Service
Basel CommitteeBasel Committee on Banking SupervisionIRCInternal Revenue Code
BHCABank Holding Company Act of 1956ISDAInternational Swaps and Derivatives Association
BODBoard of DirectorsLIBORITLondon Interbank Offered RateInformation Technology
BOLIBank Owned Life InsuranceLIHTCLIBORLow-Income Housing Tax CreditLondon Interbank Offered Rate
CAMELSCapital Adequacy, Assets, Management Capability, Earnings, Liquidity, SensitivityMBSLIHTCMortgage-Backed SecuritiesLow-Income Housing Tax Credit
Capital RulesThe FRB, the OCC, and the FDIC 2013 approved final rulesMLCMBSManagement Loan CommitteeMortgage-Backed Securities
CCOChief Credit OfficerMOUMemorandum of Understanding
CDARSCertificate Deposit Account Registry ServiceMOUNBLMemorandum of UnderstandingNational Business Lines
CDOCollateralized Debt ObligationNBLNOLNational Business LinesNet Operating Loss
CECLCurrent Expected Credit LossNOLNet Operating Loss
CEOChief Executive OfficerNPVNet Present Value
CET1Common Equity Tier 1NUBILsNet Unrealized Built In Losses
CFOCEOChief FinancialExecutive OfficerNYSENew York Stock Exchange
CFPBCET1Consumer Financial Protection BureauCommon Equity Tier 1OCCOffice of the Comptroller of the Currency
CMOCFOCollateralized Debt ObligationChief Financial OfficerOCIOther Comprehensive Income
CFPBConsumer Financial Protection BureauOFACOffice of Foreign Asset Control
CLOCollateralized Loan ObligationOREOOther Real Estate Owned
CMOCollateralized Mortgage ObligationOTTIOther-than-Temporary Impairment
COSOCommittee of Sponsoring Organizations of the Treadway CommissionOFACPCAOBOffice of Foreign Asset ControlPublic Company Accounting Oversight Board
CRACommunity Reinvestment ActOREOPCIOther Real Estate OwnedPurchased Credit Impaired
CRECommercial Real EstateOTTIPPNROther-than-Temporary ImpairmentPre-Provision Net Revenue
DIFFDIC's Deposit Insurance FundPCIROUPurchased Credit ImpairedRight of use
Dodd-Frank ActThe Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010SBASmall Business Administration
EPSDTAEarnings per shareDeferred Tax AssetSBICSmall Business Investment Company
DTLDeferred Tax LiabilitySBLFSmall Business Lending Fund
EGRRCPAThe Economic Growth, Regulatory Relief, and Consumer Protection ActSECSecurities and Exchange Commission
EPSEarnings per shareSERPSupplemental Executive Retirement Plan
EVEEconomic Value of EquitySBLFSLCSmall Business Lending FundSenior Loan Committee
Exchange ActSecurities Exchange Act of 1934, as amendedSECSOFRSecurities and Exchange CommissionSecured Overnight Funding Rate
FASBFinancial Accounting Standards BoardSERPSRSupplemental Executive Retirement PlanSupervision and Regulation Letters
FCRAFair Credit Reporting Act of 1971SLCTCJASenior Loan CommitteeTax Cuts and Jobs Act of 2017
FDIAFederal Deposit Insurance ActSSAETDRStatement on Standards for Attestation EngagementsTroubled Debt Restructuring
FDICFederal Deposit Insurance CorporationTDRTEBTroubled Debt RestructuringTax Equivalent Basis
FHLBFederal Home Loan BankTEBTSRTax Equivalent BasisTotal Shareholder Return
FHLMCFederal Home Loan Mortgage CorporationUSDAUnited States Department of Agriculture
FICOThe Financing CorporationTSRVIETotal Shareholder ReturnVariable Interest Entity
FRBFNMAFederal Reserve BankNational Mortgage AssociationXBRLeXtensible Business Reporting Language
FRAFederal Reserve Act

Item 1.Business.
Organization Structure and Description of Services
WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.
WAB operates the following full-service banking divisions: ABA, BON, Bridge, FIB, and TPB. The Company also serves business customers through a national platform of specialized financial services including AAB, Corporate Finance, Equity Fund Resources, HFF, Life Sciences Group, Mortgage Warehouse Lending, Public and Nonprofit Finance, Renewable Resource Group, Resort Finance, and Technology Finance.services. In addition, the Company has two non-bank subsidiaries, LVSP, which holdsheld and managesmanaged certain non-performing loansOREO properties, and OREO andCSI, a captive insurance company formed and licensed under the laws of the State of Arizona, CS Insurance Company. CS Insurance Company wasand established as part of the Company's overall enterprise risk management strategy.
WAL also has eight unconsolidated subsidiaries used as business trusts in connection with issuance of trust-preferred securities as described in "Note 9. Qualifying Debt" in Item 8 of this Form 10-K.
Bank Subsidiary
At December 31, 2017,2019, WAL has the following bank subsidiary:
Bank Name Headquarters 
Number of
Locations
 Location Cities 
Total
Assets
 
Net
Loans
 Deposits Headquarters Location Cities 
Total
Assets
 
Net
Loans
 Deposits
       (in millions)     (in millions)
Western Alliance Bank Phoenix,
Arizona
 47 
Arizona: Chandler, Flagstaff, Gilbert, Mesa, Phoenix, Scottsdale, and Tucson
 $20,404.0
 $14,951.1
 $17,231.5
 Phoenix,
Arizona
 
Arizona: Chandler, Flagstaff, Gilbert, Mesa, Phoenix, Scottsdale, and Tucson
 $26,862.7
 $20,955.5
 $23,086.0
Nevada: Carson City, Fallon, Reno, Sparks, Henderson, Las Vegas, Mesquite, and North Las Vegas
Nevada: Carson City, Fallon, Reno, Sparks, Henderson, Las Vegas, Mesquite, and North Las Vegas
California: Beverly Hills, Carlsbad, Costa Mesa, La Mesa, Los Angeles, Menlo Park, Oakland, Palo Alto, Pleasanton, San Diego, San Francisco, and San Jose
California: Beverly Hills, Carlsbad, Costa Mesa, La Mesa, Los Angeles, Menlo Park, Oakland, Palo Alto, Pleasanton, San Diego, San Francisco, and San Jose
 
Other: Atlanta, Georgia; Boston, Massachusetts; and Reston, Virginia
   
Other: Atlanta, Georgia; Boston, Massachusetts; and Reston, Virginia
 
WAB also has the following significant wholly-owned subsidiaries:
Western Alliance Business Trust holds certain investment securities, municipal and non-profit loans, and leases.
WA PWI, LLC holds certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations.
BW Real Estate, Inc. operates as a real estate investment trust and holds certain real estate loans and related securities.
Helios Prime, Inc. holds certain equity interests in renewable energy tax credit transactions.
Market Segments
The Company’s reportable segments are aggregateddefined primarily based onby geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The Company's NBL segments provide specialized banking services to niche markets. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately within the Company's core market areas. The Corporate & Other segment primarily relates toconsists of the Company's Treasury divisioninvestment portfolio, corporate borrowings and also includes other corporate-relatedrelated items, income and expense items not allocated to other reportable segments, and inter-segment eliminations.
The accounting policies of the reported segments are the same as those of the Company as described in "Note 1. Summary of Significant Accounting Policies" in Item 8. All intercompany transactions are eliminated for reporting consolidated results of operations. Loan and deposit accounts are typically assigned directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities with a funds credit provided for the use of this equity as a funding source. Any excess equity not allocated to segments based on risk is assigned to the Corporate & Other segment.

Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segments to the extent that the amounts are directly attributable to those segments. Net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. Net income amounts for each reportable segment are further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, average loan balances, and average deposit balances. Income taxes are applied to each segment based on the effective tax rate for the geographic location of the segment. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.
Lending Activities
General
Through WAB and its banking divisions and operating subsidiaries, the Company provides a variety of financial services to customers, including CRE loans, construction and land development loans, commercial loans, and consumer loans. The Company’s lending has focused primarily on meeting the needs of business customers.
Commercial and Industrial: Commercial and industrial loans are a significant portion of the Company's loan portfolio and include working capital lines of credit, inventory and accounts receivable lines, mortgage warehouse lines, equipment loans and leases, and other commercial loans. Loans to technology companies, tax-exempt municipalities, and not-for-profit organizations are also categorized as commercial and industrial loans.
CRE: Loans to financefund the purchase or refinancing of CRE for investors (non-owner occupied) or owner-occupants make up the majorityowner occupants are a significant portion of the Company's loan portfolio. These CRE loans are secured by multi-family residential properties, professional offices, industrial facilities, retail centers, hotels, and other commercial properties. As of December 31, 20172019 and 2016,2018, 31% and 36% of the Company's CRE loans were owner-occupied. Owner-occupiedowner occupied. Owner occupied CRE loans are loans secured by owner-occupiedowner occupied non-farm nonresidential properties for which the primary source of repayment (more than 50%) is the cash flow from the ongoing operations and activities conducted by the borrower who owns the property. Non-owner occupied CRE loans are CRE loans for which the primary source of repayment is nonaffiliated rental income associated withgenerated from the collateral property.
Construction and Land Development: Construction and land development loans include single family and multi-family residential projects, industrial/warehouse properties, office buildings, retail centers, medical office facilities, and residential lot developments. These loans are primarily originated to experienced local developers with whom the Company has a satisfactory lending history. An analysis of each construction project is performed as part of the underwriting process to determine whether the type of property, location, construction costs, and contingency funds are appropriate and adequate. Loans to finance commercial raw land are primarily to borrowers who plan to initiate active development of the property within two years.
Residential: The Company has a residential mortgage acquisition program, in which it partners with strategic third parties to execute flow and bulk residential loan purchases that meet the Company's goals and underwriting criteria. These loan purchases consist of both conforming and non-conforming loans. Non-conforming loan purchases are considered to be high quality as the borrowers have high FICO scores and the loans generally have low loan-to-values. Residential loans made up 10% of the Company's total loan portfolio as of December 31, 2019, compared to 7% as of December 31, 2018.
Consumer: Limited types of consumer loans are offered to meet customer demand and to respond to community needs. Examples of these consumer loans include:include home equity loans and lines of credit, home improvement loans, personal lines of credit, and loans to individuals for investment purposes. The Company also purchases residential mortgage loans originated by unaffiliated third parties, including related servicing rights and responsibilities.

At December 31, 2017,2019, the Company's loan portfolio totaled $15.09$21.12 billion, or approximately 74%79% of total assets. The following table sets forth the composition of the Company's HFI loan portfolio as of the periods presented: 
 December 31, December 31,
 2017 2016 2019 2018
 Amount Percent Amount Percent Amount Percent Amount Percent
 (dollars in thousands) (dollars in thousands)

                
Commercial and industrial $6,841,381
 45.3% $5,855,786
 44.4% $9,382,043
 44.5% $7,762,642
 43.8%
Commercial real estate - non-owner occupied 3,904,011
 25.9
 3,543,956
 26.9
 5,245,634
 24.8
 4,213,428
 23.8
Commercial real estate - owner occupied 2,241,613
 14.9
 2,013,276
 15.2
 2,316,913
 11.0
 2,325,380
 13.1
Construction and land development 1,632,204
 10.8
 1,478,114
 11.2
 1,952,156
 9.2
 2,134,753
 12.1
Residential real estate 425,940
 2.8
 259,432
 2.0
 2,147,664
 10.2
 1,204,355
 6.8
Consumer 48,786
 0.3
 38,963
 0.3
 57,083
 0.3
 70,071
 0.4
Loans, net of deferred loan fees and costs $15,093,935
 100.0% $13,189,527
 100.0% $21,101,493
 100.0% $17,710,629
 100.0%
Allowance for credit losses (140,050)   (124,704)   (167,797)   (152,717)  
Total loans HFI $14,953,885
   $13,064,823
   $20,933,696
   $17,557,912
  
The Company had no HFS loans as of December 31, 2017, compared to $18.9 million of HFS loans as of December 31, 2016. For additional information concerning loans, see "Note 3. Loans, Leases and Allowance for Credit Losses" of the Consolidated Financial Statements contained herein or "Management"Management's Discussion and Analysis of Financial Condition and Results of Operations—Financial Condition – Loans discussions" in Item 78 of this Form 10-K.
The Company adheres to a specific set of credit standards within its banking subsidiary that are intended to ensure the properappropriate management of credit risk. Furthermore, the Bank's senior management team plays an active role in monitoring compliance with such standards.
Loan originations are subject to a process that includes the credit evaluation of borrowers, utilizing established lending limits, analysis of collateral, and procedures for continual monitoring and identification of credit deterioration. Loan officers actively monitor their individual credit relationships in order to report suspected risks and potential downgrades as early as possible. The WAB BOD approves all material changes to loan policy, as well as lending limit authorities. The Bank's lending policies generally incorporate consistent underwriting standards across all geographic regions in which the Bank operates, customized as necessary to conform to state law and local market conditions. The Bank's credit culture has enabledemphasizes timely identification of troubled credits to allow management to identify troubled credits early, allowing management to take prompt corrective action, when necessary.
Loan Approval Procedures and Authority
The Company's loan approval procedures are executed through a tiered loan limit authorization process, which is structured as follows:
Individual Credit Authorities. The credit approval levels for individual divisional and senior credit officers are set by policy and certain credit administration officers' approval authorities are established on a delegated basis.
Management Loan Committees. Credits in excess of individual divisional or senior credit officer approval authority are submitted to the appropriate divisional or NBL loan committee. The divisional committees consist of members of the Bank's senior management team of each division and the NBL loan committees consist of the Bank's divisional or senior credit officers.
Credit Administration. Credits in excess of the divisional or NBL loan committee approval authority require the additional approval of the Bank's CCO and any credits in excess of the CCO's individual approval authority are submitted to the WAB SLC. In addition, the SLC reviews all other loan approvals to any one new borrower in excess of established thresholds. The SLC is chaired by the WAB CCO and includes the Company’s CEO.
Individual Authorities. The authorization levels for individual loan officers are established on a case-by-case basis. Generally, the more experienced a loan officer, the higher the authorization level. The maximum approval authority for any loan officer is $1.0 million. Certain members of executive management or credit administration may have higher approval authority.
Management Loan Committees. Credits in excess of individual loan limits are submitted to the appropriate region’s MLC. The MLCs consist of members of the senior management team of each region. The MLCs have approval authority up to $7.0 million.
Credit Administration. Credits in excess of the MLC authority are submitted to the WAB SLC. The SLC has approval authority up to established house concentration limits, which range from $15.0 million to $50.0 million, depending on risk grade. SLC approval is also required for new relationships of $12.5 million or greater to borrowers within market footprint, and $5.0 million or greater outside market footprint. The SLC reviews all other loan approvals to any one new borrower of $5.0 million or greater. The SLC is chaired by the WAB CCO and includes the Company’s CEO. Current policy states that over house limit exceptions require unanimous approval of the SLC.
Loans to One Borrower. In addition to the limits set forth above, subject to certain exceptions, state banking laws generally limit the amount of funds that a bank may lend to a single borrower. Under Arizona law, the obligations of one borrower to a

bank generally may not exceed 20% of the bank’s capital, plus an additional 10% of its capital if the additional amounts are fully secured by readily marketable collateral. Arizona law does not specifically require aggregation of loans to affiliated entities in determining compliance with the lending limit. As a matter of longstanding practice, the Arizona Department of Financial Institutions uses the same aggregation analysis as applied to national banks by the OCC.

Concentrations of Credit Risk. The Company's lending policies also establish customer and product concentration limits, which are based on commitment amounts, to control single customer and product exposures. The Company's lending policies have several different measures to limit concentration exposures. Set forth below are the primary segmentation limits and actual measures as of December 31, 2017:2019:
 Percent of Total Capital Percent of Total Capital
 Policy Limit Actual Policy Limit Actual
CRE 435% 250% 435% 232%
Commercial and industrial 400
 278
 400
 289
Construction and land development 85
 66
 85
 59
Residential real estate 100
 17
 100
 66
Consumer 5
 2
 5
 2
Asset Quality
General
To measure asset quality, the Company has instituted a loan grading system consisting of nine different categories. The first five are considered “satisfactory.”satisfactory "pass" ratings. The other four "non-pass" grades range from a “special“Special mention” category to a “loss”“Loss” category and are consistent with the grading systems used by federal banking regulators. All loans are assigned a credit risk grade at the time they are made, and each assigned loan officer reviews the credit with his or her immediate supervisor on a quarterly basis to determine whether a change in the credit risk grade is warranted. In addition, the grading of the Company's loan portfolio is reviewed on a regular basis by its internal Loan Review Department.
Collection Procedure
If a borrower fails to make a scheduled payment on a loan, Bank personnel attempt to remedy the deficiency by contacting the borrower and seeking payment. Contacts generally are made within 15 business days after the payment becomes past due. The Bank maintains regional Special Assets Departments, which generally servicesservice and collectscollect loans rated substandardSubstandard or worse. Each division is responsible for monitoring activity that may indicate an increased risk rating, including, but not limited to, past-dues, overdrafts, and loan agreement covenant defaults. Loans deemed uncollectible are proposed for charge-off.charged-off.
Nonperforming Assets
Nonperforming assets include loans past due 90 days or more and still accruing interest, non-accrual loans, TDR loans, and repossessed assets, including OREO. In general, loans are placed on non-accrual status when the Company determines that ultimate collection of principal and interest is in doubt due to the borrower’s financial condition, collateral value, and collection efforts. A TDR loan is a loan onfor which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. Other repossessed assets resultedresult from loans where the Company has received title or physical possession of the borrower’s assets. The Company generally re-appraises OREO and collateral dependent impaired loans every twelve12 months. The total net gain on sales / valuationsrealized and unrealized gains and losses of repossessed and other assets was $0.1 million, $0.1 million, and $2.1 million fornot significant during each of the years ended December 31, 2017, 2016,2019, 2018, and 2015, respectively. Losses2017. However, losses may be experienced in future periods.
Criticized Assets
Federal bank regulators require banks to classify its assets on a regular basis. In addition, in connection with their examinations of the Bank, examiners have authority to identify problem assets and, if appropriate, re-classify them. A loan grade of six"Special Mention" from the Company's internal loan grading system is utilized to identify potential problem assets and loansloan grades seven through nineof "Substandard," "Doubtful," and "Loss" are utilized to identify actual problem assets.

The following describes the potential and actual problem assets using the Company's internal loan grading system definitions:
"Special Mention" (Grade 6): Generally these are assets that possess weaknesses that warrant management's close attention. These loans may involve borrowers with adverse financial trends, higher debt to equity ratios, or weaker liquidity positions, but not to the degree of being considered a “problem loan” where risk of loss may be apparent.

Loans in this category are usually performing as agreed, although there may be non-compliance with financial covenants.
“Substandard” (Grade 7): These assets are characterized by well-defined credit weaknesses and carry the distinct possibility that the Company will sustain some loss if such weakness or deficiency is not corrected. The Company believes that these loans generally are adequately secured and in the event of a foreclosure action or liquidation, the Company should be protected from loss. All loans 90 days or more past due and all loans on non-accrual are considered at least “substandard,” unless extraordinary circumstances would suggest otherwise.
“Doubtful” (Grade 8): These assets have all the weaknesses inherent in those classified as "substandard" with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable, but because of certain known factors which may work to the advantage and strengthening of the asset (for example, capital injection, perfecting liens on additional collateral and refinancing plans), classification as an estimated loss is deferred until a more precise status may be determined.
“Loss” (Grade 9): These assets are considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practicable or desirable to defer writing off the asset, even though partial recovery may be achieved in the future.
"Special Mention" (Grade 6): Generally these are assets that possess potential weaknesses that warrant management's close attention. These loans may involve borrowers with adverse financial trends, higher debt to equity ratios, or weaker liquidity positions, but not to the degree of being considered a “problem loan” where risk of loss may be apparent. Loans in this category are usually performing as agreed, although there may be non-compliance with financial covenants.
“Substandard” (Grade 7): These assets are characterized by well-defined credit weaknesses and carry the distinct possibility that the Company will sustain some loss if such weakness or deficiency is not corrected. All loans 90 days or more past due and all loans on non-accrual status are considered at least "Substandard," unless extraordinary circumstances would suggest otherwise.
“Doubtful” (Grade 8): These assets have all the weaknesses inherent in those classified as "Substandard" with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable, but because of certain known factors which may work to the advantage and strengthening of the asset (for example, capital injection, perfecting liens on additional collateral and refinancing plans), classification as an estimated loss is deferred until a more precise status may be determined.
“Loss” (Grade 9): These assets are considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practicable or desirable to defer writing off the asset, even though partial recovery may be achieved in the future.
Allowance for Credit Losses
The Company must maintain an adequate allowance for credit losses. The allowance for credit losses is established through a provision for credit losses and is reflected as a reduction in earnings. Loans are charged against the allowance for credit losses when management believes that collectability of the contractual principal or interest is unlikely. Subsequent recoveries, if any, are credited to the allowance. The allowance is reported at an amount believed adequate to absorb probable losses on existing loans that may become uncollectable, based on evaluation of the collectability of loans and prior credit loss experience, together with other factors. For a detailed discussion of the Company’s methodology see “Management’s Discussion and Analysis and Financial Condition – Critical Accounting Policies – Allowance for Credit Losses” in Item 7 of this Form 10-K.
The Company also records estimated losses on unfunded loan commitments, which are classified as non-interest expense, with corresponding reserves in other liabilities.
Investment Activities
WAB and WAL haveThe Company has an investment policy, which was approved by their respective BODs.the BOD. This policy dictates that investment decisions be made based on the safety of the investment, liquidity requirements of the Bank and holding company, potential returns, cash flow targets, and consistency with the Company's interest rate risk management. The Bank’s ALCO is responsible for making securities portfolio decisions in accordance with established policies. The CFO and Treasurer have the authority to purchase and sell securities within specified guidelines. All investment transactions for the Bank and for the holding company were reviewed by the ALCO and BOD.
Generally, the Company's investment policy limits new securities investments to the following: securities backed by the full faith and credit of the U.S. government, including U.S. treasury bills, notes, and bonds, direct obligations of Ginnie Mae, USDA and SBA loans; MBS or CMO issued by a GSE, such as Fannie Mae or Freddie Mac; debt securities issued by a GSE, such as Fannie Mae, Freddie Mac, and the FHLB; tax-exempt securities with a rating of “Single-A” or higher; preferred stock where the issuing company is rated “BBB” or higher; corporate debt with a rating of “Single-A” or better; investment grade corporate bond mutual funds; private label collateralized mortgage obligations with a single rating of “AA” or higher; commercial mortgage-backed securities with a rating of “AAA;” low income housing development bonds; and mandatory purchases of equity securities of the FRB and FHLB. Preferred stock holdings

Investment securities are limitedfurther subject to no more than 10%the following quantitative limits of the Bank’s Common Equity Tier 1; tax-exempt securities are limited to no more than 5% of the Bank's assets; investment grade corporate bond mutual funds are limited to no more than 5% of the Bank's Tier 1 capital; corporate debt holdings are limited to no more than 2.5% of the Bank’s assets; and commercial mortgage-backed securities are limited to an aggregate purchase limit of $50 million.Bank:
Securities CategoryBasis LimitPercentage or Dollar Limit
Preferred stockCommon equity tier 110.0%
Tax-exempt municipal securitiesTotal assets5.0%
Tax-exempt low income housing development bondsTotal capital30.0%
Investment grade corporate bond mutual fundsTier 1 capital5.0%
Corporate debt holdingsTotal assets2.5%
Commercial mortgage-backed securitiesAggregate purchases$50.0 million
The Company no longer purchases (although it may continue to hold previously acquired) CDOs. The Company's policies also govern the use of derivatives, and provide that the Company prudently use derivatives in accordance with applicable regulations as a risk management tool to reduce the overall exposure to interest rate risk, and not for speculative purposes.
As of December 31, 2017, the majority of2019, the Company's investment securities portfolio includes debt and equity securities. Debt securities are classified as AFS or HTM pursuant to ASC Topic 320, Investments and ASC Topic 825, Financial InstrumentsAFSEquity securities are reported at fair value in accordance with Topic 820, Fair Value Measurements and Disclosures.

321, Equity Securities.For further discussion of significant accounting policies related to the Company's investment securities portfolio refer to "Note 1. Summary of Significant Accounting Policies" in Item 8 of this Form 10-K.
As of December 31, 2017,2019, the Company's investment securities portfolio totals $3.75$4.0 billion, representing approximately 18.5%14.8% of the Company's total assets, with the majority of the portfolio invested in AAA/AA+ rated securities. The average duration of the Company's investment securities is 5.34.6 years as of December 31, 2017.2019.
The following table summarizes the carrying value of investment securities portfolio as of December 31, 20172019 and 2016:2018:
 December 31, December 31,
 2017 2016 2019 2018
 Amount Percent Amount Percent Amount Percent Amount Percent
 (dollars in thousands) (dollars in thousands)
Available-for-sale debt securities        
CDO $21,857
 0.6% $13,490
 0.5% $10,142
 0.3% $15,327
 0.4%
Commercial MBS issued by GSEs 109,077
 2.9
 117,792
 4.4
 94,253
 2.4
 100,106
 2.7
Corporate debt securities 103,483
 2.8
 64,144
 2.4
 99,961
 2.5
 99,380
 2.7
CRA investments 50,616
 1.3
 37,113
 1.4
Preferred stock 53,196
 1.4
 94,662
 3.5
Municipal securities 7,773
 0.2
 
 
Private label residential MBS 868,524
 23.1
 433,685
 16.0
 1,129,227
 28.4
 924,594
 25.0
Residential MBS issued by GSEs 1,689,295
 45.0
 1,356,258
 50.1
 1,412,060
 35.6
 1,530,124
 41.4
Tax-exempt 765,960
 20.4
 500,312
 18.5
 1,039,962
 26.2
 841,573
 22.8
Trust preferred securities 28,617
 0.8
 26,532
 1.0
 27,040
 0.7
 28,617
 0.8
U.S. government sponsored agency securities 61,462
 1.6
 56,022
 2.1
 10,000
 0.3
 38,188
 1.0
U.S. treasury securities 2,482
 0.1
 2,502
 0.1
 999
 0.0
 1,984
 0.1
Total debt securities $3,831,417
 96.5% $3,579,893
 96.9%
        
Equity securities        
CRA investments $52,504
 1.3% $51,142
 1.4%
Preferred stock 86,197
 2.2
 63,919
 1.7
Total equity securities $138,701
 3.5% $115,061
 3.1%
        
Total investment securities $3,754,569
 100.0% $2,702,512
 100.0% $3,970,118
 100.0% $3,694,954
 100.0%
As of December 31, 20172019 and 2016,2018, the Company has an investmenthad investments in BOLI of $167.8$174.0 million and $164.5$170.1 million, respectively. The BOLI is used to help offset employee benefit costs. For additional information concerning investments, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Financial Condition – Investments” in Item 7 of this Form 10-K.

Deposit Products
The Company offers a variety of deposit products, including checking accounts, savings accounts, money market accounts, and other types of deposit accounts, including fixed-rate, fixed maturity certificates of deposit. The Company has historically focused on growing its lower cost core customer deposits. As of December 31, 2017,2019, the deposit portfolio was comprised of 44% non-interest bearing37% non-interest-bearing deposits and 56%63% interest-bearing deposits.
The competition for deposits in the Company's markets is strong. The Company has historically been successful in attracting and retaining deposits due to several factors, including its: 1)
knowledgeable and empowered bankers committed to providing personalized and responsive service that translates into long-lastinglong lasting relationships; 2) 
broad selection of cash management services offered; and 3) 
incentives to employees for business development and retention. The Company intends to continue its focus on attracting deposits from its business lending relationships in order to maintain its low cost of funds and improve its net interest margin. The loss of low-cost deposits could negatively impact future profitability.
Deposit balances are generally influenced by national and local economic conditions, changes in prevailing interest rates, internal pricing decisions,competiveness of the Company's offered rates, perceived stability of financial institutions and competition. The Company’s deposits are primarily obtained from communities surrounding its offices or from established relationships. In order to attract and retain deposits, the Company relies on providing quality service and introducing new products and services that meet the needs of its customers.
In 2017, theThe Bank's deposit rates wereare determined through an internal oversight process under the direction of its ALCO. The Bank considers a number of factors when determining deposit rates, including:
current and projected national and local economic conditions and the outlook for interest rates;
local competition;
loan and deposit positions and forecasts, including any concentrations in either; and
FHLB advance rates and rates charged on FHLB advances and other funding sources.

The following table shows the Company's deposit composition: 
 December 31, December 31,
 2017 2016 2019 2018
 Amount Percent Amount Percent Amount Percent Amount Percent
 (in thousands) (in thousands)
Non-interest-bearing demand deposits $7,433,962
 43.9% $5,632,926
 38.7% $8,537,905
 37.4% $7,456,141
 38.9%
Interest-bearing transaction accounts 1,586,209
 9.3
 1,346,718
 9.3
 2,760,865
 12.1
 2,555,609
 13.3
Savings and money market accounts 6,330,977
 37.3
 6,120,877
 42.0
 9,120,747
 40.0
 7,330,709
 38.2
Time certificates of deposit ($250,000 or more) 713,654
 4.2
 609,678
 4.2
 1,426,133
 6.3
 1,009,900
 5.3
Other time deposits 907,730
 5.3
 839,664
 5.8
 950,843
 4.2
 825,088
 4.3
Total deposits $16,972,532
 100.0% $14,549,863
 100.0% $22,796,493
 100.0% $19,177,447
 100.0%
Although the Company does not pay interest to depositors of non-interest bearingnon-interest-bearing accounts, earnings credits are awarded to some account holders, which offset charges incurred by account holders for other services. Earnings credits earned in excess of charges incurred by account holders are recorded in deposit costs as part of non-interest expense and fluctuate as a result of deposit balances eligible for earnings credits, along with the earnings credit rates on these deposit balances.
In addition to the Company's deposit base, it has access to other sources of funding, including FHLB and FRB advances, Federal funds purchased, repurchase agreements, and unsecured lines of credit with other financial institutions. Previously, the Company has also accessed the capital markets through trust preferred, subordinated debt, and Senior Note offerings. For additional information concerning the Company's deposits, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Balance Sheet Analysis – Deposits” in Item 7 of this Form 10-K.
Other Financial Products and Services
In addition to traditional commercial banking activities, the Company offers other financial services to its customers, including:including internet banking, wire transfers, electronic bill payment and presentment, lock box services, courier, and cash management services.

Customer, Product, and Geographic Concentrations
Approximately 52%45% and 53%49% of the Company's loan portfolio at December 31, 20172019 and 2016,2018, respectively, consisted of CRE-secured loans, includingwas represented by CRE loans, and construction and land development loans. The Company’s business is concentrated primarily in the Las Vegas, Los Angeles, Phoenix, Reno, San Francisco, San Jose, San Diego and Tucson metropolitan areas. Consequently, the Company is dependent on the trends of these regional economies.
Although commercial and industrial loans make up approximately 44% of the Company's loan portfolio as of December 31, 2019 and 2018, the Company does not consider this to be a significant concentration risk as these loans are well diversified in terms of customers and product offerings.
The Company's lending activities, including those within its NBLs, are driven in large part by the customers served in the market areas where the Company has offices in the states of Arizona, Nevada, and California. The following table presents a breakout of the in-footprint and out of footprintout-of-footprint distribution of loans:
December 31, 2017 December 31, 2016December 31, 2019 December 31, 2018
In-Footprint Out-of-Footprint Total In-Footprint Out-of-Footprint TotalIn-Footprint Out-of-Footprint Total In-Footprint Out-of-Footprint Total
Arizona19.8% 2.2% 22.0% 20.7% 1.7% 22.4%16.2% 2.0% 18.2% 18.1% 2.5% 20.6%
Nevada12.1
 0.1
 12.2
 13.0
 0.1
 13.1
10.0
 0.7
 10.7
 11.1
 0.2
 11.3
Southern California12.7
 0.1
 12.8
 13.0
 0.4
 13.4
10.7
 
 10.7
 12.2
 
 12.2
Northern California7.8
 0.6
 8.4
 7.9
 0.4
 8.3
5.7
 0.5
 6.2
 6.8
 0.5
 7.3
HOA Services0.2
 0.9
 1.1
 0.2
 0.7
 0.9
0.3
 0.8
 1.1
 0.3
 0.9
 1.2
Hotel Franchise Finance0.8
 8.0
 8.8
 1.0
 8.8
 9.8
2.8
 6.3
 9.1
 1.5
 6.9
 8.4
Public & Nonprofit Finance9.5
 1.0
 10.5
 9.8
 1.2
 11.0
6.8
 1.0
 7.8
 7.8
 1.0
 8.8
Technology & Innovation2.7
 4.6
 7.3
 2.8
 4.8
 7.6
2.4
 4.9
 7.3
 2.4
 4.4
 6.8
Other NBLs6.2
 10.7
 16.9
 6.0
 7.5
 13.5
13.7
 15.2
 28.9
 10.3
 13.1
 23.4
Total71.8% 28.2% 100.0% 74.4% 25.6% 100.0%68.6% 31.4% 100.0% 70.5% 29.5% 100.0%
The Company is not dependent upon any single or limited number of customers, the loss of which would have a material adverse effect on the Company. Neither the Company nor any of its reportable segments have customer relationships that individually account for 10% or more of consolidated or segment revenues. No material portion of the Company’s business is seasonal.

Foreign Operations
The Company does not have significant foreign operations. The Company provides loans, letters of credit, foreign exchange, and other trade-related services to commercial enterprises that conduct business outside the U.S.
Competition
The financial services industry is highly competitive. Many of the Company's competitors are much larger in total assets and capitalization, have greater access to capital markets, and offer a broader range of financial services than the Company can offer, and may have lower cost structures.
This increasingly competitive environment is primarily a result of long-term changes in regulation that made mergers and geographic expansion easier;easier, changes in technology and product delivery systems and web-based tools;tools, and the accelerating pace of consolidation among financial services providers. The Company competes for loans, deposits, and customers with other banks, credit unions, brokerage companies, mortgage companies, insurance companies, finance companies, financial technology firms, and other non-bank financial services providers. This strong competition for deposit and loan products directly affects the interest rates on those products and the terms on which they are offered to consumers.customers.
Technological innovation continues to contribute to greater competition in domestic and international financial services markets.
Mergers between financial institutions have placed additional pressure on banks to consolidate their operations, reduce expenses, and increase revenues to remain competitive. The competitive environment is also significantly impacted by federal and state legislation that makes it easier for non-bank financial institutions to compete with the Company.
Employees
As of December 31, 2017,2019, the Company has 1,7251,835 full-time equivalent employees. The Company’s employees are not represented by a union or covered by a collective bargaining agreement. Management believes that its employee relations are good.
Supervision and Regulation
The Company and its subsidiaries are extensively regulated and supervised under both federal and state laws. A summary description of the laws and regulations whichthat relate to the Company’s operations are discussed in Item 7 of this Form 10-K.

Additional Available Information
The Company maintains an internet website at http://www.westernalliancebancorporation.com. The Company makes available its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to such reports filed or furnished pursuant to Sections 13(a) and 15(d) of the Exchange Act and other information related to the Company free of charge, through this site, as soon as reasonably practicable after it electronically files those documents with, or otherwise furnishes them to the SEC. The SEC maintains an internet site at http://www.sec.gov, infrom which all forms filed electronically may be accessed. The Company’s internet website and the information contained therein are not incorporated ininto this Form 10-K.
In addition, copies of the Company’s annual report will be made available, free of charge, upon written request. 


Item 1A.Risk Factors.
Investing in the Company’s common stock involves various risks, many of which are specific to the Company’s business. The discussion below addresses the material risks and uncertainties, of which the Company is currently aware, that could have a material adverse effect on the Company’s business, results of operations, and financial condition. Other risks that the Company does not know about now, or that the Company does not currently believe are significant, could negatively impact the Company’s business or the trading price of the Company’s securities. See additional discussions about credit, interest rate, market, and litigation risks in "Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations."
Risks Relating to the Company's Business
The Company’s financial performance may be adversely affected by conditions in the financial markets and economic conditions generally.
The Company’s financial performance is highly dependent upon the business environment in the markets where the Company operates and in the U.S. as a whole. Unfavorable or uncertain economic and market conditions can be caused by declines in economic growth, business activity, or investor or business confidence, limitations on the availability or increases in the cost of credit and capital, increases in inflation or interest rates, government shutdowns, the imposition of tariffs on trade, natural disasters, the emergence of widespread health emergencies or pandemics, terrorist attacks, acts of war, or a combination of these or other factors. The specific impact on the Company of many of these factors is difficult to predict, could be long or short term, and may be indirect, such as disruptions in our customers' supply chain or a reduction in the demand for their products or services. A worsening of business and economic conditions generally or specifically in the principal markets in which the Company conducts business could have adverse effects, including the following:
a decrease in deposit balances or the demand for loans and other products and services the Company offers;
an increase in the number of borrowers who become delinquent, file for protection under bankruptcy laws or default on their loans or other obligations to the Company, which could lead to higher levels of nonperforming assets, net charge-offs, and provisions for credit losses;
a decrease in the value of loans and other assets secured by real estate;or in the value of collateral;
a decrease in net interest income from the Company’s lending and deposit gathering activities;
an impairment of certain intangible assets such as goodwill; and
an increase in competition resulting from the increasing consolidation ofwithin the financial services companies.industry.
In the U.S. financial services industry, the commercial soundness of financial institutions is closely interrelated as a result of credit, trading, clearing or other relationships between the institutions. As a result, concerns about, or a default or threatened default by, one institution could lead to significant market-wide liquidity and credit problems, losses or defaults by other institutions. This is sometimes referred to as “systemic risk” and may adversely affect financial intermediaries, such as clearing agencies, clearing houses, banks, securities firms, and exchanges, with which the Company interacts on a daily basis, and therefore could adversely affect the Company.
It is possible that the business environment in the U.S. will experience volatility in the future. There can be no assurance that these conditions will improve in the near term or that conditions will not worsen. Such conditions could adversely affect the Company’s business, results of operations, and financial condition.
The Company is highly dependent on real estate and events that negatively impact the real estate market will hurt the Company’s business and earnings.
The Company is located in areas in which economic growth is largely dependent on the real estate market, and a majority of the Company’s loan portfolio is secured by or otherwise dependent on real estate. The market for real estate is cyclical and the outlook for this sector is uncertain. A decline in real estate activity would likely cause a decline in asset and deposit growth and negatively impact the Company’s earnings and financial condition.

The Company’s loan portfolio consists primarily of CRE and commercial and industrial and CRE loans, which contain concentrations in specialtycertain business lines or product types that have unique risk characteristics and may expose the Company to increased lending risks.
The Company’s loan portfolio consists primarily of CRE and commercial and industrial and CRE loans, which contain material concentrations in specialtycertain business lines or product types, such as mortgage warehouse, real estate, corporate finance, municipal and nonprofit loans, as well as loans in otherspecific business sectors such as technology and innovation. These loan concentrations present unique risks and involve specialized underwriting and management as these loans typicallythey often involve large loan balances to a single borrowersborrower or groupsgroup of

related borrowers. Consequently, an adverse development with respect to one commercial loan or one credit relationship may adversely affect the Company. In addition, based on the nature of lending to these specialty markets, repayment of loans may be dependent upon borrowers receiving additional equity financing or, in some cases, a successful sale to a third party, public offering, or other form of liquidity event. Although each specialty business has dedicated teams in place with specialized skills, tools, and resources available to monitor and evaluate risk specific to the industry, unforeseenUnforeseen adverse events, changes in regulatory policy, or a general decline in the borrower's industry may have a material adverse effect on the Company’s financial condition and results of operations.
Due to the inherent risk associated with accounting estimates, the Company’s allowance for loancredit losses may be insufficient, which could require the Company to raise additional capital or otherwise adversely affect the Company’s financial condition and results of operations.
Credit losses are inherent in the business of making loans. Management makes various assumptions and judgments about the collectability of the Company’s consolidated loan portfolio and maintains an allowance for estimated credit losses based on a number of factors, including the size of the portfolio, asset classifications, economic trends, industry experience and trends, industry and geographic concentrations, estimated collateral values, management’s assessment of the credit risk inherent in the portfolio, historical loan loss experience, and loan underwriting policies. In addition, the Company evaluates all loans identified as problem loans and augments the allowance based upon its estimation of the potential loss associated with those problem loans. Additions to the allowance for credit losses recorded through the Company’s provision for credit losses decreasesdecrease the Company’s net income. If such assumptions and judgments are incorrect, the Company’s actual credit losses may exceed the Company’s allowance for credit losses.
At December 31, 2017,2019, the Company's allowance for credit losses and loss contingency on unfunded loan commitments and letters of credit is $140.1 million.$167.8 million and $9.0 million, respectively. Deterioration in the real estate market or general economic conditions could affect the ability of the Company’s loan customers to service their debt, which could result in additional loan provisions and increases in the Company’s allowance for credit losses. In addition, the Company may be required to record additional loan provisions or increase the Company’s allowance for credit losses based on new information regarding existing loans, input from regulators in connection with their review of the Company’s allowance, changes in regulatory guidance, regulations or accounting standards, identification of additional problem loans, changes in economic outlook, and other factors, both within and outside of the Company’s management’s control. Moreover, because future events are uncertain and because the Company may not successfully identify all deteriorating loans in a timely manner, there may be loans that deteriorate in an accelerated time frame.
Any increases in the provision or allowance for credit losses will result in a decrease in the Company’s net income and, potentially, capital, and may have a material adverse effect on the Company’s financial condition and results of operations. If actual credit losses materially exceed the Company’s allowance for credit losses, the Company may be required to raise additional capital, which may not be available to the Company on acceptable terms or at all. The Company’s inability to raise additional capital on acceptable terms when needed could materially and adversely affect the Company’s financial condition, results of operations, and capital.
Recent changes to the FASB accounting standards will result in a significant change to the Company’s recognition of credit losses and may materially impact the Company’s financial condition or results of operations.
In June 2016, the FASB issued an ASU, "Financial Instruments-Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments," which replaces the currentThe incurred loss model for recognizing credit losses was replaced with an expected loss model referred to as the CECL, model, and which goes into effect for the Companybecame effective on January 1, 2020.2020 and will be reported in the Company's first quarter 2020 financial results. Under the incurred loss model, the Company delays recognition of losses until it is probable that a loss has been incurred. The CECL model represents a dramatic departure from the incurred loss model.  The CECL model will requirerequires the Company to present certain financial assets carried at amortized cost, such as loans held for investment and held-to-maturity debt securities, at the net amount expected to be collected. Additionally, the measurement of expected credit losses will take place at the time the financial asset is first added to the balance sheet (with periodic updates thereafter) and will be based on current conditions, information about past events, including historical experience, and reasonable and supportable forecasts that impact the collectability of the reported amount. As such, the CECL model will materially impact how the Company determines its ALLLACL and may require the Company to significantly increase its ALLL.  Furthermore, the Company’s ALLLACL may experience more fluctuations some of which may be significant. Were the Company required to significantly increase its ALLL, it may negatively impact the Company’s business, earnings, financial condition and results of operations. The Company is currently preparing for the new CECL model and evaluating its impact on the Company’s accounting. While the Company cannot yet determine how significantly transitioning tounder the CECL model, will impact its ALLL, consistent with regulatory expectations set forthwhich may result in interagency guidance issued atsignificant volatility in the end of 2016, the Company expects the new CECL model will require the Company to recognize a one-time cumulative adjustment to the Company’s ALLL in order to fullyprovision for credit losses and, therefore, earnings. Upon transition from the incurred loss model to the CECL model. model, on January 1, 2020, the Company recognized an increase to its allowance for credit losses on loans and unfunded loan commitments of $19 million and $15 million, respectively, and established

an allowance of $3 million on its HTM securities. These increases resulted in a one-time cumulative adjustment to retained earnings of $25 million, which is net of related tax effects. 
The Company could be subject to tax audits, challenges to its tax positions, or adverse changes or interpretations of tax laws.
The Company is subject to federal and applicable state income tax laws and regulations. Income tax laws and regulations are often complex and require significant judgment in determining the Company’s effective tax rate and in evaluating its tax positions. The Company’s determination of its tax liability is subject to review by applicable tax authorities. Any audits or challenges of such determinations may adversely affect the Company’s effective tax rate, tax payments or financial condition.
Recently enacted U.S. tax legislation enacted in late 2017 made significant changes to federal tax law, including the taxation of corporations, by, among other things, reducing the corporate income tax rate, disallowing certain deductions that had previously been allowed, and altering the expensing of capital expenditures. The implementation and evaluation of theseFurther changes in tax laws, changes in interpretations, guidance or regulations that may require significant judgment and substantial planning on behalf of the Company. Thesebe promulgated, or challenges to judgments and plans may requireor actions that the Company may take with respect to take new and different tax positions that if challengedlaws could adversely affectnegatively impact the Company’s effective tax rate, tax payments or financial condition.
In addition, the new tax legislation remains subject to potential amendments, technical corrections, and further regulatory guidance and interpretation, any of which could lessen or increase certain adverse impacts on the Company. Furthermore, as the new tax legislation goes into effect, future changes may occur at the federal or state level that could result in unfavorable adjustments to the Company’s tax liability.Company's business.
Because of the geographic concentration of the Company’s assets, changes in local economic conditions could adversely affect the Company’s business and results of operations.
The Company’s business is primarily concentrated in selected markets in Arizona, California, and Nevada. As a result of this geographic concentration, the Company’s financial condition and results of operations depend largely upon economic conditions in these market areas. Deterioration in economic conditions in these markets could result in one or more of the following: an increase in loan delinquencies and charge-offs; an increase in problem assets and foreclosures; a decrease in the demand for the Company’s products and services; or a decrease in the value of collateral for loans, especially real estate.
The Company’s financial instruments expose the Company to certain market risks and may increase the volatility of earnings and AOCI.
The Company holds certain financial instruments measured at fair value. For those financial instruments measured at fair value, the Company is required to recognize the changes in the fair value of such instruments in earnings or AOCI each quarter. Therefore, any increases or decreases in the fair value of these financial instruments have a corresponding impact on reported earnings or AOCI. Fair value can be affected by a variety of factors, many of which are beyond the Company’s control, including the Company’s credit position, interest rate volatility, capital markets volatility, and other economic factors. Accordingly, the Company is subject to mark-to-market risk and the application of fair value accounting may cause the Company’s earnings and AOCI to be more volatile than would be suggested by the Company’s underlying performance.
If the Company loses a significant portion of its core deposits or a significant deposit relationship, or its cost of funding deposits increases significantly, the Company's liquidity and/or profitability would be adversely impacted.
The Company’s profitabilitysuccess depends in part on successfully attractingits ability to maintain sufficient liquidity to fund its current obligations and retainingsupport loan growth and, specifically, to attract and retain a stable base of relatively low-cost deposits. The competition for these deposits in the Company's markets is strong and customers may demand higher interest rates on their deposits or seek other investments offering higher rates of return. The Company is a participant in the Promontory Interfinancial Network, and offers its reciprocal deposit products, such as CDARS and ICS,through third party networks to customers seeking federal insurance for deposit amounts that exceed the applicable deposit insurance limit at a single institution. The Company also from time to time offers other credit enhancements to depositors, such as FHLB letters of credit and, for certain deposits of public monies, pledges of collateral in the form of readily marketable securities. Any event or circumstance that interferes with or limits the Company's ability to offer these products to customers that require greater security for their deposits, such as a significant regulatory enforcement action or a significant decline in capital levels at the Company's bank subsidiary, could negatively impact the Company's ability to attract and retain deposits. If the Company were to lose a significant deposit relationship or a significant portion of its low-cost deposits, the Company would be required to borrow from other sources at higher rates and the Company's liquidity and profitability would be adversely impacted.

From time to time, the Company has utilized borrowings from the FHLB and the FRB, and there can be no assurance these programs will be available as needed.
As of December 31, 2017,2019, the Company has no borrowings from the FHLB of San Francisco of $390.0 million and none fromor the FRB. InHowever, in the past, the Company has utilized borrowings from the FHLB of San Francisco and the FRB to satisfy its short-term liquidity needs. The Company’s borrowing capacity is generally dependent on the value of its collateral pledged to these entities. These lenders could reduce the Company’s borrowing capacity or eliminate certain types of collateral and could otherwise modify or even terminate their loan programs. Any change or termination could have an adverse effect on the Company’s liquidity and profitability.

The Company's business may be adversely affected by fraud.
As a financial institution, the Company is inherently exposed to a wide range of operational risk in the form ofrisks, including, but not limited to, theft and other fraudulent activity by employees, customers, and other third parties targeting the Company and/or the Company’s customers or data. Such activity may take many forms, including check fraud, electronic fraud, wire fraud, phishing, social engineering and other dishonest acts.
Although the Company devotes substantial resources to maintaining effective policies and internal controls to identify and prevent such incidents, given the persistence and increasing sophistication of possible perpetrators, the Company may experience financial losses or reputational harm as a result of fraud.
A failure in or breach of the Company’s operational or security systems or infrastructure, or those of the Company’s third partythird-party vendors and other service providers, including as a result of cyber-attacks, could disrupt the Company’s businesses, result in the disclosure or misuse of confidential or proprietary information, damage the Company’s reputation, increase the Company’s costs, and cause losses.
The Company’s operations rely on the secure processing, storage, and transmission of confidential and other information. Although the Company takes numerous protective measures to maintain the confidentiality, integrity, and availability of the Company’s and its customers’ information across all geographies and product lines, and endeavors to modify these protective measures as circumstances warrant, the nature of the threats continues to evolve. As a result, the Company’s computer systems, software, and networks and those of the Company’s customers and third partythird-party vendors may be vulnerable to unauthorized payments and account access, loss or destruction of data (including confidential client information), account takeovers, unavailability of service, computer viruses or other malicious code, cyber-attacks, and other events that could have an adverse security impact and result in significant losses to the Company and/or its customers. These threats may originate externally from increasingly sophisticated third parties, including foreign governments, organized criminal groups, and other hackers, andor from outsourced or infrastructure-support providers and application developers, or the threats may originate from within the Company’s organization.
The Company also faces the risk of operational disruption, failure, termination, or capacity constraints of any of the third parties that facilitate the Company’s business activities, including vendors, exchanges, clearing agents, clearing houses, or other financial intermediaries. Such parties could also be the source or cause of an attack on, or breach of, the Company’s operational systems, data or infrastructure. In addition, the Company may be at risk of an operational failure with respect to its customers’ systems. The Company’s risk and exposure to these matters remains heightened because of, among other things, the evolving nature of these threats, the outsourcing of many of the Company’s business operations, and the continued uncertain global economic environment. As cyber threats continue to evolve, the Company may be required to expend significant additional resources to continue to modify or enhance its protective measures or to investigate and remediate any information security vulnerabilities.
The Company maintains insurance policies that it believes provide reasonable coverage at a manageable expense for an institution of the Company’s size and scope with similar technological systems. However, the Company cannot assure that these policies will afford coverage for all possible losses or would be sufficient to cover all financial losses, damages, or penalties, including lost revenues, should the Company experience any one or more of its or a third party’s systems failing or experiencing an attack.
The Company relies on third parties to provide key components of its business infrastructure.
The Company relies on third parties to provide key components for its business operations, such as data processing and storage, recording and monitoring transactions, online banking interfaces and services, internet connections, and network access. While the Company selects these third-party vendors carefully, it does not control their actions. Any problems caused by these third parties, including those resulting from breakdowns or other disruptions in communication services provided by a vendor, failure of a vendor to handle current or higher volumes, cyber-attacks and security breaches at a vendor, failure of a vendor to provide services for any reason, or poor performance by a vendor, could adversely affect the Company’s ability to deliver

products and services to its customers and otherwise conduct its business. Financial or operational difficulties of a third-party vendor could also hurt the Company’s operations if those difficulties interfere with the vendor's ability to serve the Company. Replacing these third partythird-party vendors also could create significant delays and expense. Any of these things could adversely affect the Company’s business and financial performance.
A change in the Company’s creditworthiness could increase the Company’s cost of funding or adversely affect its liquidity.
Market participants regularly evaluate the Company’s creditworthiness and the creditworthiness of the Company’s long-term debt based on a number of factors, some of which are not entirely within the Company’s control, including the Company’s financial strength and conditions within the financial services industry generally. There can be no assurance that the Company's perceived creditworthiness will remain the same. Changes could adversely affect the cost and other terms upon which the Company is able to obtain funding and its access to the capital markets, and could increase the Company’s cost of capital. Likewise, any loss of or

decline in the credit rating assigned to WAB could impair its ability to attract deposits or to obtain other funding sources, or increase its cost of funding.
The CompanyCompany's controls and processes, its reporting systems and procedures, and its operational infrastructure may not be able to keep pace with its growth, by improving its controls and processes, and its reporting systems and procedures, which could cause it to experience compliance and operational problems or lose customers, or incur additional expenditures beyond current projections, any one of which could adversely affect the Company’s financial results.
The Company’s future success will depend on the ability of officers and other key employees to continueeffectively implement solutions designed to implement and improve operational, credit, financial, management and other internal risk controls and processes, andas well as improve reporting systems and procedures, while at the same time maintaining and growing existing businesses and client relationships. The Company may not successfully implement such changes or improvements in an efficient or timely manner, or it may discover deficiencies in its existing systems and controls that adversely affect the Company’s ability to support and grow its existing businesses and client relationships, and could require the Company to incur additional expenditures to expand its administrative and operational infrastructure. If the Company is unable to maintain and implement improvements to its controls, processes, and reporting systems and procedures, the Company may lose customers, experience compliance and operational problems or incur additional expenditures beyond current projections, any one of which could adversely affect the Company’s financial results.
The Company’s expansion strategy may not prove to be successful and its market value and profitability may suffer.
The Company continually evaluates expansion through acquisitions of banks and other financial assets and businesses. Like previous acquisitions by the Company, any future acquisitions will be accompanied by risks commonly encountered in such transactions, including, among other things:
time and expense incurred while identifying, evaluating and negotiating potential acquisitions and transactions;
difficulty in accurately estimating the value of target companies or assets and in evaluating target companiescompanies' or assets’ credit, operations, management, and market risks;
potential payment of a premium over book and market values that may cause dilution of the Company’s tangible book value or earnings per share;
exposure to unknown or contingent liabilities of the target company;
potential exposure to asset quality issues of the target company;
difficulty of integrating the operations and personnel;
potential disruption of the Company’s ongoing business;
failure to retain key personnel at the acquired business;
inability of the Company’s management to maximize its financial and strategic position by the successful implementation of uniform product offerings and the incorporation of uniform technology into the Company’s product offerings and control systems; and
failure to realize any expected revenue increases, cost savings, and other projected benefits from an acquisition.
The Company expects that competition for suitable acquisition candidates may be significant. The Company may compete with other banks or financial service companies with similar acquisition strategies, many of which are larger and have greater financial and other resources. The Company cannot assure that it will be able to successfully identify and acquire suitable

acquisition targets on acceptable terms and conditions, or that it will be able to obtain the regulatory approvals needed to complete any such transactions.
The Company cannot provide any assurance that it will be successful in overcoming these risks or any other problems encountered in connection with acquisitions. Potential regulatory enforcement actions could also adversely affect the Company's ability to engage in certain acquisition activities. The Company’s inability to overcome the risks inherent in the successful completion and integration of acquisitions could have an adverse effect on the achievement of the Company's business strategy.

There are substantial risks and uncertainties associated with the introduction or expansion of lines of business or new products and services within existing lines of business.
From time to time, the Company may implement new lines of business, or offer new products and services within existing lines of business.business, or offer existing products or services to new industries or market segments. There are substantial risks and uncertainties associated with these efforts, particularly in instances where the markets are not fully developed.developed or industries are heavily regulated. In developing and marketing new lines of business and/or new products and services, the Company may invest significant time and resources. Initial timetables for the introduction and development of new lines of business and/or new products or services may not be achieved and price and profitability targets may not prove attainable. External factors, such as compliance with laws and regulations, competitive alternatives, and shifting market preferences or government policies, may also impact the successful implementation of a new line of business, or a new product or service.service or the offering of existing products and services to an emerging industry. Furthermore, any new line of business and/or new product or service could have a significant impact on the effectiveness of the Company’s system of internal controls. Failure to successfully manage these risks in the development and implementation of new lines of business or new products or services could have a material adverse effect on the Company’s business, results of operations, and financial condition.
The Company’s future success depends on its ability to compete effectively in a highly competitive and rapidly evolving market.
The Company faces substantial competition in all phases of its operations from a variety of different competitors. The Company’s competitors, including large commercial banks, community banks, thrift institutions, mutual savings banks, credit unions, finance companies, insurance companies, securities dealers, brokers, mortgage bankers, investment advisors, money market mutual funds, and other financial institutions, compete with lending and deposit-gathering services offered by the Company. Increased competition in the Company’s markets may result in reduced loans and deposits or less favorable pricing.
There is competition for financial services in the markets in which the Company conduct its businesses, including from many local commercial banks, as well as numerous national and regionally based commercial banks. In particular, the Company has experienced intense price and terms competition in some of the lending lines of business and deposits in recent years. Many of these competing institutions have much greater financial and marketing resources than the Company has. Due to their size, larger competitors can achieve economies of scale and may offer a broader range of products and services or more attractive pricing than the Company. In addition, some of the financial services organizations with which the Company competes are not subject to the same degree of regulation as is imposed on bank holding companies and federally insured depository institutions. As a result, these non-bank competitors have certain advantages over the Company in accessing funding and in providing various services.
The banking business in the Company’s primary market areas is very competitive, and the level of competition facing the Company may increase further, which may limit its asset growth and financial results. In particular, the Company's predominate source of revenue is net interest income from its loan portfolio. Therefore, if the Company is unable to compete effectively, including sustaining loan and deposit growth at its historical levels, its business and results of operations may be adversely affected.
The financial services industry also is facing increasing competitive pressure from the introduction of disruptive new technologies, often by non-traditional competitors and financial technology companies. Among other things, technology and other changes are allowing customers to complete financial transactions that historically have involved banks at one or both ends of the transaction. The elimination of banks as intermediaries for certain transactions, as well as further disruption of traditional bank businesses and products by non-banks, could result in the loss of fee income and deposits and otherwise adversely affect our business and results.
The Company’s success is dependent upon its ability to recruit and retain qualified employees, including members of its divisional and business line leadership and management teams.
The Company’s business plan includes and is dependent upon hiring and retaining highly qualified and motivated executives and employees at every level. In particular, the Company’s relative success to date has been partly the result of its management’s ability to identify and retain highly qualified employees in both administrative support roles, as well as those with expertise in certain specialty areas or that have long-standing relationships in their communities.communities or markets. These professionals bring with them valuable knowledge, specialized skills and expertise, and customer relationships and have been an integral part of the Company’s ability to attract deposits and to expand its market share.
Additionally, as part of the Company's strategy, the Company depends on divisional and business line leadership and management teams in each of its significant geographic locations. In addition to their skills and experience as bankers, these persons provide the Company with extensive ties within markets upon which the Company’s competitive strategy is based.

The Company’s ability to retain these highly qualified and motivated persons may be hindered by the fact that it has not entered into employment agreements with most of them. The Company incentivizes employee retention through its equity incentive plans; however, the Company cannot guarantee the effectiveness of its equity incentive plans in retaining these key employees and executives. Were the Company to lose key employees, it may not be able to replace them with equally qualified persons who bring the same knowledge of and ties to the communities and markets within which the Company operates. If the Company is unable to hire or retain qualified employees, it may not be able to successfully execute its business strategy or may incur additional costs to achieve its objectives.
The Company could be harmed if its succession planning is inadequate to mitigate the loss of key members of its senior management team.
The Company believes that its senior management team, including, but not limited to, Robert Sarver, its Executive Chairman and Kenneth Vecchione, its CEO, have contributed greatly to its performance. Mr. Sarver is currently in the process of transitioning to a new role as Executive Chairman, and the current President, Kenneth Vecchione, will become the CEO on April 1, 2018. In addition, the Company from time to time experiences retirements and other changes to its senior management team, including the recent appointment of James Haught as President of the Company effective April 1, 2018.team. The Company's future performance depends on a smooth transition of its senior management, including finding and training highly qualified replacements who are properly equipped to lead the Company. The Company has adopted retention strategies, including equity awards, from which its senior management team benefits in order to achieve its goals, and entered into an employment agreementsagreement with each of Messrs.Mr. Vecchione, and Haught.which expires in 2020. However, the Company cannot assure its succession planning and retention strategies will be effective. Theeffective and the loss of senior management particularly during this transition period, could have an adverse effect on the Company’s business.
The Company's risk management practices may prove to be inadequate or not fully effective.
The Company's risk management framework seeks to mitigate risk and appropriately balance risk and return. The Company has established policies and procedures intended to identify, monitor, and manage the types of risk to which it is subject, including, but not limited to, credit risk, market risk, liquidity risk, operational risk, legal and compliance risk, and reputational risk. A BOD level risk committee approves and reviews the Company's key risk management policies and oversees operation of the Company's risk management framework. Although the Company has devoted significant resources to developing its risk management policies and procedures and expects to continue to do so in the future, these policies and procedures, as well as the Company's risk management techniques, may not be fully effective. In addition, as regulations and the markets in which the Company operates continue to evolve, the Company's risk management framework may not always keep sufficient pace with those changes. If the Company's risk management framework does not effectively identify or mitigate its risks, the Company could suffer unexpected losses and could be materially adversely affected.or other material adverse impact. Management of the Company's risks in some cases depends upon the use of analytical and/or forecasting models. If the models the Company uses to mitigate these risks are inadequate, or are subject to ineffective governance, policies, the Company may incur increased losses. In addition, there may be risks that exist, or that develop in the future, that the Company has not appropriately anticipated, identified, or mitigated.

The Company's internal controls and procedures may fail or be circumvented and the accuracy of the Company's judgments and estimates about financial and accounting matters may impact operating results and financial condition.
The Company's management regularly reviews and updates its internal controlcontrols over financial reporting, disclosure controls and procedures, and corporate governance policies and procedures. Any system of controls and procedures, however well designed and operated, is based in part on certain assumptions and can provide only reasonable, not absolute, assurances that the objectives of the system are met.  Any failure or circumvention of the Company's controls and procedures, or failure to comply with regulations related to controls and procedures, could result in materially inaccurate reported financial statements and/or have a material adverse effect on the Company's business, results of operations, and financial condition. Similarly, the Company's management makes certain estimates and judgments in preparing the Company's financial statements.  The quality and accuracy of those estimates and judgments will impact the Company's operating results and financial condition.
If the Company is unable to understand and adapt to technological change, the Company’s business could be adversely affected.
The financial services industry is continually undergoing rapid technological change with frequent introductions of new technology-driven products and services. The effective use of technology can increase efficiency and enable financial institutions to better serve customers and to reduce costs. However, some new technologies needed to compete effectively result in incremental operating costs. The Company’s future success depends, in part, upon its ability to address the needs of its customers by using technology to provide products and services that will satisfy customer demands, as well as to create additional efficiencies in operations. Many of the Company’s competitors, because of their larger size and available capital, have substantially greater resources to invest in technological improvements. The Company may not be able to effectively implement new technology-driven products and services or be successful in marketing these products and services to its customers. Failure to successfully keep pace with technological change affecting the financial services industry could have a material adverse impact on the Company’s business and, in turn, its financial condition and results of operations.

The markets in which the Company operates are subject to the risk of both natural and manmademan-made disasters.
Many of the real and personal properties securing the Company's loans are located in California. Much of California recently experienced significantexperiences wildfires and mudslides causingfrom time to time that cause significant damage throughout the state. While these wildfires and mudslides did not significantly damage the Company's own properties, it is possible that its borrowers may experience losses as a result, of these natural disasters, which may materially impair their ability to meet the terms of their obligations. California is also prone to other natural disasters, including, but not limited to, drought, earthquakes, flooding, and flooding. Moreover, due to changes in the international political climate, it has been made known that were a foreign nation, such as North Korea, to attack the United States, it would likely target the state of California.mudslides. Additional significant natural or manmademan-made disasters in the state of California or in the Company's other markets could lead to damage or injury to the Company's own properties and/or employees, and could increase the risk that many of its borrowers may experience losses or sustained job interruption, which may materially impair their ability to maintain deposits or meet the terms of their loan obligations. Therefore, additional natural disasters, manmadea man-made disaster or a catastrophic event, or a combination of these or other factors, in any of the Company's markets could have a material adverse effect on the Company's business, financial condition, results of operations, and cash flows.
Risks Related to the Banking Industry
The Company operates in a highly regulated environment and the laws and regulations that govern the Company’s operations, corporate governance, executive compensation, and accounting principles, or changes in them, or the Company’s failure to comply with them, may adversely affect the Company.
The Company is subject to extensive regulation, supervision, and legislation that govern almost all aspects of its operations. Intended to protect customers, depositors, and the DIF, these laws and regulations, among other matters, prescribe minimum capital requirements, impose limitations on the business activities in which the Company can engage, require monitoring and reporting of suspicious activity and of customers who are perceived to present a heightened risk of money laundering or other illegal activity, limit the dividends or distributions that WAB can pay to the Company or that the Company can pay to its stockholders, restrict the ability of affiliates to guarantee the Company’s debt, impose certain specific accounting requirements on the Company that may be more restrictive and may result in greater or earlier charges to earnings or reductions in the Company’s capital than does GAAP, among other things. Compliance with laws and regulations can be difficult and costly, and changes to laws and regulations often impose significant additional compliance costs. To the extent the Company continues to grow larger and become more complex, regulatory oversight and risk and the cost of compliance will likely increase, which may adversely affect the Company. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations - Supervision and Regulation” included in this Form 10-K for a more detailed summary of the regulations and supervision to which the Company are subject.

Changes to the legal and regulatory framework governing the Company’s operations, including the passage and continued implementation of the Dodd-Frank Act and EGRRCPA, have drastically revised the laws and regulations under which the Company operates. In general, bank regulators have increased their focus on risk management and regulatory compliance, and the Company expects this focus to continue. Additional compliance requirements may be costly to implement, may require additional compliance personnel, and may limit the Company’s ability to offer competitive products to its customers.
The Company is also subject to changes in federal and state law, as well as regulations and governmental policies, income tax laws, and accounting principles. Regulations affecting banks and other financial institutions are undergoing continuous review and frequently change, and the ultimate effect of such changes cannot be predicted. Regulations and laws may be modified at any time, and new legislation may be enacted that will affect the Company, WAB, and the Company’s other subsidiaries. Any changes in any federal and state law, as well as regulations and governmental policies, income tax laws, and accounting principles, could affect the Company in substantial and unpredictable ways, including ways that may adversely affect the Company’s business, financial condition, or results of operations. Failure to appropriately comply with any such laws, regulations or principles or an alleged failure to comply, even if the Company acted in good faith or the alleged failure reflects a difference in interpretation, could result in sanctions by regulatory agencies, civil money penalties or damage to the Company’s reputation, all of which could adversely affect the Company’s business, financial condition, or results of operations.

State and federal banking agencies periodically conduct examinations of the Company’s business, including for compliance with laws and regulations, and the Company’s failure to comply with any supervisory actions to which the Company is or becomes subject as a result of such examinations may adversely affect the Company.
State and federal banking agencies periodically conduct examinations of the Company’s business, including for compliance with laws and regulations. If, as a result of an examination, an agency were to determine that the financial condition, capital resources, asset quality, earnings prospects, management, liquidity, or other aspects of any of the Company’s operations had become unsatisfactory, or that any of the Company’s banksCompany or theirits management was in violation of any law or regulation, federal banking agencies may take a number of different remedial or enforcement actions it deems appropriate to remedy such a deficiency. These actions include the power to enjoin “unsafe or unsound” practices, to require affirmative actions to correct any conditions resulting from any violation or practice, to issue an administrative order that can be judicially enforced, to direct an increase in the bank’sCompany’s capital, to restrict the bank’sCompany’s growth, and to assess civil monetary penalties against the bank’sCompany and/or officers or directors, and to remove officers and directors and, ifdirectors. If the FDIC concludes that such conditions cannot be corrected or there is an imminent risk of loss to depositors, toit may terminate the bank’sWAB’s deposit insurance. Under Arizona law, the state banking supervisory authority has many of the same enforcement powers with respect to its state-chartered banks. Finally, the CFPB has the authority to examine the Company and has authority to take enforcement actions, including the issuance of cease-and-desist orders or civil monetary penalties against the Company if it finds that the Company offers consumer financial products and services in violation of federal consumer financial protection laws or in an unfair, deceptive, or abusive manner.
If the Company were unable to comply with regulatory directives in the future, or if the Company were unable to comply with the terms of any future supervisory requirements to which the Company may become subject, then it could become subject to a variety of supervisory actions and orders, including cease and desist orders, prompt corrective actions, MOUs, and/or other regulatory enforcement actions. If the Company’s regulators were to take such supervisory actions, then the Company could, among other things, become subject to restrictions on its ability to make acquisitionenter into acquisitions and develop any new business, as well as restrictions on its existing business, and thebusiness. The Company also could be required to raise additional capital, dispose of certain assets and liabilities within a prescribed period of time, or both. Failure to implement the measures in the time frames provided, or at all, could result in additional orders or penalties from federal and state regulators, which could result in one or more of the remedial actions described above. In the event WABthe Company was ultimately unable to comply with the terms of a regulatory enforcement action, it could ultimately fail and be placed into receivership by the FDIC or the chartering agency. The terms of any such supervisory action and the consequences associated with any failure to comply therewith could have a material negative effect on the Company’s business, operating flexibility, and financial condition.
Uncertainty about the future of LIBOR, and its accepted alternatives, may adversely affect our business.
The United Kingdom Financial Conduct Authority, the agency that regulates LIBOR, has announced it intends to stop compelling banks to submit rates for the calculation of LIBOR after 2021, which may result in the use of LIBOR in financial contracts being phased out by the end of 2021. The ARRC has proposed that the SOFR represents best practice as the alternative to LIBOR for use in derivatives and other financial contracts that are currently indexed to LIBOR. ARRC has proposed a paced market transition plan to SOFR from LIBOR and organizations are currently working on industry wide and company specific transition plans as it relates to derivatives and cash markets exposed to LIBOR. It is not possible at this time to predict what rate or rates may become accepted alternatives to LIBOR, or what the effect of any such changes in views or alternatives may be on the markets for LIBOR-indexed financial instruments. The market transition away from LIBOR to an alternative reference rate, such as the SOFR, is complex and could have a range of adverse effects on our loan and lease and investment portfolios, asset-liability management, business, financial condition and results of operations. LIBOR is the reference rate for many transactions in which the Company lends and borrows money, issues, purchases and sells securities and enters into derivative contracts to manage its or its customers’ risk related to these transactions. Accordingly, management has established a LIBOR transition team to lead the Company in the execution of its project plan. Despite these efforts, the manner and impact of this transition and related developments, as well as the effect of these developments on the Company's funding costs, investment and trading securities portfolios, and business, is uncertain and could have a material adverse impact on the Company's profitability.

Changes in interest rates and increased rate competition could adversely affect the Company’s profitability, business, and prospects.
Most of the Company’s assets and liabilities are monetary in nature, which subjects the Company to significant risks from changes in interest rates and can impact the Company’s net income and the valuation of its assets and liabilities. Increases or decreases in prevailing interest rates could have an adverse effect on the Company’s business, asset quality, and prospects. The Company’sCompany derives substantially all of its revenue from net interest income and, therefore, its operating income and net income depend to a great extent on its net interest margin. Net interest margin is the difference between the interest yields the Company receives on loans, securities, and other earning assets and the interest rates the Company pays on interest bearinginterest-bearing deposits, borrowings, and other liabilities. These rates are highly sensitive to many factors beyond the Company’s control, including competition, general economic conditions, and monetary and fiscal policies of various governmental and regulatory authorities, including the FRB. IfIn a rising rate environment, the rate of interest the Company pays on its interest

bearinginterest-bearing deposits, borrowings, and other liabilities increasesmay increase more quickly than the rate of interest the Company receives on loans, securities, and other earning assets, increases,which could adversely impact the Company’s net interest income and therefore its earnings, would be adversely affected.earnings. The Company’s earnings also could be adversely affected in a declining rate environment if the rates on the Company’s loans and other investments fall more quickly than those on its deposits and other liabilities. Because of the Company's relatively high reliance on net interest income, its revenue and earnings are more sensitive to changes in market rates than other financial institutions that have more diversified sources of revenue. The Company has recently experienced increasedexperiences substantial competition for loans on the basis of interest rates.rates for both loans and deposits.
In addition, loan volumes are affected by market interest rates on loans. Rising interest rates generally are associated with a lower volume of loan originations, while lowerLower interest rates are usually associated with higher loan originations, while rising interest rates are generally associated with a lower volume of loan originations. Conversely, in falling interest rate environments, loan repayment rates will increase and, in rising interest rate environments, loan repayment rates will decline and in falling interest rate environments, loan repayment rates will increase.decline. The Company cannot guarantee that it will be able to minimize interest rate risk. In addition, an increase in the general level of interest rates may adversely affect the ability of certain borrowers to pay the interest on and principal of their obligations.
Interest rates also affect how much money the Company can lend. When interest rates rise, the cost of borrowing increases. Accordingly, changes in market interest rates could materially and adversely affect the Company’s net interest spread,income, asset quality, loan origination volume, business, financial condition, results of operations, and cash flows.
The Company is exposed to risk of environmental liabilities with respect to properties to which the Company obtains title.
Approximately 54%55% of the Company’s loan portfolio at December 31, 20172019 was secured by real estate. In the course of the Company’s business, the Company may foreclose on and take title to real estate, and could be subject to environmental liabilities with respect to these properties. The Company may be held liable to a governmental entity or to third parties for property damage, personal injury, investigation, and clean-up costs incurred by these parties in connection with environmental contamination, or may be required to investigate or clean up hazardous or toxic substances, or chemical releases at a property. The costs associated with investigation or remediation activities could be substantial. In addition, if the Company is the owner or former owner of a contaminated site, the Company may be subject to common law claims by third parties based on damages and costs resulting from environmental contamination emanating from the property. These costs and claims could be substantial and adversely affect the Company’s business and prospects.

Risks Related to the Company's Common Stock
The price of the Company’s common stock may fluctuate significantly in the future.
The price of the Company’s common stock on the New York Stock Exchange constantly changes, and has increased substantially since the U.S. Presidential Election in November 2016.changes. The Company expects that the market price of its common stock will continue to fluctuate and there can be no assurances about the market price for its common stock.
The Company’s stock price may fluctuate as a result of a variety of factors, many of which are beyond the Company’s control. These factors include:
actual or anticipated changes in the political climate;climate or public policy, including international trade policy;
sales of the Company’s equity securities;
the Company’s financial condition, performance, creditworthiness, and prospects;
quarterly variations in the Company’s operating results or the quality of its assets;
operating results that vary from the expectations of management, securities analysts, and investors;
changes in expectations as to the Company’s future financial performance;
announcements of strategic developments, acquisitions, and other material events by the Company or its competitors;
the operating and securities price performance of other companies that investors believe are comparable to the Company;
the credit, mortgage, and housing markets, the markets for securities relating to mortgages or housing, and developments with respect to financial institutions generally;
changes in interest rates and the slope of the yield curve;
changes in national and global financial markets and economies and general market conditions, such as interest or foreign exchange rates, stock, commodity or real estate valuations or volatility and other geopolitical, regulatory or judicial events; and

the Company’s past and future dividend and share repurchase practices.
There may be future sales or other dilution of the Company’s equity, which may adversely affect the market price of the Company’s common stock.
The Company is not restricted from issuing additional common stock, including any securities that are convertible into or exchangeable for, or that represent the right to receive, common stock. The Company also grants a significant number of shares of common stock to employees and directors under the Company’s Incentive Plan each year. The issuance of any additional shares of the Company’s common stock or preferred stock or securities convertible into, exchangeable for or that represent the right to receive common stock, or the exercise of such securities could be substantially dilutive to stockholders of the Company’s common stock. Holders of the Company’s common stock have no preemptive rights that entitle such holders to purchase their pro rata share of any offering of shares of any class or series. Because the Company’s decision to issue securities in any future offering will depend on market conditions, its acquisition activity, and other factors, the Company cannot predict or estimate the amount, timing, or nature of its future offerings. Thus, the Company’s stockholders bear the risk of the Company’s future offerings reducing the market price of the Company’s common stock and diluting their stock holdings in the Company.
There can be no assurance that the Company will continue to declare cash dividends or repurchase stock.
On June 4, 2019, the Company announced that its BOD authorized the initiation of regular quarterly dividends pursuant to which the Company intends to pay dividends on its common stock, subject to quarterly declarations by the BOD. During 2019, the Company declared and paid two quarterly cash dividends of $0.25 per common share. In December 2018, the Company adopted a common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250.0 million of its outstanding common stock through December 2019. During 2019, the Company repurchased an aggregate of 2,822,402 shares of common stock. The common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock.

The Company’s dividend payments and/or stock repurchases may change from time-to-time, and no assurance can be provided that it will continue to declare dividends and/or repurchase stock in any particular amounts or at all. Dividends and/or stock repurchases are subject to capital availability and the discretion of the Company’s BOD, which must evaluate, among other things, whether cash dividends and/or stock repurchases are in the best interest of its stockholders and are in compliance with all applicable laws and any agreements containing provisions that limit the Company’s ability to declare and pay cash dividends and/or repurchase stock. In addition, the amount the Company spends and the number of shares that it is able to repurchase under its stock repurchase program may be further affected by a number of other factors, including the stock price and blackout periods in which the Company is restricted from repurchasing shares. A reduction in or elimination of the Company’s dividend payments, dividend program and/or stock repurchases could have a negative effect on the Company’s stock price.
Offerings of debt, which would be senior to the Company’s common stock upon liquidation, and/or preferred equity securities whichthat may be senior to the Company’s common stock for purposes of dividend distributions or upon liquidation, may adversely affect the market price of the Company’s common stock.
The Company may from time to time issue debt securities, borrow money through other means, or issue preferred stock. From time to time the Company borrows money from the FRB, the FHLB, other financial institutions, and other lenders. At December 31, 2017,2019, the Company had outstanding $175,000,000 of 6.25% subordinated debentures with a maturity date of July 1, 2056, and WAB had outstanding $150,000,000 aggregate principal amount of 5.00% Fixed-to-Floating Rate Subordinated Notes due July 15, 2025. All of these securities or borrowings have priority over the common stock in a liquidation, which could affect the market price of the Company’s stock.
The Company’s BOD is authorized to issue one or more classes or series of preferred stock from time to time without any action on the part of the stockholders. The Company’s BOD also has the power, without stockholder approval, to set the terms of any such classes or series of preferred stock that may be issued, including voting rights, dividend rights, and preferences over the Company’s common stock with respect to dividends or upon the Company’s dissolution, winding-up, and liquidation and other terms. If the Company issues preferred stock in the future that has a preference over its common stock, with respect to the payment of dividends or upon the Company’s liquidation, dissolution, or winding up, or if the Company issues preferred stock with voting rights that dilute the voting power of its common stock and/or the rights of holders of its common stock, the market price of its common stock could be adversely affected.
Anti-takeover provisions could negatively impact the Company’s stockholders.
Provisions of Delaware law and provisions of the Company’s Certificate of Incorporation, as amended, and its Amended and Restated Bylaws could make it more difficult for a third party to acquire control of the Company or have the effect of discouraging a third party from attempting to acquire control of the Company. Additionally, the Company’s Certificate of Incorporation, as amended, authorizes the Company’s BOD to issue additional series of preferred stock and such preferred stock could be issued as a defensive measure in response to a takeover proposal. These provisions could make it more difficult for a third party to acquire the Company even if an acquisition might be in the best interest of the Company’s stockholders.

Item 1B.Unresolved Staff Comments
None.

Item 2.Properties
At December 31, 2017, theThe Company and WAB are headquartered at One E. Washington Street in Phoenix, Arizona. WAB operates 38 domestic branch locations, which includes 6include six executive and administrative offices, of which 20 of these locations are owned and 18 are leased.  The Company also has 8several loan production offices.offices across the United States. In addition, WAB owns and occupies a 36,000 square foot operations facility in Las Vegas, Nevada.  See "Item 1. Business” for location cities. For information regarding rental payments, see "Note 4. Premises and Equipment" of the Consolidated Financial Statements included in this Form 10-K.
Item 3.Legal Proceedings
There are no material pending legal proceedings to which the Company is a party or to which any of its properties are subject. There are no material proceedings known to the Company to be contemplated by any governmental authority. See the “Supervision and Regulation” section of "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K for additional information. From time to time, the Company is involved in a variety of litigation matters in the ordinary course of its business and anticipates that it will become involved in new litigation matters in the future.
Item 4.Mine Safety Disclosures
Not applicable.

PART II
Item 5.Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities.
Market Information
The Company’s common stock began trading on the New York Stock Exchange under the symbol “WAL” on June 30, 2005. The Company has filed, without qualifications, its 20172019 Domestic Company Section 303A CEO Certification regarding its compliance with the NYSE’s corporate governance listing standards. The following table presents the high and low sales prices of the Company’s common stock for each quarterly period for the last two years as reported by The NASDAQ Global Select Market: 
  2017 Quarters 2016 Quarters
  Fourth Third Second First Fourth Third Second First
Range of stock prices:                
High $60.25
 $53.79
 $50.60
 $53.84
 $50.72
 $38.55
 $38.36
 $35.42
Low 51.82
 44.83
 44.64
 45.16
 35.56
 30.69
 29.72
 26.60
Holders
At December 31, 2017,2019, there were approximately 1,4991,476 stockholders of record. This number does not include stockholders who hold shares in the name of brokerage firms or other financial institutions. The Company is not provided the exact number of or identities of these stockholders. There are no other classes of common equity outstanding.
Dividends
WAL is a legal entity separate and distinct from its subsidiaries. As a holding company with limited significant assets other thanDuring the capital stockfourth quarter of its subsidiaries, WAL's ability to pay dividends depends primarily upon the receipt of dividends or other capital distributions from its subsidiaries. The Company's subsidiaries ability to pay dividends to WAL is subject to, among other things, their individual earnings, financial condition, and need for funds, as well as federal and state governmental policies and regulations applicable to WAL and each of those subsidiaries, which limit the amount that may be paid as dividends without prior approval. See the additional discussion in the “Supervision and Regulation” section of this report for information regarding restrictions on the ability to pay cash dividends. In addition, the terms and conditions of other securities the Company issues may restrict its ability to pay dividends to holders of2019, the Company's common stock. For example, if any required payments on outstanding trust preferred securities are not made, WAL would be prohibited from paying cash dividends on its common stock. WAL has never paidBoard of Directors approved a cash dividend of $0.25 per share. The dividend payment to shareholders totaled $25.6 million and was paid on its common stock and currently has no plans to pay dividends in the future.November 29, 2019.
Share Repurchases
The following table provides information about the Company's purchases of equity securities that are registered by the Company pursuant to Section 12 of the Exchange Act for the periods indicated.indicated:
  (a) (b) (c) (d)
  
Total Number of Shares
Purchased (1)
 Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs 
Approximate Dollar Value of Shares That May Yet to be Purchased Under the Plans or Programs(2)
10/1/2017 through 10/31/2017 1,499
 $56.25
 
 $
11/1/2017 through 11/30/2017 92
 53.42
 
 
12/1/2017 through 12/31/2017 1,361
 58.17
 
 
Total 2,952
 $57.05
 
 $
  
Total Number of Shares
Purchased (1)(2)
 Average Price Paid Per Share 
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2)
 Approximate Dollar Value of Shares That May Yet to be Purchased Under the Plans or Programs
October 2019 21,998
 $48.80
 20,000
 $97,874,800
November 2019 44,399
 51.43
 44,399
 95,591,561
December 2019 24,530
 53.23
 24,400
 94,293,079
Total 90,927
 $51.28
 88,799
 $94,293,079


(1)All sharesShares purchased during the period outside of the publicly announced repurchase program were transferred to the Company from employees in satisfaction of minimum tax withholding obligations associated with the vesting of restricted stock awards during the period.
(2)On December 12, 2018, the Company announced that it had adopted a common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250 million of its shares of common stock through December 31, 2019. The Company has not announced ahad $94.3 million in authorized common stock repurchase plan relatingcapacity that expired under the original program as of December 31, 2019. The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock.



Performance Graph
The following graph summarizes a five year comparison of the cumulative total returns for the Company’s common stock, the Standard & Poor’s 500 stock index and the KBW Regional Banking Total Return Index, each of which assumes an initial value of $100.00 on December 31, 20122014 and reinvestment of dividends.
chart-02f3fd7625ee5b2fbe8a01.jpg


Item 6.Selected Financial Data.
The following selected financial data have been derived from the Company’s consolidated financial condition and results of operations, as of and for the years ended December 31, 2019, 2018, 2017, 2016, 2015, 2014, and 2013,2015, and should be read in conjunction with the Consolidated Financial Statements and the related notes included elsewhere in this report: 
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (in thousands) (in thousands)
Results of Operations:                    
Interest income $845,513
 $700,506
 $525,144
 $416,379
 $362,655
 $1,225,045
 $1,033,483
 $845,513
 $700,506
 $525,144
Interest expense 60,849
 43,293
 32,568
 31,486
 29,760
 184,633
 117,604
 60,849
 43,293
 32,568
Net interest income 784,664
 657,213
 492,576
 384,893
 332,895
 1,040,412
 915,879
 784,664
 657,213
 492,576
Provision for credit losses 17,250
 8,000
 3,200
 4,726
 13,220
 18,500
 23,000
 17,250
 8,000
 3,200
Net interest income after provision for credit losses 767,414
 649,213
 489,376
 380,167
 319,675
 1,021,912
 892,879
 767,414
 649,213
 489,376
Non-interest income 45,344
 42,915
 29,768
 24,651
 22,197
 65,095
 43,116
 45,344
 42,915
 29,768
Non-interest expense 360,941
 330,949
 260,606
 207,319
 196,216
 482,781
 425,667
 360,941
 330,949
 260,606
Income from continuing operations before provision for income taxes 451,817
 361,179
 258,538
 197,499
 145,656
Income before provision for income taxes 604,226
 510,328
 451,817
 361,179
 258,538
Income tax expense 126,325
 101,381
 64,294
 48,390
 29,830
 105,055
 74,540
 126,325
 101,381
 64,294
Income from continuing operations 325,492
 259,798
 194,244
 149,109
 115,826
Loss from discontinued operations, net of tax 
 
 
 (1,158) (861)
Net income $325,492
 $259,798
 $194,244
 $147,951
 $114,965
 $499,171
 $435,788
 $325,492
 $259,798
 $194,244

 Year Ended December 31, As of and for the Year Ended December 31,
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (dollars in thousands, except per share data) (dollars in thousands, except per share data)
Per Share Data:                    
Earnings per share available to common stockholders - basic $3.12
 $2.52
 $2.05
 $1.69
 $1.33
 $4.86
 $4.16
 $3.12
 $2.52
 $2.05
Earnings per share available to common stockholders - diluted 3.10
 2.50
 2.03
 1.67
 1.31
 4.84
 4.14
 3.10
 2.50
 2.03
Earnings per share from continuing operations - basic 3.12
 2.52
 2.05
 1.70
 1.34
Earnings per share from continuing operations - diluted 3.10
 2.50
 2.03
 1.69
 1.32
Dividends paid per share 0.50
 
 
 
 
Book value per common share 21.14
 18.00
 15.44
 10.49
 8.20
 29.42
 24.90
 21.14
 18.00
 15.44
Tangible book value per share (1) 18.31
 15.17
 12.54
 10.21
 7.90
Tangible book value per share1
 26.54
 22.07
 18.31
 15.17
 12.54
Shares outstanding at period end 105,487
 105,071
 103,087
 88,691
 87,186
 102,524
 104,949
 105,487
 105,071
 103,087
Weighted average shares outstanding - basic 104,179
 103,042
 94,570
 86,693
 85,682
 102,667
 104,669
 104,179
 103,042
 94,570
Weighted average shares outstanding - diluted 104,997
 103,843
 95,219
 87,506
 86,541
 103,133
 105,370
 104,997
 103,843
 95,219
Selected Balance Sheet Data:                    
Cash and cash equivalents $416,768
 $284,491
 $224,640
 $164,396
 $305,514
 $434,596
 $498,572
 $416,768
 $284,491
 $224,640
Investment securities and money market investments 3,754,569
 2,702,512
 1,984,126
 1,522,546
 1,659,370
 3,970,118
 3,694,961
 3,754,569
 2,702,512
 1,984,126
Loans, net of deferred loan fees and costs 15,093,935
 13,208,436
 11,136,663
 8,398,265
 6,801,415
 21,123,296
 17,710,629
 15,093,935
 13,208,436
 11,136,663
Allowance for credit losses 140,050
 124,704
 119,068
 110,216
 100,050
 167,797
 152,717
 140,050
 124,704
 119,068
Total assets 20,329,085
 17,200,842
 14,275,089
 10,600,498
 9,307,342
 26,821,948
 23,109,486
 20,329,085
 17,200,842
 14,275,089
Total deposits 16,972,532
 14,549,863
 12,030,624
 8,931,043
 7,838,205
 22,796,493
 19,177,447
 16,972,532
 14,549,863
 12,030,624
Other borrowings 390,000
 80,000
 150,000
 390,263
 341,096
 
 491,000
 390,000
 80,000
 150,000
Qualifying debt 376,905
 367,937
 210,328
 40,437
 41,858
 393,563
 360,458
 376,905
 367,937
 210,328
Total stockholders' equity 2,229,698
 1,891,529
 1,591,502
 1,000,928
 855,498
 3,016,748
 2,613,734
 2,229,698
 1,891,529
 1,591,502
Selected Other Balance Sheet Data:                    
Average assets $18,869,553
 $16,134,263
 $12,420,803
 $9,891,109
 $8,500,324
 $24,914,123
 $21,246,315
 $18,869,553
 $16,134,263
 $12,420,803
Average earning assets 17,770,939
 15,117,364
 11,621,977
 9,270,465
 7,887,584
 23,586,512
 20,064,545
 17,770,939
 15,117,364
 11,621,977
Average stockholders' equity 2,079,287
 1,770,914
 1,323,952
 964,131
 798,497
 2,845,379
 2,411,709
 2,079,287
 1,770,914
 1,323,952
Selected Financial and Liquidity Ratios:                    
Return on average assets 1.72% 1.61% 1.56 % 1.50 % 1.35% 2.00% 2.05% 1.72% 1.61% 1.56 %
Return on average tangible common equity (1) 18.31
 17.71
 17.83
 18.52
 18.28
Return on average tangible common equity1
 19.60
 20.64
 18.31
 17.71
 17.83
Net interest margin 4.65
 4.58
 4.51
 4.42
 4.39
 4.52
 4.68
 4.65
 4.58
 4.51
Loan to deposit ratio 88.93
 90.78
 92.57
 94.03
 86.77
 92.66
 92.35
 88.93
 90.78
 92.57
Capital Ratios:                    
Tier 1 leverage ratio 10.3% 9.9% 9.8 % 9.7 % 9.8% 10.6% 10.9% 10.3% 9.9% 9.8 %
Tier 1 capital ratio 10.8
 10.5
 10.2
 10.5
 11.1
 10.9
 11.1
 10.8
 10.5
 10.2
Total capital ratio 13.3
 13.2
 12.2
 11.7
 12.4
 12.8
 13.2
 13.3
 13.2
 12.2
Average equity to average assets 11.0
 11.0
 10.7
 9.7
 9.4
Selected Asset Quality Ratios:                    
Net charge-offs (recoveries) to average loans outstanding 0.01% 0.02%��(0.06)% (0.07)% 0.14% 0.02% 0.06% 0.01% 0.02% (0.06)%
Non-accrual loans to gross organic loans 0.29
 0.31
 0.44
 0.81
 1.11
Non-accrual loans to gross loans 0.27
 0.16
 0.29
 0.31
 0.44
Non-accrual loans and repossessed assets to total assets 0.36
 0.51
 0.65
 1.18
 1.53
 0.26
 0.20
 0.36
 0.51
 0.65
Loans past due 90 days or more and still accruing to gross loans 0.00
 0.01
 0.03
 0.06
 0.02
 
 0.00
 0.00
 0.01
 0.03
Allowance for credit losses to gross loans 0.93
 0.95
 1.07
 1.31
 1.47
 0.80
 0.86
 0.93
 0.95
 1.07
Allowance for credit losses to non-accrual loans 318.84
 309.65
 246.10
 162.90
 132.20
 299.81
 550.41
 318.84
 309.65
 246.10
1 See Non-GAAP Financial Measures section beginning on page 31.33.



Item 7.Management's DiscussionsDiscussion and Analysis of Financial Condition and Results of Operations.
The following discussion and analysis is designed to provide insight on the financial condition and results of operations of Western Alliance Bancorporation and its subsidiaries and should be read in conjunction with “Item 8. Financial Statements and Supplementary Data.” This discussion and analysis contains forward-looking statements that involve risk, uncertainties, and assumptions. Certain risks, uncertainties, and other factors, including, but not limited to, those set forth under “Forward-Looking Statements” at the beginning of Part I of this Form 10-K and those discussed in Part I, Item 1A of this Form 10-K under the heading "Risk Factors," may cause actual results to differ materially from those projected in the forward-looking statements.
For a comparison of the 2018 results to the 2017 results and other 2017 information not included herein, refer to the "Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2018.
Financial Overview and Highlights
WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.
WAB operates the following full-service banking divisions: ABA, BON and FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services including AAB, Corporate Finance, Equity Fund Resources, HFF, Life Sciences Group, Mortgage Warehouse Lending, Public and Nonprofit Finance, Renewable Resource Group, Resort Finance, and Technology Finance.services.
Financial ResultResults Highlights of 2017
Net income available to common stockholders of $325.5 million for 2017, compared to $259.8 million for 2016
Diluted earnings per share of $3.10 for 2017, compared to $2.50 per share for 2016
2019
Net income of $499.2 million for 2019, compared to $435.8 million for 2018
Diluted earnings per share of $4.84 for 2019, compared to $4.14 per share for 2018
Net operating revenue of $827.7 million,$1.1 billion, constituting year-over-year growth of 18.4%13.1%, or $128.6$127.0 million, compared to an increase in operating non-interest expenses of 13.3%14.9%, or $42.4$62.2 million1
Operating PPNR increased $86.2$64.8 million to $466.6$618.3 million, compared to $380.4$553.5 million in 201620181
Income tax expense increased $24.9$30.5 million to $126.3$105.1 million, compared to $101.4$74.5 million in 20162018
Total loans of $15.09 billion, up $1.89 billion from December 31, 2016
Total deposits of $16.97 billion, up $2.42 billion from December 31, 2016
Stockholders' equity of $2.23 billion, an increase of $338.2 million from December 31, 2016
Nonperforming assets (nonaccrual loans and repossessed assets) decreased to 0.36% of total assets, from 0.51% at December 31, 2016
Total loans of $21.1 billion, up $3.4 billion from December 31, 2018
Total deposits of $22.8 billion, up $3.6 billion from December 31, 2018
Stockholders' equity of $3.0 billion, an increase of $403.0 million from December 31, 2018
Nonperforming assets (nonaccrual loans and repossessed assets) increased to 0.26% of total assets, from 0.20% at December 31, 2018
Net loan charge-offs to average loans outstanding of 0.01%0.02% for 2017,2019, compared to 0.02%0.06% for 2016
Net interest margin of 4.65% in 2017, compared to 4.58% in 2016
Return on average assets of 1.72% for 2017, compared to 1.61% for 20162018
Net interest margin of 4.52% in 2019, compared to 4.68% in 2018
Return on average assets of 2.00% for 2019, compared to 2.05% for 2018
Tangible common equity ratio of 9.6%10.3%, compared to 9.4%10.2% at December 31, 201620181
Tangible book value per share, net of tax, of $18.31,$26.54, an increase of 20.7%20.3% from $15.17$22.07 at December 31, 201620181
Operating efficiency ratio of 41.5%42.7% in 2017,2019, compared to 43.4%41.9% in 201620181 
The impact to the Company from these items, and others of both a positive and negative nature, are discussed in more detail below as they pertain to the Company’s overall comparative performance for the year ended December 31, 2017.2019.


1 See Non-GAAP Financial Measures section beginning on page 31.

33.

As a bank holding company, management focuses on key ratios in evaluating the Company's financial condition and results of operations.
Results of Operations and Financial Condition
A summary of the Company's results of operations, financial condition, and selected metrics are included in the following tables: 
  Year Ended December 31,
  2017 2016 2015
  (dollars in thousands, except per share amounts)
Net income available to common stockholders $325,492
 $259,798
 $193,494
Earnings per share available to common stockholders - basic 3.12
 2.52
 2.05
Earnings per share available to common stockholders - diluted 3.10
 2.50
 2.03
Return on average assets 1.72% 1.61% 1.56%
Return on average tangible common equity (1) 18.31
 17.71
 17.83
Net interest margin 4.65
 4.58
 4.51
Operating efficiency ratio (1) 41.51
 43.42
 45.85
  Year Ended December 31,
  2019 2018 2017
  (dollars in thousands, except per share amounts)
Net income $499,171
 $435,788
 $325,492
Earnings per share - basic 4.86
 4.16
 3.12
Earnings per share - diluted 4.84
 4.14
 3.10
Return on average assets 2.00% 2.05% 1.72%
Return on average tangible common equity1
 19.60
 20.64
 18.31
Net interest margin 4.52
 4.68
 4.65
Operating efficiency ratio1
 42.68
 41.93
 41.51
 December 31, December 31,
 2017 2016 2019 2018
 (in thousands) (in thousands)
Total assets $20,329,085
 $17,200,842
 $26,821,948
 $23,109,486
Total loans, net of deferred loan fees and costs 15,093,935
 13,208,436
 21,123,296
 17,710,629
Securities and money market investments 3,754,569
 2,702,512
 3,970,118
 3,694,961
Total deposits 16,972,532
 14,549,863
 22,796,493
 19,177,447
Borrowings 390,000
 80,000
Other borrowings 
 491,000
Qualifying debt 376,905
 367,937
 393,563
 360,458
Stockholders' equity 2,229,698
 1,891,529
 3,016,748
 2,613,734
Tangible common equity, net of tax (1) 1,931,648
 1,593,584
Tangible common equity, net of tax1
 2,721,061
 2,316,464
1 See Non-GAAP Financial Measures section beginning on page 31.33.
Asset Quality
For all banks and bank holding companies, asset quality plays a significant role in the overall financial condition of the institution and results of operations. The Company measures asset quality in terms of non-accrual loans as a percentage of gross loans and net charge-offs as a percentage of average loans. Net charge-offs are calculated as the difference between charged-off loans and recovery payments received on previously charged-off loans. The following table summarizes the Company's key asset quality metrics: 
 At or for the Year Ended December 31, At or for the Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (dollars in thousands) (dollars in thousands)
Non-accrual loans $43,925
 $40,272
 $48,381
 $55,968
 $27,746
 $43,925
Repossessed assets 28,540
 47,815
 43,942
 13,850
 17,924
 28,540
Non-performing assets 114,939
 142,791
 166,058
 98,174
 82,722
 114,939
Loans past due 90 days and still accruing 43
 1,067
 3,028
 
 594
 43
Non-accrual loans to gross organic loans 0.29% 0.31% 0.44 %
Non-accrual loans to gross loans 0.27% 0.16% 0.29%
Nonaccrual and repossessed assets to total assets 0.36
 0.51
 0.65
 0.26
 0.20
 0.36
Loans past due 90 days and still accruing to gross loans 0.00
 0.01
 0.03
 
 0.00
 0.00
Allowance for credit losses to gross loans 0.93
 0.94
 1.07
 0.80
 0.86
 0.93
Allowance for credit losses to non-accrual loans 318.84
 309.65
 246.10
 299.81
 550.41
 318.84
Net charge-offs (recoveries) to average loans outstanding 0.01
 0.02
 (0.06)
Net charge-offs to average loans outstanding 0.02
 0.06
 0.01

Asset and Liability Growth
The Company’s assets and liabilities are comprised primarily of loans and deposits. Therefore, the ability to originate new loans and attract new deposits is fundamental to the Company’s growth.
Total assets increased to $20.33$26.8 billion at December 31, 20172019 from $17.20$23.1 billion at December 31, 2016.2018. The increase in total assets of $3.13$3.7 billion, or 18.2%16.1%, relates primarily to organic loan growth of $1.89 billion and an increase in cash and cash equivalents and investment securities of $1.18 billion resulting from increased deposits. Total loans, including HFS loans, increased by $1.89$3.4 billion or 14.3%19.3%, to $15.09$21.1 billion as of December 31, 2017,2019, compared to $13.21$17.7 billion as of December 31, 2016.2018. The increase in loans from December 31, 2018 was driven by commercial and industrial loans of $1.6 billion, CRE non-owner occupied loans of $1.0 billion, and residential real estate loans of $943.3 million. Total deposits increased $2.42$3.6 billion, or 16.7%18.9%, to $16.97$22.8 billion as of December 31, 20172019 from $14.55$19.2 billion as of December 31, 2016.2018. The increase in deposits from December 31, 2018 was driven by an increase in savings and money market deposits of $1.8 billion, non-interest-bearing demand deposit of $1.1 billion, and certificates of deposits of $542.0 million from December 31, 2018.
RESULTS OF OPERATIONS
The following table sets forth a summary financial overview for the comparable periods:
 Year Ended December 31, Increase Year Ended December 31, Increase Year Ended December 31, Increase
 2017 2016 (Decrease) 2016 2015 (Decrease) 2019 2018 (Decrease)
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Consolidated Income Statement Data:Consolidated Income Statement Data:          Consolidated Income Statement Data:    
Interest income $845,513
 $700,506
 $145,007
 $700,506
 $525,144
 $175,362
 $1,225,045
 $1,033,483
 $191,562
Interest expense 60,849
 43,293
 17,556
 43,293
 32,568
 10,725
 184,633
 117,604
 67,029
Net interest income 784,664
 657,213
 127,451
 657,213
 492,576
 164,637
 1,040,412
 915,879
 124,533
Provision for credit losses 17,250
 8,000
 9,250
 8,000
 3,200
 4,800
 18,500
 23,000
 (4,500)
Net interest income after provision for credit losses 767,414
 649,213
 118,201
 649,213
 489,376
 159,837
 1,021,912
 892,879
 129,033
Non-interest income 45,344
 42,915
 2,429
 42,915
 29,768
 13,147
 65,095
 43,116
 21,979
Non-interest expense 360,941
 330,949
 29,992
 330,949
 260,606
 70,343
 482,781
 425,667
 57,114
Income before provision for income taxes 451,817
 361,179
 90,638
 361,179
 258,538
 102,641
 604,226
 510,328
 93,898
Income tax expense 126,325
 101,381
 24,944
 101,381
 64,294
 37,087
 105,055
 74,540
 30,515
Net income 325,492
 259,798
 65,694
 259,798
 194,244
 65,554
 $499,171
 $435,788
 $63,383
Net income available to common stockholders $325,492
 $259,798
 $65,694
 $259,798
 $193,494
 $66,304
Earnings per share available to common stockholders - basic $3.12
 $2.52
 $0.60
 $2.52
 $2.05
 $0.47
Earnings per share available to common stockholders - diluted $3.10
 $2.50
 $0.60
 $2.50
 $2.03
 $0.47
Earnings per share - basic $4.86
 $4.16
 $0.70
Earnings per share - diluted $4.84
 $4.14
 $0.70
Non-GAAP Financial Measures
The following discussion and analysis contains financial information determined by methods other than those prescribed by GAAP. The Company's management uses these non-GAAP financial measures in their analysis of the Company's performance. These measurements typically adjust GAAP performance measures to exclude the effects of certain significant activities or transactions that, in management's opinion, do not reflect recurring period-to-period comparisons of the Company's performance. Management believes presentation of these non-GAAP financial measures provides useful supplemental information that is essential to a complete understanding of the operating results of the Company's core businesses. Since the presentation of these non-GAAP performance measures and their impact differ between companies, these non-GAAP disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies.
Operating Pre-Provision Net Revenue
Operating PPNR is defined by the Federal Reserve in SR 14-3, which requires companies subject to the rule to project PPNR over the planning horizon for each of the economic scenarios defined annually by the regulators. Banking regulations define PPNR as net interest income plus non-interest income less non-interest expense. Management has further adjusted this metric to exclude any non-recurring or non-operational elements of non-interest income or non-interest expense, which are outlined in the table below. Management feelsbelieves that this is an important metric as it illustrates the underlying performance of the Company, it enables investors and others to assess the Company's ability to generate capital to cover credit losses through the credit cycle, and provides consistent reporting with a key metric used by bank regulatory agencies.

The following table shows the components of operating PPNR for the years ended December 31, 2017, 2016,2019, 2018, and 2015:2017:
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands) (in thousands)
Total non-interest income $45,344
 $42,915
 $29,768
 $65,095
 $43,116
 $45,344
Less:            
Gain (loss) on sales of investment securities, net (1) 2,343
 1,059
 615
 3,152
 (7,656) 2,343
Unrealized (losses) gains on assets and liabilities measured at fair value, net (1) (1) 8
 47
(Loss) on extinguishment of debt (1) 
 
 (81)
Fair value gain (loss) adjustments on assets measured at fair value, net (1) 5,119
 (3,611) (1)
Total operating non-interest income 43,002
 41,848
 29,187
 56,824
 54,383
 43,002
Plus: net interest income 784,664
 657,213
 492,576
 1,040,412
 915,879
 784,664
Net operating revenue $827,666
 $699,061
 $521,763
 $1,097,236
 $970,262
 $827,666
            
Total non-interest expense $360,941
 $330,949
 $260,606
 $482,781
 $425,667
 $360,941
Less:            
Net (gain) loss on sales / valuations of repossessed and other assets (1) (80) (125) (2,070)
Acquisition / restructure expense (1) 
 12,412
 8,836
Contribution to charitable foundation (2) 
 7,645
 
401(k) plan change and other miscellaneous items (2) 
 1,218
 
Net loss (gain) on sales / valuations of repossessed and other assets (1) 3,818
 9
 (80)
Total operating non-interest expense $361,021
 $318,662
 $253,840
 $478,963
 $416,795
 $361,021
            
Operating pre-provision net revenue (2) $466,645
 $380,399
 $267,923
 $618,273
 $553,467
 $466,645
Plus:            
Non-operating revenue adjustments 2,342
 1,067
 581
Revenue adjustments 8,271
 (11,267) 2,342
Less:            
Provision for credit losses 17,250
 8,000
 3,200
 18,500
 23,000
 17,250
Non-operating expense adjustments (80) 12,287
 6,766
Expense adjustments 3,818
 8,872
 (80)
Income before provision for income taxes 451,817
 361,179
 258,538
 604,226
 510,328
 451,817
Income tax expense 126,325
 101,381
 64,294
 105,055
 74,540
 126,325
Net income $325,492
 $259,798
 $194,244
 $499,171
 $435,788
 $325,492
(1)The operating PPNR non-GAAP performance metric is adjusted to exclude the effects of this non-operational item.
(2)    There were no adjustments made for non-recurring items during the years ended December 31, 2017, 2016, and 2015.

(2)The operating PPNR non-GAAP performance metric is adjusted to exclude the effects of these non-recurring items. See "Note 19. Related Party Transactions" for further information regarding the charitable contribution.

Tangible Common Equity
The following table presents financial measures related to tangible common equity. Tangible common equity represents total stockholders' equity, less identifiable intangible assets and goodwill. Management believes that tangible common equity financial measures are useful in evaluating the Company's capital strength, financial condition, and ability to manage potential losses. In addition, management believes that these measures improve comparability to other institutions that have not engaged in acquisitions that resulted in recorded goodwill and other intangible assets.
December 31,December 31
2017 20162019 2018
(dollars and shares in thousands)(dollars and shares in thousands)
Total stockholders' equity$2,229,698
 $1,891,529
$3,016,748
 $2,613,734
Less: goodwill and intangible assets300,748
 302,894
297,608
 299,155
Total tangible stockholders' equity1,928,950
 1,588,635
2,719,140
 2,314,579
Plus: deferred tax - attributed to intangible assets2,698
 4,949
1,921
 1,885
Total tangible common equity, net of tax$1,931,648
 $1,593,584
$2,721,061
 $2,316,464
      
Total assets$20,329,085
 $17,200,842
$26,821,948
 $23,109,486
Less: goodwill and intangible assets, net300,748
 302,894
297,608
 299,155
Tangible assets20,028,337
 16,897,948
26,524,340
 22,810,331
Plus: deferred tax - attributed to intangible assets2,698
 4,949
1,921
 1,885
Total tangible assets, net of tax$20,031,035
 $16,902,897
$26,526,261
 $22,812,216
 ��    
Tangible equity ratio9.6% 9.4%
Tangible common equity ratio9.6
 9.4
10.3% 10.2%
Common shares outstanding105,487
 105,071
102,524
 104,949
Book value per share$29.42
 $24.90
Tangible book value per share, net of tax$18.31
 $15.17
26.54
 22.07
Operating Efficiency Ratio
The following table shows the components used in the calculation of the operating efficiency ratio, which management uses as a metric for assessing cost efficiency:
Year Ended December 31,Year Ended December 31,
2017 2016 20152019 2018 2017
(dollars in thousands)(dollars in thousands)
Total operating non-interest expense$361,021
 $318,662
 $253,840
$478,963
 $416,795
 $361,021
     
Divided by:          
Total net interest income$784,664
 $657,213
 $492,576
$1,040,412
 $915,879
 $784,664
Plus:          
Tax equivalent interest adjustment41,989
 34,902
 31,883
25,094
 23,809
 41,989
Operating non-interest income43,002
 41,848
 29,187
56,824
 54,383
 43,002
Net operating revenue - TEB$869,655
 $733,963
 $553,646
$1,122,330
 $994,071
 $869,655
     
Operating efficiency ratio - TEB41.5% 43.4% 45.8%42.7% 41.9% 41.5%

Regulatory Capital
The following table presents certain financial measures related to regulatory capital under Basel III, which includes Common Equity Tier 1 and total capital. The FRB and other banking regulators use Common Equity Tier 1 and total capital as a basis for assessing a bank's capital adequacy; therefore, management believes it is useful to assess financial condition and capital adequacy using this same basis. Specifically, the total capital ratio takes into consideration the risk levels of assets and off-balance sheet financial instruments. In addition, management believes that the classified assets to Common Equity Tier 1 plus allowance measure is an important regulatory metric for assessing asset quality.
December 31,December 31,
2017 20162019 2018
(dollars in thousands)(dollars in thousands)
Common Equity Tier 1:      
Common Equity$2,229,698
 $1,891,529
$3,016,748
 $2,613,734
Less:      
Non-qualifying goodwill and intangibles296,421
 294,754
295,607
 296,769
Disallowed deferred tax asset638
 1,400
2,243
 768
AOCI related adjustments(9,496) (13,460)21,379
 (47,055)
Unrealized gain on changes in fair value liabilities7,785
 8,118
3,629
 13,432
Common Equity Tier 1$1,934,350
 $1,600,717
$2,693,890
 $2,349,820
Divided by: Risk-weighted assets$18,569,608
 $15,980,092
$25,390,142
 $21,983,976
Common Equity Tier 1 ratio10.4% 10.0%10.6% 10.7%
      
Common Equity Tier 1$1,934,350
 $1,600,717
$2,693,890
 $2,349,820
Plus:      
Trust preferred securities81,500
 81,500
81,500
 81,500
Less:      
Disallowed deferred tax asset159
 934

 
Unrealized gain on changes in fair value liabilities1,947
 5,412

 
Tier 1 capital$2,013,744
 $1,675,871
$2,775,390
 $2,431,320
Divided by: Tangible average assets$19,624,517
 $16,868,674
$26,110,275
 $22,204,799
Tier 1 leverage ratio10.3% 9.9%10.6% 10.9%
      
Total Capital:      
Tier 1 capital$2,013,744
 $1,675,871
$2,775,390
 $2,431,320
Plus:      
Subordinated debt301,020
 299,927
305,732
 305,131
Qualifying allowance for credit losses140,050
 124,704
167,797
 152,717
Other6,174
 6,978
8,955
 8,188
Less: Tier 2 qualifying capital deductions
 

 
Tier 2 capital$447,244
 $431,609
$482,484
 $466,036
      
Total capital$2,460,988
 $2,107,480
$3,257,874
 $2,897,356
      
Total capital ratio13.3% 13.2%12.8% 13.2%
      
Classified assets to Tier 1 capital plus allowance for credit losses:      
Classified assets$222,004
 $211,782
$171,246
 $242,101
Divided by:      
Tier 1 capital2,013,744
 1,675,871
2,775,390
 2,431,320
Plus: Allowance for credit losses140,050
 124,704
167,797
 152,717
Total Tier 1 capital plus allowance for credit losses$2,153,794
 $1,800,575
$2,943,187
 $2,584,037
      
Classified assets to Tier 1 capital plus allowance10.3% 11.8%5.8% 9.4%

Net Interest Margin
The net interest margin is reported on a TEB. A tax equivalent adjustment is added to reflect interest earned on certain securities and loans that are exempt from federal and state income tax. The following tables set forth the average balances, interest income, interest expense, and average yield (on a fully TEB) for the periods indicated:
 Year Ended December 31, Year Ended December 31,
 2017 2016 2019 2018
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
 (dollars in thousands) (dollars in thousands)
Interest earning assets                        
Loans:                        
Commercial and industrial $6,188,473
 $311,375
 5.52% $5,426,053
 $252,209
 5.14% $8,200,542
 $461,918
 5.78% $7,039,090
 $387,422
 5.68%
Commercial real estate 5,663,411
 318,399
 5.62
 5,228,944
 286,149
 5.47
CRE - non-owner occupied 4,629,580
 270,353
 5.85
 3,952,702
 234,753
 5.95
CRE - owner occupied 2,284,746
 120,607
 5.38
 2,263,112
 118,351
 5.34
Construction and land development 1,603,328
 99,427
 6.20
 1,307,895
 83,206
 6.36
 2,176,595
 155,459
 7.16
 1,975,587
 137,227
 6.96
Residential real estate 339,285
 16,066
 4.74
 289,181
 13,374
 4.62
 1,663,544
 80,669
 4.85
 616,159
 29,681
 4.82
Consumer 46,033
 2,243
 4.87
 35,821
 1,658
 4.63
 64,291
 3,712
 5.77
 54,078
 3,143
 5.81
Loans held for sale 5,556
 352
 6.34
 
 
 
Total loans (1), (2), (3) 13,840,530
 747,510
 5.62
 12,287,894
 636,596
 5.40
 19,024,854
 1,093,070
 5.83
 15,900,728
 910,577
 5.82
Securities:                        
Securities - taxable 2,579,585
 64,043
 2.48
 1,789,806
 39,772
 2.22
 2,904,567
 79,124
 2.72
 2,803,350
 78,630
 2.80
Securities - tax-exempt 670,321
 24,596
 5.45
 507,103
 18,768
 5.34
 1,008,655
 36,765
 4.57
 879,888
 33,042
 4.69
Total securities (1) 3,249,906
 88,639
 3.10
 2,296,909
 58,540
 2.91
 3,913,222
 115,889
 3.20
 3,683,238
 111,672
 3.26
Other 680,503
 9,364
 1.38
 532,561
 5,370
 1.01
 648,436
 16,086
 2.48
 480,579
 11,234
 2.34
Total interest earning assets 17,770,939
 845,513
 4.99
 15,117,364
 700,506
 4.86
 23,586,512
 1,225,045
 5.30
 20,064,545
 1,033,483
 5.27
Non-interest earning assets                        
Cash and due from banks 137,537
     141,789
     214,470
     145,246
    
Allowance for credit losses (131,954)     (122,048)     (159,907)     (146,288)    
Bank owned life insurance 166,054
     163,596
     171,960
     168,685
    
Other assets 926,977
     833,562
     1,101,088
     1,014,127
    
Total assets $18,869,553
     $16,134,263
     $24,914,123
     $21,246,315
    
Interest-bearing liabilities                        
Interest-bearing deposits:                        
Interest-bearing transaction accounts $1,467,231
 $3,974
 0.27% $1,217,344
 $2,231
 0.18% $2,545,806
 $20,988
 0.82% $1,891,160
 $11,584
 0.61%
Savings and money market accounts 6,208,057
 26,086
 0.42
 5,827,549
 19,368
 0.33
 8,125,832
 95,533
 1.18
 6,501,241
 54,962
 0.85
Time certificates of deposit 1,560,896
 11,905
 0.76
 1,615,502
 8,123
 0.50
Certificates of deposit 2,117,177
 41,884
 1.98
 1,748,675
 23,918
 1.37
Total interest-bearing deposits 9,236,184
 41,965
 0.45
 8,660,395
 29,722
 0.34
 12,788,815
 158,405
 1.24
 10,141,076
 90,464
 0.89
Short-term borrowings 63,623
 611
 0.96
 80,727
 573
 0.71
 134,622
 2,838
 2.11
 260,662
 4,853
 1.86
Qualifying debt 371,311
 18,273
 4.92
 290,779
 12,998
 4.47
 379,675
 23,390
 6.16
 362,410
 22,287
 6.15
Total interest-bearing liabilities 9,671,118
 60,849
 0.63
 9,031,901
 43,293
 0.48
 13,303,112
 184,633
 1.39
 10,764,148
 117,604
 1.09
Interest cost of funding earning assets     0.78%     0.59%
Non-interest-bearing liabilities                        
Non-interest-bearing demand deposits 6,788,783
     5,062,319
     8,246,232
     7,712,791
    
Other liabilities 330,365
     269,129
     519,400
     357,667
    
Stockholders’ equity 2,079,287
     1,770,914
     2,845,379
     2,411,709
    
Total liabilities and stockholders' equity $18,869,553
     $16,134,263
     $24,914,123
     $21,246,315
    
Net interest income and margin (4)   $784,664
 4.65%   $657,213
 4.58%   $1,040,412
 4.52%   $915,879
 4.68%
(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $42.0$25.1 million and $34.9$23.8 million for 20172019 and 2016,2018, respectively.
(2)Included in the yield computation are net loan fees of $37.0$56.2 million and accretion on acquired loans of $28.2$12.7 million for 2017,2019, compared to $28.5$44.8 million and $29.2$18.6 million for 2016,2018, respectively.
(3)Includes non-accrual loans.
(4)Net interest margin is computed by dividing net interest income by total average earning assets.


  Year Ended December 31,
  2016 2015
  Average
Balance
 Interest Average
Yield / Cost
 Average
Balance
 Interest Average
Yield / Cost
  (dollars in thousands)
Interest earning assets            
Loans:            
Commercial and industrial $5,426,053
 $252,209
 5.14% $4,255,046
 $186,148
 4.97%
Commercial real estate 5,228,944
 286,149
 5.47
 4,123,848
 217,841
 5.28
Construction and land development 1,307,895
 83,206
 6.36
 961,910
 55,909
 5.81
Residential real estate 289,181
 13,374
 4.62
 306,948
 15,077
 4.91
Consumer 35,821
 1,658
 4.63
 26,482
 1,442
 5.45
Total loans (1), (2), (3) 12,287,894
 636,596
 5.40
 9,674,234
 476,417
 5.18
Securities:            
Securities - taxable 1,789,806
 39,772
 2.22
 1,268,755
 28,525
 2.25
Securities - tax-exempt 507,103
 18,768
 5.34
 407,012
 15,032
 5.41
Total securities (1) 2,296,909
 58,540
 2.91
 1,675,767
 43,557
 3.02
Other 532,561
 5,370
 1.01
 271,976
 5,170
 1.90
Total interest earning assets 15,117,364
 700,506
 4.86
 11,621,977
 525,144
 4.79
Non-interest earning assets            
Cash and due from banks 141,789
     137,923
    
Allowance for credit losses (122,048)     (115,033)    
Bank owned life insurance 163,596
     152,288
    
Other assets 833,562
     623,648
    
Total assets $16,134,263
     $12,420,803
    
Interest-bearing liabilities            
Interest-bearing deposits:            
Interest-bearing transaction accounts $1,217,344
 $2,231
 0.18% $983,889
 $1,736
 0.18%
Savings and money market accounts 5,827,549
 19,368
 0.33
 4,470,189
 12,544
 0.28
Time certificates of deposit 1,615,502
 8,123
 0.50
 1,808,120
 7,515
 0.42
Total interest-bearing deposits 8,660,395
 29,722
 0.34
 7,262,198
 21,795
 0.30
Short-term borrowings 80,727
 573
 0.71
 185,173
 4,965
 2.68
Long-term debt 
 
 
 76,655
 801
 1.04
Qualifying debt 290,779
 12,998
 4.47
 120,191
 5,007
 4.17
Total interest-bearing liabilities 9,031,901
 43,293
 0.48
 7,644,217
 32,568
 0.43
Non-interest-bearing liabilities            
Non-interest-bearing demand deposits 5,062,319
     3,273,138
    
Other liabilities 269,129
     179,496
    
Stockholders’ equity 1,770,914
     1,323,952
    
Total liabilities and stockholders' equity $16,134,263
     $12,420,803
    
Net interest income and margin (4)   $657,213
 4.58%   $492,576
 4.51%
(1)Yields on loans and securities have been adjusted to a TEB. The taxable-equivalent adjustment was $34.9 million and $31.9 million for 2016 and 2015, respectively.
(2)Included in the yield computation are net loan fees of $28.5 million and accretion on acquired loans of $29.2 million for 2016, compared to $16.9 million and $17.1 million for 2015, respectively.
(3)Includes non-accrual loans.
(4)Net interest margin is computed by dividing net interest income by total average earning assets.

 Year Ended December 31, Year Ended December 31, Year Ended December 31,
 2017 versus 2016 2016 versus 2015 2019 versus 2018
 Increase (Decrease) Due to Changes in (1) Increase (Decrease) Due to Changes in (1) Increase (Decrease) Due to Changes in (1)
 Volume Rate Total Volume Rate Total Volume Rate Total
 (in thousands) (in thousands)
Interest income:                  
Loans:                  
Commercial and industrial $38,362
 $20,804
 $59,166
 $54,430
 $11,631
 $66,061
 $65,422
 $9,074
 $74,496
Commercial real estate 24,426
 7,824
 32,250
 60,475
 7,833
 68,308
CRE - non-owner occupied 39,528
 (3,928) 35,600
CRE - owner occupied 1,142
 1,114
 2,256
Construction and land development 18,320
 (2,099) 16,221
 22,011
 5,286
 27,297
 14,357
 3,875
 18,232
Residential real estate 2,373
 319
 2,692
 (822) (881) (1,703) 50,790
 198
 50,988
Consumer 498
 87
 585
 432
 (216) 216
 590
 (21) 569
Loans held for sale 352
 
 352
Total loans 83,979
 26,935
 110,914
 136,526
 23,653
 160,179
 172,181
 10,312
 182,493
Securities:                  
Securities - taxable 19,608
 4,663
 24,271
 11,579
 (332) 11,247
 2,757
 (2,263) 494
Securities - tax-exempt 5,989
 (161) 5,828
 3,704
 32
 3,736
 4,693
 (970) 3,723
Total securities 25,597
 4,502
 30,099
 15,283
 (300) 14,983
 7,450
 (3,233) 4,217
Other 2,036
 1,958
 3,994
 2,628
 (2,428) 200
 4,164
 688
 4,852
Total interest income 111,612
 33,395
 145,007
 154,437
 20,925
 175,362
 183,795
 7,767
 191,562
                  
Interest expense:                  
Interest bearing transaction accounts $677
 $1,066
 $1,743
 $428
 $67
 $495
Interest-bearing transaction accounts $5,397
 $4,007
 $9,404
Savings and money market 1,600
 5,118
 6,718
 4,511
 2,313
 6,824
 19,100
 21,471
 40,571
Time certificates of deposit (416) 4,198
 3,782
 (969) 1,577
 608
 7,290
 10,676
 17,966
Short-term borrowings (165) 203
 38
 (741) (3,651) (4,392) (2,657) 642
 (2,015)
Long-term debt 
 
 
 
 (801) (801)
Qualifying debt 3,963
 1,312
 5,275
 7,625
 366
 7,991
 1,064
 39
 1,103
Total interest expense 5,659
 11,897
 17,556
 10,854
 (129) 10,725
 30,194
 36,835
 67,029
                  
Net increase $105,953
 $21,498
 $127,451
 $143,583
 $21,054
 $164,637
 $153,601
 $(29,068) $124,533
(1)Changes due to both volume and rate have been allocated to volume changes.
Comparison of interest income, interest expense and net interest margin
The Company's primary source of revenue is interest income. For the year ended December 31, 2017,2019, interest income was $845.5 million,$1.2 billion, an increase of 20.7%$191.6 million, or 18.5%, compared to $700.5 million$1.0 billion for the year ended December 31, 2016.2018. This increase was primarily the result of a $1.55$3.1 billion increase in the average loan balance which, together with the effect of the rising rate environment and inclusion of a full year of HFF results,that drove a $110.9$182.5 million increase in loan interest income for the year ended December 31, 2017.2019. Interest income from investment securities increased by $30.1$4.2 million for the comparable period primarily due to an increase in the average investment balance of $953.0$230.0 million, partially offset by a decrease in interest rates from December 31, 2016 as well as2018. Other interest income increased $4.9 million from the comparable period due primarily to an increase in interest rates.interest-bearing cash account balances. Average yield on interest earning assets increased to 4.99%5.30% for the year ended December 31, 2017,2019, compared to 4.86% for the same period5.27% in 2016,2018, which was primarily the result of increased yields on loans and investment securities resulting from rising interest rates during 2017.the Company's interest-bearing cash accounts.
For the year ended December 31, 2017,2019, interest expense was $60.8$184.6 million, compared to $43.3$117.6 million for the year ended December 31, 2016.2018. Interest expense on deposits increased $12.2$67.9 million for the same period as average interest bearinginterest-bearing deposits increased $575.8 million$2.6 billion, which togetherwas paired with the effect of the rising rate environment, drove an 11 basisa 35-basis point increase in the average cost of interest bearinginterest-bearing deposits. Interest expense on short-term borrowings decreased by $2.0 million as a result of a $126.0 million decrease in average short-term borrowings for the year ended December 31, 2019 compared to the same period in 2018. Interest expense on qualifying debt increased by $5.3$1.1 million as a result of an $80.5 million increasedue to changes in average qualifying debt for the year ended December 31, 2017 compared to the same period in 2016. The increaserelated interest rate swap expense arising from fluctuations in interest expense on qualifying debt is the result of inclusion of a full year of interest expense on the Parent's $175.0 million of subordinated debentures in 2017 results, compared to only six months in 2016.rates.
For the year ended December 31, 2017,2019, net interest income was $784.7 million,$1.0 billion, compared to $657.2$915.9 million for the year ended December 31, 2016.2018. The increase in net interest income reflects a $2.65$3.5 billion increase in average interest earning assets, offset by a $639.2 million increase in average interest-bearing liabilities. The increase in net interest margin of 7 basis points

compared to 2016 is also the result of an increase in average yield on loans and securities due to the rising interest rate environment, partially offset by higher deposit and funding costs.
Interest income for the year ended December 31, 2016 was $700.5 million, an increase of 33.4%, compared to $525.1 million for the year ended December 31, 2015. This increase was primarily the result of a $2.61 billion increase in the average loan balance, which drove a $160.2 million increase in loan interest income for the year ended December 31, 2016. The acquisition of the HFF loan portfolio increased the 2016 average loan balance by $904.8 million. The remaining increase in the average loan balance from the prior year is attributable to organic loan growth and inclusion of a full year of Bridge loans in the average loan balances, compared to only six months in 2015. Interest income from investment securities increased by $15.0 million for the comparable period primarily due to an increase in the average investment balance of $621.1 million from December 31, 2015. Average yield on interest earning assets increased to 4.86% for the year ended December 31, 2016, compared to 4.79% for the same period in 2015, which was primarily the result of increased yields on loans, primarily as a result the HFF portfolio.
Interest expense for the year ended December 31, 2016 was $43.3 million, compared to $32.6 million for the year ended December 31, 2015, an increase of $10.7 million, or 3.4%. Interest expense on deposits increased $7.9 million for the same period as average interest bearing deposits increased $1.40 billion, which is a 4 basis point increase in average cost of interest bearing deposits. Interest expense on short-term and long-term borrowings decreased by $5.2 million as a result of a $181.1 million decrease in average short-term and long-term borrowings for the year ended December 31, 2016, compared to the same period in 2015. The decrease in average short-term borrowings relates primarily to the payoff of the Company's 10% Senior Notes during 2015, as well as a decrease in average FHLB overnight advances. Average long-term borrowings decreased from the prior year as the Company paid off $200.0 million of FHLB advances classified as long-term during 2015.
Net interest income was $657.2 million for the year ended December 31, 2016, compared to $492.6 million for the year ended December 31, 2015, an increase of $164.6 million, or 33.4%. The increase in net interest income reflects a $3.50 billion increase in average interest earning assets, offset by a $1.39$2.5 billion increase in average interest-bearing liabilities. The increasedecrease in net interest margin of 716 basis points compared to 2018 is the result of an increase in the average loan balance and average yield on loans compared to the same period in 2015, slightly offset by higher deposit and funding costs.

Provision for Credit Losses
The provision for credit losses on loans in each period is reflected as a reduction in earnings infor that period. The provision is equal to the amount required to maintain the allowance for credit losses at a level that is adequate to absorb probable credit losses inherent in the loan portfolio. For the year ended December 31, 2017,2019, the provision for credit losses was $17.3$18.5 million, compared to $8.0$23.0 million for the year ended December 31, 2016.2018. The decrease in the provision increase was primarily due to organic growtha reduction in total loans of $1.89 billion and minimal net charge-offs in 2017. For the year ended December 31, 2016, the provision for credit losses was $8.0 million, compared to $3.2 million for the year ended December 31, 2015. The provision increase was primarily due to an increase in total organic loans, as well as increased net charge-offs for 2016, compared to net recoveries for 2015. and loan mix.
The Company may also establish an additional allowance for credit losses foron PCI loans through provision for credit losses when impairment is determined as a result of lower than expected cash flows. As of December 31, 20172019 and 2016,2018, the allowance for credit losses on PCI loans was $1.6$0.1 million. For non-PCI loans, an additional allowance for credit losses is established when the remaining credit marks on these loans are lower than the Company's calculated allowance for similar types of organic loans. As of December 31, 2019 and 2018, the allowance for credit losses on non-PCI loans was $0.9 million and $1.8$3.4 million, respectively.

The Company also records estimated losses on unfunded loan commitments, which are classified as non-interest expense, with corresponding reserves in other liabilities. For the years ended December 31, 2019 and 2018, the Company recorded $0.8 million and $2.0 million, respectively, in non-interest expense for estimated losses on unfunded loan commitments. As of December 31, 2019 and 2018, the loss contingency for unfunded loan commitments and letters of credit was $9.0 millionand $8.2 million as of December 31, 2019 and 2018, respectively.
Non-interest Income
The following table presents a summary of non-interest income for the periods presented: 
 Year Ended December 31, Year Ended December 31,
 2017 2016 Increase (Decrease) 2016 2015 Increase (Decrease) 2019 2018 Increase (Decrease)
 (in thousands) (in thousands)
Service charges and fees $20,346
 $18,824
 $1,522
 $18,824
 $14,782
 $4,042
 $23,353
 $22,295
 $1,058
Income from equity investments 8,290
 8,595
 (305)
Card income 6,313
 5,226
 1,087
 5,226
 4,718
 508
 6,979
 8,009
 (1,030)
Income from equity investments 4,496
 2,664
 1,832
 2,664
 564
 2,100
Foreign currency income 4,987
 4,760
 227
Income from bank owned life insurance 3,861
 3,762
 99
 3,762
 3,899
 (137) 3,901
 3,946
 (45)
Foreign currency income 3,536
 3,419
 117
 3,419
 1,535
 1,884
Lending related income and gains (losses) on sale of loans, net 2,212
 5,295
 (3,083) 5,295
 1,390
 3,905
 3,158
 4,340
 (1,182)
Gain (loss) on sales of investment securities, net 2,343
 1,059
 1,284
 1,059
 615
 444
 3,152
 (7,656) 10,808
(Loss) on extinguishment of debt 
 
 
 
 (81) 81
Fair value gain (loss) adjustments on assets measured at fair value, net 5,119
 (3,611) 8,730
Other income 2,237
 2,666
 (429) 2,666
 2,346
 320
 6,156
 2,438
 3,718
Total non-interest income $45,344
 $42,915
 $2,429
 $42,915
 $29,768
 $13,147
 $65,095
 $43,116
 $21,979
Total non-interest income for the year ended December 31, 20172019 compared to 2016,2018, increased by $2.4$22.0 million, or 5.7%51.0%. The increase is primarily due to sales of investment securities and fair value adjustments. The net gain on sales of investment securities of $3.2 million during the year ended December 31, 2019 was the result of a portfolio re-balancing initiative. The net loss on sales of investment securities of $7.7 million during the year ended December 31, 2018 relates to sales of low yielding investment securities, which were replaced with investment securities with shorter durations and higher yields, as well as losses on sales of equity securities. The net fair value gain on assets measured at fair value was $5.1 million for the year ended December 31, 2019, compared to a net loss of $3.6 million for the year ended December 31, 2018, which resulted from changes in the fair market value of the Company's equity securities. Other increases in non-interest income from equity investments andwere due to increases in service charges and fees. The increase in income from equity investments is attributable to an increase in both warrantfees and SBICother non-interest income. The increase in service charges and fees of $1.1 million is due to continued growth in the Company's deposit base, which increased $2.42$3.6 billion fromduring the year ended December 31, 2016.2019. The increase in other non-interest income of $3.7 million is due primarily to an increase in rental income on equipment leases. These increases were partially offset by a decrease in lending related income and netof $1.2 million due to fewer gains on the sale of loans largely as a result of decreased net gains on sale of loans in 2017.
Total non-interest income for the year ended December 31, 2016 compared to 2015, increased by $13.1 million, or 44.2%. The increase is primarily due to service charges and fees, lending related income and net gains on sale of loans, and income from equity investments. The increasethe same period in service charges and fees is due to the growth of the Company's deposit base, which increased $2.52 billion from December 31, 2015, as well as inclusion of a full year of Bridge's results, compared to only six months of income in 2015. The increase in lending related income and net gains on sale of loans relates to increases in total gains on sale of loans and letters of credit fees. Income from equity investments increased largely as a result of warrant income.2018.

Non-interest Expense
The following table presents a summary of non-interest expense for the periods presented:
Year Ended December 31,Year Ended December 31,
2017 2016 Increase (Decrease) 2016 2015 Increase (Decrease)2019 2018 Increase (Decrease)
(in thousands)(in thousands)
Salaries and employee benefits$214,344
 $188,810
 $25,534
 $188,810
 $149,828
 $38,982
$279,274
 $253,238
 $26,036
Legal, professional, and directors' fees29,814
 24,610
 5,204
 24,610
 18,548
 6,062
37,009
 28,722
 8,287
Occupancy27,860
 27,303
 557
 27,303
 22,180
 5,123
32,507
 29,404
 3,103
Deposit costs31,719
 18,900
 12,819
Data processing19,225
 19,657
 (432) 19,657
 15,830
 3,827
30,577
 22,716
 7,861
Insurance14,042
 12,898
 1,144
 12,898
 11,003
 1,895
11,924
 14,005
 (2,081)
Deposit costs9,731
 4,983
 4,748
 4,983
 907
 4,076
Loan and repossessed asset expenses4,617
 2,999
 1,618
 2,999
 4,377
 (1,378)7,571
 4,578
 2,993
Business development7,043
 5,960
 1,083
Marketing3,804
 3,596
 208
 3,596
 2,885
 711
4,199
 3,770
 429
Card expense3,413
 1,939
 1,474
 1,939
 1,710
 229
2,346
 4,301
 (1,955)
Intangible amortization2,074
 2,788
 (714) 2,788
 1,970
 818
1,547
 1,594
 (47)
Net (gain) loss on sales / valuations of repossessed and other assets(80) (125) 45
 (125) (2,070) 1,945
Acquisition / restructure expense
 12,412
 (12,412) 12,412
 8,836
 3,576
Net loss (gain) on sales / valuations of repossessed and other assets3,818
 9
 3,809
Other expense32,097
 29,079
 3,018
 29,079
 24,602
 4,477
33,247
 38,470
 (5,223)
Total non-interest expense$360,941
 $330,949
 $29,992
 $330,949
 $260,606
 $70,343
$482,781
 $425,667
 $57,114
Total non-interest expense for the year ended December 31, 2017,2019 compared to 2016,2018, increased $30.0$57.1 million, or 9.1%13.4%. This increase primarily relates to salaries and employee benefits, deposit costs, legal, professional, and directors' fees, data processing, net loss on sales/valuations of repossessed and deposit costs.other assets, and occupancy expenses. Salaries and employee benefits and legal, professional, and directors' fees have increased as the Company continues to build out its infrastructure to supportsupports its continued growth.growth through hiring and incentives. Full-time equivalent employees increased 13.9% from 1,514 at2.7% to 1,835 during the year ended December 31, 2016, compared to 1,725 at December 31, 2017.2019. Deposit costs consist of fees to the Promontory Interfinancial Network and others for reciprocal deposits as well as earnings creditcredits on select non-interest bearing deposits. The increase in deposit costs of $12.8 million for 20172019 compared to 20162018 relates primarily relates to an increase in deposit earnings credits paid to account holders. Theseholders due to a higher amount of deposits eligible for these credits. The increase to legal, professional, and directors' fees of $8.3 million largely relates to consulting projects aimed at the implementation of CECL and other technology initiatives that will help position the Company for continued growth. The net loss on sales/valuations of repossessed and other assets of $3.8 million primarily relates to valuation adjustments on OREO properties. The other significant increases to non-interest expense consist of increases in data processing and occupancy of $7.9 million and $3.1 million, respectively, which relate to the Company's support of its continued growth. These increases were partially offset by a decrease in other non-interest expense of $12.4$5.2 million, which primarily relates to a non-recurring charitable donation of $7.6 million made in acquisition / restructure expense relate2018 as well as a decrease in FDIC insurance costs of $2.4 million due to the HFF acquisition and restructure costs forelimination of the system conversion that occurredFDIC assessment surcharge in the fourth quarter of 2016.
Total non-interest expense for the year ended December 31, 2016, compared to 2015, increased $70.3 million, or 27.0%. This increase primarily relates to salaries and employee benefits, legal, professional, and directors' fees, data processing, occupancy, acquisition / restructure expense, and other non-interest expense.2018. The risedecrease in salaries and employee benefits, legal, professional, and directors' fees, data processing, occupancy, and other non-interest expense is primarily attributable to the addition of Bridge as 2016 includeswas offset in part by a full year of Bridge's expenses, compared to only six months of expenses in 2015. These expenses also increased as a result of the acquisition of the HFF loan portfolio in April 2016. The$3.2 million increase in acquisition / restructuredepreciation expense in 2016 was driven by the core system conversion that occurred in the last quarter of 2016, as well as costs associated with the acquisition of the HFF loan portfolio.on leased equipment.
Income Taxes
TheFor the years ended December 31, 2019, 2018, and 2017 the Company's effective tax rate for the year ended December 31, 2017 was 17.39%, 14.61%, and 27.96%, compared to 28.07% for the year ended December 31, 2016, and 24.87% for the year ended December 31, 2015. There was not a significant change in the effective tax rate from 2017 compared to 2016.respectively. The increase in the effective tax rate from 2015 compared2018 to 20162019 is due primarily to management's decision during the third quarter of 2018 to carryback its 2017 federal NOLs. The decrease in the effective tax rate from 2017 to 2018 is due primarily to the increasedecrease in pre-taxthe federal statutory rate effective in 2018, a reduction in excise taxes, and management's decision during the third quarter 2018 to carryback its 2017 federal NOLs. The reduction in excise taxes from 2017 to 2018 resulted from not deferring WAB's 2018 dividend from BW Real Estate as was the case in 2017. The Company's 2017 federal NOLs resulted from the acceleration of deductions into and deferral of revenue from 2017. As the federal income without proportional increases to favorable tax rate items forwas higher in the year ended December 31, 2016 comparedyears to 2015.which the carryback is applicable, a larger tax benefit results from the decision to carryback the 2017 federal NOLs, rather than carryforward these losses to future taxable years.

Business Segment Results
The Company's reportable segments are aggregateddefined primarily based on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The Company's NBL segments, which include HOA services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs, provide specialized banking services to niche markets. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas. The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.
The following tables present selected operating segment information for the periods presented:
   Regional Segments   Regional Segments
 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
December 31, 2017 (in millions)
December 31, 2019 (in millions)
Loans, net of deferred loan fees and costs $15,093.9
 $3,323.7
 $1,844.8
 $1,934.7
 $1,275.5
 $21,123.3
 $3,847.9
 $2,252.5
 $2,253.9
 $1,311.2
Deposits 16,972.5
 4,841.3
 3,951.4
 2,461.1
 1,681.7
 22,796.5
 5,384.7
 4,350.1
 2,585.3
 2,373.6
                    
December 31, 2016          
December 31, 2018          
Loans, net of deferred loan fees and costs $13,208.5
 $2,955.9
 $1,725.5
 $1,766.8
 $1,095.4
 $17,710.6
 $3,647.9
 $2,003.5
 $2,161.1
 $1,300.2
Deposits 14,549.8
 3,843.4
 3,731.5
 2,382.6
 1,543.6
 19,177.4
 5,090.2
 3,996.4
 2,347.5
 1,839.1
Year Ended December 31, 2017 (in thousands)
Year Ended December 31, 2019 (in thousands)
Income (loss) before income taxes $451,817
 $126,108
 $97,794
 $60,665
 $42,398
 $604,226
 $156,493
 $111,001
 $73,649
 $53,079
                    
Year Ended December 31, 2016          
Year Ended December 31, 2018          
Income (loss) before income taxes $361,179
 $104,082
 $88,896
 $61,029
 $42,924
 $510,328
 $139,047
 $99,322
 $59,334
 $48,132
 National Business Lines   National Business Lines  
 HOA Services Public & Nonprofit Finance Technology & Innovation HFF  Other NBL Corporate & Other 
HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance  Other NBL Corporate & Other
December 31, 2017 (in millions)
December 31, 2019 (in millions)
Loans, net of deferred loan fees and costs $162.1
 $1,580.4
 $1,097.9
 $1,327.7
 $2,543.0
 $4.1
 $237.2
 $1,635.6
 $1,552.0
 $1,930.8
 $6,098.7
 $3.5
Deposits 2,230.4
 
 1,737.6
 
 
 69.0
 3,210.1
 0.1
 3,771.5
 
 36.9
 1,084.2
                        
December 31, 2016            
December 31, 2018            
Loans, net of deferred loan fees and costs $116.8
 $1,454.3
 $1,011.4
 $1,292.1
 $1,776.9
 $13.4
 $210.0
 $1,547.5
 $1,200.9
 $1,479.9
 $4,154.9
 $4.7
Deposits 1,890.3
 
 1,038.2
 
 
 120.2
 2,607.2
 
 2,559.0
 
 
 738.0
Year Ended December 31, 2017 (in thousands)
Year Ended December 31, 2019 (in thousands)
Income (loss) before income taxes $26,030
 $19,370
 $51,348
 42,354
 $37,401
 $(51,651) $49,823
 $5,668
 $93,748
 39,935
 $78,895

$(58,065)
                        
Year Ended December 31, 2016            
Year Ended December 31, 2018            
Income (loss) before income taxes $17,724
 $13,206
 $46,226
 30,039
 $32,804
 $(75,751) $35,097
 $8,288
 $72,334
 42,467
 $44,281
 $(37,974)

BALANCE SHEET ANALYSIS
Total assets increased $3.13$3.7 billion, or 18.2%16.1%, to $20.33$26.8 billion at December 31, 2017,2019 compared to $17.20$23.1 billion at December 31, 2016.2018. The increase in total assets relates primarily to organic loan growth and an increase in cash and cash equivalents and investment securities resulting from increased deposits.growth. Loans increased $1.89$3.4 billion, or 14.3%19.3%, to $15.09$21.1 billion at December 31, 2017,2019, compared to $13.21$17.7 billion at December 31, 2016.2018. The increase in loans from December 31, 2018 was driven by commercial and industrial loans of $1.6 billion, CRE, non-owner occupied loans of $1.0 billion, and residential real estate loans of $943.3 million.
Total liabilities increased $2.79$3.3 billion, or 18.2%16.1%, to $18.10$23.8 billion at December 31, 2017,2019, compared to $15.31$20.5 billion at December 31, 2016.2018. The increase in liabilities is due primarily to an increase in total deposits and FHLB advances.deposits. Total deposits increased $2.42$3.6 billion, or 16.7%18.9%, to $16.97$22.8 billion at December 31, 2017, all2019. The increase in deposits from December 31, 2018 was driven by an increase in savings and money market deposits of which is attributable to organic$1.8 billion, non-interest-bearing demand deposit growth. FHLB advances increased $310.0of $1.1 billion, and certificates of deposits of $542.0 million from December 31, 2016.2018.
Total stockholders’ equity increased by $338.2$403.0 million, or 17.9%15.4%, to $2.23$3.0 billion at December 31, 2017,2019 compared to $1.89$2.6 billion at December 31, 2016.2018. The increase in stockholders' equity relates primarily to net income for the year ended December 31, 2017.2019 and an increase in the fair value of the Company's AFS portfolio, which is recognized as part of AOCI, partially offset by share repurchases under its common stock repurchase plan and dividends paid to shareholders.
Investment securities
InvestmentDebt securities are classified at the time of acquisition as either HTM, AFS, or measured at fair valuetrading based upon various factors, including asset/liability management strategies, liquidity and profitability objectives, and regulatory requirements. HTM securities are carried at amortized cost, adjusted for amortization of premiums or accretion of discounts. AFS securities are securities that may be sold prior to maturity based upon asset/liability management decisions. Investment securities classified as AFS are carried at fair value. Unrealized gains or losses on AFS securities are recorded as part of AOCI in stockholders’ equity. However, effective January 1, 2018, the amendments within ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, require that equity investments be measured at fair value with changes in fair value recognized in net income. As of December 31, 2017, the Company's equity securities consist of $53.2 million in preferred stock. Amortization of premiums or accretion of discounts on MBS is periodically adjusted for estimated prepayments. InvestmentTrading securities measured at fair value are reported at fair value, with unrealized gains and losses included in current period earnings.

The Company's investment securities portfolio is utilized as collateral for borrowings, required collateral for public deposits and customer repurchase agreements, and to manage liquidity, capital, and interest rate risk.
The following table summarizes the carrying value of the investment securities portfolio for each of the periods below: 
 At December 31, At December 31,
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (in thousands) (in thousands)
Debt securities          
CDO $21,857
 $13,490
 $10,060
 $11,445
 $50
 $10,142
 $15,327
 $21,857
 $13,490
 $10,060
Commercial MBS issued by GSEs 109,077
 117,792
 19,114
 2,147
 
 94,253
 100,106
 109,077
 117,792
 19,114
Corporate debt securities 103,483
 64,144
 13,251
 52,489
 97,777
 99,961
 99,380
 103,483
 64,144
 13,251
CRA investments 50,616
 37,113
 34,685
 24,332
 24,882
Mutual funds 
 
 
 37,702
 36,532
Preferred stock 53,196
 94,662
 111,236
 82,612
 61,484
Municipal securities 7,773
 
 
 
 
Private label commercial MBS 
 
 4,691
 5,149
 5,433
 
 
 
 
 4,691
Private label residential MBS 868,524
 433,685
 257,128
 70,243
 36,099
 1,129,227
 924,594
 868,524
 433,685
 257,128
Residential MBS issued by GSEs 1,689,295
 1,356,258
 1,171,702
 893,047
 1,024,457
 1,412,060
 1,530,124
 1,689,295
 1,356,258
 1,171,702
Tax-exempt 765,960
 500,312
 334,830
 299,037
 299,244
 1,039,962
 841,573
 765,960
 500,312
 334,830
Trust preferred securities 28,617
 26,532
 24,314
 25,546
 23,805
 27,040
 28,617
 28,617
 26,532
 24,314
U.S. government sponsored agency securities 61,462
 56,022
 
 18,346
 46,975
 10,000
 38,188
 61,462
 56,022
 
U.S. treasury securities 2,482
 2,502
 2,993
 
 
 999
 1,984
 2,482
 2,502
 2,993
Total investment securities $3,754,569
 $2,702,512
 $1,984,004
 $1,522,095
 $1,656,738
Total debt securities $3,831,417
 $3,579,893
 $3,650,757
 $2,570,737
 $1,838,083
          
          
Equity securities          
CRA investments $52,504
 $51,142
 $50,616
 $37,113
 $34,685
Preferred stock 86,197
 63,919
 53,196
 94,662
 111,236
Total equity securities $138,701
 $115,061
 $103,812
 $131,775
 $145,921

Weighted average yield on investment securities is calculated by dividing income within each maturity range by the outstanding amount of the related investment and has not been tax-effected on tax-exempt obligations. For purposes of calculating the weighted average yield, AFS and securities measured at fair value are carried at amortized cost in the table below. The maturity distribution and weighted average yield of the Company's investment security portfolios at December 31, 20172019 are summarized in the table below: 
 December 31, 2017 December 31, 2019
 Due Under 1 Year Due 1-5 Years Due 5-10 Years Due Over 10 Years Total Due Under 1 Year Due 1-5 Years Due 5-10 Years Due Over 10 Years Total
 Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield Amount Yield
 (dollars in thousands) (dollars in thousands)
Held-to-maturity                                        
Tax-exempt $
 % $11,300
 4.48% $14,979
 2.97% $228,771
 4.67% $255,050
 4.56% $7,330
 5.27% $17,414
 4.30% $
 % $460,363
 4.57% $485,107
 4.57%
                    
Available-for-sale                                        
CDO $
 % $
 % $
 % $50
 % $50
 % $
 % $
 % $
 % $50
 % $50
 %
Commercial MBS issued by GSEs (1) 
 
 
 
 23,608
 1.81
 89,461
 2.25
 113,069
 2.16
 
 
 18,445
 2.26
 1,680
 4.28
 74,937
 2.28
 95,062
 2.31
Corporate debt securities 
 
 5,044
 4.30
 100,000
 3.90
 
 
 105,044
 3.92
 
 
 5,015
 4.32
 100,000
 2.35
 
 
 105,015
 2.45
CRA investments 31,366
 2.01
 15,762
 4.20
 4,005
 2.75
 
 
 51,133
 2.75
Preferred stock 
 
 
 
 
 
 52,172
 6.52
 52,172
 6.52
Municipal securities 
 
 
 
 
 
 7,494
 5.57
 7,494
 5.57
Private label residential MBS (1) 289
 4.65
 558
 4.88
 
 
 873,414
 3.10
 874,261
 3.10
 99
 5.39
 
 
 
 
 1,129,886
 3.24
 1,129,985
 3.24
Residential MBS issued by GSEs (1) 1
 4.89
 2,505
 2.45
 15,966
 2.49
 1,700,716
 2.54
 1,719,188
 2.53
 3
 5.26
 1,423
 2.74
 8,429
 2.53
 1,396,739
 2.66
 1,406,594
 2.66
Tax-exempt 2,541
 2.78
 9,954
 3.27
 93,495
 3.53
 395,998
 2.85
 501,988
 2.99
 
 
 9,751
 3.58
 39,236
 3.43
 481,742
 3.01
 530,729
 3.05
Trust preferred securities 
 
 
 
 
 
 32,000
 2.39
 32,000
 2.39
 
 
 
 
 
 
 32,000
 2.45
 32,000
 2.45
U.S. government sponsored agency securities 
 
 
 
 64,000
 2.44
 
 
 64,000
 2.44
 
 
 
 
 10,000
 2.40
 
 
 10,000
 2.40
U.S. treasury securities 501
 1.28
 1,995
 1.50
 
 
 
 
 2,496
 1.45
 999
 1.68
 
 
 
 
 
 
 999
 1.68
Total AFS securities $34,698
 2.08% $35,818
 3.69% $301,074
 3.22% $3,143,811
 2.79% $3,515,401
 2.83% $1,101
 2.02% $34,634
 2.95% $159,345
 2.65% $3,122,848
 2.92% $3,317,928
 2.91%
                    
                    
Equity                    
CRA investments $44,555
 2.89% $5,250
 2.51% $3,000
 3.00% $
 % $52,805
 2.86%
Preferred stock 
 
 
 
 
 
 82,514
 5.81
 82,514
 5.81
Total equity securities $44,555
 2.89% $5,250
 2.51% $3,000
 3.00% $82,514
 5.81% $135,319
 4.66%
(1)MBS are comprised of pools of loans with varying maturities, the majority of which are due after 10 years.
The Company does not own any subprime MBS in its investment portfolio. The majority of its MBS are GSE issued. The remaining MBS that are not GSE issued consist of $809.2 million$1.1 billion rated AAA, $55.2$30.7 million rated AA, $1.4$0.2 million rated A, $0.9$0.3 million rated BBB, and $1.8$1.2 million are non-investment grade.

Gross unrealized losses at December 31, 2017 are2019 relate primarily caused byto market interest rate fluctuations and credit spread widening in applicable markets.increases since the securities' original purchase date. The Company has reviewed securities on which there is an unrealized loss in accordance with its accounting policy for OTTI securities described in "Note 2. Investment Securities" to the Consolidated Financial Statements contained herein. There were no impairment charges recorded during the years ended December 31, 2017, 2016,2019, 2018, and 2015.2017.
The Company does not consider any securities to be other-than-temporarily impaired as of December 31, 2017, 2016,2019, 2018, and 2015.2017. However, the Company cannot guarantee that OTTI will not occur in future periods. At December 31, 2017,2019, the Company hadhas the intent and ability to retain its investments for a period of time sufficient to allow for any anticipated recovery in fair value.

Loans
The table below summarizes the distribution of the Company’s held for investment loan portfolio at the end of each of the periods indicated: 
 December 31, December 31,
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (in thousands) (in thousands)
Loans, held for investment                    
Commercial and industrial $6,841,247
 $5,859,446
 $5,264,856
 $3,531,899
 $2,472,708
 $9,391,760
 $7,765,100
 $6,841,247
 $5,859,446
 $5,264,856
Commercial real estate - non-owner occupied 3,911,313
 3,549,876
 2,289,480
 2,058,620
 1,843,415
 5,261,018
 4,223,427
 3,911,313
 3,549,876
 2,289,480
Commercial real estate - owner occupied 2,245,060
 2,015,671
 2,085,738
 1,734,617
 1,561,862
 2,320,237
 2,329,205
 2,245,060
 2,015,671
 2,085,738
Construction and land development 1,647,726
 1,489,488
 1,143,228
 754,154
 537,231
 1,971,633
 2,155,625
 1,647,726
 1,489,488
 1,143,228
Residential real estate 425,291
 258,734
 322,265
 298,872
 350,312
 2,147,652
 1,203,613
 425,291
 258,734
 322,265
Consumer 48,583
 38,572
 26,474
 32,633
 45,153
 56,932
 69,995
 48,583
 38,572
 26,474
Deferred loan fees and costs (25,285) (22,260) (19,187) (12,530) (9,266) (47,739) (36,336) (25,285) (22,260) (19,187)
Loans, net of deferred loan fees and costs 15,093,935
 13,189,527
 11,112,854
 8,398,265
 6,801,415
 21,101,493
 17,710,629
 15,093,935
 13,189,527
 11,112,854
Allowance for credit losses (140,050) (124,704) (119,068) (110,216) (100,050) (167,797) (152,717) (140,050) (124,704) (119,068)
Total loans HFI $14,953,885
 $13,064,823
 $10,993,786
 $8,288,049
 $6,701,365
 $20,933,696
 $17,557,912
 $14,953,885
 $13,064,823
 $10,993,786
Loans that are held for investment are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts, purchase accounting fair value adjustments, and an allowance for credit losses. Net deferred loan fees and costs as of December 31, 20172019 and 20162018 total $25.3$47.7 million and $22.3$36.3 million, respectively, which is a reduction in the carrying value of loans. Net unamortized purchase discountspremiums on secondary market loan purchases total $8.5$29.9 million and $5.2$2.0 million as of December 31, 20172019 and 2016,2018, respectively. Total loans held for investment are also net of interest rate and credit marks on acquired loans, which are a net reduction in the carrying value of loans. Interest rate marks were $14.1$3.8 million and $22.2$7.1 million as of December 31, 20172019 and 2016,2018, respectively. Credit marks were $27.0$6.5 million and $47.3$14.6 million as of December 31, 20172019 and 2016,2018, respectively.
TheAs of December 31, 2019, the Company also had $21.8 million of HFS loans. There were no HFS loans as of December 31, 2017 and $18.9 million of HFS loans as of December 31, 2016.2018.


The following table sets forth the amount of loans, including HFS loans, outstanding by type of loan as of December 31, 20172019 that were contractually due in one year or less, more than one year and less than five years, and more than five years based on remaining scheduled repayments of principal. Lines of credit or other loans having no stated final maturity and no stated schedule of repayments are reported as due in one year or less. The table also presents an analysis of the rate structure for loans within the same maturity time periods. Actual cash flows from these loans may differ materially from contractual maturities due to prepayment, refinancing, or other factors.
 Due in one year or less Due after one year to five years Due after five years Total Due in one year or less Due after one year to five years Due after five years Total
 (in thousands) (in thousands)
Commercial and industrial                
Floating rate $1,543,967
 $2,202,641
 $909,452
 $4,656,060
 $2,451,864
 $3,441,591
 $1,369,159
 $7,262,614
Fixed rate 61,635
 603,319
 1,520,367
 2,185,321
 91,335
 833,937
 1,215,960
 2,141,232
Commercial real estate — non-owner occupied                
Floating rate 340,823
 1,594,339
 515,130
 2,450,292
 543,071
 2,113,368
 642,467
 3,298,906
Fixed rate 162,448
 869,577
 421,694
 1,453,719
 190,053
 1,194,158
 562,517
 1,946,728
Commercial real estate — owner occupied                
Floating rate 52,198
 163,885
 969,816
 1,185,899
 82,498
 192,699
 929,909
 1,205,106
Fixed rate 57,120
 287,126
 711,468
 1,055,714
 51,837
 301,032
 758,938
 1,111,807
Construction and land development                
Floating rate 712,953
 718,719
 83,949
 1,515,621
 746,293
 932,849
 142,057
 1,821,199
Fixed rate 32,735
 41,825
 42,023
 116,583
 24,303
 57,846
 48,808
 130,957
Residential real estate                
Floating rate 17,916
 51,189
 144,126
 213,231
 25,962
 35,122
 719,539
 780,623
Fixed rate 8,391
 15,974
 188,344
 212,709
 3,218
 6,888
 1,356,935
 1,367,041
Consumer                
Floating rate 32,201
 2,399
 3,556
 38,156
 31,735
 12,063
 2,350
 46,148
Fixed rate 2,252
 2,382
 5,996
 10,630
 3,477
 3,509
 3,949
 10,935
Total $3,024,639
 $6,553,375
 $5,515,921
 $15,093,935
 $4,245,646
 $9,125,062
 $7,752,588
 $21,123,296
As of December 31, 2017,2019, approximately $6.88$9.7 billion, or 68.4%67.6%, of total variable rate loans were subject to rate floors with a weighted average interest rate of 4.7%4.8%. At December 31, 2016,2018, approximately $6.32$8.3 billion, or 71.9%69.3% of total variable rate loans were subject to rate floors with a weighted average interest rate of 4.7%4.8%. At December 31, 2017,2019, total loans consisted of 66.6%68.2% with floating rates and 33.4%31.8% with fixed rates, compared to 66.6%67.3% with floating rates and 33.4%32.7% with fixed rates at December 31, 2016.2018.
Concentrations of Lending Activities
The Company monitors concentrations within four broad categories: product, collateral, geography, and industry. The Company’s loan portfolio includes significant credit exposure to the CRE market. At December 31, 20172019 and 2016,2018, CRE related loans accounted for approximately 52%45% and 53%49% of total loans, respectively. Substantially all of these loans are secured by first liens with an initial loan to value ratio of generally not more than 75%. Approximately 31% and 36% of these CRE loans, excluding construction and land loans, were owner-occupiedowner occupied at each of the periods ended December 31, 20172019 and 2016.
Interest Reserves
Interest reserves are generally established at the time of the loan origination for construction and land development loans. The Company’s practice is to monitor the construction, sales and/or leasing progress to determine the feasibility of ongoing construction and development projects. The Company discontinues the use of the interest reserve when a project is determined not to be viable and may take appropriate action to protect its collateral position via renegotiation and/or legal action as deemed appropriate. At December 31, 2017, the Company had 45 loans with an outstanding balance of $180.0 million with available interest reserves of $3.8 million. At December 31, 2016, the Company had 31 loans with an outstanding principal balance of $118.6 million and available interest reserve amounts of $3.6 million.

2018, respectively.
Impaired loans
A loan is identified as impaired when it is no longer probable that interest and principal will be collected according to the contractual terms of the original loan agreement. Generally, impaired loans are classified as non-accrual. However, in certain instances, impaired loans may continue on an accrual basis if full repayment of all principal and interest is expected and the loan is both well-secured and in the process of collection. Impaired loans are measured for reserve requirements in accordance with ASC 310 based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the collateral less applicable disposition costs if the loan is collateral dependent. The amount of an impairment reserve, if any, and any subsequent changes are charged against the allowance for credit losses.
In addition to the Company's own internal loan review process, regulators may from time to time direct the Company to modify loan grades, loan impairment calculations, or loan impairment methodology.

Total non-performing loans decreasedincreased by $8.6$19.5 million, or 9.0%30.1%, at December 31, 20172019 to $86.4$84.3 million from $95.0$64.8 million at December 31, 2016. 2018.
 December 31, December, 31
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (dollars in thousands) (dollars in thousands)
Total non-accrual loans (1) $43,925
 $40,272
 $48,381
 $67,659
 $75,680
 $55,968
 $27,746
 $43,925
 $40,272
 $48,381
Loans past due 90 days or more on accrual status (2) 43
 1,067
 3,028
 5,132
 1,534
 
 594
 43
 1,067
 3,028
Accruing troubled debt restructured loans 42,431
 53,637
 70,707
 84,720
 89,576
 28,356
 36,458
 42,431
 53,637
 70,707
Total nonperforming loans, excluding loans acquired with deteriorated credit quality 86,399
 94,976
 122,116
 157,511
 166,790
 84,324
 64,798
 86,399
 94,976
 122,116
Other impaired loans 12,155
 4,233
 6,758
 9,239
 11,587
 31,979
 47,454
 12,155
 4,233
 6,758
Total impaired loans $98,554
 $99,209
 $128,874
 $166,750
 $178,377
 $116,303
 $112,252
 $98,554
 $99,209
 $128,874
Other assets acquired through foreclosure, net $28,540
 $47,815
 $43,942
 $57,150
 $66,719
 $13,850
 $17,924
 $28,540
 $47,815
 $43,942
Non-accrual loans to gross loans held for investment 0.29% 0.31% 0.44% 0.81% 1.11% 0.27% 0.16% 0.29% 0.31% 0.44%
Loans past due 90 days or more on accrual status to gross loans held for investment 0.00
 0.01
 0.03
 0.06
 0.02
 
 0.00
 0.00
 0.01
 0.03
Interest income received on non-accrual loans $1,614
 $1,254
 $1,634
 $2,536
 $1,916
Interest income that would have been recorded under the original terms of non-accrual loans 2,444
 2,045
 2,549
 3,758
 5,405
 2,170
 2,268
 2,444
 2,045
 2,549
(1)Includes non-accrual TDR loans of $10.1$10.6 million and $7.1$8.0 million at December 31, 20172019 and 2016,2018, respectively.
(2)Includes less than $0.1 million from loans acquired with deteriorated credit quality at each of the periods ended December 31, 2017 and 2016.
The composition of non-accrual loans by loan type and by segment were as follows: 
 December 31, 2017 December 31, 2016 December 31, 2019 December 31, 2018
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI
Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI
Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI Loans
 Non-accrual
Balance
 Percent of Non-Accrual Balance Percent of
Total HFI Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $22,026
 50.14% 0.15% $16,967
 42.13% 0.13% $24,501
 43.77% 0.12% $15,090
 54.39% 0.09%
Commercial real estate 7,721
 17.58
 0.05
 16,666
 41.39
 0.13
 23,720
 42.38
 0.11
 
 
 
Construction and land development 5,979
 13.61
 0.04
 1,284
 3.19
 0.01
 2,147
 3.84
 0.01
 476
 1.71
 0.00
Residential real estate 8,117
 18.48
 0.05
 5,192
 12.89
 0.04
 5,600
 10.01
 0.03
 11,939
 43.03
 0.07
Consumer 82
 0.19
 0.00
 163
 0.40
 0.00
 
 
 
 241
 0.87
 0.00
Total non-accrual loans $43,925
 100.00% 0.29% $40,272
 100.00% 0.31% $55,968
 100.00% 0.27% $27,746
 100.00% 0.16%
 December 31, 2017 December 31, 2016 December 31, 2019 December 31, 2018
 Nonaccrual Loans Percent of Segment's Total HFI Loans Nonaccrual Loans Percent of Segment's Total HFI Loans Nonaccrual Loans Percent of Segment's Total HFI Loans Nonaccrual Loans Percent of Segment's Total
HFI Loans
 (dollars in thousands) (dollars in thousands)
Arizona $4,520
 0.14% $10,424
 0.35% $29,062
 0.76% $8,312
 0.23%
Nevada 8,189
 0.44
 10,407
 0.60
 8,001
 0.36
 6,374
 0.32
Southern California 8,140
 0.42
 2,891
 0.16
 1,759
 0.08
 8,564
 0.40
Northern California 14,489
 1.14
 4,408
 0.41
 5,193
 0.40
 4,255
 0.33
Public & Nonprofit Finance 2,147
 0.13
 
 
Technology and Innovation 7,389
 0.67
 8,813
 0.87
 5,867
 0.38
 
 
Other NBLS 51
 0.00
 166
 0.01
Corporate & Other (1) 1,147
 28.09
 3,163
 23.22
Other NBLs 3,939
 0.06
 241
 0.00
Total non-accrual loans $43,925
 0.29% $40,272
 0.31% $55,968
 0.27% $27,746
 0.16%
(1)    The Corporate & Other segment manages certain legacy non-performing loans and OREO.
Troubled Debt Restructured Loans
A TDR loan is a loan that is granted a concession, for reasons related to a borrower’s financial difficulties, that the lender would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in accrued interest, extensions, deferrals, renewals, and rewrites. A TDR loan is also considered impaired. Generally, a loan that is modified at an effective market rate of interest is no longer disclosed as a TDR in years subsequent to the restructuring if it is performing based on the terms specified by the restructuring agreement. However, such loans continue to be considered impaired.
As of December 31, 20172019 and 2016,2018, the aggregate amount of loans classified as impaired was $98.6$116.3 million and $99.2$112.3 million, respectively, a net decreaseincrease of 0.7%3.6%. The total specific allowance for credit losses related to these loans was $5.6$2.8 million and $4.2$0.7 million at December 31, 20172019 and 2016,2018, respectively. The Company had $42.4$28.4 million and $53.6$36.5 million in loans classified as accruing restructured loanloans at December 31, 20172019 and 2016,2018, respectively.
Impaired loans by segment at December 31, 2017 and 2016 were as follows:
  December 31,
  2017 2016
  (in thousands)
Arizona $10,468
 $19,180
Nevada 46,730
 48,348
Southern California 8,465
 2,888
Northern California 14,489
 4,024
Technology & Innovation 16,449
 8,461
Other NBLs 51
 163
Corporate & Other 1,902
 16,145
Total impaired loans $98,554
 $99,209

The following tables present a breakdown of total impaired loans and the related specific reserves for the periods indicated: 
 December 31, 2017 December 31, 2019
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $34,156
 34.66% 0.23% $5,606
 100.00% 4.00% $48,984
 42.12% 0.23% $1,050
 37.83% 0.62%
Commercial real estate 31,681
 32.15
 0.21
 
 
 
 53,274
 45.81
 0.25
 1,219
 43.91
 0.73
Construction and land development 15,426
 15.65
 0.10
 
 
 
 8,421
 7.23
 0.04
 507
 18.26
 0.30
Residential real estate 17,170
 17.42
 0.11
 
 
 
 5,600
 4.82
 0.03
 
 
 
Consumer 121
 0.12
 0.00
 
 
 
 24
 0.02
 0.00
 
 
 
Total impaired loans $98,554
 100.00% 0.65% $5,606
 100.00% 4.00% $116,303
 100.00% 0.55% $2,776
 100.00% 1.65%
 December 31, 2016 December 31, 2018
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 Impaired
Balance
 Percent of Impaired Balance Percent of
Total HFI Loans
 Reserve
Balance
 Percent of Reserve Balance Percent of
Total Allowance
 (dollars in thousands) (dollars in thousands)
Commercial and industrial $21,462
 21.63% 0.16% $3,301
 77.88% 2.65% $63,896
 56.92% 0.36% $621
 91.19% 0.41%
Commercial real estate 46,272
 46.64
 0.36
 937
 22.10
 0.75
 18,937
 16.87
 0.11
 
 
 
Construction and land development 14,838
 14.96
 0.11
 
 
 
 9,403
 8.38
 0.05
 
 
 
Residential real estate 16,391
 16.52
 0.12
 
 
 
 19,744
 17.59
 0.11
 60
 8.81
 0.04
Consumer 246
 0.25
 0.00
 1
 0.02
 0.00
 272
 0.24
 0.00
 
 
 
Total impaired loans $99,209
 100.00% 0.75% $4,239
 100.00% 3.40% $112,252
 100.00% 0.63% $681
 100.00% 0.45%
Impaired loans by segment at December 31, 2019 and 2018 were as follows:
  December 31,
  2019 2018
  (in thousands)
Arizona $62,175
 $34,899
Nevada 25,667
 33,860
Southern California 6,630
 8,576
Northern California 9,878
 4,928
Public & Nonprofit Finance 2,147
 
Technology & Innovation 5,867
 29,748
Other NBLs 3,939
 241
Total impaired loans $116,303
 $112,252


The amount of interest income recognized on impaired loans for the years ended December 31, 2017, 2016,2019, 2018, and 20152017 was approximately $5.0 million, $4.5 million, and $4.0 million, $4.2 million, and $4.8 million, respectively.

Allowance for Credit Losses
The following table summarizes the activity in the Company's allowance for credit losses for the period indicated: 
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2014 2013 2019 2018 2017 2016 2015
 (dollars in thousands) (dollars in thousands)
Allowance for credit losses:                    
Balance at beginning of period $124,704
 $119,068
 $110,216
 $100,050
 $95,427
 $152,717
 $140,050
 $124,704
 $119,068
 $110,216
Provision charged to operating expense:                    
Commercial and industrial 14,268
 10,638
 18,411
 14,551
 5,760
 3,039
 13,198
 14,268
 10,638
 18,411
Commercial real estate 5,347
 (2,449) (9,762) (6,176) 2,972
 11,674
 2,177
 5,347
 (2,449) (9,762)
Construction and land development (2,805) 1,732
 (1,454) 1,966
 3,443
 1,431
 1,482
 (2,805) 1,732
 (1,454)
Residential real estate 318
 (2,137) (3,539) (4,352) 228
 2,620
 5,867
 318
 (2,137) (3,539)
Consumer 122
 216
 (456) (1,263) 817
 (264) 276
 122
 216
 (456)
Total Provision 17,250
 8,000
 3,200
 4,726
 13,220
 18,500
 23,000
 17,250
 8,000
 3,200
Recoveries of loans previously charged-off:                    
Commercial and industrial (3,112) (3,991) (3,754) (4,728) (5,037) (4,265) (2,427) (3,112) (3,991) (3,754)
Commercial real estate (2,897) (5,690) (4,139) (3,859) (2,758) (909) (1,237) (2,897) (5,690) (4,139)
Construction and land development (1,229) (485) (1,872) (2,160) (2,060) (91) (1,433) (1,229) (485) (1,872)
Residential real estate (1,778) (875) (2,181) (1,896) (2,097) (412) (947) (1,778) (875) (2,181)
Consumer (84) (144) (203) (459) (930) (25) (43) (84) (144) (203)
Total recoveries (9,100) (11,185) (12,149) (13,102) (12,882) (5,702) (6,087) (9,100) (11,185) (12,149)
Loans charged-off:                    
Commercial and industrial 8,186
 12,477
 5,550
 4,370
 4,000
 8,120
 15,034
 8,186
 12,477
 5,550
Commercial real estate 2,269
 728
 
 964
 8,648
 139
 233
 2,269
 728
 
Construction and land development 
 18
 
 87
 1,538
 141
 1
 
 18
 
Residential real estate 447
 165
 820
 1,728
 5,922
 594
 1,038
 447
 165
 820
Consumer 102
 161
 127
 513
 1,371
 128
 114
 102
 161
 127
Total charged-off 11,004
 13,549
 6,497
 7,662
 21,479
 9,122
 16,420
 11,004
 13,549
 6,497
Net charge-offs (recoveries) 1,904
 2,364
 (5,652) (5,440) 8,597
 3,420
 10,333
 1,904
 2,364
 (5,652)
Balance at end of period $140,050
 $124,704
 $119,068
 $110,216
 $100,050
 $167,797
 $152,717
 $140,050
 $124,704
 $119,068
Net charge-offs (recoveries) to average loans outstanding 0.01% 0.02% (0.06)% (0.07)% 0.14% 0.02% 0.06% 0.01% 0.02% (0.06)%
Allowance for credit losses to gross loans 0.93
 0.95
 1.07
 1.31
 1.47
 0.80
 0.86
 0.93
 0.95
 1.07
Allowance for credit losses to gross organic loans 1.03
 1.11
 1.23
 1.36
 1.75
 0.82
 0.92
 1.03
 1.11
 1.23

The following table summarizes the allocation of the allowance for credit losses by loan type. However, the allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. 
 Commercial and Industrial Commercial Real Estate Construction and Land Development Residential Real Estate Consumer Total Commercial and Industrial Commercial Real Estate Construction and Land Development Residential Real Estate Consumer Total
 (dollars in thousands) (dollars in thousands)
December 31, 2019            
Allowance for credit losses $82,302
 $47,273
 $23,894
 $13,714
 $614
 $167,797
Percent of total allowance for credit losses 49.0% 28.2% 14.2% 8.2% 0.4% 100.0%
Percent of loan type to total HFI loans 44.5
 35.8
 9.2
 10.2
 0.3
 100.0
December 31, 2018            
Allowance for credit losses $83,118
 $34,829
 $22,513
 $11,276
 $981
 $152,717
Percent of total allowance for credit losses 54.4% 22.8% 14.8% 7.4% 0.6% 100.0%
Percent of loan type to total HFI loans 43.8
 36.9
 12.1
 6.8
 0.4
 100.0
December 31, 2017                        
Allowance for Credit Losses $82,527
 $31,648
 $19,599
 $5,500
 $776
 $140,050
Percent of Total Allowance for Credit Losses 58.9% 22.6% 14.0% 3.9% 0.6% 100.0%
Percent of Gross Loans to Total Gross HFI Loans 45.2
 40.8
 10.9
 2.8
 0.3
 100.0
Allowance for credit losses $82,527
 $31,648
 $19,599
 $5,500
 $776
 $140,050
Percent of total allowance for credit losses 58.9% 22.6% 14.0% 3.9% 0.6% 100.0%
Percent of loan type to total HFI loans 45.2
 40.8
 10.9
 2.8
 0.3
 100.0
December 31, 2016                        
Allowance for Credit Losses $73,333
 $25,673
 $21,175
 $3,851
 $672
 $124,704
Percent of Total Allowance for Credit Losses 58.8% 20.6% 17.0% 3.1% 0.5% 100.0%
Percent of Gross Loans to Total Gross HFI Loans 44.3
 42.1
 11.3
 2.0
 0.3
 100.0
Allowance for credit losses $73,333
 $25,673
 $21,175
 $3,851
 $672
 $124,704
Percent of total allowance for credit losses 58.8% 20.6% 17.0% 3.1% 0.5% 100.0%
Percent of loan type to total HFI loans 44.3
 42.1
 11.3
 2.0
 0.3
 100.0
December 31, 2015                        
Allowance for Credit Losses $71,181
 $23,160
 $18,976
 $5,278
 $473
 $119,068
 $71,181
 $23,160
 $18,976
 $5,278
 $473
 $119,068
Percent of Total Allowance for Credit Losses 59.8% 19.5% 15.9% 4.4% 0.4% 100.0% 59.8% 19.5% 15.9% 4.4% 0.4% 100.0%
Percent of Gross Loans to Total Gross HFI Loans 47.4
 39.3
 10.2
 2.9
 0.2
 100.0
December 31, 2014            
Allowance for Credit Losses $54,566
 $28,783
 $18,558
 $7,456
 $853
 $110,216
Percent of Total Allowance for Credit Losses 49.5% 26.1% 16.8% 6.8% 0.8% 100.0%
Percent of Gross Loans to Total Gross HFI Loans 42.0
 45.0
 9.0
 3.6
 0.4
 100.0
December 31, 2013            
Allowance for Credit Losses $39,657
 $32,064
 $14,519
 $11,640
 $2,170
 $100,050
Percent of Total Allowance for Credit Losses 39.7% 32.0% 14.5% 11.6% 2.2% 100.0%
Percent of Gross Loans to Total Gross HFI Loans 36.3
 50.0
 7.9
 5.1
 0.7
 100.0
Percent of loan type to total HFI loans 47.4
 39.3
 10.2
 2.9
 0.2
 100.0
Problem Loans
The Company classifies loans consistent with federal banking regulations using a nine category grading system. These loan grades are described in further detail in "Item 1. Business” of this Form 10-K. The following table presents information regarding potential and actual problem loans, consisting of loans graded Special Mention, Substandard, Doubtful, and Loss, but still performing, and excluding acquired loans:
 December 31, 2017 December 31, 2019
 Number of Loans Loan Balance Percent of Loan Balance Percent of Total HFI Loan Balance Number of Loans Loan Balance Percent of Loan Balance Percent of Total HFI Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 166
 $127,015
 51.63% 0.84% 73
 $96,464
 43.06% 0.46%
Commercial real estate 48
 90,653
 36.85
 0.60
 37
 107,839
 48.14
 0.51
Construction and land development 5
 18,471
 7.51
 0.12
 10
 18,971
 8.47
 0.09
Residential real estate 3
 8,971
 3.65
 0.06
 3
 727
 0.33
 0.00
Consumer 10
 880
 0.36
 0.01
 1
 10
 0.00
 0.00
Total 232
 $245,990
 100.00% 1.63% 124
 $224,011
 100.00% 1.06%
 December 31, 2016 December 31, 2018
 Number of Loans Loan Balance Percent of Loan Balance Percent of Total HFI Loan Balance Number of Loans Loan Balance Percent of Loan Balance Percent of Total
HFI Loans
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 96
 $92,019
 51.65% 0.70% 107
 $125,585
 62.37% 0.71%
Commercial real estate 41
 71,900
 40.36
 0.55
 42
 71,116
 35.32
 0.40
Construction and land development 7
 12,297
 6.90
 0.09
 3
 4,040
 2.01
 0.02
Residential real estate 9
 1,831
 1.03
 0.01
 1
 527
 0.26
 0.00
Consumer 9
 103
 0.06
 
 2
 75
 0.04
 0.00
Total 162
 $178,150
 100.00% 1.35% 155
 $201,343
 100.00% 1.13%


Other Assets Acquired Through Foreclosure
The following table represents the changes in other assets acquired through foreclosure: 
  Year Ended December 31,
  2017
  Gross Balance Valuation Allowance Net Balance
  (in thousands)
Balance, beginning of period $54,138
 $(6,323) $47,815
Transfers to other assets acquired through foreclosure, net 1,812
 
 1,812
Proceeds from sale of other real estate owned and repossessed assets, net (23,626) 2,431
 (21,195)
Valuation adjustments, net 
 (120) (120)
(Losses) gains, net (1) 228
 
 228
Balance, end of period $32,552
 $(4,012) $28,540
       
  2016
Balance, beginning of period $52,984
 $(9,042) $43,942
Transfers to other assets acquired through foreclosure, net 13,110
 
 13,110
Proceeds from sale of other real estate owned and repossessed assets, net (11,584) 2,451
 (9,133)
Valuation adjustments, net 
 268
 268
Gains (losses), net (1) (372) 
 (372)
Balance, end of period $54,138
 $(6,323) $47,815
       
  2015
Balance, beginning of period $71,421
 $(14,271) $57,150
Transfers to other assets acquired through foreclosure, net 28,566
 
 28,566
Additions from acquisition 1,407
 
 1,407
Proceeds from sale of other real estate owned and repossessed assets, net (51,038) 5,411
 (45,627)
Valuation adjustments, net 
 (182) (182)
Gains (losses), net (1) 2,628
 
 2,628
Balance, end of period $52,984
 $(9,042) $43,942
(1)Includes net gains related to initial transfers to other assets of $0.1 million, $0.4 million, and $0.9 million during the years ended December 31, 2017, 2016, and 2015, respectively.
Other assets acquired through foreclosure consist primarily of properties acquired as a result of, or in-lieu-of, foreclosure. OREO and other repossessed property are reported at the lower of carrying value or fair value less estimated costs to sell the property. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense. The Company has $28.5 million, $47.8 million, and $43.9 million of such assets at December 31, 2017, 2016, and 2015 respectively.
At December 31, 2017, the Company held 19 OREO properties, compared to 31 at December 31, 2016.
Goodwill and Other Intangible Assets
Goodwill represents the excess consideration paid for net assets acquired in a business combination over their fair value. Goodwill and other intangible assets acquired in a business combination andthat are determined to have an indefinite useful life are not subject to amortization, but are subsequently evaluated for impairment at least annually. The Company'sCompany has goodwill totalsof $289.9 million and intangible assets totaling $7.7 million as of December 31, 2017, of2019, which $23.2 million relateshave been allocated to the Nevada, operating segment, $149.7 million relates to the Northern California, segment, $116.9 million relates to the Technology & Innovation, segment, and $0.1 million relates to the HFF segment. Intangible assets total $10.9 million at December 31, 2017. See "Note 20. Mergers, Acquisitions and Dispositions" to the Consolidated Financial Statements for further discussion of the HFF and Bridge acquisitions and the allocation of goodwill and intangible assets acquired.operating segments.
The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. During the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, there were no events or circumstances that indicated an interim impairment test of goodwill or other intangible assets

was necessary and, based on the Company's annual goodwill and intangibles impairment tests as of October 1 of each of these years, it was determined that goodwill and intangible assets are not impaired.
The fair value of assets acquired and liabilities assumed are subject to adjustment during the first twelve months after the acquisition date if additional information becomes available to indicate a more accurate or appropriate value for an asset or liability. The Company recognized initial goodwill of $0.2 million related to the HFF loan portfolio purchase, which closed on April 20, 2016. During the year ended December 31, 2017, the Company recognized measurement period adjustments related to the HFF acquisition that totaled $0.1 million for tax related items. The measurement period for the HFF acquisition ended on April 20, 2017, and therefore, the fair values of these assets acquired and liabilities assumed were considered final effective as of that date.
The following is a summary of acquired intangible assets:
 December 31, 2017 December 31, 2016 December 31, 2019 December 31, 2018
 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount
 (in thousands) (in thousands)
Subject to amortization                        
Core deposit intangibles $14,647
 $4,144
 $10,503
 $40,804
 $28,227
 $12,577
 $14,647
 $7,284
 $7,363
 $14,647
 $5,737
 $8,910
                        
 December 31, 2017 December 31, 2016 December 31, 2019 December 31, 2018
 Gross Carrying Amount Impairment Net Carrying Amount Gross Carrying Amount Impairment Net Carrying Amount Gross Carrying Amount Impairment Net Carrying Amount Gross Carrying Amount Impairment Net Carrying Amount
 (in thousands) (in thousands)
Not subject to amortization                        
Trade name $350
 $
 $350
 $350
 $
 $350
 $350
 $
 $350
 $350
 $
 $350
Deferred Tax Assets
For the year endedNet deferred tax assets decreased $14.0 million to $18.0 million from December 31, 2017, the net deferred tax asset decreased $89.4 million to $5.8 million.2018. This overall decrease in the net deferred tax assetassets was primarily the result of deferring taxable incomeincreases in the fair market value of AFS securities. In addition, there was a large decrease to future periods and accelerating deductionsthe overall estimated loss reserve, which were only partiallywas largely offset by the creationincreases to DTLs related to premises and equipment and income associated with tax credits for lease pass-through transactions (50(d) income).
As of NOL and tax credit carryovers and the revaluation of deferred taxes under the 2017 Tax Cuts and Jobs Act.
At each of the periods ended December 31, 2017 and 2016,2019, the Company hadhas no deferred tax valuation allowance. As of December 31, 2018, the Company's deferred tax valuation allowance of $2.4 million related to net capital loss carryovers.
Deposits
Deposits are the primary source for funding the Company's asset growth. Total deposits increased to $16.97$22.8 billion at December 31, 2017,2019 from $14.55$19.2 billion at December 31, 2016,2018, an increase of $2.42$3.6 billion, or 16.7%18.9%. The increase in deposits is attributable to organican increase across all deposit growth. Non-interest-bearingtypes, with the largest increases in savings and money market deposits of $1.8 billion and non-interest-bearing demand deposits increased by $1.80of $1.1 billion from December 31, 2016. Savings and money market deposits increased $210.1 million from December 31, 2016.2018.
WAB is a participant in the Promontory Interfinancial Network, a network that offers deposit placement services such as CDARS and ICS, which offer products that qualify large deposits for FDIC insurance. At December 31, 2017,2019, the Company has $401.4$407.7 million of CDARS deposits and $617.9$661.8 million of ICS deposits, compared to $413.9$322.9 million of CDARS deposits and $607.5$706.9 million of ICS deposits at December 31, 2016.2018. At December 31, 20172019 and 2016,2018, the Company also has $67.3 million$1.1 billion and $136.2$718.2 million, respectively, of wholesale brokered deposits.
In addition, non-interest bearing deposits for which the Company provides account holders with earnings credits or referral fees totaled $1.85$3.1 billion and $1.10$2.3 billion at December 31, 20172019 and 2016,2018, respectively. The Company incurred $8.7$30.5 million and $4.0$18.0 million in deposit related costs on these deposits during the year ended December 31, 20172019 and 2016,2018, respectively.

These costs are reported in deposit costs as part of non-interest expense. The increase in these costs relates to both an increase in deposits eligible for earnings credits, along with higher average earnings credits paid during the first half of 2019.

The average balances and weighted average rates paid on deposits are presented below:
  Year Ended December 31,
  2017 2016 2015
  Average Balance Rate Average Balance Rate Average Balance Rate
  (dollars in thousands)
Interest-bearing transaction accounts $1,467,231
 0.27% $1,217,344
 0.18% $983,889
 0.18%
Savings and money market accounts 6,208,057
 0.42
 5,827,549
 0.33
 4,470,189
 0.28
Time certificates of deposit 1,560,896
 0.76
 1,615,502
 0.50
 1,808,120
 0.42
Total interest-bearing deposits 9,236,184
 0.45
 8,660,395
 0.34
 7,262,198
 0.30
Non-interest-bearing demand deposits 6,788,783
 
 5,062,319
 
 3,273,138
 
Total deposits $16,024,967
 0.26% $13,722,714
 0.22% $10,535,336
 0.21%
Although the Company does not pay interest to depositors of non-interest bearing accounts, earnings credits are awarded to some account holders, which offset charges incurred by account holders for other services.
  Year Ended December 31,
  2019 2018 2017
  Average Balance Rate Average Balance Rate Average Balance Rate
  (dollars in thousands)
Interest-bearing transaction accounts $2,545,806
 0.82% $1,891,160
 0.61% $1,467,231
 0.27%
Savings and money market accounts 8,125,832
 1.18
 6,501,241
 0.85
 6,208,057
 0.42
Certificates of deposit 2,117,177
 1.98
 1,748,675
 1.37
 1,560,896
 0.76
Total interest-bearing deposits 12,788,815
 1.24
 10,141,076
 0.89
 9,236,184
 0.45
Non-interest-bearing demand deposits 8,246,232
 
 7,712,791
 
 6,788,783
 
Total deposits $21,035,047
 0.75% $17,853,867
 0.51% $16,024,967
 0.26%
Certificates of Deposit of $100,000 or More
The table below discloses the remaining maturity for certificates of deposit of $100,000 or more: 
 December 31, December 31,
 2017 2016 2019 2018
 (in thousands) (in thousands)
3 months or less $536,116
 $453,260
 $945,551
 $682,549
3 to 6 months 440,732
 465,089
 596,467
 446,847
6 to 12 months 329,026
 274,323
 597,496
 409,736
Over 12 months 142,161
 99,258
 101,615
 99,211
Total $1,448,035
 $1,291,930
 $2,241,129
 $1,638,343
Other Borrowings
The Company from time to time utilizes short-term borrowed funds to support short-term liquidity needs generally created by increased loan demand. The majority of these short-term borrowed funds consist of advances from the FHLB, Federal funds purchased, and customer repurchase agreements. The Company’s borrowing capacity with the FHLB is determined based on collateral pledged, generally consisting of securities and loans. In addition, the Company has borrowing capacity from other sources, collateralized by securities, including Federal funds purchased and securities sold under agreements to repurchase. Federal funds purchased are unsecured borrowings with other banks. Securities sold under agreements to repurchase whichare collateralized by securities and are reflected at the amount of cash received in connection with the transaction, and may require additional collateral based on the fair value of the underlying securities. At December 31, 2017,2019, total short-term borrowed funds consist of customer repurchase agreements of $26.0 million and FHLB overnight advances of $390.0$16.7 million. At December 31, 2016,2018, total short-term borrowed funds consisted of Federal funds purchased of $256.0 million, FHLB overnight advances of $235.0 million, and customer repurchase agreements of $41.7 million and FHLB advances of $80.0$22.4 million.
At December 31, 2017 and 2016, the Company does not have any borrowings classified as long-term.

Qualifying Debt
Qualifying debt consists of subordinated debt and junior subordinated debt, inclusive of issuance costs and fair market value adjustments. At December 31, 2017,2019, the carrying value of all subordinated debt issuances, which includes the fair value of related hedges, was $308.6$319.2 million, compared to $305.8$299.4 million at December 31, 2016.2018.
The junior subordinated debt has contractual balances and maturity dates as follows:
 December 31, December 31,
Name of Trust Maturity 2017 2016 Maturity 2019 2018
At fair value (in thousands) (in thousands)
BankWest Nevada Capital Trust II 2033 $15,464
 $15,464
 2033 $15,464
 $15,464
Intermountain First Statutory Trust I 2034 10,310
 10,310
 2034 10,310
 10,310
First Independent Statutory Trust I 2035 7,217
 7,217
 2035 7,217
 7,217
WAL Trust No. 1 2036 20,619
 20,619
 2036 20,619
 20,619
WAL Statutory Trust No. 2 2037 5,155
 5,155
 2037 5,155
 5,155
WAL Statutory Trust No. 3 2037 7,732
 7,732
 2037 7,732
 7,732
Total contractual balance 66,497
 66,497
 66,497
 66,497
FVO on junior subordinated debt (10,263) (16,087) (4,812) (17,812)
Junior subordinated debt, at fair value $56,234
 $50,410
 $61,685
 $48,685
At amortized cost        
Bridge Capital Holdings Trust I 2035 $12,372
 $12,372
 2035 $12,372
 $12,372
Bridge Capital Holdings Trust II 2036 5,155
 5,155
 2036 5,155
 5,155
Total contractual balance 17,527
 17,527
 17,527
 17,527
Purchase accounting adjustment, net of accretion (1) (5,465) (5,776) (4,845) (5,155)
Junior subordinated debt, at amortized cost $12,062
 $11,751
 $12,682
 $12,372
        
Total junior subordinated debt $68,296
 $62,161
 $74,367
 $61,057
(1)The purchase accounting adjustment is being amortized over the remaining life of the trusts, pursuant to accounting guidance.
The weighted average interest rate of all junior subordinated debt as of December 31, 20172019 was 4.03%4.25%, which is three-month LIBOR plus the contractual spread of 2.34%, compared to a weighted average interest rate of 3.34%5.15% at December 31, 2016.

2018.

Capital Resources
The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements could trigger certain mandatory or discretionary actions that, if undertaken, could have a direct material effect on the Company’s business and financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items (discussed in "Note 15. Commitments and Contingencies" to the Consolidated Financial Statements) as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
Under the Basel III final rules, a capital conservation buffer, comprised of Common Equity Tier 1 capital, was established above the regulatory minimum capital requirements. This capital conservation buffer began being phased in on January 1, 2016 at 0.625% of risk-weighted assets and will increase each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019.
As of December 31, 20172019 and 2016,2018, the Company and the BankBank's capital ratios exceeded the capital levels necessary to be classified as well-capitalized thresholds, as defined by the banking agencies. The actual capital amounts and ratios for the Company and the Bank are presented in the following tables as of the periods indicated:
 Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
 Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
 (dollars in thousands) (dollars in thousands)

                                
December 31, 2017                
December 31, 2019                
WAL $2,460,988
 $2,013,744
 $18,569,608
 $19,624,517
 13.3% 10.8% 10.3% 10.4% $3,257,874
 $2,775,390
 $25,390,142
 $26,110,275
 12.8% 10.9% 10.6% 10.6%
WAB 2,299,919
 2,003,745
 18,664,200
 19,541,990
 12.3
 10.7
 10.3
 10.7
 3,030,301
 2,703,549
 25,452,261
 26,134,431
 11.9
 10.6
 10.3
 10.6
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5
         8.0
 6.0
 4.0
 4.5

                                
December 31, 2016                
December 31, 2018                
WAL $2,107,480
 $1,675,871
 $15,980,092
 $16,868,674
 13.2% 10.5% 9.9% 10.0% $2,897,356
 $2,431,320
 $21,983,976
 $22,204,799
 13.2% 11.1% 10.9% 10.7%
WAB 2,001,081
 1,720,072
 15,888,346
 16,764,327
 12.6
 10.8
 10.3
 10.8
 2,628,650
 2,317,745
 22,040,765
 22,209,700
 11.9
 10.5
 10.4
 10.5
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5
         8.0
 6.0
 4.0
 4.5
Common Stock Repurchase Plan
On December 12, 2018, the Company announced that it had adopted a common stock repurchase plan, pursuant to which the Company was authorized to repurchase up to $250 million of its shares of common stock through December 31, 2019. The Company had $94.3 million in authorized common stock repurchase capacity that expired under the original program as of December 31, 2019. The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock.
Contractual Obligations and Off-Balance Sheet Arrangements
The Company enters into contracts for services in the ordinary course of business that may require payment for services to be provided in the future and may contain penalty clauses for early termination of the contracts. To meet the financing needs of customers, the Company has financial instruments with off-balance sheet risk, including commitments to extend credit and standby letters of credit. The Company has also committed to irrevocably and unconditionally guarantee the payments or distributions with respect to the holders of preferred securities of the Company's eight statutory business trusts to the extent that the trusts have not made such payments or distributions:distributions, including: 1) accrued and unpaid distributions; 2) the redemption price; and 3) upon a dissolution or termination of the trust, the lesser of the liquidation amount and all accrued and unpaid distributions and the amount of assets of the trust remaining available for distribution. The Company does not believe that these off-balance sheet arrangements have or are reasonably likely to have a material effect on its financial condition, changes in financial condition, revenues or expenses, results of operations, liquidity, capital expenditures, or capital resources. However, there can be no assurance that such arrangements will not have a future effect.

The following table sets forth the Company's significant contractual obligations as of December 31, 2017:2019:
 Payments Due by Period Payments Due by Period
 Total Less Than 1 Year 1-3 Years 3-5 Years After 5 Years Total Less Than 1 Year 1-3 Years 3-5 Years After 5 Years
 (in thousands) (in thousands)
Time deposit maturities $1,621,384
 $1,457,335
 $156,939
 $6,904
 $206
 $2,376,976
 $2,259,182
 $113,190
 $4,604
 $
Qualifying debt 409,024
 
 
 
 409,024
 409,024
 
 
 
 409,024
Other borrowings 390,000
 390,000
 
 
 
Operating lease obligations 40,475
 10,962
 17,552
 7,902
 4,059
 90,145
 12,369
 19,637
 18,067
 40,072
Purchase obligations 66,590
 24,817
 24,915
 16,858
 
 103,303
 42,683
 49,301
 11,319
 
Total $2,527,473
 $1,883,114
 $199,406
 $31,664
 $413,289
 $2,979,448
 $2,314,234
 $182,128
 $33,990
 $449,096
Purchase obligations primarily relate to contracts for software licensing, and maintenance, and outsourced service providers.
Off-balance sheet commitments associated with outstanding letters of credit, commitments to extend credit, and credit card guarantees as of December 31, 20172019 are summarized below. Since commitments associated with letters of credit and commitments to extend credit may expire unused, the amounts shown do not necessarily reflect the actual future cash funding requirements. 
   Amount of Commitment Expiration per Period   Amount of Commitment Expiration per Period
 Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years After 5 Years Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years After 5 Years
 (in thousands) (in thousands)
Commitments to extend credit $5,851,158
 $2,348,898
 $1,998,695
 $500,392
 $1,003,173
 $8,348,421
 $2,873,303
 $3,170,848
 $1,299,506
 $1,004,764
Credit card commitments and financial guarantees 153,752
 153,752
 
 
 
 302,909
 302,909
 
 
 
Standby letters of credit 161,966
 133,297
 27,426
 1,243
 
Letters of credit 175,778
 156,375
 18,786
 617
 
Total $6,166,876
 $2,635,947
 $2,026,121
 $501,635
 $1,003,173
 $8,827,108
 $3,332,587
 $3,189,634
 $1,300,123
 $1,004,764
The following table sets forth certain information regarding short-term borrowings as of December 31, 20172019 and the respective prior year endyear-end balances for customer repurchase agreements, lines of credit,FHLB advances, and FHLB advances:Federal funds purchased: 
 December 31, December 31,
 2017 2016 2015 2019 2018 2017
 (dollars in thousands) (dollars in thousands)
Customer Repurchase Accounts:            
Maximum month-end balance $41,153
 $50,332
 $53,709
 $20,288
 $30,559
 $41,153
Balance at end of year 26,017
 41,728
 38,155
 16,675
 22,411
 26,017
Average balance 33,842
 41,623
 49,924
 17,182
 24,421
 33,842
Lines of Credit:      
Federal Funds Purchased      
Maximum month-end balance 
 5,000
 
 335,000
 256,000
 
Balance at end of year 
 
 
 
 256,000
 
Average balance 
 562
 1,740
 67,851
 20,542
 
FHLB Advances:            
Maximum month-end balance 440,000
 490,000
 330,000
 380,000
 625,000
 440,000
Balance at end of year 390,000
 80,000
 150,000
 
 235,000
 390,000
Average balance 29,781
 58,750
 66,493
 49,589
 215,699
 29,781
Total Short-Term Borrowed Funds $416,017
 $121,728
 $188,155
 $16,675
 $513,411
 $416,017
Weighted average interest rate at end of year 1.33% 0.42% 1.75% 0.15% 2.46% 1.33%
Weighted average interest rate during year 0.53
 0.44
 2.26
 1.99
 1.73
 0.53

Critical Accounting Policies
The Notes to the Consolidated Financial Statements contain a discussion of the Company's significant accounting policies, including information regarding recently issued accounting pronouncements, adoption of such policies, and the related impact of their adoption. The Company believes that certain of these policies, along with various estimates that it is required to make in recording its financial transactions, are important to have a complete understanding of the Company's financial position. In addition, these estimates require management to make complex and subjective judgments, many of which include matters with a high degree of uncertainty. The following is a summary of these critical accounting policies and significant estimates.
Allowance for credit losses
Credit risk is inherent in the business of extending loans and leases to borrowers, for which the Company must maintain an adequate allowance for credit losses. The allowance for credit losses is established through a provision for credit losses recorded to expense. Loans are charged against the allowance for credit losses when management believes that the contractual principal or interest will not be collected. Subsequent recoveries, if any, are credited to the allowance. The allowance is an amount believed adequate to absorb estimated probable losses on existing loans that may become uncollectable, based on evaluation of the collectability of loans and prior credit loss experience, together with other factors. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.
The allowance consists of specific and general components. The specific allowance relatesapplies to impaired loans. For impaired collateral dependent loans, the reserve is calculated based on the collateral value, net of estimated disposition costs. Generally, the Company obtains independent collateral valuation analysis for each loan over a specified dollar threshold every twelve12 months. Loans not collateral dependent are evaluated based on the expected future cash flows discounted at the original contractual interest rate. The Company's impairment analysis also incorporates various valuation considerations, including loan type, loss experience, and geographic criteria.
The general allowance covers all non-impaired loans and incorporates several quantitative and qualitative factors.factors, which are used for all of the Company's portfolio segments. Quantitative factors include company-specific, ten-year10-year historical net charge-offs stratified by loans with similar characteristics. Qualitative factors include: 1) levels of and trends in delinquencies and impaired loans; 2) levels of and trends in charge-offs and recoveries; 3) trends in volume and terms of loans; 4) changes in underwriting standards or lending policies; 5) experience, ability, depth of lending staff; 6) national and local economic trends and conditions; 7) changes in credit concentrations; 8) out-of-market exposures; 9) changes in quality of loan review system; and 10) changes in the value of underlying collateral.
Due to the credit concentration of the Company's loan portfolio in real estate secured loans, the value of collateral is heavily dependent on real estate values in Arizona, Nevada, Arizona, and California. While management uses the best information available to make its evaluation, future adjustments to the allowance may be necessary if there are significant changes in economic or other conditions. In addition, regulators, as an integral part of their examination processes, periodically review the Bank's allowancesallowance for credit losses, and may require the Bank to make additions to the allowance based on their judgment about information available to them at the time of their examination. Management regularly reviews the assumptions and formulae used in determining the allowance and makes adjustments if required to reflect the current risk profile of the portfolio.
Loans acquired with deteriorated credit quality
ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer, applies to a loan with evidence of deterioration of credit quality since its origination, and for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. For these loans accounted for under ASC 310-30, management determines the value of the loan portfolio based, in part, on work provided by an appraiser. Factors considered in the valuation are projected cash flows for the loans, type of loan and related collateral, loan grade, delinquency, and loan to value. Loans are grouped together according to similar characteristics and are treated in the aggregate when applying various valuation techniques. Loans are first evaluated individually to determine if there has been credit deterioration since origination. Once acquired loans are determined to have deteriorated credit quality, the Company evaluates such loans for common risk characteristics and aggregation into one or more pools. Common risk characteristics for pooling acquired loans may include credit ratings, loan type, collateral type, delinquency status, geographic location, loan to value, or combinations thereof. Management also estimates the amount of credit losses that are expected to be realized for individual loans by estimating the probability of default and the loss given default. These estimates are subjective. The accretion of the fair value adjustments attributable to interest rates on loans acquired with deteriorated credit quality is recorded in interest income in the Consolidated Income Statements over the estimated life of the pool. The fair value adjustment attributable to credit losses on these loans is non-accretable. When a loan is sold, paid off or transferred to OREO and liquidated, any remaining non-accretable yield is recorded in interest income.

Adjustments to these loan values in future periods may occur based on management's expectation of future cash flows to be collected over the lives of the loans. Estimating cash flows is performed at a pool level and incorporates analysis of historical cash flows, delinquencies, and charge-offs, as well as assumptions about future cash flows. Performance can vary from period to period, causing changes in estimates of the expected cash flows. If, based on the review of a pool of loans, it is probable that a significant increase or improvement in cash flows previously expected to be collected, any valuation allowance established for the pool of loans is first reduced for the increase in the present value of cash flows expected to be collected, and any remaining increase in estimated cash flows increases the accretable yield and is recognized over the remaining estimated life of the loan pool. If based on the review of a pool of loans, it is probable that a decrease or impairment in cash flows previously expected to be collected or if actual cash flows are less than cash flows previously expected, the allowance for credit losses is increased for the decrease in the present value of the cash flows expected to be collected.
Business Combinations
Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. Under the acquisition method, the acquiring entity in a business combination recognizes all of the acquired assets and assumed liabilities at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including identified intangible assets, exceeds the purchase price, a bargain purchase gain is recognized. Assets acquired and liabilities assumed from contingencies are also recognized at fair value if the fair value can be determined during the measurement period. Results of operations of an acquired business are included in the Consolidated Income Statement from the date of acquisition. Acquisition-related costs, including conversion and restructuring charges, are expensed as incurred.
Income taxes
The Company’s income tax expense, deferred tax assets and liabilities, and liabilities for unrecognized tax benefits reflect management’s best estimate of current and future taxes to be paid. The Company is subject to federal and state income taxes in the United States. Significant judgments and estimates are required in the determination of the consolidated income tax expense.
Deferred income taxes arise from temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, which will result in taxable or deductible amounts in the future. In evaluating the Company's ability to recover its deferred tax assets in the jurisdictions from which they arise, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. The assumptions about future taxable income require the use of significant judgment and are consistent with the plans and estimates used to manage the underlying business.
Liquidity
Liquidity is the ongoing ability to accommodate liability maturities and deposit withdrawals, fund asset growth and business operations, and meet contractual obligations through unconstrained access to funding at reasonable market rates. Liquidity management involves forecasting funding requirements and maintaining sufficient capacity to meet the needs and accommodate fluctuations in asset and liability levels due to changes in the Company's business operations or unanticipated events.

The ability to have readily available funds sufficient to repay fully maturing liabilities is of primary importance to depositors, creditors, and regulators. The Company's liquidity, represented by cash and amounts due from banks, federal funds sold, and non-pledged marketable securities, is a result of the Company's operating, investing, and financing activities and related cash flows. In order to ensure that funds are available when necessary, on at least a quarterly basis, the Company projects the amount of funds that will be required over a twelve month12-month period and it also strives to maintain relationships with a diversified customer base. Liquidity requirements can also be met through short-term borrowings or the disposition of short-term assets.

The following table presents the available and outstanding balances ofon the Company's lines of credit:
  December 31, 2017
  Available
Balance
 Outstanding Balance
  (in millions)
Unsecured fed funds credit lines at correspondent banks $100.0
 $
Other lines with correspondent banks:    
Secured other lines with correspondent banks 22.5
 
Unsecured other lines with correspondent banks 45.0
 
Total other lines with correspondent banks $167.5
 $
  December 31, 2019
  Available
Balance
 Outstanding Balance
  (in millions)
Unsecured fed funds credit lines at correspondent banks $1,215.0
 $
In addition to lines of credit, the Company has borrowing capacity with the FHLB and FRB from pledged loans and securities. The borrowing capacity, outstanding borrowings, and available credit as of December 31, 20172019 are presented in the following table:
 December 31, 2017 December 31, 2019
 (in millions) (in millions)
FHLB:    
Borrowing capacity $2,644.5
 $4,483.4
Outstanding borrowings 390.0
 
Letters of credit 343.0
 21.0
Total available credit $1,911.5
 $4,462.4
    
FRB:    
Borrowing capacity $1,110.6
 $1,149.4
Outstanding borrowings 
 
Total available credit $1,110.6
 $1,149.4
The Company has a formal liquidity policy and, in the opinion of management, its liquid assets are considered adequate to meet cash flow needs for loan funding and deposit cash withdrawals for the next 90-120 days. At December 31, 2017,2019, there is $2.89$2.9 billion in liquid assets, comprised of $416.8$434.6 million in cash and cash equivalents and money market investments and $2.48$2.5 billion in unpledged marketable securities. At December 31, 2016,2018, the Company maintained $2.00$3.0 billion in liquid assets, comprised of $284.5$498.6 million of cash, cash equivalents, and money market investments, and $1.72$2.5 billion ofin unpledged marketable securities.
The Parent maintains liquidity that would be sufficient to fund its operations and certain non-bank affiliate operations for an extended period should funding from normal sources be disrupted. Since deposits are taken by WAB and not by the Parent, Parent liquidity is not dependent on the Bank's deposit balances. In the Company's analysis of Parent liquidity, it is assumed that the Parent is unable to generate funds from additional debt or equity issuances, receives no dividend income from subsidiaries and does not pay dividends to stockholders, while continuing to make nondiscretionary payments needed to maintain operations and repayment of contractual principal and interest payments owed by the Parent and affiliated companies. Under this scenario, the amount of time the Parent and its non-bank subsidiaries can operate and meet all obligations before the current liquid assets are exhausted is considered as part of the Parent liquidity analysis. Management believes the Parent maintains adequate liquidity capacity to operate without additional funding from new sources for over twelve12 months.
WAB maintains sufficient funding capacity to address large increases in funding requirements, such as deposit outflows. This capacity is comprised of liquidity derived from a reduction in asset levels and various secured funding sources. On a long-term basis, the Company’s liquidity will be met by changing the relative distribution of its asset portfolios (for example, by reducing investment or loan volumes, or selling or encumbering assets). Further, the Company can increase liquidity by soliciting higher levels of deposit accounts through promotional activities and/or borrowing from correspondent banks, the FHLB of San Francisco and the FRB. At December 31, 2017,2019, the Company's long-term liquidity needs primarily relate to funds required to support loan originations, commitments, and deposit withdrawals, which can be met by cash flows from investment payments and maturities, and investment sales, if necessary.

The Company’s liquidity is comprised of three primary classifications: 1) cash flows provided by operating activities; 2) cash flows used in investing activities; and 3) cash flows provided by financing activities. Net cash provided by or used in operating

activities consists primarily of net income, adjusted for changes in certain other asset and liability accounts and certain non-cash income and expense items, such as the provision for credit losses, investment and other amortization and depreciation. For the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, net cash provided by operating activities was $383.8$717.8 million, $280.6$541.0 million, and $220.4$383.8 million, respectively.
The Company's primary investing activities are the origination of real estate and commercial loans, the collection of repayments of these loans, and the purchase and sale of securities. The Company's net cash provided by and used in investing activities has been primarily influenced by its loan and securities activities. The net increase in loans for the years ended December 31, 2019, 2018, and 2017, 2016,was $3.4 billion, $2.6 billion, and 2015, was $1.87 billion, $810.5 million, and $1.27$1.9 billion, respectively. There was aThe net increase in investment securities for the yearyears ended December 31, 2019, 2018, and 2017 of $1.05was $109.5 million, $12.4 million, and $1.1 billion, compared to a net increase of $771.9 million for the year ended December 31, 2016, and net decrease of $420.2 million for the year ended December 31, 2015.respectively.
Net cash provided by financing activities has been impacted significantly by increased deposit levels. During the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, net deposits increased $2.42$3.6 billion, $2.52$2.2 billion, and $1.36$2.4 billion, respectively.
Fluctuations in core deposit levels may increase the Company's need for liquidity as certificates of deposit mature or are withdrawn before maturity, and as non-maturity deposits, such as checking and savings account balances, are withdrawn. Additionally, the Company is exposed to the risk that customers with large deposit balances will withdraw all or a portion of such deposits, due in part to the FDIC limitations on the amount of insurance coverage provided to depositors. To mitigate the uninsured deposit risk, the Company participates in the CDARS and ICS programs, which allow an individual customer to invest up to $50.0 million and $110.0$120.0 million, respectively, through one participating financial institution, or a combined total of $150.0$185.0 million per individual customer, with the entire amount being covered by FDIC insurance. As of December 31, 2017,2019, the Company has $401.4$407.7 million of CDARS and $617.9$661.8 million of ICS deposits.
As of December 31, 2017,2019, the Company has $67.3 million$1.1 billion of wholesale brokered deposits outstanding. Brokered deposits are generally considered to be deposits that have been received from a third party who is engaged in the business of placing deposits on behalf of others. A traditional deposit broker will direct deposits to the banking institution offering the highest interest rate available. Federal banking laws and regulations place restrictions on depository institutions regarding brokered deposits because of the general concern that these deposits are not relationship based and are at a greater risk of being withdrawn and placed on deposit at another institution offering a higher interest rate, thus posing liquidity risk for institutions that gather brokered deposits in significant amounts.
Federal and state banking regulations place certain restrictions on dividends paid. The total amount of dividends whichthat may be paid at any date is generally limited to the retained earnings of the bank. Dividends paid by WAB to the Parent would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements. During the year ended December 31, 2017, the Parent contributed $11.3 million to WAB and2019, WAB and LVSP paid dividends to the Parent of $70.0$130.0 million and $27.3$4.0 million, respectively. Subsequent to December 31, 2017,2019, WAB paid dividends to the Parent of $10.0$35.0 million.
Recent accounting pronouncements
See "Note 1. Summary of Significant Accounting Policies," of the Notes to Consolidated Financial Statements contained in Item 8. Financial Statements and Supplementary Data for information on recent and recently adopted accounting pronouncements and their expected impact, if any, on the Company's consolidated financial statements.Consolidated Financial Statements.

SUPERVISION AND REGULATION
WAL, WAB, and certain of its non-banking subsidiaries are subject to comprehensive regulation under federal and state laws. The regulatory framework applicable to bank holding companies and their subsidiary banks is intended to protect depositors, the DIF, and the U.S. banking system as a whole. This system is not designed to protect equity investors in bank holding companies such as WAL.
Set forth below is a summary of the significant laws and regulations applicable to WAL and its subsidiaries. The description that follows is qualified in its entirety by reference to the full text of the statutes, regulations, and policies that are described. Such statutes, regulations, and policies are subject to ongoing review by Congress and state legislatures and federal and state regulatory agencies. A change in any of the statutes, regulations, or regulatory policies applicable to WAL and its subsidiaries could have a material effect on the results of the Company.
Overview
WAL is a separate and distinct legal entity from WAB and its other subsidiaries. As a registered bank holding company, WAL is subject to inspection, examination, and supervision by the FRB, and is regulated under the BHCA. WAL is also under the jurisdiction of the SEC and is subject to the disclosure and other regulatory requirements of the Securities Act of 1933, as amended, and the Exchange Act, as administered by the SEC. The Company’s common stock is listed on the NYSE under the trading symbol “WAL” and the Company is subject to the rules of the NYSE for listed companies. The Company is a financial institution holding company within the meaning of Arizona law. WAL provides a full spectrum of deposit, lending, treasury management, and online banking products and services through WAB, its wholly-owned banking subsidiary. WAB is an Arizona chartered bank and a member of the Federal Reserve System. WAB operates the following full-service banking divisions: ABA, , BON, Bridge, FIB, and TPB. WAB is subject to the supervision of, and to regular examination by, the Arizona Department of Financial Institutions, the FRB as its primary federal regulator, as well as byand the FDIC as its deposit insurer. WAB's deposits are insured by the FDIC up to the applicable deposit insurance limits in accordance with FDIC laws and regulations. The Company also serves business customers through a national platform of specialized financial services providers including AAB, Corporate Finance, Equity Fund Resources, HFF, Life Sciences Group, Mortgage Warehouse Lending, Public and Nonprofit Finance, Renewable Resource Group, Resort Finance, and Technology Finance.providers.
WAL and WAB are also supervised by the CFPB for compliance with federal consumer financial protection laws. The Company’s non-bank subsidiaries are subject to federal and state laws and regulations, including regulations of the FRB.
The Dodd-Frank Act significantly changed the financial regulatory regime in the United States. Since the enactment of the Dodd-Frank Act, U.S. banks and financial services firms have been subject to enhanced regulation and oversight. Several provisions of the Dodd-Frank Act are subject to further rulemaking, guidance, and interpretation by the federal banking agencies. While the current administration and its appointees to the federal banking agencies have expressed interest in reviewing, revising, and perhaps repealing portions of the Dodd-Frank Act and certain of its implementing regulations, is not clear whether any such legislation or regulatory changes will be enacted or, if enacted, what the effect on the Company would be. 
EGRRCPA
On May 24, 2018, the President signed into law the EGRRCPA which, among other things, amended certain provisions of the Dodd-Frank Act. The EGRRCPA provides limited regulatory relief to certain financial institutions while preserving the existing framework under which U.S. financial institutions are regulated. The EGRRCPA relieves bank holding companies with less than $100 billion in assets, such as the Company, from the enhanced prudential standards imposed under Section 165 of the Dodd-Frank Act (including, but not limited to, resolution planning and enhanced liquidity and risk management requirements). In addition to amending the Dodd-Frank Act, the EGRRCPA also includes certain additional banking-related provisions, consumer protection provisions and securities law-related provisions. While many of the EGRRCPA’s changes have been implemented through rules adopted by federal agencies, the Company expects to continue to evaluate the potential impact of the EGRRCPA as it is further implemented.
Bank Holding Company Regulation
WAL is a bank holding company as defined under the BHCA. The BHCA generally limits the business of bank holding companies to banking, managing or controlling banks, and other activities that the FRB has determined to be so closely related to banking as to be a proper incident thereto. Business activities that have been determined to be related to banking, and therefore appropriate for bank holding companies and their affiliates to engage in, include securities brokerage services, investment advisory services, fiduciary services, and certain management advisory and data processing services, among others. Bank holding companies that have elected to become financial holding companies may engage in any activity, or acquire and retain the shares of a company engaged in any activity that is eithereither: (i) financial in nature or incidental to such financial activity (as determined by the FRB in consultation with the Secretary of the Treasury) or (ii) complementary to a financial activity, and that does not pose a substantial risk to the safety and soundness of depository institutions or the financial system generally (as solely determined by the FRB).

Activities that are financial in nature include securities underwriting and dealing, insurance underwriting, and making merchant banking investments.

Mergers and Acquisitions
The BHCA, the Bank Merger Act, and other federal and state statutes regulate the direct and indirect acquisition of depository institutions. The BHCA requires the prior FRB approval for a bank holding company to acquire, directly or indirectly, 5% or more of any class of voting securities of a commercial bank or its parent holding company and for a company, other than a bank holding company, to acquire 25% or more of any class of voting securities of a bank or bank holding company. Under the Change in Bank Control Act, any person, including a company, may not acquire, directly or indirectly, control of a bank without providing 60 days’ prior notice and receiving a non-objection from the appropriate federal banking agency.
Under the Bank Merger Act, the prior approval of the appropriate federal banking agency is required for insured depository institutions to merge or enter into purchase and assumption transactions. In reviewing applications seeking approval of merger and purchase and assumption transactions, the federal banking agencies will consider, among other things, the competitive effect and public benefits of the transactions, the capital position of the combined banking organization, the applicant's performance record under the CRA, and the effectiveness of the subject organizations in combating money laundering activities. For further information relating to the CRA, see the Sectionsection titled “Community Reinvestment Act and Fair Lending Laws.”
Under Section 6-142 of the Arizona Revised Statutes, no person may acquire control of a company that controls an Arizona bank without the prior approval of the Arizona Superintendent of Financial Institutions, or Arizona Superintendent. A person who has the power to vote 15% or more of the voting stock of a controlling company is presumed to control the company.
Enhanced Prudential Standards
Section 165 of the Dodd-Frank Act imposes enhanced prudential standards on larger banking organizations, with certain of these standards applicable to banking organizations over $10 billion, including WAL and WAB, as of the quarter ending June 30, 2014. In October 2012, the FDIC, the OCC, and the FRB issued separate but similar rules requiring covered banks and bank holding companies with $10 billion to $50 billion in total consolidated assets to conduct an annual company-run stress test. WAL and WAB conducted a company-run capital stress test as required by the Dodd-Frank Act in 2017 and provided the results to the FRB. WAL found the Company would have sufficient capital to maintain regulatory capital levels throughout an economic downturn.
As a result of passage of the EGRRCPA, bank holding companies with less than $100 billion in assets, such as the Company, are exempt from the enhanced prudential standards imposed under Section 165 of the Dodd-Frank Act (including, but not limited to, the resolution planning and enhanced liquidity and risk management requirements therein). Notwithstanding these changes, the capital planning and risk management practices of the Company and the Bank will continue to be reviewed through the regular supervisory processes of the FRB.
In February 2014, the FRB issued a rule further implementing the enhanced prudential standards required by the Dodd-Frank Act. Although most of the standards apply only to bank holding companies with more than $50 billion in assets, as directed by the Dodd-Frank Act, the rule contains certain standards that apply to bank holding companies with more than $10 billion in assets, including a requirement to establish a risk committee of the Company's BOD to manage enterprise-wide risk. The Company meets these requirements. The EGRRCPA increased the asset threshold for requiring a bank holding company to establish a separate risk committee of independent directors from $10 billion to $50 billion. Notwithstanding this change, the Company has retained its separate risk committee of independent directors.
Volcker Rule
Section 619 of the Dodd-Frank Act, commonly known as the Volcker Rule, restricts the ability of banking entities, such as the Company and WAB, from: (i) engaging in “proprietary trading” and (ii) investing in or sponsoring certain covered funds, subject to certain limited exceptions. Under the Volcker Rule, the term "covered funds" is defined as any issuer that would be an investment company under the Investment Company Act but for the exemption in Section 3(c)(1) or 3(c)(7) of that Act, which includes CLO and CDO securities. There are also several exemptions from the definition of covered fund, including, among other things, loan securitizations, joint ventures, certain types of foreign funds, entities issuing asset-backed commercial paper, and registered investment companies. Further, the final rules permit banking entities, subject to certain conditions and limitations, to invest in or sponsor a covered fund in connection with 1)with: (1) organizing and offering the covered fund; 2)(2) certain risk-mitigating hedging activities; and 3) (3) de minimis investments in covered funds. The EGRRCPA and subsequent promulgation of inter-agency final rules have aimed at simplifying and tailoring requirements related to the Volcker Rule, including by eliminating collection of certain metrics and reducing the compliance burdens associated with other metrics for banks with less than $20 billion in average trading assets and liabilities. Compliance with the Volcker Rule was required by July 21, 2017 and the Company believes it is fully compliant.

Dividends
TheHistorically, the Company has nevernot declared or paid cash dividends on its common stock. The Company currently intendsstock, electing instead to retain any future earnings for future growthgrowth. On July 30, 2019, WAL's BOD authorized the payment of regular quarterly dividends, declaring the Company's first quarterly cash dividend of $0.25 per share of common stock, which was paid on August 30, 2019. Whether the Company continues to pay quarterly dividends and does not anticipate payingthe amount of any cash dividends in the foreseeable future. Any determination in the future to paysuch dividends will be at the discretion of WAL's BOD and will depend on the Company’s earnings, financial condition, results of operations, business prospects, capital requirements, regulatory restrictions, contractual restrictions, and other factors that the BOD may deem relevant.
The Company’s ability to pay dividends is subject to the regulatory authority of the FRB. The supervisory concern of the FRB focuses on a bank holding company’s capital position, its ability to meet its financial obligations as they come due, and its capacity to act as a source of financial strength to its insured depository institution subsidiaries. In addition, FRB policy discourages the payment of dividends by a bank holding company that is not supported by current operating earnings.

As a Delaware corporation, the Company is also subject to limitations under Delaware law on the payment of dividends. Under the Delaware General Corporation Law, dividends may only be paid out of surplus or out of net profits for the year in which the dividend is declared or the preceding year, and no dividends may be paid on common stock at any time during which the capital of outstanding preferred stock or preference stock exceeds the Company's net assets.
From time to time, the Company may become a party to financing agreements and other contractual obligations that have the effect of limiting or prohibiting the declaration or payment of dividends such as the Series B Preferred Stock it issued pursuant to the SBLF (which has subsequently been redeemed).under certain circumstances. Holding company expenses and obligations with respect to its outstanding trust preferred securities and corresponding subordinated debt also may limit or impair the Company’s ability to declare and pay dividends.
Since the Company has no significant assets other than the voting stock of its subsidiaries, it currently depends on dividends from WAB and, to a lesser extent, its non-bank subsidiaries, for a substantial portion of its revenue and as the primary sources of its cash flow. The ability of a state member bank, such as WAB, to pay cash dividends is restricted by the FRB and the stateState of Arizona. The FRB’s Regulation H states that a member bank may not declare or pay a dividend if the total of all dividends declared during that calendar year exceed the bank’s net income during that calendar year and the retained net income of the prior two years. Further, without receiving prior approval from both the FRB and two thirdstwo-thirds of its shareholders, a bank cannot declare or pay a dividend that would exceed its undivided profits or withdraw any portion of its permanent capital.
Under Section 6-187 of the Arizona Revised Statutes, WAB may pay dividends on the same basis as any other Arizona corporation, except that cash dividends paid out of capital surplus require the prior approval of the Arizona Superintendent. Under Section 10-640 of the Arizona Revised Statutes, a corporation may not make a distribution to stockholders if to do so would render the corporation insolvent or unable to pay its debts as they become due. However, an Arizona bank may not declare a non-stock dividend out of capital surplus without the approval of the Arizona Superintendent.
Federal Reserve System
As a member of the Federal Reserve System, WAB is required by law to maintain reserves against its transaction deposits. The reserves must be held in cash or with the FRB. Banks are permitted to meet this requirement by maintaining the specified amount as an average balance over a two-week period. The total of reserve balances was approximately $105.5$164.1 million and $43.7$145.9 million as of December 31, 20172019 and 2016,2018, respectively.
Source of Strength Doctrine
FRB policy requires bank holding companies to act as a source of financial and managerial strength to their subsidiary banks. Section 616 of the Dodd-Frank Act codified the requirement that bank holding companies act as a source of financial strength. As a result, the Company is expected to commit resources to support WAB, including at times when the Company may not be in a financial position to provide such resources. Any capital loans by a bank holding company to any of its subsidiary banks are subordinate in right of payment to deposits and to certain other indebtedness of such subsidiary banks. The U.S. Bankruptcy Code provides that, in the event of a bank holding company's bankruptcy, any commitment by the bank holding company to a federal banking agency to maintain the capital of a subsidiary bank will be assumed by the bankruptcy trustee and entitled to priority of payment.

Capital Adequacy and Prompt Corrective Action
The Capital Rules established a comprehensive capital framework for U.S. banking organizations. The Capital Rules generally implement the Basel Committee's Basel III final capital framework for strengthening international capital standards. The Capital Rules revise the definitions and the components of regulatory capital, as well as address other issues affecting the numerator in banking institutions’ regulatory capital ratios. The Capital Rules also address asset risk weights and other matters affecting the denominator in banking institutions’ regulatory capital ratios and replacereplaced the existing general risk-weighting approach with a more risk-sensitive approach.
The Capital Rules: (i) include CET1 and the related regulatory capital ratio of CET1 to risk-weighted assets; (ii) specify that Tier 1 capital consists of CET1 and “Additional Tier 1 capital” instruments meeting certain revised requirements; (iii) mandate that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital; and (iv) expand the scope of the deductions from and adjustments to capital as compared to existing regulations. Under the Capital Rules, for most banking organizations, including the Company, the most common form of Additional Tier 1 capital is non-cumulative perpetual preferred stock, and the most common forms of Tier 2 capital are subordinated notes and a portion of the allocation for loan and lease losses, in each case, subject to the Capital Rules’ specific requirements.

Pursuant to the Capital Rules, the minimum capital ratios are as follows:
4.5% CET1 to risk-weighted assets;
6.0% Tier 1 capital (that is, CET1 plus Additional Tier 1 capital) to risk-weighted assets;
8.0% Total capital (that is, Tier 1 capital plus Tier 2 capital) to risk-weighted assets; and
4.0% Tier 1 capital to average consolidated assets as reported on consolidated financial statements (called “leverage ratio”).
The Capital Rules also include a “capital conservation buffer,” composed entirely of CET1, in addition to these minimum risk-weighted asset ratios. The capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of CET1 to risk-weighted assets above the minimum but below the capital conservation buffer will face constraints on dividends, equity, and other capital instrument repurchases and compensation based on the amount of the shortfall. Thus, whenThe Capital Rules became fully phased-in on January 1, 2019,2019. Thus, the capital standards applicable to the Company will include an additional capital conservation buffer of 2.5% of CET1, effectively resulting in minimum ratios inclusive of the capital conservation buffer of (i) CET1 to risk-weighted assets of at least 7%, (ii) Tier 1 capital to risk-weighted assets of at least 8.5%, and (iii) Total capital to risk-weighted assets of at least 10.5%.
The Capital Rules provide for a number of deductions from and adjustments to CET1. These include, for example, the requirement that mortgage servicing assets, deferred tax assets arising from temporary differences that could not be realized through net operating loss carrybacks, and significant investments in non-consolidated financial entities be deducted from CET1 to the extent that any one such category exceeds 10% of CET1 or all such items, in the aggregate, exceed 15% of CET1. The deductions and adjustments will be incrementally phased in between January 1, 2015 and January 1, 2019.
In addition, under the current general risk-based capital rules,Capital Rules further prescribe that the effects of accumulated other comprehensive income or loss items reported as a component of stockholders’ equity be included in shareholders’ equity (for example, mark-to-market of securities held in the available-for-sale portfolio) under U.S. generally accepted accounting principles are reversed for the purposes of determining regulatory capital ratios. Pursuant to the Capital Rules, the effects of certain of these items are not excluded;CET1 capital; however, non-advanced approaches banking organizations may make a one-time permanent election to continue to exclude these items. The Company, as a non-advanced approaches institution, has made this one-time election to exclude these items from its regulatory capital ratios.election.
The Capital Rules also preclude certain hybrid securities, such as trust preferred securities, issued on or after May 19, 2010 from inclusion in bank holding companies’ Tier 1 capital. The Company has used trust preferred securities in the past as a tool for raising additional Tier 1 capital and otherwise improving its regulatory capital ratios. Although the Company may continue to include its existing trust preferred securities as Tier 1 capital, the prohibition on the use of these securities as Tier 1 capital going forward may limit the Company’s ability to raise capital in the future.
Implementation of the deductions and other adjustments to CET1 began on January 1, 2015 and will be phased in over a 4-year period (beginning at 40% on January 1, 2015 and an additional 20% per year thereafter). The implementation of the capital conservation buffer began on January 1, 2016 at the 0.625% level and increases by 0.625% on each subsequent January 1, until it reaches 2.5% on January 1, 2019. The risk-weighting categories in the Capital Rules are standardized and include a risk-sensitive number of categories, depending on the nature of the assets, generally ranging from 0% for U.S. government and agency securities, to 600% for certain equity exposures, and resulting in higher risk weights for a variety of asset classes.
In September 2017, the federal banking agencies proposed simplifying the Capital Rules. The proposal would apply primarilyOn July 9, 2019, the federal banking agencies adopted a final rule (replacing a substantially similar interim rule) to simplify several requirements of the regulatory capital rules for non-advanced approaches institutions, such as the Company. The proposal would simplify and clarify a number offinal rule simplifies the more complex aspects of the Capital Rules, including thecapital treatment for certain acquisition, development, and construction loans, mortgage servicing assets, certain deferred tax assets, investments in the capital instruments of unconsolidated financial institutions, and minority interests. In November 2017,interest. The final rule will be effective as of April 1, 2020 for the FRB finalized a rule extending the currently applicable capital rules for non-advanced approaches institutions, including the treatment of mortgage servicing assets. That rule is in effect pending the comment period and review of the general proposalamendments to simplify the Capital Rules for non-advanced approaches institutions.capital rules.
Management believes the Company is in compliance, and will continue to be in compliance, with the targeted capital ratios as such requirements are phased in.ratios.

Prompt Corrective Action and Safety and Soundness
Pursuant to Section 38 of the FDIA, federal banking agencies are required to take “prompt corrective action” should a depository institution fail to meet certain capital adequacy standards. At each successive lower capital category, an insured depository institution is subject to more restrictions and prohibitions, including restrictions on growth, restrictions on interest rates paid on deposits, restrictions or prohibitions on payment of dividends and restrictions on the acceptance of brokered deposits. Furthermore, if an insured depository institution is classified in one of the undercapitalized categories, it is required to submit a capital restoration plan to the appropriate federal banking agency, and the holding company must guarantee the performance of that plan. Based upon its capital levels, a bank that is classified as well-capitalized, adequately capitalized, or undercapitalized may be treated as though it were in the next lower capital category if the appropriate federal banking agency, after notice and opportunity for hearing, determines that an unsafe or unsound condition, or an unsafe or unsound practice, warrants such treatment.
For purposes of prompt corrective action, to be: (i) well-capitalized, a bank must have a total risk based capital ratio of at least 10%, a Tier 1 risk based capital ratio of at least 8%, a CET1 risk based capital ratio of at least 6.5%, and a Tier 1 leverage ratio of at least 5%; (ii) adequately capitalized, a bank must have a total risk based capital ratio of at least 8%, a Tier 1 risk based capital ratio of at least 6%, a CET1 risk based capital ratio of at least 4.5%, and a Tier 1 leverage ratio of at least 4%; (iii) undercapitalized, a bank would have a total risk based capital ratio of less than 8%, a Tier 1 risk based capital ratio of less than 6%, a CET1 risk based capital ratio of less than 4.5%, and a Tier 1 leverage ratio of less than 4%; (iv) significantly undercapitalized, a bank would have a total risk based capital ratio of less than 6%, a Tier 1 risk based capital ratio of less than 4%, a CET1 risk based capital ratio of less than 3%, and a Tier 1 leverage ratio of less than 3%; (v) critically undercapitalized, a bank would have a ratio of tangible equity to total assets that is less than or equal to 2%.
Bank holding companies and insured banks also may be subject to potential enforcement actions of varying levels of severity by the federal banking agencies for unsafe or unsound practices in conducting their business, or for violation of any law, rule, regulation, condition imposed in writing by the agency or term of a written agreement with the agency. In more serious cases, enforcement actions may includeinclude: (i) the issuance of directives to increase capital; (ii) the issuance of formal and informal agreements; (iii) the imposition of civil monetary penalties; (iv) the issuance of a cease and desist order that can be judicially enforced; (v) the issuance of removal and prohibition orders against officers, directors, and other institution−affiliatedinstitution-affiliated parties; (vi) the termination of the bank’s deposit insurance; (vii) the appointment of a conservator or receiver for the bank; and (viii) the enforcement of such actions through injunctions or restraining orders based upon a judicial determination that the agency would be harmed if such equitable relief was not granted.
Transactions with Affiliates and Insiders
Under federal law, transactions between insured depository institutions and their affiliates are governed by Sections 23A and 23B of the FRA and implementing Regulation W. In a bank holding company context, at a minimum, the parent holding company of a bank, and any companies which are controlled by such parent holding company, are affiliates of the bank. Generally, Sections 23A and 23B of the FRA are intended to protect insured depository institutions from losses arising from transactions with non-insured affiliates by limiting the extent to which a bank or its subsidiaries may engage in covered transactions with any one affiliate and with all affiliates of the bank in the aggregate, and requiring that such transactions be on terms consistent with safe and sound banking practices.
Further, Section 22(h) of the FRA and its implementing Regulation O restricts loans to directors, executive officers, and principal stockholders (“insiders”). Under Section 22(h), loans to insiders and their related interests may not exceed, together with all other outstanding loans to such persons and affiliated entities, the institution's total capital and surplus. Loans to insiders above specified amounts must receive the prior approval of the BOD. Further, under Section 22(h) of the FRA, loans to directors, executive officers, and principal stockholders must be made on terms substantially the same as offered in comparable transactions to other persons, except that such insiders may receive preferential loans made under a benefit or compensation program that is widely available to the bank's employees and does not give preference to the insider over the employees. Section 22(g) of the FRA places additional limitations on loans to executive officers.
Lending Limits
In addition to the requirements set forth above, state banking law generally limits the amount of funds that a state-chartered bank may lend to a single borrower. Under Section 6-352 of the Arizona Revised Statutes, the obligations of one borrower to a bank may not exceed 20% of the bank’s capital, plus an additional 10% of its capital if the additional amounts are fully secured by readily marketable collateral.

Brokered Deposits
Section 29 of the FDIA and FDIC regulations generally limit the ability of any bank to accept, renew or roll over any brokered deposit unless it is “well capitalized” or, with the FDIC’s approval, “adequately capitalized.” However, as a result of the EGRRCPA, the FDIC has undertaken a comprehensive review of its regulatory approach to brokered deposits, including reciprocal deposits, and interest rate caps applicable to banks that are less than “well capitalized.” On December 12, 2019, the FDIC issued a notice of proposed rulemaking to modernize its brokered deposit regulations. At this time, it is difficult to predict what changes, if any, to the brokered deposit regulations will actually be implemented or the effect of such changes on the Bank.
Consumer Protection and CFPB Supervision
The Dodd-Frank Act centralized responsibility for consumer financial protection by creating the CFPB, an independent agency charged with responsibility for implementing, enforcing, and examining compliance with federal consumer financial protection laws. The Company is subject to a number of federal and state laws designed to protect borrowers and promote lending to various sectors of the economy and population. These laws include the Equal Credit Opportunity Act, the Fair Credit Reporting Act, the Fair Debt Collection Procedures Act, the Truth in Lending Act, the Home Mortgage Disclosure Act, the Real Estate Settlement Practices Act, various state law counterparts, and the Consumer Financial Protection Act of 2010, which is part of the Dodd-Frank Act. The Dodd-Frank Act does not prevent states from adopting stricter consumer protection standards. State regulation of financial products and potential enforcement actions could also adversely affect the Company’s business, financial condition, or operations.
Depositor Preference
The FDIA provides that, in the event of the “liquidation or other resolution” of an insured depository institution, the claims of depositors of the institution, including the claims of the FDIC as subrogee of insured depositors, and certain claims for administrative expenses of the FDIC as a receiver, will have priority over other general unsecured claims against the institution. If an insured depository institution fails, insured and uninsured depositors, along with the FDIC, will have priority in payment ahead of unsecured, non-deposit creditors, including the parent bank holding company, with respect to any extensions of credit they have made to such insured depository institution.
Federal Deposit Insurance
Substantially all of the deposits of WAB are insured up to applicable limits by the FDIC’s DIF andDIF. The basic limit on FDIC deposit insurance is $250,000 per depositor. WAB is subject to deposit insurance assessments to maintain the DIF.
The FDIC uses a risk-based assessment system that imposes insurance premiums based upon a risk matrix that takes into account a bank's CAMELS rating. The risk matrix utilizes different risk categories distinguished by capital levels and supervisory ratings. As a result of the Dodd-Frank Act, the base for insurance assessments is now consolidated average assets less average tangible equity. Assessment rates are calculated using formulas that take into account the risk of the institution being assessed. WAB is classified as, and subject to the scorecard for, a large and highly complex institution to determine its total base assessment rate.
The Dodd-Frank Act requires that the FDIC raise the minimum reserve ratio of the DIF from 1.15% to 1.35%, and that the FDIC offset the effect of this increase on insured depository institutions with total consolidated assets of less than $10 billion. In March 2016, the FDIC finalized a rule to impose a surcharge of 4.5 cents per $100 of their assessment base on deposit insurance assessment rates paid by insured depository institutions with total consolidated assets of more than $10 billion. As of June 30, 2016, the minimum reserve ratio reached 1.17% and as such, WAB was subject to the surcharge beginning July 1, 2016. At September 30, 2018, the reserve ratio reached 1.36%, exceeding the statutorily required minimum. As a result, WAB was no longer subject to the surcharge as of September 30, 2018. The FDIC also has authority to further increase deposit insurance assessments. FDIC deposit insurance expense also includes FICO assessments related to outstanding FICO bonds. These assessments will continue until the FICO bonds mature, with such maturities beginning in 2017 and continuing through 2019.
Under the FDIA, the FDIC may terminate deposit insurance upon a finding that the institution has engaged in unsafe and unsound practices, is in an unsafe or unsound condition to continue operations, or has violated any applicable law, regulation, rule, order or condition imposed by the FDIC. The Company’s management is not aware of any practice, condition, or violation that might lead to the termination of its deposit insurance.

Financial Privacy and Data Security
The Company is subject to federal laws, including the GLBA, and certain state laws containing consumer privacy protection provisions. These provisions limit the ability of banks and other financial institutions to disclose non-public information about consumers to affiliated and non-affiliated third parties and limit the reuse of certain consumer information received from non-affiliated institutions. These provisionprovisions require notice of privacy policies to consumers and, in some circumstances, allow consumers to prevent disclosure of certain personal information to affiliates or non-affiliated third parties by means of “opt out” or “opt in” authorizations.
For example, in August 2018, the CFPB published its final rule to update Regulation P pursuant to the amended GLBA. Under this rule, certain qualifying financial institutions are not required to provide annual privacy notices to customers. To qualify, a financial institution must not share nonpublic personal information about customers except as described in certain statutory exceptions that do not trigger a customer’s statutory opt-out right. In addition, the financial institution must not have changed its disclosure policies and practices from those disclosed in its most recent privacy notice. The rule sets forth timing requirements for delivery of annual privacy notices in the event that a financial institution that qualified for the annual notice exemption later changes its policies or practices in such a way that it no longer qualifies for the exemption.
The GLBA also requires that financial institutions implement comprehensive written information security programs that include administrative, technical, and physical safeguards to protect consumer information. Further, pursuant to interpretive guidance issued under the GLBA and certain state laws, financial institutions are required to notify customers of security breaches that result in unauthorized access to their nonpublic personal information.
For example, under California law, every business that owns or licenses personal information about a California resident must maintain reasonable security procedures and policies to protect that information and comply with specific requirements relating to the destruction of records containing personal information and disclosure of breaches to customers, and restrictions on the use of customer information unless the customer "opts in." Other states, including Arizona and Nevada where WAB has branches,

may also have applicable laws requiring businesses that retain consumer personal information to develop reasonable security policies and procedures, notify consumers of a security breach, or provide disclosures about the use and sharing of consumer personal information.
The federal banking agencies, including the FRB, through the Federal Financial Institutions Examination Council, have adopted guidelines to encourage financial institutions to address cybersecurity risks and identify, assess, and mitigate these risks, both internally and at critical third partythird-party services providers. In October 2016, the federal bank regulatory agencies issued proposed rules on enhanced cybersecurity risk management and resilience standards that would apply to very large financial institutions and to services provided by third parties to these institutions. The comment period for these proposed rules has closed and a final rule has not been published. Although the proposed rules would apply only to bank holding companies and banks with $50 billion or more in total consolidated assets, these rules could influence the federal bank regulatory agencies’ expectations and supervisory requirements for information security standards and cybersecurity programs of financial institutions with less than $50 billion in total consolidated assets.
These laws and regulations impose compliance costs and create obligations and, in some cases, reporting obligations, and compliance with these laws, regulations, and obligations require significant resources of WAL and WAB.
Community Reinvestment Act and Fair Lending Laws
WAB has a responsibility under the CRA to help meet the credit needs of its communities, including low and moderate-incomemoderate income neighborhoods. The CRA does not establish specific lending requirements or programs for financial institutions nor does it limit an institution's discretion to develop the types of products and services that it believes are best suited to its particular community, consistent with the CRA. In addition, the Equal Credit Opportunity Act and the Fair Housing Act prohibit discrimination in lending practices on the basis of characteristics specified in those statutes. WAB’s failure to comply with the provisions of the CRA could, at a minimum, result in regulatory restrictions on its activities and the activities of the Company. WAB’s failure to comply with the Equal Credit Opportunity Act and the Fair Housing Act could result in enforcement actions. WAB received a rating of “Satisfactory” in its most recent CRA examination, in November 2015.January 2019.
On December 17, 2019, the OCC and the FDIC issued a joint notice of proposed rulemaking to modernize the regulations implementing the CRA. While the proposed rule will not apply to WAB because its primary federal regulator is the FRB, it may impact the overall environment as it relates to CRA compliance and portend future changes by the FRB. Under the rulemaking, the federal banking agencies intend to: (i) clarify which activities qualify for CRA credit; (ii) update where activities count for CRA credit; (iii) create a more transparent and objective method for measuring CRA performance; and (iv) provide for more transparent, consistent, and timely CRA-related data collection, record keeping, and reporting. WAL and WAB expect to monitor

developments with respect to this rulemaking and assess the impact, if any, of changes to the CRA regulations proposed by the federal banking agencies.
Federal Home Loan Bank of San Francisco
WAB is a member of the FHLB of San Francisco, which is one of 12 regional FHLBs that provide funding to their members to support residential lending, as well as affordable housing and community development loans. Each FHLB serves as a reserve, or central bank, for the members within its assigned region. Each FHLB makes loans to its members in accordance with policies and procedures established by the board of directors of the FHLB. As a member, WAB must purchase and maintain stock in the FHLB of San Francisco. At December 31, 2019, WAB’s total investment in FHLB stock was $17.3 million.
Incentive Compensation
The Dodd-Frank Act requires the federal banking agencies and the SEC to establish joint regulations or guidelines prohibiting incentive-based payment arrangements at specified regulated entities, including the Company and WAB, with at least $1 billion in total consolidated assets, that encourage inappropriate risks by providing an executive officer, employee, director, or principal shareholder with excessive compensation, fees, or benefits that could lead to material financial loss to the entity. The federal banking agencies and the SEC most recently proposed such regulations in 2016, but the regulations have not yet been finalized. If the regulations are adopted in the form initially proposed, they will restrict the manner in which executive compensation is structured.
The Dodd-Frank Act also requires publicly traded companies to give stockholders a non-binding vote on executive compensation at least every three years and on so-called “golden parachute” payments in connection with approvals of mergers and acquisitions. WAL gives stockholders a non-binding vote on executive compensation annually.
Preventing Suspicious Activity
Under Title III of the USA PATRIOT Act, all financial institutions are required to take certain measures to identify their customers, prevent money laundering, monitor customer transactions, and report suspicious activity to U.S. law enforcement agencies. Financial institutions also are required to respond to requests for information from federal banking agencies and law enforcement agencies. Information sharing among financial institutions for the above purposes is encouraged by an exemption granted to complying financial institutions from the privacy provisions of the GLBA and other privacy laws. Financial institutions that hold correspondent accounts for foreign banks or provide private banking services to foreign individuals are required to take measures to avoid dealing with certain foreign individuals or entities, including foreign banks with profiles that raise money laundering concerns, and are prohibited from dealing with foreign “shell banks” and persons from jurisdictions of particular concern. The primary federal banking agencies and the Secretary of the Treasury have adopted regulations to implement several of these provisions. On May 11, 2018, WAB must comply with theThe new Customer Due Diligence Rule, whichthat was effective beginning May 11, 2018, clarified and strengthened the existing obligations for identifying new and existing customers and explicitly includeincluded risk-based procedures for conducting ongoing customer due diligence. All financial institutions also are required to establish internal anti-money laundering programs. The effectiveness of a financial institution in combating money laundering activities is a factor to be considered in any application submitted by the financial institution under the Bank Merger Act. The Company has a Bank Secrecy Act and USA PATRIOT Act Board-approved compliance program and engages in relatively few transactions with foreign financial institutions or foreign persons.
The FCRA’s Red Flags Rule requires financial institutions with covered accounts (e.g., consumer bank accounts and loans) to develop, implement, and administer an identity theft prevention program. This program must include reasonable policies and procedures to detect suspicious patterns or practices that indicate the possibility of identity theft, such as inconsistencies in personal information or changes in account activity.
Office of Foreign Assets Control Regulation
The United States has imposed economic sanctions that affect transactions with designated foreign countries, nationals, and others. These are typically known as the OFAC rules based on their administration by the OFAC. The OFAC-administered sanctions

targeting countries take many different forms. Generally, they contain one or more of the following elements: (i) restrictions on trade with or investment in a sanctioned country, including prohibitions against direct or indirect imports from and exports to a sanctioned country and prohibitions on “U.S. persons” engaging in financial transactions relating to making investments in, or providing investment-related advice or assistance to, a sanctioned country; and (ii) a blocking of assets in which the government or specially designated nationals of the sanctioned country have an interest, by prohibiting transfers of property subject to U.S. jurisdiction (including property in the possession or control of U.S. persons). Blocked assets (property and bank deposits) cannot be paid out, withdrawn, set off, or transferred in any manner without a license from OFAC. Failure to comply with these sanctions could have serious legal and reputational consequences.

Future Legislative Initiatives
Federal and state legislatures may introduce legislation that will impact the financial services industry. In addition, federal banking agencies may introduce regulatory initiatives that are likely to impact the financial services industry, generally. However it is not clear whether such changes will be enacted or, if enacted, what their effect on the Company will be. New legislation could change banking statutes and the operating environment of the Company in substantial and unpredictable ways. If enacted, such legislation could increase or decrease the cost of doing business, limit or expand permissible activities, or affect the competitive balance among banks, savings associations, credit unions, and other financial institutions. The Company cannot predict whether any such legislation will be enacted, and, if enacted, the effect that it or any implementing regulations would have on the financial condition or results of operations of the Company. A change in statutes, regulations, or regulatory policies applicable to WAL or any of its subsidiaries could have a material effect on the business of the Company.

Item 7A.Quantitative and Qualitative Disclosures about Market Risk.
Market risk is the risk of loss in a financial instrument arising from adverse changes in market prices, interest rates, foreign currency exchange rates, commodity prices, and equity prices. The Company's market risk arises primarily from interest rate risk inherent in its lending, investing, and deposit taking activities. To that end, management actively monitors and manages the Company's interest rate risk exposure. The Company generally manages its interest rate sensitivity by evaluating re-pricing opportunities on its earning assets to those on its funding liabilities.
Management uses various asset/liability strategies to manage the re-pricing characteristics of the Company's assets and liabilities, all of which are designed to ensure that exposure to interest rate fluctuations is limited to within the Company's guidelines of acceptable levels of risk-taking. Hedging strategies, including the terms and pricing of loans and deposits and management of the deployment of its securities, are used to reduce mismatches in interest rate re-pricing opportunities of portfolio assets and their funding sources.
Interest rate risk is addressed by the ALCO, which includes members of executive management, finance, and operations. ALCO monitors interest rate risk by analyzing the potential impact on the net EVE and net interest income from potential changes in interest rates and considers the impact of alternative strategies or changes in balance sheet structure. The Company manages its balance sheet in part to maintain the potential impact on EVE and net interest income within acceptable ranges despite changes in interest rates.
The Company's exposure to interest rate risk is reviewed at least quarterly by the ALCO. Interest rate risk exposure is measured using interest rate sensitivity analysis to determine its change in both EVE and net interest income in the event of hypothetical changes in interest rates. If potential changes to EVE and net interest income resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within Board-approved limits.
Net Interest Income Simulation. In order to measure interest rate risk at December 31, 2017,2019, the Company uses a simulation model to project changes in net interest income that result from forecasted changes in interest rates. This analysis calculates the difference between a baseline net interest income forecast using current yield curves that do not take into consideration any future anticipated rate hikes, compared to forecasted net income resulting from an immediate parallel shift in rates upward or downward, along with other scenarios directed by ALCO. The income simulation model includes various assumptions regarding the re-pricing relationships for each of the Company's products. Many of the Company's assets are floating rate loans, which are assumed to re-price immediately and, proportional to the change in market rates, depending on their contracted index, including the impact of caps or floors. Some loans and investments contain contractual prepayment features (embedded options) and, accordingly, the simulation model incorporates prepayment assumptions. The Company's non-term deposit products re-price more slowly, usually changing less thanconcurrently with interest rate changes taken by the change in market rates and at the Company's discretion.Federal Open Market Committee.
This analysis indicates the impact of changes in net interest income for the given set of rate changes and assumptions. It assumes the balance sheet remains static and that its structure does not change over the course of the year. It does not account

for all factors that could impact the Company's results, including changes by management to mitigate interest rate changes or secondary factors, such as changes to the Company's credit risk profile as interest rates change.
Furthermore, loan prepayment rate estimates and spread relationships change regularly. Interest rate changes create changes in actual loan prepayment speeds that will differ from the market estimates incorporated in this analysis. Changes that vary significantly from the modeled assumptions may have significant effects on the Company's actual net interest income.
This simulation model assesses the changes in net interest income that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates over a twelve-month period.rates. At December 31, 2017,2019, the Company's net interest income exposure for the next twelve12 months related to these hypothetical changes in market interest rates was within the Company's current guidelines for all up-rate scenarios. The Company’s net interest income exposure in the down-rate scenario was not within the Company’s guideline of (5.0)%. The breach is the result of an increase in short interest rates over the past two years, resulting from fed funds rate increases, and as floating-rate asset yields improved, the Company’s deposit costs have not increased materially; thus in a current down-rate scenario, the Company will not see the full impact of a rate decrease on its deposit costs while it will see that impact on floating-rate assets. The Board and management have accepted the breach and believe that as deposit costs increase over time, interest expense will be more sensitive in a down-rate scenario dampening the Company’s overall net interest income sensitivityguidelines.

Sensitivity of Net Interest Income
  Parallel Shift Rate Scenario
(change in basis points from Base)
  Down 100 Base Up 100 Up 200
  (in thousands)
Interest Income $1,198,091
 $1,302,915
 $1,437,503
 $1,576,092
Interest Expense 96,043
 157,552
 222,366
 287,172
Net Interest Income 1,102,048
 1,145,363
 1,215,137
 1,288,920
% Change (3.8)%   6.1% 12.5%
  Interest Rate Ramp Scenario
(change in basis points from Base)
  Down 100 Base Up 100 Up 200
  (in thousands)
Interest Income $1,253,569
 $1,302,915
 $1,359,077
 $1,421,736
Interest Expense 127,741
 157,552
 172,436
 186,619
Net Interest Income 1,125,828
 1,145,363
 1,186,641
 1,235,117
% Change (1.7)%   3.6% 7.8%
  Interest Rate Scenario (change in basis points from Base)
  Down 100 Base Up 100 Up 200 Up 300 Up 400 Short Rates Up 100
  (in thousands)
Interest Income $841,402
 $936,625
 $1,036,383
 $1,135,598
 $1,234,954
 $1,334,322
 $1,027,085
Interest Expense 41,418
 77,659
 121,782
 165,559
 209,224
 252,823
 121,191
Net Interest Income 799,984
 858,966
 914,601
 970,039
 1,025,730
 1,081,499
 905,894
% Change (6.9)%   6.5% 12.9% 19.4% 25.9% 5.5%
Economic Value of Equity. The Company measures the impact of market interest rate changes on the NPV of estimated cash flows from its assets, liabilities, and off-balance sheet items, defined as EVE, using a simulation model. This simulation model assesses the changes in the market value of interest rate sensitive financial instruments that would occur in response to an instantaneous and sustained increase or decrease (shock) in market interest rates.
At December 31, 2017,2019, the Company's EVE exposure related to these hypothetical changes in market interest rates was within the Company's current guidelines. The following table shows the Company's projected change in EVE for this set of rate shocks at December 31, 2017:2019:
Economic Value of Equity
 Interest Rate Scenario (change in basis points from Base) Interest Rate Scenario (change in basis points from Base)
 Down 100 Base Up 100 Up 200 Up 300 Up 400 Short Rates Up 100 Down 100 Base Up 100 Up 200 Up 300 Up 400
 (in thousands) (in thousands)
Assets $20,617,688
 $20,324,036
 $19,913,761
 $19,532,027
 $19,146,168
 $18,779,398
 $20,262,355
 $27,618,706
 $27,087,840
 $26,546,699
 $26,026,259
 $25,542,390
 $25,085,162
Liabilities 17,248,406
 16,849,438
 16,514,818
 16,231,134
 15,988,058
 15,778,595
 16,893,307
 22,634,719
 22,035,566
 21,519,248
 21,072,481
 20,685,165
 20,346,458
Net Present Value 3,369,282
 3,474,598
 3,398,943
 3,300,893
 3,158,110
 3,000,803
 3,369,048
 4,983,987
 5,052,274
 5,027,451
 4,953,778
 4,857,225
 4,738,704
% Change (3.0)%   (2.2)% (5.0)% (9.1)% (13.6)% (3.0)% (1.4)%   (0.5)% (1.9)% (3.9)% (6.2)%
The computation of prospective effects of hypothetical interest rate changes are based on numerous assumptions, including relative levels of market interest rates, asset prepayments, and deposit decay, and should not be relied upon as indicative of actual results. Further, the computations do not contemplate any actions the Company may undertake in response to changes in interest rates. Actual amounts may differ from the projections set forth above should market conditions vary from the underlying assumptions.

Derivative Contracts. In the normal course of business, the Company uses derivative instruments to meet the needs of its customers and manage exposure to fluctuations in interest rates. The following table summarizes the aggregate notional amounts, market values, and terms of the Company’s derivative positions as of December 31, 20172019 and 2016:2018:
Outstanding Derivatives Positions
December 31, 2017 December 31, 2016
December 31,December 31,
20192019 2018
NotionalNotional Net Value Weighted Average Term (Years) Notional Net Value Weighted Average Term (Years)Notional Net Value Weighted Average Term (Years) Notional Net Value Weighted Average Term (Years)
(dollars in thousands)
$1,116,341
 $(51,715) 16.0
 $1,011,906
 $(61,478) 17.9
872,595
 $(53,667) 16.1
 $1,017,773
 $(42,477) 15.8

Item 8.Financial Statements and Supplementary Data
The Company's Consolidated Financial Statements and Supplementary Data included in this Annual Report is immediately following the Index to Consolidated Financial Statements page to this Annual Report.
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 PAGE
  
  
  
  
  

Report of Independent Registered Public Accounting Firm


To the Stockholders and the Board of Directors of
Western Alliance Bancorporation

Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Western Alliance Bancorporation and Subsidiaries (the Company) as of December 31, 20172019 and 2016,2018, the related consolidated statements of income, comprehensive income, stockholders'stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2017,2019, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 20172019 and 2016,2018, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2017,2019, in conformity with accounting principles generally accepted in the United States of America.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company'sCompany’s internal control over financial reporting as of December 31, 2017,2019, based on criteria established in Internal Control - IntegratedControl-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013, and our report, dated February 26, 2018,March 2, 2020, expressed an unqualified opinion on the effectiveness of the Company'sCompany’s internal control over financial reporting.
Basis for Opinion
These financial statements are the responsibility of the Company'sCompany’s management. Our responsibility is to express an opinion on the Company'sCompany’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matters
The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.
Allowance for Credit Losses
As described in Notes 1 and 3 of the consolidated financial statements, the Company’s allowance for credit losses totaled $168 million as of December 31, 2019. The allowance for credit losses represents an amount considered adequate to absorb estimated probable losses on existing loans that may become uncollectable, based on evaluation of the collectability of loans and prior credit loss experience, together with other factors.
The allowance for credit losses consists of two components: the specific allowance for impaired loans and the general allowance for non-impaired loans. The general allowance is comprised of a quantitative reserve based on the Company’s historical charge-off experience and a qualitative reserve based on management’s evaluation of several judgmental factors. The qualitative factors evaluated by management include levels of and trends in delinquencies and impaired loans; levels of and trends in charge-offs

 /s/and recoveries; trends in volume and terms of loans; changes in underwriting standards and lending policies; experience, ability and depth of lending staff; national and local economic trends and conditions; changes in credit concentrations; out-of-market exposures; changes in quality of loan review system; and changes in the value of underlying collateral. The evaluation and measurement of these qualitative factors requires management to apply a significant amount of judgment and involves a high degree of estimation.
We identified the qualitative reserve of the allowance for credit losses as a critical audit matter because auditing the underlying qualitative factors used in the qualitative reserve involved a high degree of auditor judgment given the high degree of subjectivity exercised by management in developing the qualitative adjustment, which resulted in high estimation uncertainty.
Our audit procedures related to management’s evaluation and establishment of the qualitative reserve of the allowance for credit losses include the following, among others:
We obtained an understanding of the relevant controls related to the evaluation and establishment of the qualitative reserve of the allowance for credit losses and tested such controls for design and operating effectiveness, including controls related to management’s assessment and review of the qualitative factor changes and conclusions.
We tested management’s process and significant judgments in the evaluation and establishment of the qualitative reserve of the allowance for credit losses, which included:
Evaluating management’s considerations and data utilized as a basis for the adjustments relating to qualitative reserve factors, as well as testing the completeness and accuracy of the underlying data.
Evaluating the reasonableness of management’s judgments related to the qualitative and quantitative assessment of the considerations and data utilized in the determination of qualitative general reserve factors and the resulting qualitative component of the allowance for credit losses.

/s/ RSM US LLP
We have served as the Company'sCompany’s auditor since 1994.

Phoenix, Arizona
February 26, 2018March 2, 2020



WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
  December 31,
  2019 2018
  (in thousands,
except shares and per share amounts)
Assets:    
Cash and due from banks $185,977
 $180,053
Interest-bearing deposits in other financial institutions 248,619
 318,519
Cash, cash equivalents, and restricted cash 434,596
 498,572
Money market investments 
 7
Investment securities - AFS, at fair value; amortized cost of $3,317,928 at December 31, 2019 and $3,339,888 at December 31, 2018 3,346,310
 3,276,988
Investment securities - HTM, at amortized cost; fair value of $516,261 at December 31, 2019 and $298,648 at December 31, 2018 485,107
 302,905
Investment securities - equity 138,701
 115,061
Investments in restricted stock, at cost 66,509
 66,132
Loans - HFS 21,803
 
Loans, net of deferred loan fees and costs 21,101,493
 17,710,629
Less: allowance for credit losses (167,797) (152,717)
Net loans held for investment 20,933,696
 17,557,912
Premises and equipment, net 125,838
 119,474
Operating lease right of use asset 72,558
 
Other assets acquired through foreclosure, net 13,850
 17,924
Bank owned life insurance 174,046
 170,145
Goodwill 289,895
 289,895
Other intangible assets, net 7,713
 9,260
Deferred tax assets, net 18,025
 31,990
Investments in LIHTC and renewable energy 409,365
 369,648
Other assets 283,936
 283,573
Total assets $26,821,948
 $23,109,486
Liabilities:    
Deposits:    
Non-interest-bearing demand $8,537,905
 $7,456,141
Interest-bearing 14,258,588
 11,721,306
Total deposits 22,796,493
 19,177,447
Customer repurchase agreements 16,675
 22,411
Other borrowings 
 491,000
Qualifying debt 393,563
 360,458
Operating lease liability 78,112
 
Other liabilities 520,357
 444,436
Total liabilities 23,805,200
 20,495,752
Commitments and contingencies (Note 15) 

 

Stockholders’ equity:    
Common stock - par value $0.0001; 200,000,000 authorized; 104,527,544 shares issued at December 31, 2019 and 106,741,870 at December 31, 2018 10
 10
Treasury stock, at cost (2,003,873 shares at December 31, 2019 and 1,793,231 shares at December 31, 2018) (62,728) (53,083)
Additional paid in capital 1,374,141
 1,417,724
Accumulated other comprehensive income (loss) 25,008
 (33,622)
Retained earnings 1,680,317
 1,282,705
Total stockholders’ equity 3,016,748
 2,613,734
Total liabilities and stockholders’ equity $26,821,948
 $23,109,486
  December 31,
  2017 2016
  (in thousands,
except shares and per share amounts)
Assets:    
Cash and due from banks $181,191
 $168,066
Interest-bearing deposits in other financial institutions 235,577
 116,425
Cash and cash equivalents 416,768
 284,491
Investment securities - measured at fair value; amortized cost of $1,055 at December 31, 2016 
 1,053
Investment securities - AFS, at fair value; amortized cost of $3,515,401 at December 31, 2017 and $2,633,298 at December 31, 2016 3,499,519
 2,609,380
Investment securities - HTM, at amortized cost; fair value of $256,314 at December 31, 2017 and $91,966 at December 31, 2016 255,050
 92,079
Investments in restricted stock, at cost 65,785
 65,249
Loans - HFS 
 18,909
Loans - HFI, net of deferred loan fees and costs 15,093,935
 13,189,527
Less: allowance for credit losses (140,050) (124,704)
Net loans held for investment 14,953,885
 13,064,823
Premises and equipment, net 118,719
 119,833
Other assets acquired through foreclosure, net 28,540
 47,815
Bank owned life insurance 167,764
 164,510
Goodwill 289,895
 289,967
Other intangible assets, net 10,853
 12,927
Deferred tax assets, net 5,780
 95,194
Investments in LIHTC 267,023
 187,378
Other assets 249,504
 147,234
Total assets $20,329,085
 $17,200,842
Liabilities:    
Deposits:    
Non-interest-bearing demand $7,433,962
 $5,632,926
Interest-bearing 9,538,570
 8,916,937
Total deposits 16,972,532
 14,549,863
Customer repurchase agreements 26,017
 41,728
Other borrowings 390,000
 80,000
Qualifying debt 376,905
 367,937
Other liabilities 333,933
 269,785
Total liabilities 18,099,387
 15,309,313
Commitments and contingencies (Note 15) 
 
Stockholders’ equity:    
Common stock - par value $0.0001; 200,000,000 authorized; 107,057,520 shares issued at December 31, 2017 and 106,371,093 at December 31, 2016 10
 10
Treasury stock, at cost (1,570,155 shares at December 31, 2017 and 1,300,232 shares at December 31, 2016) (40,173) (26,362)
Additional paid in capital 1,424,540
 1,400,140
Accumulated other comprehensive (loss) (3,145) (4,695)
Retained earnings 848,466
 522,436
Total stockholders’ equity 2,229,698
 1,891,529
Total liabilities and stockholders’ equity $20,329,085
 $17,200,842
See accompanying Notes to Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED INCOME STATEMENTS
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Interest income:            
Loans, including fees $747,510
 $636,596
 $476,417
 $1,093,070
 $910,577
 $747,510
Investment securities 83,354
 52,570
 37,888
 111,939
 106,752
 83,354
Dividends 7,740
 9,002
 10,317
 6,133
 7,915
 7,740
Other 6,909
 2,338
 522
 13,903
 8,239
 6,909
Total interest income 845,513
 700,506
 525,144
 1,225,045
 1,033,483
 845,513
Interest expense:            
Deposits 41,965
 29,722
 21,795
 158,405
 90,464
 41,965
Other borrowings 561
 508
 5,678
 1,372
 4,329
 561
Qualifying debt 18,273
 12,998
 5,007
 23,390
 22,287
 18,273
Other 50
 65
 88
 1,466
 524
 50
Total interest expense 60,849
 43,293
 32,568
 184,633
 117,604
 60,849
Net interest income 784,664
 657,213
 492,576
 1,040,412
 915,879
 784,664
Provision for credit losses 17,250
 8,000
 3,200
 18,500
 23,000
 17,250
Net interest income after provision for credit losses 767,414
 649,213
 489,376
 1,021,912
 892,879
 767,414
Non-interest income:            
Service charges and fees 20,346
 18,824
 14,782
 23,353
 22,295
 20,346
Income from equity investments 8,290
 8,595
 4,496
Card income 6,313
 5,226
 4,718
 6,979
 8,009
 6,313
Income from equity investments 4,496
 2,664
 564
Foreign currency income 4,987
 4,760
 3,536
Income from bank owned life insurance 3,861
 3,762
 3,899
 3,901
 3,946
 3,861
Foreign currency income 3,536
 3,419
 1,535
Lending related income and gains (losses) on sale of loans, net 2,212
 5,295
 1,390
 3,158
 4,340
 2,212
Gain (loss) on sales of investment securities, net 2,343
 1,059
 615
 3,152
 (7,656) 2,343
(Loss) on extinguishment of debt 
 
 (81)
Fair value gain (loss) adjustments on assets measured at fair value, net 5,119
 (3,611) (1)
Other income 2,237
 2,666
 2,346
 6,156
 2,438
 2,238
Total non-interest income 45,344
 42,915
 29,768
 65,095
 43,116
 45,344
Non-interest expense:            
Salaries and employee benefits 214,344
 188,810
 149,828
 279,274
 253,238
 214,344
Legal, professional, and directors' fees 29,814
 24,610
 18,548
 37,009
 28,722
 29,814
Occupancy 27,860
 27,303
 22,180
 32,507
 29,404
 27,860
Deposit costs 31,719
 18,900
 9,731
Data processing 19,225
 19,657
 15,830
 30,577
 22,716
 19,225
Insurance 14,042
 12,898
 11,003
 11,924
 14,005
 14,042
Deposit costs 9,731
 4,983
 907
Loan and repossessed asset expenses 4,617
 2,999
 4,377
 7,571
 4,578
 4,617
Business development 7,043
 5,960
 6,128
Marketing 3,804
 3,596
 2,885
 4,199
 3,770
 3,804
Card expense 3,413
 1,939
 1,710
 2,346
 4,301
 3,413
Intangible amortization 2,074
 2,788
 1,970
 1,547
 1,594
 2,074
Net (gain) loss on sales / valuations of repossessed and other assets (80) (125) (2,070)
Acquisition / restructure expense 
 12,412
 8,836
Net loss (gain) on sales / valuations of repossessed and other assets 3,818
 9
 (80)
Other expense 32,097
 29,079
 24,602
 33,247
 38,470
 25,969
Total non-interest expense 360,941
 330,949
 260,606
 482,781
 425,667
 360,941
Income before provision for income taxes 451,817
 361,179
 258,538
 604,226
 510,328
 451,817
Income tax expense 126,325
 101,381
 64,294
 105,055
 74,540
 126,325
Net income 325,492
 259,798
 194,244
 $499,171
 $435,788
 $325,492
Dividends on preferred stock 
 
 750
Net income available to common stockholders $325,492
 $259,798
 $193,494
      

 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Earnings per share available to common stockholders:      
Earnings per share:      
Basic $3.12
 $2.52
 $2.05
 $4.86
 $4.16
 $3.12
Diluted 3.10
 2.50
 2.03
 4.84
 4.14
 3.10
Weighted average number of common shares outstanding:            
Basic 104,179
 103,042
 94,570
 102,667
 104,669
 104,179
Diluted 104,997
 103,843
 95,219
 103,133
 105,370
 104,997
See accompanying Notes to Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands) (in thousands)
Net income $325,492
 $259,798
 $194,244
 $499,171
 $435,788
 $325,492
Other comprehensive income (loss), net:            
Unrealized gain (loss) on AFS securities, net of tax effect of $(3,973), $15,099, and $3,922, respectively 6,334
 (24,254) (6,117)
Unrealized gain on SERP, net of tax effect of $(79), $(18) and $(52), respectively 264
 31
 90
Unrealized (loss) on junior subordinated debt, net of tax effect of $2,220, $1,405 and $2,679, respectively (3,604) (2,077) (4,276)
Realized (gain) on sale of AFS securities included in income, net of tax effect of $899, $404, and $230, respectively (1,444) (655) (385)
Unrealized gain (loss) on AFS securities, net of tax effect of $(23,205), $13,354, and $(3,973), respectively 71,222
 (40,808) 6,334
Unrealized (loss) gain on SERP, net of tax effect of $138, $24, and $(79), respectively (412) (77) 264
Unrealized (loss) gain on junior subordinated debt, net of tax effect of $3,197, $(1,857), and $2,220, respectively (9,804) 5,693
 (3,604)
Realized (gain) loss on sale of AFS securities included in income, net of tax effect of $776, $(1,883), and $899, respectively (2,376) 5,773
 (1,444)
Net other comprehensive income (loss) 1,550
 (26,955) (10,688) 58,630
 (29,419) 1,550
Comprehensive income $327,042
 $232,843
 $183,556
 $557,801
 $406,369
 $327,042
See accompanying Notes to Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
  Common Stock Additional Paid in Capital Treasury Stock Accumulated Other Comprehensive (Loss) Income Retained Earnings Total Stockholders’ Equity
  Shares Amount     
 (in thousands)
Balance, December 31, 2016 105,071
 $10
 $1,400,140
 $(26,362) $(4,695) $522,436
 $1,891,529
Balance, January 1, 2017 (1) 105,071
 10
 1,400,140
 (26,362) (4,695) 522,974
 1,892,067
Net income 
 
 
 
 
 325,492
 325,492
Exercise of stock options 38
 
 846
 
 
 
 846
Restricted stock, performance stock units, and other grants, net 648
 
 23,554
 
 
 
 23,554
Restricted stock surrendered (2) (270) 
 
 (13,811) 
 
 (13,811)
Other comprehensive income, net 
 
 
 
 1,550
 
 1,550
Balance, December 31, 2017 105,487
 $10
 $1,424,540
 $(40,173) $(3,145) $848,466
 $2,229,698
Balance, January 1, 2018 (3) 105,487
 10
 1,424,540
 (40,173) (4,203) 849,524
 2,229,698
Net income 
 
 
 
 
 435,788
 435,788
Exercise of stock options 22
 
 554
 
 
 
 554
Restricted stock, performance stock units, and other grants, net 564
 
 25,711
 
 
 
 25,711
Restricted stock surrendered (2) (223) 
 
 (12,910) 
 
 (12,910)
Stock repurchase (901) 
 (33,081) 
 
 (2,607) (35,688)
Other comprehensive loss, net 
 
 
 
 (29,419) 
 (29,419)
Balance, December 31, 2018 104,949
 $10
 $1,417,724
 $(53,083) $(33,622) $1,282,705
 $2,613,734
Net income 
 
 
 
 
 499,171
 499,171
Exercise of stock options 3
 
 80
 
 
 
 80
Restricted stock, performance stock unit, and other grants, net 605
 
 26,238
 
 
 
 26,238
Restricted stock surrendered (2) (211) 
 
 (9,645) 
 
 (9,645)
Stock repurchase (2,822) 
 (69,901) 
 
 (50,230) (120,131)
Dividends paid 
 
 
 
 
 (51,329) (51,329)
Other comprehensive income, net 
 
 
 
 58,630
 
 58,630
Balance, December 31, 2019 102,524
 $10
 $1,374,141
 $(62,728) $25,008
 $1,680,317
 $3,016,748
 Preferred Stock Common Stock Additional Paid in Capital Treasury Stock Accumulated Other Comprehensive Income (Loss) Retained Earnings Total Stockholders’ Equity
 Shares Amount Shares Amount     
 (in thousands)
Balance, Dec 31, 201471
 $70,500
 88,691
 $9
 $837,603
 $(9,276) $16,639
 $85,453
 $1,000,928
Balance, Jan 1, 2015 (1)71
 70,500
 88,691
 9
 837,603
 (9,276) 32,948
 69,144
 1,000,928
Net income
 
 
 
 
 
 
 194,244
 194,244
Exercise of stock options
 
 182
 
 1,935
 
 
 
 1,935
Restricted stock, performance stock units, and other grants, net
 
 732
 
 24,617
 
 
 
 24,617
Restricted stock surrendered
 
 (275) 
 
 (7,603) 
 
 (7,603)
Issuance of common stock in acquisition of Bridge (2)
 
 12,997
 1
 431,030
 
 
 
 431,031
ATM common stock issuance, net
 
 760
 
 28,288
 
 
 
 28,288
Preferred stock redemption(71) (70,500)   
 
 
 
 
 (70,500)
Dividends on preferred stock
 
 
 
 
 
 
 (750) (750)
Other comprehensive loss, net
 
 
 
 
 
 (10,688) 
 (10,688)
Balance, Dec 31, 2015
 $
 103,087
 $10
 $1,323,473
 $(16,879) $22,260
 $262,638
 $1,591,502
Net income
 
 
 
 
 
 
 259,798
 259,798
Exercise of stock options
 
 77
 
 1,070
 
 
 
 1,070
Restricted stock, performance stock units, and other grants, net
 
 662
 
 19,812
 
 
 
 19,812
Restricted stock surrendered
 
 (305) 
 
 (9,483) 
 
 (9,483)
ATM common stock issuance, net
 
 1,550
 
 55,785
 
 
 
 55,785
Other comprehensive loss, net
 
 
 
 
 
 (26,955) 
 (26,955)
Balance, Dec 31, 2016
 $
 105,071
 $10
 $1,400,140
 $(26,362) $(4,695) $522,436
 $1,891,529
Balance, Jan 1, 2017 (3)
 
 105,071
 10
 1,400,140
 (26,362) (4,695) 522,974
 1,892,067
Net income
 
 
 
 
 
 
 325,492
 325,492
Exercise of stock options
 
 38
 
 846
 
 
 
 846
Restricted stock, performance stock unit, and other grants, net
 
 648
 
 23,554
 
 
 
 23,554
Restricted stock surrendered
 
 (270) 
 
 (13,811) 
 
 (13,811)
Other comprehensive income, net
 
 
 
 
 
 1,550
 
 1,550
Balance, Dec 31, 2017
 $
 105,487
 $10
 $1,424,540
 $(40,173) $(3,145) $848,466
 $2,229,698

(1)As adjusted due to the Company's election to early adopt an elementfor adoption of ASU 2016-01 issued by the FASB in January 2016. The cumulative effect of adoption of this guidance at January 1, 2015 resulted in a decrease to retained earnings of $16.3 million and a corresponding increase to accumulated other comprehensive income.
(2)Includes value of certain share-based awards replaced in connection with the acquisition.
(3)As adjusted, due to the Company's election to early adopt ASU 2017-12 issued by the FASB in August 2017.2017-12. The cumulative effect of adoption of this guidance at January 1, 2017 resulted in an increase to retained earnings of $0.5 million and a corresponding increase to loans for the fair market value adjustment on the swaps.
(2)Share amounts represent Treasury Shares, see "Note 1. Summary of Significant Accounting Policies" for further discussion.
(3)As adjusted for adoption of ASU 2016-01 and ASU 2018-02. The cumulative effect of adoption of this guidance at January 1, 2018 resulted in an increase to retained earnings of $1.1 million and a corresponding decrease to accumulated other comprehensive income.
See accompanying Notes to Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
 Year Ended December 31, December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands) (in thousands)
Cash flows from operating activities:            
Net income $325,492
 $259,798
 $194,244
 $499,171
 $435,788
 $325,492
Adjustments to reconcile net income to cash provided by operating activities:            
Provision for credit losses 17,250
 8,000
 3,200
 18,500
 23,000
 17,250
Depreciation and amortization 13,393
 12,494
 8,466
 18,457
 14,319
 13,393
Stock-based compensation 23,554
 20,338
 25,533
 26,238
 25,711
 23,554
Excess tax benefit of stock-based compensation (6,608) (4,075) (5,874)
Deferred income taxes 88,471
 7,644
 3,254
 (5,129) (16,709) 88,471
Amortization of net premiums for investment securities 16,938
 13,790
 9,775
 17,095
 14,247
 16,938
Amortization of tax credit investments 25,355
 17,336
 14,437
 41,501
 35,898
 25,355
Amortization of operating lease right of use asset 10,458
 
 
Accretion of fair market value adjustments on loans acquired from business combinations (28,235) (29,209) (17,144) (12,678) (18,565) (28,235)
Accretion and amortization of fair market value adjustments on other assets and liabilities acquired from business combinations 2,385
 3,098
 1,279
 1,857
 1,904
 2,385
Income from bank owned life insurance (3,861) (3,762) (3,899) (3,901) (3,946) (3,861)
(Gains) / Losses on:            
Sales of investment securities (2,343) (1,059) (615) (3,152) 7,656
 (2,343)
Assets measured at fair value, net (5,119) 3,611
 1
Sale of loans (945) (2,492) (517) (690) (2,638) (945)
Extinguishment of debt 
 
 81
Other assets acquired through foreclosure, net (228) 372
 (2,628) (604) (1,214) (228)
Valuation adjustments of other repossessed assets, net 120
 (268) 182
 4,144
 1,267
 120
Sale of premises, equipment, and other assets, net 28
 21
 376
 278
 (44) 28
Changes in, net of acquisitions:      
Other assets (105,293) (19,047) (23,966)
Other liabilities 18,338
 (2,334) 14,231
Changes in other assets and liabilities, net 111,346
 20,687
 (93,564)
Net cash provided by operating activities 383,811
 280,645
 220,415
 717,772
 540,972
 383,811
Cash flows from investing activities:            
Investment securities - measured at fair value      
Principal pay downs and maturities 
 395
 347
Investment securities - trading      
Proceeds from sales 994
 
 
 
 
 994
Investment securities - AFS            
Purchases (1,429,434) (1,205,057) (827,002) (927,589) (520,734) (1,429,434)
Principal pay downs and maturities 430,934
 499,541
 273,950
 785,659
 425,151
 430,934
Proceeds from sales 110,104
 25,504
 132,546
 150,377
 154,434
 110,104
Investment securities - HTM            
Purchases (169,400) (92,384) 
 (131,384) (56,575) (169,400)
Principal pay downs and maturities 6,174
 94
 
 21,594
 8,987
 6,174
Proceeds from sales 10,000
 
 
Equity securities carried at fair value      
Purchases (32,725) (71,728) 
Redemption of principal (reinvestment of dividends) 14,598
 (577) 
Proceeds from sales 
 48,639
 
Purchase of investment tax credits (38,098) (28,847) (29,437) (141,668) (109,598) (38,098)
Purchase of SBIC investments (5,819) 
 
 (8,688) (4,129) (5,819)
Sale (purchase) of money market investments, net 
 121
 330
 7
 (7) 
Proceeds from bank owned life insurance 607
 1,710
 797
 
 1,655
 607
(Purchase) liquidation of restricted stock (535) (7,139) (25,821)
(Purchase) liquidation of restricted stock, net (377) (347) (535)
Loan fundings and principal collections, net (1,873,387) (810,543) (1,269,351) (3,429,014) (2,586,703) (1,873,387)
Purchase of premises, equipment, and other assets, net (8,862) (10,574) (10,856) (35,148) (11,313) (8,862)
Proceeds from sale of other real estate owned and repossessed assets, net 21,195
 9,133
 45,627
 1,325
 9,412
 21,195
Cash and cash equivalents (used) acquired in acquisitions, net 
 (1,272,187) 342,427
Net cash used in investing activities (2,955,527) (2,890,233) (1,366,443) (3,723,033) (2,713,433) (2,955,527)
            

  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Cash flows from financing activities:      
Net increase (decrease) in deposits $2,422,669
 $2,519,239
 $1,357,855
Proceeds from issuance of subordinated debt 
 169,256
 148,211
Net increase (decrease) in borrowings 294,289
 (66,428) (257,038)
Proceeds from exercise of common stock options 846
 1,070
 1,935
Cash paid for tax withholding on vested restricted stock (13,811) (9,483) (7,603)
Redemption of preferred stock 
 
 (70,500)
Excess tax benefit of stock-based compensation 
 
 5,874
Cash dividends paid on preferred stock 
 
 (750)
Proceeds from issuance of stock in offerings, net 
 55,785
 28,288
Net cash provided by financing activities 2,703,993
 2,669,439
 1,206,272
Net increase (decrease) in cash and cash equivalents 132,277
 59,851
 60,244
Cash and cash equivalents at beginning of period 284,491
 224,640
 164,396
Cash and cash equivalents at end of period $416,768
 $284,491
 $224,640
Supplemental disclosure:      
Cash paid during the period for:      
Interest $59,838
 $41,565
 $28,831
Income taxes 99,430
 61,281
 54,590
Non-cash investing and financing activity:      
Transfers to other assets acquired through foreclosure, net 1,812
 13,110
 28,566
Unfunded commitments originated 123,012
 56,479
 39,617
Non-cash assets acquired in acquisition 
 1,284,557
 1,587,186
Non-cash liabilities acquired in acquisition 
 12,559
 1,764,996
Change in unrealized gain (loss) on AFS securities, net of tax 6,334
 (24,254) (6,117)
Change in unrealized (loss) gain on junior subordinated debt, net of tax (3,604) (2,077) (4,276)
  December 31,
  2019 2018 2017
  (in thousands)
Cash flows from financing activities:      
Net increase (decrease) in deposits $3,619,046
 $2,204,915
 $2,422,669
Net (decrease) increase in borrowings (496,736) 97,394
 294,289
Proceeds from exercise of common stock options 80
 554
 846
Cash paid for tax withholding on vested restricted stock (9,645) (12,910) (13,811)
Common stock repurchases (120,131) (35,688) 
Cash dividends paid on common stock (51,329) 
 
Net cash provided by financing activities 2,941,285
 2,254,265
 2,703,993
Net (decrease) increase in cash, cash equivalents, and restricted cash (63,976) 81,804
 132,277
Cash, cash equivalents, and restricted cash at beginning of period 498,572
 416,768
 284,491
Cash, cash equivalents, and restricted cash at end of period $434,596
 $498,572
 $416,768
Supplemental disclosure:      
Cash paid (received) during the period for:      
Interest $180,436
 $113,507
 $59,838
Income taxes, net of refunds (23,403) 18,760
 99,430
Non-cash operating, investing, and financing activity:      
Transfers to other assets acquired through foreclosure, net 898
 5,744
 1,812
See accompanying Notes to Consolidated Financial Statements.

WESTERN ALLIANCE BANCORPORATION AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of operation
WAL is a bank holding company headquartered in Phoenix, Arizona, incorporated under the laws of the state of Delaware. WAL provides a full spectrum of deposit, lending, treasury management, international banking, and online banking products and services through its wholly-owned banking subsidiary, WAB.
WAB operates the following full-service banking divisions: ABA, BON, FIB, Bridge, and TPB. The Company also serves business customers through a national platform of specialized financial services including AAB, Corporate Finance, Equity Fund Resources, HFF, Life Sciences Group, Mortgage Warehouse Lending, Public and Nonprofit Finance, Renewable Resource Group, Resort Finance, and Technology Finance.services. In addition, the Company has two non-bank subsidiaries, LVSP, which holdsheld and managesmanaged certain non-performing loansOREO properties, and OREO andCSI, a captive insurance company formed and licensed under the laws of the State of Arizona CS Insurance Company. CS Insurance Company wasand established as part of the Company's overall enterprise risk management strategy.
Basis of presentation
The accounting and reporting policies of the Company are in accordance with GAAP and conform to practices within the financial services industry. The accounts of the Company and its consolidated subsidiaries are included in the Consolidated Financial Statements.
Use of estimates
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Management's estimates and judgments are ongoing and are based on experience, current and expected future conditions, third-party evaluations and various other assumptions that management believes are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities, as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from those estimates and assumptions used in the Consolidated Financial Statements and related notes. Material estimates that are particularly susceptible to significant changes in the near term relate toto: the determination of the allowance for credit losses; estimated cash flows related to PCI loans; fair value determinations related to acquisitions and certain assets and liabilities carried at fair value; and accounting for income taxes.
Principles of consolidation
As of December 31, 2017,2019, WAL has the following significant wholly-owned subsidiaries: WAB and eight8 unconsolidated subsidiaries used as business trusts in connection with the issuance of trust-preferred securities.
The Bank has the following significant wholly-owned subsidiaries: WABT, which holdholds certain investment securities, municipal and nonprofit loans, and leases; WA PWI, LLC, which holds certain limited partnerships invested primarily in low income housing tax credits and small business investment corporations; and BW Real Estate, Inc., which operates as a real estate investment trust and holds certain of WAB's real estate loans and related securities.
The Company does not have any other significant entities that should be considered for consolidation.consolidated. All significant intercompany balances and transactions have been eliminated in consolidation.
Reclassifications
Certain amounts reported in prior periods may have been reclassified in the Consolidated Financial Statements to conform to the current presentation. The reclassifications have no effect on net income or stockholders’ equity as previously reported.

Business combinations
Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. Under the acquisition method, the acquiring entity in a business combination recognizes all of the acquired assets and assumed liabilities at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including identified intangible assets, exceeds the purchase price, a bargain purchase gain is recognized. Changes to estimated fair values from a business combination are recognized as an adjustment to goodwill during the measurement period and are recognized in the proper reporting period in which the adjustment amounts are determined. Results of operations of an acquired business are included in the Consolidated Income Statement from the date of acquisition. Acquisition-related costs, including conversion and restructuring charges, are expensed as incurred.
Cash and cash equivalents
For purposes of reporting cash flows, cash and cash equivalents include cash on hand, amounts due from banks (including cash items in process of clearing), and federal funds sold. Cash flows from loans originated by the Company and customer deposit accounts are reported net.
The Company maintains amounts due fromdeposit accounts with other banks, which at times may exceed federally insured limits. The Company has not experienced any losses in such accounts.

Cash reserve requirements
Depository institutions are required by law to maintain reserves against their transaction deposits. The reserves must be held in cash or with the FRB. Banks are permitted to meet this requirement by maintaining the specified amount as an average balance over a two-week period. The total of reserve balances was approximately $105.5$164.1 million and $43.7$145.9 million as of December 31, 20172019 and 2016,2018, respectively.
Investment securities
Investment securities include debt securities and equity securities. Debt securities may be classified as HTM, AFS, or measured at fair value.trading. The appropriate classification is initially decided at the time of purchase. Securities classified as HTM are those debt securities that the Company has both the intent and ability to hold to maturity regardless of changes in market conditions, liquidity needs, or general economic conditions. These securities are carried at amortized cost. The sale of aan HTM security within three months of its maturity date or after the majority of the principal outstanding has been collected is considered a maturity for purposes of classification and disclosure.
In May 2014, management reassessed its intent to hold certain CDOs classified as HTM, which necessitated a reclassification of all of the Company's HTM securities to AFS at the date of the transfer. As an extended period of time has passed since this reclassification was made, beginning in 2016, management believes that the Company is again able to assert that it has both the intent and ability to hold certain securities classified as HTM to maturity. See "Note 2. Investment Securities" of these Notes to Consolidated Financial Statements for additional detail related to HTM securities.
Securities classified as AFS or trading securities measured at fair value are reported as an asset inon the Consolidated Balance Sheet at their estimated fair value. As the fair valuevalues of AFS debt securities changes,change, the changes are reported net of income tax as an element of OCI, except for other-than-temporarily-impaired securities. When AFS debt securities are sold, the unrealized gaingains or loss islosses are reclassified from OCI to non-interest income. The changes in the fair values of trading securities are reported in non-interest income. Securities classified as AFS are both equity and debt securities that the Company intendsdoes not have the positive intent and ability to hold for an indefinite period of time, but not necessarily to maturity. Any decision to sell a security classified as AFS would be based on various factors, including significant movements in interest rates, changes in the maturity mix of the Company’s assets and liabilities, liquidity needs, decline in credit quality, and regulatory capital considerations.
Equity securities are reported as an asset on the Consolidated Balance Sheet at their estimated fair value, with fair value changes recognized as part of non-interest income in the Consolidated Income Statement.
Interest income is recognized based on the coupon rate and increased by accretion of discounts earned or decreased by the amortization of premiums paid over the contractual life of the security, adjusted for prepaymentprepayments estimates, using the interest method.
In estimating whether there are any OTTI losses on AFS securities, management considers thethe: 1) length of time and the extent to which the fair value has been less than amortized cost; 2) financial condition and near term prospects of the issuer; 3) impact of changes in market interest rates; and 4) intent and ability of the Company to retain its investment for a period of time sufficient to allow for any anticipated recovery in fair value and whether it is not more likely than notmore-likely-than-not the Company would be required to sell the security.

Declines in the fair value of individual AFS debt securities that are deemed to be other-than-temporary are reflected in earnings when identified. The fair value of the debt security then becomes the new cost basis. For individual debt securities where the Company does not intend to sell the security and it is not more likely than notmore-likely-than-not that the Company will be required to sell the security before recovery of its amortized cost basis, the other-than-temporary decline in fair value of the debt security related toto: 1) credit loss is recognized in earnings; and 2) interest rate, market, or other factors is recognized in other comprehensive income or loss.OCI.
For individual debt securities where the Company either intends to sell the security or more likely than notwhen it is more-likely-than-not the Company will not recover all of its amortized cost, the OTTI is recognized in earnings equal to the entire difference between the security's cost basis and its fair value at the balance sheet date. For individual debt securities for which a credit loss has been recognized in earnings, interest accruals and amortization and accretion of premiums and discounts are suspended when the credit loss is recognized. Interest received after accruals have been suspended is recognized in income on a cash basis.
Restricted stock
WAB is a member of the Federal Reserve System and, as part of its membership, is required to maintain stock in the FRB in a specified ratio to its capital. In addition, WAB is a member of the FHLB system and, accordingly, maintains an investment in capital stock of the FHLB based on the borrowing capacity used. The Bank also maintains an investment in its primary correspondent bank. All of theseThese investments are considered equity securities with no actively traded market. Therefore, the shares are considered restricted investment securities. These investments are carried at cost, which is equal to the value at which they may be redeemed. The dividend income received from the stock is reported in interest income. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. No impairment has been recorded to date.

Loans held for sale

Loans held for sale consist of SBA loans that the Company originates (or acquires) and intends to sell. These loans are carried at the lower of aggregate cost or fair value. Fair value is determined based on available market data for similar assets, expected cash flows, and appraisals of underlying collateral or the credit quality of the borrower. Gains and losses on the sale of loans are recognized pursuant to ASC 860, Transfers and Servicing.Servicing. Interest income ofon these loans is accrued daily and loan origination fees and costs are deferred and included in the cost basis of the loan. The Company issues various representations and warranties associated with these loan sales. The Company has not experienced any losses as a result of these representations and warranties.
Loans, held for investment
The Company generally holds loans for investment and has the intent and ability to hold loans until their maturity. Therefore, they are reported at book value. Net loans are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts, purchase accounting fair value adjustments, and an allowance for credit losses. In addition, the book valuevalues of loans that are subject to a fair value hedge isare adjusted for changes in value attributable to the effective portion of the hedged benchmark interest rate risk.
The Company may also acquire loans through a business combination. These acquired loans are recorded at their estimated fair value on the date of purchase, which is comprised of unpaid principal adjusted for estimated credit losses and interest rate fair value adjustments. Loans are evaluated individually at the acquisition date to determine if there has been credit deterioration since origination. Such loans may then be aggregated and accounted for as a pool of loans based on common characteristics. When the Company acquires such loans, the yield that may be accreted (accretable yield) is limited to the excess of the Company’s estimate of undiscounted cash flows expected to be collected over the Company’s initial investment in the loan. The excess of contractual cash flows over the cash flows expected to be collected may not be recognized as an adjustment to yield, loss, or a valuation allowance. Subsequent increases in cash flows expected to be collected generally are recognized prospectively through adjustment of the loan’s yield over the remaining life. Subsequent decreases to cash flows expected to be collected are recognized as impairment.impairment losses. The Company may not carry over or create a valuation allowance in the initial accounting for loans acquired under these circumstances. For purchased loans that are not deemed impaired at the acquisition date, fair value adjustments attributable to both credit and interest rates are accreted (or amortized) over the contractual life of the individual loan. For additional information, see "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Consolidated Financial Statements.
LoanDeferred loan fees collected for the origination of loans less direct loan originationand costs, (net deferred loan fees)premiums and discounts, and certain purchase accounting fair value adjustments, are amortized over the contractual life of the loan through interest income. If thea loan has scheduled payments, the amortization of the net deferred loan fee is calculated using the interest method over the contractual life of the loan. If thea loan does not have scheduled payments, such as a line of credit, the net deferred loan fee is recognized as interest income on a straight-line basis over the

contractual life of the loan commitment. Commitment fees based on a percentage of a customer’s unused line of credit and fees related to standby letters of credit are recognized over the commitment period. When loans are repaid, any remaining unamortized balances of premiums, discounts, or net deferred fees are recognized as interest income.
Non-accrual loans: The Company considers a loan past due when the borrower fails to make a schedule payment on the loan. When a borrower discontinues making payments as contractually required by the note, the Company must determine whether it is appropriate to continue to accrue interest. The Company ceases accruing interest income when the loan has become delinquent by more than 90 days or when management determines that the full repayment of principal and collection of interest according to contractual terms is no longer likely. The Company may decide to continue to accrue interest on certain loans more than 90 days delinquent if the loans are well secured by collateral and in the process of collection.
For all loan types, when a loan is placed on non-accrual status, all interest accrued but uncollected is reversed against interest income in the period in which the status is changed, and the Company makes a loan-level decision to apply either the cash basis or cost recovery method. The Company recognizes income on a cash basis only for those non-accrual loans for which the collection of the remaining principal balance is not in doubt. Under the cost recovery method, subsequent payments received from the customer are applied to principal and generally no further interest income is recognized until the principal has been paid in full or until circumstances have changed such that payments are again consistently received as contractually required.
Impaired loans: A loan is identified as impaired when it is no longer probable that interest and principal will be collected according to the contractual terms of the original loan agreement. Generally, impaired loans are classified as non-accrual. However, in certain instances, impaired loans may continue on an accrual basis, if full repayment of all principal and interest is expected and the loan is both well secured and in the process of collection. Impaired loans are measured for reserve requirements in accordance with ASC 310, Receivables, based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the collateral less applicable disposition costs if the loan is collateral dependent. The amount of an impairment reserve, if any, and any subsequent changes are recorded as a provision for credit losses. Losses are recorded as a charge-off when losses are confirmed. In addition to management's internal loan review process, regulators may from time to time direct the Company to modify loan grades, loan impairment calculations, or loan impairment methodology.

Troubled Debt Restructured Loans:Loans: A TDR loan is a loan onin which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. A TDR loan is also considered impaired. A TDR loan may be returned to accrual status when the loan is brought current, has performed in accordance with the contractual restructured terms for a reasonable period of time (generally six months) and the ultimate collectability of the total contractual restructured principal and interest is no longer in doubt. However, such loans continue to be considered impaired. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.
Allowance for credit losses
Credit risk is inherent in the business of extending loans and leases to borrowers, for which the Company must maintain an adequate allowance for credit losses. The allowance for credit losses is established through a provision for credit losses recorded to expense. Loans are charged against the allowance for credit losses when management believes that the contractual principal or interest will not be collected. Subsequent recoveries, if any, are credited to the allowance. The allowance is an amount believed adequate to absorb estimated probable losses on existing loans that may become uncollectable, based on evaluation of the collectability of loans and prior credit loss experience, together with other factors. The Company formally re-evaluates and establishes the appropriate level of the allowance for credit losses on a quarterly basis.
The allowance consists of specific and general components. The specific allowance applies to impaired loans. For impaired collateral dependent loans, the reserve is calculated based on the collateral value, net of estimated disposition costs. Generally, the Company obtains an independent collateral valuation analysis for each loan over a specified dollar threshold every twelve12 months. Loans not collateral dependent are evaluated based on the expected future cash flows discounted at the original contractual interest rate.
The general allowance covers all non-impaired loans and incorporates several quantitative and qualitative factors, which are used for all of the Company's portfolio segments. Quantitative factors include company-specific, ten-year10-year historical net charge-offs stratified by loans with similar characteristics. Qualitative factors include: 1) levels of and trends in delinquencies and impaired loans; 2) levels of and trends in charge-offs and recoveries; 3) trends in volume and terms of loans; 4) changes in underwriting standards or lending policies; 5) experience, ability, depth of lending staff; 6) national and local economic trends

and conditions; 7) changes in credit concentrations; 8) out-of-market exposures; 9) changes in quality of loan review system; and 10) changes in the value of underlying collateral.
Due to the credit concentration of the Company's loan portfolio in real estate secured loans, the value of collateral is heavily dependent on real estate values in Arizona, Nevada, Arizona, and California. While management uses the best information available to make its evaluation, future adjustments to the allowance may be necessary if there are significant changes in economic or other conditions. In addition, regulators, as an integral part of their examination processes, periodically review the Bank's allowance for credit losses, and may require the Bank to make additionsadjustments to the allowance based on their judgment about information available to them at the time of their examination. Management regularly reviews the assumptions and formulae used in determining the allowance and makes adjustments if required to reflect the current risk profile of the portfolio.
Transfers of financial assets
Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed surrendered when thethe: 1) assets have been isolated from the Company; 2) transferee obtains the right to pledge or exchange the transferred assets; and 3) Company no longer maintains effective control over the transferred assets through an agreement to repurchase the transferred assets before maturity.

Premises and equipment
Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed principally by the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the term of the lease or the estimated life of the improvement, whichever is shorter. Depreciation and amortization is computed using the following estimated lives: 
  Years
Bank premises 31
Furniture, fixtures, and equipment 3 - 10
Leasehold improvements (1) 3 - 10
(1)Depreciation is recorded over the lesser of the relevant 3 to 10 yearsyear term or the termremaining life of the lease.
Management periodically reviews premises and equipment in order to determine if facts and circumstances suggest that the value of an asset is not recoverable.
Leases (lessee)
At inception, contracts are evaluated to determine whether the contract constitutes a lease agreement. For contracts that are determined to be an operating lease, a corresponding ROU asset and operating lease liability are recorded in separate line items on the Consolidated Balance Sheet. A ROU asset represents the Company’s right to use an underlying asset during the lease term and a lease liability represents the Company’s commitment to make contractually obligated lease payments. Operating lease ROU assets and liabilities are recognized at the commencement date of the lease and are based on the present value of lease payments over the lease term. The measurement of the operating lease ROU asset includes any lease payments made and is reduced by lease incentives that are paid or are payable to the Company. Variable lease payments that depend on an index or rate such as the Consumer Price Index are included in lease payments based on the rate in effect at the commencement date of the lease. Lease payments are recognized on a straight-line basis as part of occupancy expense over the lease term.
As the rate implicit in the lease is not readily determinable, the Company's incremental collateralized borrowing rate is used to determine the present value of lease payments. This rate gives consideration to the applicable FHLB collateralized borrowing rates and is based on the information available at the commencement date. The Company has elected to apply the short-term lease measurement and recognition exemption to leases with an initial term of 12 months or less; therefore, these leases are not recorded on the Company’s Consolidated Balance Sheet, but rather, lease expense is recognized over the lease term on a straight-line basis. The Company’s lease agreements may include options to extend or terminate the lease. These options are included in the lease term when it is reasonably certain that the options will be exercised.
In addition to the package of practical expedients, the Company also elected the practical expedient that allows lessees to make an accounting policy election to not separate non-lease components from the associated lease component, and instead account for them all together as part of the applicable lease component. This practical expedient can be elected separately for each underlying class of asset. The majority of the Company’s non-lease components such as common area maintenance, parking, and taxes are variable, and are expensed as incurred. Variable payment amounts are determined in arrears by the landlord depending on actual costs incurred.
Goodwill and other intangible assets
The Company records as goodwill the excess of the purchase price in a business combination over the fair value of the identifiable net assets acquired in accordance with applicable guidance. The Company performs its annual goodwill and intangibles impairment tests as of October 1 each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. The Company can first elect to assess, through qualitative factors, whether it is more likely than not that goodwill is impaired. If the qualitative assessment indicates potential impairment, a quantitative impairment test is necessary. If, based on the Company will proceed with the two-step process. The first step testsquantitative test, a reporting unit's carrying amount exceeds its fair value, a goodwill impairment charge for impairment, while the second step, if necessary, measures the impairment. The resulting impairment amount, if any,this difference is chargedrecorded to current period earnings as non-interest expense.
The Company’s intangible assets consist primarily of core deposit intangible assets that are amortized over periods ranging from 5five to 10 years. The Company considers the remaining useful lives of its core deposit intangible assets each reporting period, as required by ASC 350, Intangibles—Goodwill and Other, to determine whether events and circumstances warrant a revision to the remaining period of amortization. If the estimate of an intangible asset’s remaining useful life has changed, the remaining carrying amount of the intangible asset is amortized prospectively over the revised remaining useful life. The Company has not revised its estimates of the useful lives of its core deposit intangibles during the years ended December 31, 2017, 2016,2019, 2018, or 2015.
Other assets acquired through foreclosure
Other assets acquired through foreclosure consist primarily of properties acquired as a result of, or in-lieu-of, foreclosure. Properties or other assets (primarily repossessed assets formerly leased) are classified as OREO and other repossessed property and are initially reported at fair value of the asset less estimated selling costs. Subsequent adjustments are based on the lower of carrying value or fair value less estimated costs to sell the property. Costs related to the development or improvement of the assets are capitalized and costs related to holding the assets are charged to non-interest expense. Property is evaluated regularly to ensure the recorded amount is supported by its current fair value and valuation allowances.2017.

Low income housing and renewable energy tax credits
The Company investsholds ownership interests in Limited Partnerships formed for the purpose of investinglimited partnerships and limited liability companies that invest in low incomeaffordable housing projects, which qualify for federal LIHTC.and renewable energy projects. These investments are expecteddesigned to generate a return primarily through the realization of federal tax credits over a ten-year period.and deductions, which may be subject to recapture by taxing authorities if compliance requirements are not met. The Company accounts for theseits low income housing investments using the proportional amortization method. Renewable energy projects are accounted for under the deferral method, whereby the investment tax credits are reflected as an immediate reduction in income taxes payable and the carrying value of the asset in the period that the investment tax credits are claimed. See "Note 14. Income Taxes" of these Notes to Consolidated Financial Statements for further discussion.
The Company evaluates its interests in these entities to determine if it has a variable interest and whether it is required to consolidate these entities. A variable interest is an investment or other interest that will absorb portions of an entity's expected losses or receive portions of the entity's expected residual returns. If the Company determines that it has a variable interest in an entity, it evaluates whether such interest is in a variable interest entity. A VIE is broadly defined as an entity where either: 1) the equity investors as a group, if any, lack the power through voting or similar rights to direct the activities of an entity that most significantly impact the entity's economic performance or 2) the equity investment at risk is insufficient to finance that entity's activities without additional subordinated financial support. The Company is required to consolidate any VIE when it is determined to be the primary beneficiary of the VIE's operations.
A variable interest holder is considered to be the primary beneficiary of a VIE if it has both the power to direct the activities of a VIE that most significantly impact the entity's economic performance and has the obligation to absorb losses of, or the right to receive benefits from, the entity that could potentially be significant to the VIE. The Company’s assessment of whether it is the primary beneficiary of a VIE includes consideration of various factors such as: 1) the Company's ability to direct the activities that most significantly impact the entity's economic performance; 2) its form of ownership interest; 3) its representation on the entity's governing body; 4) the size and seniority of its investment; and 5) its ability and the rights of other investors to participate in policy making decisions and to replace the manager of and/or liquidate the entity. The Company is required to evaluate whether to consolidate a VIE both at inception and on an ongoing basis as changes in circumstances require reconsideration.
The Company’s investments in qualified affordable housing and renewable energy projects meet the definition of a VIE as the entities are structured such that the limited partner investors lack substantive voting rights. The general partner or managing member has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. Accordingly, as a limited partner, the Company is not the primary beneficiary and is not required consolidate these entities.
Bank owned life insurance
BOLI is carried at its cash surrender value with changes recorded in other non-interest income in the Consolidated Income Statements. The face amount of the underlying policies including death benefits was $360.0$359.0 million and $360.3$358.7 million as of December 31, 20172019 and 2016,2018, respectively. There are no loans offset against cash surrender values, and there are no restrictions as to the use of proceeds.
Customer repurchase agreements
The Company enters into repurchase agreements with customers, whereby it pledges securities against overnight investments made from the customer’s excess collected funds. The Company records these at the amount of cash received in connection with the transaction.
Stock compensation plans
The Company has the Incentive Plan, as amended, which is described more fully in "Note 10. Stockholders' Equity" of these Notes to Consolidated Financial Statements. Compensation expense for stock options and non-vested restricted stock awards is based on the fair value of the award on the measurement date which, for the Company, is the date of the grant and is recognized ratably over the service period of the award. Forfeitures are estimated at the time of the award grant and revised in subsequent periods if actual forfeitures differ from those estimates. The Company utilizes the Black-Scholes option-pricing model to calculate the fair value of stock options. The fair value of non-vested restricted stock awards is the market price of the Company’s stock on the date of grant.
See "Note 10. Stockholders' Equity" of these Notes to Consolidated Financial Statements for further discussion of stock options and restricted stock awards.

Dividends
WAL is a legal entity separate and distinct from its subsidiaries. As a holding company with limited significant assets other than the capital stock of its subsidiaries, WAL's ability to pay dividends depends primarily upon the receipt of dividends or other capital distributions from its subsidiaries. The Company's subsidiaries' ability to pay dividends to WAL is subject to, among other things, their individual earnings, financial condition, and need for funds, as well as federal and state governmental policies and regulations applicable to WAL and each of those subsidiaries, which limit the amount that may be paid as dividends without prior approval. In addition, the terms and conditions of other securities the Company issues may restrict its ability to pay dividends to holders of the Company's common stock. For example, if any required payments on outstanding trust preferred securities are not made, WAL would be prohibited from paying cash dividends on its common stock.
Treasury Sharesshares
The Company separately presents treasury shares, which represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. Treasury shares are carried at cost.
Common stock repurchases
On December 11, 2018, the Company adopted its common stock repurchase program, pursuant to which the Company was authorized to repurchase up to $250.0 million of its shares of common stock through December 31, 2019. All shares repurchased under the plan are retired upon settlement. The Company has elected the method to allocate the excess of the repurchase price over the par value of its common stock between APIC and retained earnings, with the portion allocated to APIC limited to the amount of APIC that was recorded at the time that the shares were initially issued, which is calculated on a last-in, first-out basis. The Company's common stock repurchase program was renewed through December 2020, authorizing the Company to repurchase up to an additional $250.0 million of its outstanding common stock.
Derivative financial instruments
The Company uses interest-rate swaps to mitigate interest-rate risk associated with changes to 1) the fair value of certain fixed-rate financial instruments (fair value hedges) and 2) certain cash flows related to future interest payments on variable rate financial instruments (cash flow hedges).
The Company recognizes derivatives as assets or liabilities inon the Consolidated Balance Sheet at their fair value in accordance with ASC 815, Derivatives and Hedging. The accounting for changes in the fair value of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. On the date the derivative contract is entered into, the Company designates the derivative as a fair value hedge or cash flow hedge. Derivative instruments designated in a hedge relationship to mitigate exposure to changes in the fair value of an asset or liability attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges.
Changes in the fair value of a derivative that is designated and qualifies as a fair value hedge, along with changes in the fair value of the hedged asset or liability that are attributable to the hedged risk, are recorded in current-period earnings. For a cash flow hedge, the effective portion of the change in the fair value of the derivative is recorded in AOCI and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Any ineffective portion of the change in fair value of a cash flow hedge is recognized immediately in non-interest income in the Consolidated Income Statement. Under both the fair value and cash flow hedge scenarios, changesChanges in the fair value of derivatives not considered to be highly effective in hedging the change in fair value or the expected cash flows of the hedged item are recognized in earnings as non-interest income during the period of the change.

The Company documents its hedge relationships, including identification of the hedging instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transaction at the timeafter the derivative contract is executed. Both atAt inception, and at least quarterly thereafter, the Company assessesperforms a quantitative assessment to determine whether the derivatives used in hedging transactions are highly effective (as defined in the guidance) in offsetting changes in either the fair value or cash flows of the hedged item. Retroactive effectiveness is assessed, as well as the continued expectation that the hedge will remain effective prospectively. After the initial quantitative assessment is performed, on a quarterly basis, the Company performs a qualitative hedge effectiveness assessment. This assessment takes into consideration any adverse developments related to the counterparty's risk of default and any negative events or circumstances that affect the factors that originally enabled the Company to assess that it could reasonably support, qualitatively, an expectation that the hedging relationship was and will continue to be highly effective. The Company discontinues hedge accounting prospectively when it is determined that a hedge is no longer highly effective. When hedge accounting is discontinued on a fair value hedge that no longer qualifies as an effective hedge, the derivative instrument continues to be reported at fair value inon the Consolidated Balance Sheet, but the carrying amount of the hedged item is no longer adjusted for future changes in fair value. The adjustment to the carrying amount of the hedged item that existed at the date hedge accounting is discontinued is amortized over the remaining life of the hedged item into earnings.
Derivative instruments that are not designated as hedges, so called free-standing derivatives, are reported inon the Consolidated Balance Sheet at fair value and the changes in fair value are recognized in earnings as non-interest income during the period of change.

The Company may in the normal course of business purchase a financial instrument or originate a loan that contains an embedded derivative instrument. Upon purchasing the instrument or originating the loan, the Company assesses whether the economic characteristics of the embedded derivative are clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the host contract) and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it is determined that the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract and a separate instrument with the same terms would qualify as a derivative instrument, the embedded derivative is separated from the host contract and carried at fair value. However, in cases where the host contract is measured at fair value, with changes in fair value reported in current earnings, or the Company is unable to reliably identify and measure an embedded derivative for separation from its host contract, the entire contract is carried inon the Consolidated Balance Sheet at fair value and is not designated as a hedging instrument.
Income taxes
The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.
A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.
Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities in the Consolidated Balance Sheet. See "Note 14. Income Taxes" of these Notes to Consolidated Financial Statements for further discussion on income taxes.
The Tax Cuts and Jobs Act, enacted on December 22, 2017, reduced the U.S. federal corporate tax rate from 35 percent to 21 percent. Also on December 22, 2017, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 118, which provides guidance on accounting for tax effects of the Act. Specifically, Staff Accounting Bulletin 118 provides a measurement period of up to one year from the enactment date to revise estimates used to measure the related tax impacts. Based on the information available and current interpretation of the rules, the Company has made reasonable estimates of the impact of the reduction in the corporate tax rate and remeasurement of its deferred tax assets and liabilities. However, the final impact of the Act may differ from these estimates as a result of changes in management's interpretations and assumptions, as well as new guidance that may be issued by the IRS.

Off-balance sheet instruments
In the ordinary course of business, the Company has entered into off-balance sheet financial instrument arrangements consisting of commitments to extend credit and standby letters of credit. Such financial instruments are recorded in the Consolidated Financial Statements when they are funded. They involve, to varying degrees, elements of credit risk in excess of amounts recognized inon the Consolidated Balance Sheet. Losses wouldcould be experienced when the Company is contractually obligated to make a payment under these instruments and must seek repayment from the borrower, which may not be as financially sound in the current period as they were when the commitment was originally made. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract.contract and, in certain instances, may be unconditionally cancelable. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.
As with outstanding loans, the Company applies qualitative factors and utilization rates to its off-balance sheet obligations in determining an estimate of losses inherent in these contractual obligations. The estimate for credit losses on off-balance sheet instruments is included in other liabilities and the charge to income that establishes this liability is included in non-interest expense.
The Company also has off-balance sheet arrangements related to its derivative instruments. Derivative instruments are recognized in the Consolidated Financial Statements at fair value and their notional values are carried off-balance sheet. See "Note 12. Derivatives and Hedging Activities" of these Notes to Consolidated Financial Statements for further discussion.
Business combinations
Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. Under the acquisition method, the acquiring entity in a business combination recognizes all of the acquired assets and assumed liabilities at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including identified intangible assets, exceeds the purchase price, a bargain purchase gain is recognized. Changes to estimated fair values from a business combination are recognized as an adjustment to goodwill during the measurement period and are recognized in the proper reporting period in which the adjustment amounts are determined. Results of operations of an acquired business are included in the Consolidated Income Statement from the date of acquisition. Acquisition-related costs, including conversion and restructuring charges, are expensed as incurred.

Fair values of financial instruments
The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities. ASC 820, Fair Value Measurement, establishes a framework for measuring fair value and a three-level valuation hierarchy for disclosure of fair value measurement, as well as enhances disclosure requirements for fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The Company uses various valuation approaches, including market, income, and/or cost approaches. ASC 820 establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors market participants would consider in pricing the asset or liability developed based on the best information available in the circumstances. The hierarchy is broken down into three levels based on the reliability of inputs, as follows:
Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, prepayment speeds, volatilities, etc.) or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market.
Level 3 - Valuation is generated from model-based techniques where one or more significant inputs are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect the Company’s own estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of matrix pricing, discounted cash flow models, and similar techniques.
The availability of observable inputs varies based on the nature of the specific financial instrument. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Fair value is a market-based measure considered from the perspective of a market participant who may purchase the asset or assume the liability, rather than an entity-specific measure. When market assumptions are available, ASC 820 requires the Company to make assumptions regarding the assumptions that market participants would use to estimate the fair value of the financial instrument at the measurement date.
ASC 825, Financial Instruments, requires disclosure of fair value information about financial instruments, whether or not recognized in the balance sheet, for which it is practicable to estimate that value.
Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent limitations in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction at December 31, 20172019 and 2016.2018. The estimated fair value amounts for December 31, 20172019 and 20162018 have been measured as of period-end, and have not been re-evaluated or updated for purposes of these Consolidated Financial Statements subsequent to those dates. As such, the estimated fair values of these financial instruments subsequent to the reporting date may be different than the amounts reported at period-end.
The information in "Note 16. Fair Value Accounting" inof these Notes to Consolidated Financial Statements should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only required for a limited portion of the Company’s assets and liabilities.
Due to the wide range of valuation techniques and the degree of subjectivity used in making the estimate, comparisons between the Company’s disclosures and those of other companies or banks may not be meaningful.

The following methods and assumptions were used by the Company in estimating the fair value of its financial instruments:
Cash, and cash equivalents, and restricted cash
The carrying amounts reported inon the Consolidated Balance SheetsSheet for cash and due from banks approximate their fair value.
Money market investments
The carrying amounts reported inon the Consolidated Balance SheetsSheet for money market investments approximate their fair value.
Investment securities
The fair values of CRA investments, exchange-listed preferred stock, trust preferred securities, and certain corporate debt securities are based on quoted market prices and are categorized as Level 1 in the fair value hierarchy.
The fair values of other investmentdebt securities wereare primarily determined based on matrix pricing. Matrix pricing is a mathematical technique that utilizes observable market inputs including, for example, yield curves, credit ratings, and prepayment speeds. Fair values determined using matrix pricing are generally categorized as Level 2 in the fair value hierarchy.
During the year ended December 31, 2016, the Company's CDO For a small subset of securities, were transferred from Level 3 to Level 2 as a result of an increase in the availabilityother pricing sources are used, including observed prices on publicly-traded securities and reliability of the observable inputs utilized in the securities' fair value measurement. Previously, quoted prices and quoted prices for similar assets were not available. Therefore, the Company would engage a third party to estimate the future cash flows and discount rate using third party quotes adjusted based on assumptions a market participant would assume necessary for each specific security, which resulted in fair values for these securities being categorized as Level 3 in the fair value hierarchy.dealer quotes.
Restricted stock
WAB is a member of the Federal Reserve System and the FHLB and, accordingly, maintains investments in the capital stock of the FRB and the FHLB. WAB also maintains an investment in its primary correspondent bank. These investments are carried at cost since no ready market exists for them, and they have no quoted market value. The Company conducts a periodic review and evaluation of its restricted stock to determine if any impairment exists. The fair values of these investments have been categorized as Level 2 in the fair value hierarchy.
Loans
The fair value of loans is estimated based on discounted cash flows using interest rates currently being offered for loans with similar terms to borrowers with similar credit quality and adjustments that the Company believes a market participant would consider in determining fair value based on a third party independent valuation. As a result, the fair value for loans is categorized as Level 2 in the fair value hierarchy, excluding impaired loans, which are categorized as Level 3.

Accrued interest receivable and payable
The carrying amounts reported inon the Consolidated Balance SheetsSheet for accrued interest receivable and payable approximate their fair value.
Derivative financial instruments
All derivatives are recognized inon the Consolidated Balance Sheets at their fair value. The fair value for derivatives is determined based on market prices, broker-dealer quotations on similar products, or other related input parameters. As a result, the fair values have been categorized as Level 2 in the fair value hierarchy.
Deposits
The fair value disclosed for demand and savings deposits is by definition equal to the amount payable on demand at their reporting date (that is, their carrying amount), which the Company believes a market participant would consider in determining fair value. The carrying amount for variable-rate deposit accounts approximates their fair value. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on these deposits. The fair value measurement of the deposit liabilities is categorized as Level 2 in the fair value hierarchy.
FHLB advances and customer repurchase agreements
The fair values of the Company’s borrowings are estimated using discounted cash flow analyses, based on the market rates for similar types of borrowing arrangements. The FHLB advances and customer repurchase agreements have been categorized as Level 2 in the fair value hierarchy due to their short durations.

Subordinated debt
The fair value of subordinated debt is based on the market rate for the respective subordinated debt security. Subordinated debt has been categorized as Level 32 in the fair value hierarchy.
Junior subordinated debt
Junior subordinated debt is valued based on a discounted cash flow model which uses as inputs Treasury Bond rates and the 'BB' rated financial index. Junior subordinated debt has been categorized as Level 3 in the fair value hierarchy.
Off-balance sheet instruments
The fair value of the Company’s off-balance sheet instruments (lending commitments and standby letters of credit) is based on quoted fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements, and the counterparties’ credit standing.
Recent accounting pronouncementsIncome taxes
The Company is subject to income taxes in the United States and files a consolidated federal income tax return with all of its subsidiaries, with the exception of BW Real Estate, Inc. Deferred income taxes are recorded to reflect the effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and their income tax bases using enacted tax rates that are expected to be in effect when the taxes are actually paid or recovered. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
Net deferred tax assets are recorded to the extent that these assets will more-likely-than-not be realized. In May 2014,making these determinations, all available positive and negative evidence is considered, including scheduled reversals of deferred tax liabilities, tax planning strategies, projected future taxable income, and recent operating results. If it is determined that deferred income tax assets to be realized in the FASB issued guidance within ASU 2014-09, future are in excess of their net recorded amount, an adjustment to the valuation allowance will be recorded, which will reduce the Company's provision for income taxes.
A tax benefit from an unrecognized tax benefit may be recognized when it is more-likely-than-not that the position will be sustained upon examination, including related appeals or litigation, based on technical merits. Income tax benefits must meet a more-likely-than-not recognition threshold at the effective date to be recognized.
Interest and penalties related to unrecognized tax benefits are recognized as part of the provision for income taxes in the Consolidated Income Statement. Accrued interest and penalties are included in the related tax liability line with other liabilities on the Consolidated Balance Sheets. See "Note 14. Income Taxes" of these Notes to Consolidated Financial Statements for further discussion on income taxes.
Non-interest income
Non-interest income includes service charges and fees, income from equity investments, card income, foreign currency income, income from bank owned life insurance, lending related income, net gain or loss on sales of investment securities, net unrealized gains or losses on assets measured at fair value, and other income. Service charges and fees consist of fees earned from performance of account analysis, general account services, and other deposit account services. These fees are recognized as the related services are provided in accordance with ASC 606, Revenue from Contracts with Customers. The amendments in ASU 2014-09 to Topic 606, RevenueIncome from Contracts with Customers, creates a common revenue standardequity investments includes gains on equity warrant assets, SBIC equity income, and clarifies the principles for recognizing revenue that can be applied consistently across various transactions, industries,success fees. Card income includes fees earned from customer use of debit and capital markets. The amendments in the ASU clarify that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. As part of that principle, the entity should identify the contract(s) with the customer, identify the performance obligation(s) of the contract, determine the transaction price, allocate that transaction price to the performance obligation(s) of the contract,credit cards, interchange income from merchants, and then recognize revenue when or as the entity satisfies the performance obligation(s). In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date, which deferred the original effective date of ASU No. 2014-09 by one year. Accordingly, the amendments in ASU No. 2014-09 will be effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The amendments will be applied through the election of one of two retrospective methods. Substantially all of the Company's revenueinternational charges. Card income is generated from interest income related to loans and investment securities, which are notgenerally within the scope of this guidance. The contracts thatASC 310, Receivables; however, certain processing transactions for merchants, such as interchange fees, are within the scope of this guidance include service chargesASC 606. Foreign currency income represents fees earned on the differential between purchases and feessales of foreign currency on deposit accounts and warrant related income. The Company has completed its review of contracts and other agreements that are within the scope of this guidance and did not identify any material changes to the timing of revenue recognition. The Company will adopt the amendments beginning January 1, 2018 through usebehalf of the modified retrospective transition methodCompany’s clients. Income from bank owned life insurance is accounted for in accordance with ASC 325, Investments - Other. Lending related income includes fees earned from gains or losses on the sale of loans, SBA income, and expectsletter of credit fees. Gains and losses on the sale of loans and SBA income are recognized pursuant to expand its qualitativeASC 860, Transfers and quantitative disclosures of revenue recognition upon adoption.

In January 2016, the FASB issued guidance within ASU 2016-01, Recognition and Measurement of Financial Assets and Financial LiabilitiesServicing. The amendments in ASU 2016-01 to Subtopic 825-10, Financial Instruments, contain the following elements: 1) requires equity investments to beNet unrealized gains or losses on assets measured at fair value withrepresent fair value changes in fair value recognized in net income; 2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) eliminates the requirementsecurities and are accounted for public entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; 4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; 5) requires an entity to present separately in OCI the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with ASC 321, Investments - Equity Securities. Fees related to standby letters of credit are accounted for in accordance with ASC 440, Commitments. Other income includes operating lease income, which is recognized on a straight-line basis over the fair value optionlease term in accordance with ASC 840, Leases. Net gain or loss on sales / valuations of repossessed and other assets is presented as a component of non-interest expense, but may also be presented as a component of non-interest income in the event that a net gain is recognized. Net gain or loss on sales of repossessed and other assets are accounted for financial instruments; 6) requires separate presentationin accordance with ASC 610, Other Income - Gains and Losses from the Derecognition of financial assets and financial liabilities by measurement category and formNonfinancial Assets. See "Note 22. Revenue from Contracts with Customers" of financial asset on the balance sheet or accompanying notesthese Notes to Consolidated Financial Statements for further details related to the financial statements;nature and 7) clarifies that the entity should evaluate the needtiming of revenue recognition for a valuation allowance on a deferred tax asset related to AFS securities in combination with the entity's other deferred tax assets. The amendments are effective for fiscal years beginning after December 15, 2017, and for interim periods within those fiscal years. Except for the early application of the amendment noted in item 5) above, which the Company elected to early adopt effective January 1, 2015 as discussed in the Company's Annual Report on Form 10-K for the year ended December 31, 2015, early adoption of the amendments in this Update is not permitted. As discussed in item 1) above, changes in the fair value of the Company's equity investments, which consist of preferred stock of $53.2 million at December 31, 2017, will be recognized in netnon-interest income rather than in AOCI. As a result, there may be greater volatility in earnings each reporting period related to fair value changes. Upon adoption of this guidance, on January 1, 2018, the Company recorded a cumulative-effect adjustment of $0.4 million to decrease accumulated other comprehensive income with a corresponding increase to opening retained earnings.
In February 2016, the FASB issued guidance within ASU 2016-02, Leases. The amendments in ASU 2016-02 to Topic 842, Leases, require lessees to recognize the lease assets and lease liabilities arising from operating leases in the statement of financial position. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Management is in the early stages of its implementation assessment, which includes identifying the population of the Company's leases that arerevenue streams within the scope of the new guidance, gathering all key lease data, and considering new lease software options that will facilitate application of the newstandard.

Recent accounting requirements.pronouncements
In June 2016, the FASB issued guidance within ASU 2016-13, Measurement of Credit Losses on Financial Instruments. The new standard significantly changes the impairment model for most financial assets that are measured at amortized cost, including off-balance sheet credit exposures, from an incurred loss model to an expected loss model. The amendments in ASU 2016-13 to Topic 326, Financial Instruments - Credit Losses, require that an organization measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU also requires enhanced disclosures, including qualitative and quantitative disclosures that provide additional information about the amounts recorded in the financial statements. Additionally, the ASU amends the accounting for credit losses on AFS debt securities and purchased financial assets with credit deterioration. The amendments in this UpdateASU are effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. EarlyThe Company has completed its implementation of the new CECL standard, in all material respects, as model findings have been addressed, the Company's internal control CECL framework has been implemented, and accounting policies and governance processes have been finalized.
The following table summarizes the estimated allowance for credit losses related to financial assets and off-balance sheet credit exposures upon adoption of ASC 326:
 January 1, 2020
 Pre-ASC 326 Adoption Post-ASC 326 Adoption Impact of ASC 326 Adoption
 (in millions)
Assets:     
Allowance for credit losses on HTM securities     
Tax-exempt$
 $3
 $3
      
Allowance for credit losses on loans$168
 $187
 $19
      
Liabilities:     
Off-balance sheet credit exposures$9
 $24
 $15
As the impact to the Company was not significant, management elected to take the full charge to regulatory capital at the adoption date.
In August 2018, the FASB issued guidance within ASU 2018-13, Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments within ASU 2018-13 remove, modify, and supplement the disclosure requirements for fair value measurements. Disclosure requirements that were removed include: the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, the policy for timing of transfers between levels, and the valuation processes for Level 3 fair value measurements. The amendments clarify that the measurement uncertainty disclosure is permittedto communicate information about the uncertainty in measurement as of the reporting date. Additional disclosure requirements include: the changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period, and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. With the exception of the above additional disclosure requirements, which will be applied prospectively, all other amendments should be applied retrospectively to all periods presented upon their effective date. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, and interim periods within those fiscal years. Management has formed a Steering Committee and established an implementation team made up of subject matter experts across different functions within the Company, including Finance, Risk, Credit, and IT, that will facilitate all phases of planning and implementation of the new guidance. The team is working with certain external consultants and has completed its gap assessment. The team has also made initial decisions related to loan stratification for model selection and development, which is expected to consist of a combination of vendor models and proprietary internally-developed models. Further, the team is in the process of evaluating its control framework to identify risks resulting from new processes, judgments, and data.
In August 2016, the FASB issued guidance within ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. The amendments in ASU 2016-15 to Topic 230, Statement of Cash Flows, provide guidance on eight specific cash flow classification issues: 1) debt prepayment or debt extinguishment costs; 2) settlement of zero-coupon debt instruments; 3) contingent consideration payments made after a business combination; 4) proceeds from the settlement of insurance claims; 5) proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; 6) distributions received from equity method investments; 7) beneficial interest in securitization transactions; and 8) separately identifiable cash flows and the application of the predominance principle. The amendments in this Update are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The amendments in this Update should be applied using a retrospective transition method to each period presented.2019. The adoption of this guidance is not expected to have a significant impact on the Company's Consolidated Statement of Cash Flows.Financial Statements.
In January 2017,August 2018, the FASB issued guidance within ASU 2017-01, Clarifying the Definition of a Business2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40). The amendments in this ASU 2017-01 to Topic 805, Business Combinations, clarifyalign the definition ofrequirements for capitalizing implementation costs incurred in a businesshosting arrangement that is a service contract with the objective of addingrequirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments in this Update require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to assist entities with evaluating whether transactions should be accounted fordetermine which implementation costs to capitalize as acquisitions (or disposals) of assets or businesses.an asset related to the service contract and which costs to expense. The amendments in this Update also require that the capitalized implementation costs of a hosting arrangement that is a service contract be expensed over the term of the hosting arrangement. Presentation requirements include: expense related to the capitalized implementation costs should be presented in the same line item in the statement of income as the fees associated with the hosting element (service) of the arrangement, payments for capitalized implementation costs in the statement of cash flows should be classified in the same manner as payments made for fees associated with the hosting element, and capitalized implementation costs in the statement of financial position should be presented in the same line item that a prepayment for the fees of the associated

hosting arrangement would be presented. The amendments in this ASU should be applied either retrospectively or prospectively andto all implementation costs incurred after the date of adoption. The amendments in this ASU are effective for annual periods beginning after

December 31, 2017, includingfiscal years, and interim periods within those periods.fiscal years, beginning after December 15, 2019. The adoption of this guidance is not expected to have a materialsignificant impact on the Company's Consolidated Financial Statements.
In January 2017,April 2019, the FASB issued guidance within ASU 2017-04, Simplifying the Test for Goodwill Impairment2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments in ASU 2017-042019-04 clarify or correct the guidance in these Topics. With respect to Topic 350, Intangibles - Goodwill and Other, modify the concept326, ASU 2019-04 addresses a number of impairment from the condition that exists when the carrying amount of goodwill exceeds its implied fair valueissues as it relates to the condition that exists whenCECL standard including consideration of accrued interest, recoveries, variable-rate financial instruments, prepayments, and extension and renewal options, among other things, in the carrying amountmeasurement of expected credit losses. The amendments to Topic 326 have the same effective dates as ASU 2016-13 and are not expected to have a reporting unit exceeds its fair value.significant impact on the Company’s Consolidated Financial Statements. With respect to Topic 815, Derivatives and Hedging, ASU 2019-04 clarifies issues related to partial-term hedges, hedged debt securities, and transitioning from a quantitative method of assessing hedge effectiveness to a more simplified method. The Company does not have partial-term hedges or any hedged debt securities and the transition issues discussed in the ASU 2019-04 are not applicable to the Company. Accordingly, the amendments eliminate Step 2 fromto Topic 815 will not have an impact on the goodwill impairment test because goodwill impairment will no longerCompany's Consolidated Financial Statements. With respect to Topic 825, Financial Instruments, on recognizing and measuring financial instruments, ASU 2019-04 addresses: 1) the scope of the guidance; 2) the requirement for remeasurement under ASC 820 when using the measurement alternative; 3) certain disclosure requirements; and 4) which equity securities have to be determined by calculating the implied fair value of goodwill by assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary.remeasured at historical exchange rates. The amendments in this Update should be applied on a prospective basis andto Topic 825 are effective for interim and annual or interim goodwill impairment tests in fiscal yearsreporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed after January 1, 2017. The adoption of this guidance is2019 and are not expected to have a material impact on the Company'sCompany’s Consolidated Financial Statements.
In February 2017,May 2019, the FASB issued guidance within ASU 2017-05, Clarifying2019-05, Financial Instruments - Credit Losses, to provide entities with an option to irrevocably elect the Scopefair value option for eligible financial assets measured at amortized cost. The election is to be applied on an instrument-by-instrument basis upon adoption of Asset Derecognition GuidanceTopic 326 and Accountingis not available for Partial Sales of Nonfinancial Assets.either AFS or HTM debt securities. The amendments in ASU 2017-05 to Subtopic 610-20, Other Income-Gains and Losses from the Derecognition of Nonfinancial Assets, clarify the scope of Subtopic 610-20 and add guidance for partial sales of nonfinancial assets, including partial sales of real estate. Under current GAAP, there are several different accounting models to evaluate whether the transfer of certain assets qualify for sale treatment. The new standard reduces the number of potential accounting models that might apply and clarifies which model does apply in various circumstances. An entity may elect to apply the amendments in this Update either retrospectively to each period presented in the financial statements or, retrospectively with2019-05 should be applied on a modified-retrospective basis through a cumulative-effect adjustment to the opening balance of retained earnings as of the beginningdate that an entity adopts the amendments in ASU 2016-13. The Company did not elect this fair value option as part of its adoption of ASU 2016-13 on January 1, 2020.
In November 2019, the fiscal year of adoption. FASB issued guidance within ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The amendments in this UpdateASU 2019-11 clarify or address specific issues about certain aspects of the amendments in ASU 2016-13, Measurement of Credit Losses on Financial Instruments. These issues include measurement and reporting requirements related to: 1) the allowance for credit losses for purchased assets with credit deterioration; 2) prepayment assumptions on existing troubled debt restructurings; 3) extension of disclosure relief for accrued interest receivable balances; and 4) expected credit losses on collateralized financial assets. The adoption of ASU 2019-11 is concurrent with ASU 2016-13 and, adoption of these amendments on January 1, 2020, did not have a significant impact on the Company's Consolidated Financial Statements.
In December 2019, the FASB issued guidance within ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in ASU 2019-12 are intended to reduce the cost and complexity of applying ASC 740. The amendments that are applicable to the Company address: 1) franchise and other taxes partially based on income; 2) step-up in basis of goodwill in a business combination; 3) allocation of tax expense in separate entity financial statements; and 4) interim recognition of enactment of tax laws or rate changes. The amendments to Topic 740 are effective for interim and annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted for annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The adoption of this guidance is2020 and are not expected to have a material impact on the Company'sCompany’s Consolidated Financial Statements.
Recently adopted accounting guidance
In February 2016, the FASB issued guidance within ASU 2016-02, Leases. The amendments in ASU 2016-02 to Topic 842, Leases, require lessees to recognize the lease assets and lease liabilities arising from operating leases in the statement of financial position. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. The Company adopted the amendments to Topic 842 on January 1, 2019 using the modified retrospective approach. The Company elected the transition option issued under ASU 2018-11, Leases (Topic 842) Targeted Improvements, which allows entities to continue to apply the legacy guidance in ASC 840, Leases, to prior periods, including disclosure requirements. Accordingly, prior period financial results and disclosures have not been adjusted. The Company also elected to apply the package of practical expedients permitting entities to forgo reassessment of: 1) expired or existing contracts that may contain leases; 2) lease classification of expired or existing leases; and 3) initial direct costs for any existing leases. The Company established internal controls and implemented lease accounting software to facilitate the preparation of financial information and disclosures related to leases. The most significant impact of the new standard on the Company’s Consolidated Financial Statements was the recognition of a ROU asset and lease liability for operating leases for which the Company is the lessee. The accounting for finance and operating leases for which the Company is the lessor remains substantially unchanged. Upon adoption of this guidance on January 1, 2019, the Company recorded

a ROU asset and corresponding lease liability of $42.5 million and $46.1 million, respectively, on the Consolidated Balance Sheet. No cumulative effect adjustment to retained earnings resulted from adoption of this guidance. The new standard did not have a material impact on the Company’s results of operations or cash flows.
In March 2017, the FASB issued guidance within ASU 2017-08, Premium Amortization on Purchased Callable Debt Securities. The amendments in ASU 2017-08 to Subtopic 310-20, Receivables-Nonrefundable Fees and Other Costs, shorten the amortization period for certain purchased callable debt securities held at a premium to the earliest call date, which more closely align the amortization period of premiums and discounts to expectations incorporated in market pricing on the underlying securities. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this UpdateASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning afterAs of December 15, 2018. Early adoption is permitted, including adoption in an interim period. The31, 2019, the Company does not hold these types of securities; therefore, adoption of this guidance isdid not expected to have a materialan impact on the Company's Consolidated Financial Statements.
In May 2017, the FASB issued guidance within ASU 2017-09, Scope of Modification Accounting. The amendments in ASU 2017-09 to Topic 718, Compensation - Stock Compensation, provide guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. An entity should account for the effects of a modification unless all of the following conditions are met: the fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified; the vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified; and the classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. The amendments in this Update should be applied prospectively to an award modified on or after the adoption date. The amendments in this Update are effective for annual periods, and interim periods within those annual periods, beginning after December 31, 2017. Early adoption is permitted, including adoption in any interim period. The adoption of this guidance is not expected to have a material impact on the Company's Consolidated Financial Statements.
In FebruaryJune 2018, the FASB issued guidance within ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Under current GAAP, the effect of a change in tax laws or rates on deferred tax liabilities and assets are included in income from continuing operations even in situations in which the related income tax effects of items in AOCI were originally recognized in comprehensive income. Accordingly, as the adjustment of deferred taxes due2018-07, Improvements to the reduction of the historical corporate income tax rate to the newly enacted corporate income tax rate is required to be included in income from continuing operations, the tax effects of items within AOCI do not reflect the current tax rate. The amendments in ASU 2018-02 to Topic 220, Income Statement - Reporting Comprehensive Income, allow a reclassification from AOCI to

retained earnings from tax effects resulting from the Tax Cuts and Jobs Act. The amendments in this Update can be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted, including adoption in any interim period. If the Company elects to reclassify the income tax effects of the Tax Cuts and Jobs Act, AOCI would increase by approximately $1.0 million with a corresponding decrease to retained earnings. However, management is still in the process of evaluating the full effects that this Update is expected to have on the Company's Consolidated Financial Statements and related disclosures.
Recently adopted accounting guidance
In November 2015, the FASB issued guidance within ASU 2015-17, Income TaxesNonemployee Share-Based Payment Accounting. The amendments in ASU 2015-172018-07 to Topic 740, Income Taxes, changes718, Compensation-Stock Compensation, are intended to align the presentation of deferred income tax liabilitiesaccounting for share-based payment awards issued to employees and assets, from previously bifurcated current and noncurrent,nonemployees. Changes to a single noncurrent amountthe accounting for nonemployee awards include: 1) equity classified share-based payment awards issued to nonemployees will now be measured on the classified statementgrant date, instead of financial position.the previous requirement to remeasure the awards through the performance completion date; 2) for performance conditions, compensation cost associated with the award will be recognized when achievement of the performance condition is probable, rather than upon achievement of the performance condition; and 3) the current requirement to reassess the classification (equity or liability) for nonemployee awards upon vesting will be eliminated, except for awards in the form of convertible instruments. The amendment was effectivenew guidance also clarifies that any share-based payment awards issued to customers should be evaluated under ASC 606, Revenue from Contracts with Customers. The Company's share-based payment awards to nonemployees consist only of grants made to the Company's BOD as compensation solely related to the individual's role as a Director. As such, in accordance with ASC 718, the Company accounts for these share-based payment awards to its Directors in the annual period ending after December 15, 2016, andsame manner as share-based payment awards for and interim periods within those annual periods. Theits employees. Accordingly, the adoption of this guidance did not have a materialan impact on the accounting for the Company's Consolidated Financial Statements.share-based payment awards to its Directors.
In March 2016,July 2018, the FASB issued guidance within ASU 2016-05, Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships2018-09, Codification Improvements. The amendments in ASU 2016-052018-09 are intended to Topic 815, Derivatives and Hedging, clarify that a changeor correct unintended guidance in the counterpartyFASB Codification and affect a wide variety of Topics in the Codification. The topics that are applicable to a derivative instrumentthe Company include: 1) debt modifications and extinguishments; 2) stock compensation; and 3) derivatives and hedging. For debt modifications and extinguishments, the amendment clarifies that, in an early extinguishment of debt for which the fair value option has been designated aselected, the hedging instrument under Topic 815 does not,net carrying amount of the extinguished debt is equal to its fair value at the reacquisition date, and upon extinguishment, the cumulative amount of the gain or loss on the extinguished debt that resulted from changes in andinstrument-specific credit risk should be presented in net income. The Company has junior subordinated debt that is recorded at fair value at each reporting period due to election of itself, require dedesignationthe FVO. Accordingly, if, in the future, the Company chooses to repay this debt prior to its contractual maturity, this amendment would be applicable. For stock compensation, the amendment clarifies that excess tax benefits or tax deficiencies should be recognized in the period in which the amount of that hedging relationship provided that all other hedge accounting criteria continue to be met.the tax deduction is determined, which is typically when an award is exercised (in the case of share options) or vests (in the case of non-vested stock awards). The amendmentsCompany already records excess tax benefits or tax deficiencies in this Update were effective for financial statements issued for fiscal years beginning after December 15, 2016, and interimthe periods within those fiscal years. Thein which the tax deduction is determined. Therefore, adoption of this guidanceamendment did not have a material impactan effect on the Company's Consolidated Financial Statements.
In August 2017,accounting for excess tax benefits or tax deficiencies. For derivatives and hedging, previous guidance permits derivatives to be offset only when all four conditions (including the FASB issued guidance within ASU 2017-12, Targeted Improvementsintent to Accountingset off) are met. This amendment clarifies that the intent to set off is not required to offset fair value amounts recognized for Hedging Activities. The amendments in ASU 2017-12 to Topic 815, Derivatives and Hedging, is intended to more closely align hedge accountingderivative instruments that are executed with companies' risk management strategies, simplify the application of hedge accounting, and increase transparency as tosame counterparty under a master netting agreement. This amendment did not have an effect on the scope and results of hedging programs. The guidance also amends the presentation and disclosure requirements and changes how companies assess effectiveness. Under the new guidance, public companies will have until the endoffsetting of the first quarter in which a hedge is designated to perform an initial assessment of a hedge's effectiveness. After initial qualification, the new guidance permits a qualitative effectiveness assessment for certain hedges instead of a quantitative test if the company can reasonably support an expectation of high effectiveness throughout the term of the hedge. Additional disclosures include cumulative basis adjustments for fair value hedgesCompany's derivative assets and the effect of hedging on individual income statement line items. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim period within those fiscal years. Early adoption is permitted in any interim period after issuance of the Update. Effective January 1, 2017, the Company elected early adoption of the amended guidance within ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities. As a result of adoption, the Company recognized a cumulative adjustment to increase retained earnings by $0.5 million as of January 1, 2017 and adjusted its 2017 earnings to exclude the effects of prior period hedge ineffectiveness, which totaled less than $0.1 million for 2017. See "Note 12. Derivatives and Hedging Activities " to the Consolidated Financial Statements for additional detail and amended disclosures from adoption of this new accounting guidance.liabilities.




2. INVESTMENT SECURITIES
The carrying amounts and fair values of investment securities at December 31, 20172019 and 20162018 are summarized as follows: 
  December 31, 2019
  Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
  (in thousands)
Held-to-maturity        
Tax-exempt $485,107
 $31,303
 $(149) $516,261
         
Available-for-sale debt securities        
CDO $50
 $10,092
 $
 $10,142
Commercial MBS issued by GSEs 95,062
 366
 (1,175) 94,253
Corporate debt securities 105,015
 112
 (5,166) 99,961
Municipal securities 7,494
 279
 
 7,773
Private label residential MBS 1,129,985
 3,572
 (4,330) 1,129,227
Residential MBS issued by GSEs 1,406,594
 9,283
 (3,817) 1,412,060
Tax-exempt 530,729
 24,548
 (422) 554,855
Trust preferred securities 32,000
 
 (4,960) 27,040
U.S. government sponsored agency securities 10,000
 
 
 10,000
U.S. treasury securities 999
 
 
 999
Total AFS debt securities $3,317,928
 $48,252
 $(19,870) $3,346,310
         
Equity securities        
CRA investments $52,805
 $
 $(301) $52,504
Preferred stock 82,514
 3,881
 (198) 86,197
Total equity securities $135,319
 $3,881
 $(499) $138,701
  December 31, 2017
  Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
  (in thousands)
Held-to-maturity        
Tax-exempt $255,050
 $4,514
 $(3,250) $256,314
         
Available-for-sale        
CDO $50
 $21,807
 $
 $21,857
Commercial MBS issued by GSEs 113,069
 46
 (4,038) 109,077
Corporate debt securities 105,044
 261
 (1,822) 103,483
CRA investments 51,133
 
 (517) 50,616
Preferred stock 52,172
 1,160
 (136) 53,196
Private label residential MBS 874,261
 756
 (6,493) 868,524
Residential MBS issued by GSEs 1,719,188
 810
 (30,703) 1,689,295
Tax-exempt 501,988
 10,893
 (1,971) 510,910
Trust preferred securities 32,000
 
 (3,383) 28,617
U.S. government sponsored agency securities 64,000
 
 (2,538) 61,462
U.S. treasury securities 2,496
 
 (14) 2,482
Total AFS securities $3,515,401
 $35,733
 $(51,615) $3,499,519

  December 31, 2018
  Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
  (in thousands)
Held-to-maturity        
Tax-exempt $302,905
 $3,163
 $(7,420) $298,648
         
Available-for-sale debt securities        
CDO $50
 $15,277
 $
 $15,327
Commercial MBS issued by GSEs 106,385
 82
 (6,361) 100,106
Corporate debt securities 105,029
 
 (5,649) 99,380
Private label residential MBS 948,161
 945
 (24,512) 924,594
Residential MBS issued by GSEs 1,564,181
 1,415
 (35,472) 1,530,124
Tax-exempt 542,086
 4,335
 (7,753) 538,668
Trust preferred securities 32,000
 
 (3,383) 28,617
U.S. government sponsored agency securities 40,000
 
 (1,812) 38,188
U.S. treasury securities 1,996
 
 (12) 1,984
Total AFS debt securities $3,339,888
 $22,054
 $(84,954) $3,276,988
         
Equity securities        
CRA investments $52,210
 $
 $(1,068) $51,142
Preferred stock 65,954
 148
 (2,183) 63,919
Total equity securities $118,164
 $148
 $(3,251) $115,061
  December 31, 2016
  Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value
  (in thousands)
Held-to-maturity        
Tax-exempt $92,079
 $433
 $(546) $91,966
         
Available-for-sale        
CDO $50
 $13,440
 $
 $13,490
Commercial MBS issued by GSEs 121,742
 
 (3,950) 117,792
Corporate debt securities 65,058
 371
 (1,285) 64,144
CRA investments 37,627
 
 (514) 37,113
Preferred stock 96,071
 833
 (2,242) 94,662
Private label residential MBS 440,272
 182
 (6,769) 433,685
Residential MBS issued by GSEs 1,369,289
 3,046
 (17,130) 1,355,205
Tax-exempt 409,693
 8,477
 (9,937) 408,233
Trust preferred securities 32,000
 
 (5,468) 26,532
U.S. government sponsored agency securities 59,000
 
 (2,978) 56,022
U.S. treasury securities 2,496
 6
 
 2,502
Total AFS securities $2,633,298
 $26,355
 $(50,273) $2,609,380
         
Securities measured at fair value        
Residential MBS issued by GSEs       $1,053
During the year ended December 31, 2017, the Company sold all of its investment securities measured at fair value. No significant gain or loss was recognized upon sale of these securities. For additional information on the fair value changes of securities measured at fair value, see the trading securities table in "Note 16. Fair Value Accounting" of these Notes to Consolidated Financial Statements.

The Company conducts an OTTI analysis on a quarterly basis. The initial indication of OTTI for both debt and equity securities is a decline in the market value below the amount recorded for an investment, and taking into account the severity and duration of the decline. Another potential indication of OTTI is a downgrade below investment grade. In determining whether an impairment is OTTI, the Company considers the length of time and the extent to which the market value has been below cost, recent events specific to the issuer, including investment downgrades by rating agencies and economic conditions of its industry, and the Company’s ability and intent to hold the investment for a period of time sufficient to allow for any anticipated recovery. For marketable equity securities, the Company also considers the issuer’s financial condition, capital strength, and near-term prospects.
For debt securities, for the purpose of an OTTI analysis, the Company also considers the cause of the price decline (general level of interest rates, credit spreads, and industry and issuer-specific factors), whether downgrades by bond rating agencies have occurred, the issuer’s financial condition, near-term prospects, and current ability to make future payments in a timely manner, as well as the issuer’s ability to service debt, and any change in agencies’ ratings at the evaluation date from the acquisition date and any likely imminent action.
At December 31, 2019 and 2018, the Company’s unrealized losses relate primarily to market interest rate increases since the securities' original purchase date. The total number of AFS securities in an unrealized loss position at December 31, 2019 is 158, compared to 373 at December 31, 2018. The Company has reviewed securities for which there is an unrealized loss in accordance with its accounting policy for OTTI described above and determined that there are no0 impairment charges for the years ended December 31, 2017, 2016,2019, 2018, and 2015.2017. The Company does not consider any securities to be other-than-temporarily impaired as of December 31, 20172019 and 2016.2018. No assurance can be made that OTTI will not occur in future periods.
Information pertaining to securities with gross unrealized losses at December 31, 20172019 and 2016,2018, aggregated by investment category and length of time that individual securities have been in a continuous loss position follows: 
December 31, 2017December 31, 2019
Less Than Twelve Months More Than Twelve Months TotalLess Than Twelve Months More Than Twelve Months Total
Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair ValueGross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
(in thousands)(in thousands)
Held-to-maturity                      
Tax-exempt$3,250
 $107,921
 $
 $
 $3,250
 $107,921
$149
 $24,325
 $
 $
 $149
 $24,325
Available-for-sale           
           
Available-for-sale debt securities           
Commercial MBS issued by GSEs$161
 $13,565
 $3,877
 $93,641
 $4,038
 $107,206
$85
 $9,035
 $1,090
 $54,604
 $1,175
 $63,639
Corporate debt securities1,398
 78,602
 424
 19,576
 1,822
 98,178

 
 5,166
 94,834
 5,166
 94,834
CRA investments
 
 517
 50,616
 517
 50,616
Preferred stock136
 7,357
 
 
 136
 7,357
Private label residential MBS3,115
 480,885
 3,378
 188,710
 6,493
 669,595
1,776
 337,285
 2,554
 258,791
 4,330
 596,076
Residential MBS issued by GSEs13,875
 999,478
 16,828
 523,270
 30,703
 1,522,748
1,740
 385,643
 2,077
 150,419
 3,817
 536,062
Tax-exempt17
 6,159
 1,954
 69,674
 1,971
 75,833
422
 67,150
 
 
 422
 67,150
Trust preferred securities
 
 3,383
 28,617
 3,383
 28,617

 
 4,960
 27,040
 4,960
 27,040
U.S. government sponsored agency securities14
 4,986
 2,524
 56,476
 2,538
 61,462
U.S. treasury securities14
 2,482
 
 
 14
 2,482
Total AFS securities$18,730
 $1,593,514
 $32,885
 $1,030,580
 $51,615
 $2,624,094
$4,023
 $799,113
 $15,847
 $585,688
 $19,870
 $1,384,801

 December 31, 2018
 Less Than Twelve Months More Than Twelve Months Total
 Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
 (in thousands)
Held-to-maturity debt securities           
Tax-exempt$3,868
 $91,095
 $3,552
 $69,991
 $7,420
 $161,086
            
Available-for-sale debt securities           
Commercial MBS issued by GSEs$
 $
 $6,361
 $98,275
 $6,361
 $98,275
Corporate debt securities16
 5,013
 5,633
 94,367
 5,649
 99,380
Private label residential MBS5,173
 217,982
 19,339
 537,316
 24,512
 755,298
Residential MBS issued by GSEs1,363
 141,493
 34,109
 1,215,490
 35,472
 1,356,983
Tax-exempt3,562
 209,767
 4,191
 72,382
 7,753
 282,149
Trust preferred securities
 
 3,383
 28,617
 3,383
 28,617
U.S. government sponsored agency securities
 
 1,812
 38,188
 1,812
 38,188
U.S. treasury securities
 
 12
 1,984
 12
 1,984
Total AFS securities$10,114
 $574,255
 $74,840
 $2,086,619
 $84,954
 $2,660,874
 December 31, 2016
 Less Than Twelve Months More Than Twelve Months Total
 Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value
 (in thousands)
Held-to-maturity           
Tax-exempt$546
 $30,364
 $
 $
 $546
 $30,364
            
Available-for-sale           
Commercial MBS issued by GSEs$3,950
 $117,792
 $
 $
 $3,950
 $117,792
Corporate debt securities1,285
 38,716
 
 
 1,285
 38,716
CRA investments514
 37,113
 
 
 514
 37,113
Preferred stock2,188
 63,151
 54
 1,471
 2,242
 64,622
Private label residential MBS6,170
 377,638
 599
 16,969
 6,769
 394,607
Residential MBS issued by GSEs16,990
 950,480
 140
 5,326
 17,130
 955,806
Tax-exempt9,937
 148,780
 
 
 9,937
 148,780
Trust preferred securities
 
 5,468
 26,532
 5,468
 26,532
U.S. government sponsored agency securities2,978
 56,022
 
 
 2,978
 56,022
Total AFS securities$44,012
 $1,789,692
 $6,261
 $50,298
 $50,273
 $1,839,990
At December 31, 2017 and 2016, the Company’s unrealized losses relate primarily to market interest rate increases since the securities' original purchase date. The total number of securities in an unrealized loss position at December 31, 2017 is 302, compared to 244 at December 31, 2016. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and industry analysis reports. Since material downgrades have not occurred and management does not intend to sell the debt securities in an unrealized loss position in the foreseeable future, none of the securities described in the above table or in this paragraph are deemed to be OTTI.
The amortized cost and fair value of securities as of December 31, 2017,2019, by contractual maturities, are shown below. MBS are shown separately as individual MBS are comprised of pools of loans with varying maturities. Therefore, these securities are listed separately in the maturity summary.
 December 31, 2017 December 31, 2019
 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value
 (in thousands) (in thousands)
Held-to-maturity        
Due in one year or less $7,330
 $7,384
After one year through five years $11,300
 $11,377
 17,414
 17,947
After five years through ten years 14,979
 14,860
After ten years 228,771
 230,077
 460,363
 490,930
Total HTM securities $255,050
 $256,314
 $485,107
 $516,261
        
Available-for-sale        
Due in one year or less $54,175
 $53,679
 $999
 $999
After one year through five years 16,992
 17,464
 14,765
 14,971
After five years through ten years 257,495
 256,147
 149,236
 144,996
After ten years 480,220
 505,335
 521,287
 549,804
Mortgage-backed securities 2,706,519
 2,666,894
 2,631,641
 2,635,540
Total AFS securities $3,515,401
 $3,499,519
 $3,317,928
 $3,346,310

The following tables summarize the carrying amount of the Company’s investment ratings position as of December 31, 20172019 and 2016: 2018:
  December 31, 2019
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity debt securities                
Tax-exempt $
 $
 $
 $
 $
 $
 $485,107
 $485,107
                 
Available-for-sale debt securities                
CDO $
 $
 $
 $
 $
 $10,142
 $
 $10,142
Commercial MBS issued by GSEs 
 94,253
 
 
 
 
 
 94,253
Corporate debt securities 
 
 
 66,530
 33,431
 
 
 99,961
Municipal securities 
 
 
 
 
 
 7,773
 7,773
Private label residential MBS 1,096,909
 
 30,675
 181
 288
 1,174
 
 1,129,227
Residential MBS issued by GSEs 
 1,412,060
 
 
 
 
 
 1,412,060
Tax-exempt 52,610
 2,856
 327,657
 171,732
 
 
 
 554,855
Trust preferred securities 
 
 
 
 27,040
 
 
 27,040
U.S. government sponsored agency securities 
 10,000
 
 
 
 
 
 10,000
U.S. treasury securities 
 999
 
 
 
 
 
 999
Total AFS securities (1) $1,149,519
 $1,520,168
 $358,332
 $238,443
 $60,759
 $11,316
 $7,773
 $3,346,310
                 
Equity securities                
CRA investments $
 $25,375
 $
 $
 $
 $
 $27,129
 $52,504
Preferred stock 
 
 
 
 82,851
 2,105
 1,241
 86,197
Total equity securities (1) $
 $25,375
 $
 $
 $82,851
 $2,105
 $28,370
 $138,701
  December 31, 2017
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity                
Tax-exempt $
 $
 $
 $
 $
 $
 $255,050
 $255,050
                 
Available-for-sale                
CDO $
 $
 $
 $
 $
 $21,857
 $
 $21,857
Commercial MBS issued by GSEs 
 109,077
 
 
 
 
 
 109,077
Corporate debt securities 
 
 
 74,293
 29,190
 
 
 103,483
CRA investments 
 25,349
 
 
 
 
 25,267
 50,616
Preferred stock 
 
 
 10,388
 23,822
 4,104
 14,882
 53,196
Private label residential MBS 809,242
 
 55,161
 1,350
 931
 1,840
 
 868,524
Residential MBS issued by GSEs 
 1,689,295
 
 
 
 
 
 1,689,295
Tax-exempt 64,893
 25,280
 249,200
 167,994
 
 
 3,543
 510,910
Trust preferred securities 
 
 
 
 28,617
 
 
 28,617
U.S. government sponsored agency securities 
 61,462
 
 
 
 
 
 61,462
U.S. treasury securities 
 2,482
 
 
 
 
 
 2,482
Total AFS securities (1) $874,135
 $1,912,945

$304,361

$254,025

$82,560

$27,801

$43,692

$3,499,519

(1)Where ratings differ, the Company uses an average of the available ratings by S&P, Moody’s, and/or Fitch.major credit agencies.
  December 31, 2018
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity debt securities                
Tax-exempt $
 $
 $
 $
 $
 $
 $302,905
 $302,905
                 
Available-for-sale debt securities                
CDO $
 $
 $
 $
 $
 $15,327
 $
 $15,327
Commercial MBS issued by GSEs 
 100,106
 
 
 
 
 
 100,106
Corporate debt securities 
 
 
 66,515
 32,865
 
 
 99,380
Private label residential MBS 887,520
 
 34,342
 343
 947
 1,442
 
 924,594
Residential MBS issued by GSEs 
 1,530,124
 
 
 
 
 
 1,530,124
Tax-exempt 66,160
 12,146
 306,409
 152,330
 
 
 1,623
 538,668
Trust preferred securities 
 
 
 
 28,617
 
 
 28,617
U.S. government sponsored agency securities 
 38,188
 
 
 
 
 
 38,188
U.S. treasury securities 
 1,984
 
 
 
 
 
 1,984
Total AFS securities (1) $953,680
 $1,682,548
 $340,751
 $219,188
 $62,429
 $16,769
 $1,623
 $3,276,988
                 
Equity securities                
CRA investments $
 $25,375
 $
 $
 $
 $
 $25,767
 $51,142
Preferred stock 
 
 
 
 45,771
 3,693
 14,455
 63,919
Total equity securities (1) $
 $25,375
 $
 $
 $45,771
 $3,693
 $40,222
 $115,061
  December 31, 2016
  AAA Split-rated AAA/AA+ AA+ to AA- A+ to A- BBB+ to BBB- BB+ and below Unrated Totals
  (in thousands)
Held-to-maturity                
Tax-exempt $
 $
 $
 $
 $
 $
 $92,079
 $92,079
                 
Available-for-sale                
CDO $
 $
 $
 $
 $
 $13,490
 $
 $13,490
Commercial MBS issued by GSEs 
 117,792
 
 
 
 
 
 117,792
Corporate debt securities 
 
 5,429
 38,715
 20,000
 
 
 64,144
CRA investments 
 
 
 
 
 
 37,113
 37,113
Preferred stock 
 
 
 
 64,486
 14,658
 15,518
 94,662
Private label residential MBS 399,013
 
 29,921
 2,117
 2,634
 
 
 433,685
Residential MBS issued by GSEs 
 1,355,205
 
 
 
 
 
 1,355,205
Tax-exempt 80,862
 
 268,249
 59,122
 
 
 
 408,233
Trust preferred securities 
 
 
 
 26,532
 
 
 26,532
U.S. government sponsored agency securities 
 56,022
 
 
 
 
 
 56,022
U.S. treasury securities 
 2,502
 
 
 
 
 
 2,502
Total AFS securities (1) $479,875

$1,531,521

$303,599

$99,954

$113,652

$28,148
 $52,631
 $2,609,380
                 
Securities measured at fair value                
Residential MBS issued by GSEs $
 $1,053
 $
 $
 $
 $
 $
 $1,053

(1)Where ratings differ, the Company uses an average of the available ratings by S&P, Moody’s, and/or Fitch.major credit agencies.

Securities with carrying amounts of approximately $913.7$962.5 million and $763.0$788.4 million at December 31, 20172019 and 2016,2018, respectively, were pledged for various purposes as required or permitted by law.
The following table presents gross gains and losses on sales of investment securities: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Available-for-sale securities      
Gross gains $3,152
 $8,074
 $3,204
Gross losses 
 (7,738) (861)
Net gains (losses) on AFS securities $3,152
 $336
 $2,343
       
Equity securities      
Gross gains $
 $
 $
Gross losses 
 (7,992) 
Net gains (losses) on equity securities $
 $(7,992) $

  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Gross gains $3,204
 $2,115
 $1,144
Gross losses (861) (1,056) (529)
Net gains on sales of investment securities $2,343
 $1,059
 $615
During the year ended December 31, 2019, the Company sold certain AFS securities as part of a portfolio re-balancing initiative. These securities had a carrying value of $147.2 million and a net gain of $3.2 million was recognized on the sale of these securities. During the year ended December 31, 2019, the Company also sold one of its securities classified as HTM. The security had a par value of $10.0 million and no gain or loss was realized upon the sale. The sale of this HTM security was made as a result of significant deterioration in the issuer’s creditworthiness, representative of a change in circumstance contemplated in ASC 320-10-25 that would not call into question the Company’s intent to hold other debt securities to maturity in the future. Accordingly, management concluded that the Company’s remaining HTM securities continue to be appropriately classified as such.
During the year ended December 31, 2018, the Company sold certain available-for-sale securities with a carrying value of $119.8 million and recognized a loss on sale of these securities of $7.7 million. The sales resulted from management’s review of its investment portfolio, which led to its decision to sell lower yielding securities and reinvest in securities with higher yields and shorter durations.

3. LOANS, LEASES AND ALLOWANCE FOR CREDIT LOSSES
The composition of the Company’s held for investment loan portfolio is as follows:
  December 31,
  2019 2018
  (in thousands)
Commercial and industrial $9,382,043
 $7,762,642
Commercial real estate - non-owner occupied 5,245,634
 4,213,428
Commercial real estate - owner occupied 2,316,913
 2,325,380
Construction and land development 1,952,156
 2,134,753
Residential real estate 2,147,664
 1,204,355
Consumer 57,083
 70,071
Loans, net of deferred loan fees and costs 21,101,493
 17,710,629
Allowance for credit losses (167,797) (152,717)
Total loans HFI $20,933,696
 $17,557,912

  December 31,
  2017 2016
  (in thousands)
Commercial and industrial $6,841,381
 $5,855,786
Commercial real estate - non-owner occupied 3,904,011
 3,543,956
Commercial real estate - owner occupied 2,241,613
 2,013,276
Construction and land development 1,632,204
 1,478,114
Residential real estate 425,940
 259,432
Consumer 48,786
 38,963
Loans, net of deferred loan fees and costs 15,093,935
 13,189,527
Allowance for credit losses (140,050) (124,704)
Total loans HFI $14,953,885
 $13,064,823
Loans that are held for investment are stated at the amount of unpaid principal, adjusted for net deferred fees and costs, premiums and discounts, purchase accounting fair value adjustments, and an allowance for credit losses. Net deferred loan fees and costs as of December 31, 20172019 and 20162018 total $25.3$47.7 million and $22.3$36.3 million, respectively, which is a reduction in the carrying value of loans. Net unamortized purchase discountspremiums on secondary market loan purchases total $8.5$29.9 million and $5.2$2.0 million as of December 31, 20172019 and 2016,2018, respectively. Total loans held for investment are also net of interest rate and credit marks on acquired loans, which are a net reduction in the carrying value of loans. Interest rate marks were $14.1$3.8 million and $22.2$7.1 million as of December 31, 20172019 and 2016,2018, respectively. Credit marks were $27.0$6.5 million and $47.3$14.6 million as of December 31, 20172019 and 2016,2018, respectively.
TheAs of December 31, 2019, the Company also had no$21.8 million of HFS loans. There were 0 HFS loans as of December 31, 2017 and $18.9 million of HFS loans as of December 31, 2016.2018.
The following table presents the contractual aging of the recorded investment in past due loans held for investment by class of loans:
  December 31, 2019
  Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 Days Past Due Total
Past Due
 Total
  (in thousands)
Commercial and industrial $9,376,377
 $2,501
 $637
 $2,528
 $5,666
 $9,382,043
Commercial real estate            
Owner occupied 2,316,165
 624
 
 124
 748
 2,316,913
Non-owner occupied 5,007,644
 4,661
 
 11,913
 16,574
 5,024,218
Multi-family 221,416
 
 
 
 
 221,416
Construction and land development            
Construction 1,176,908
 
 
 
 
 1,176,908
Land 775,248
 
 
 
 
 775,248
Residential real estate 2,134,346
 7,627
 1,721
 3,970
 13,318
 2,147,664
Consumer 57,083
 
 
 
 
 57,083
Total loans $21,065,187
 $15,413
 $2,358
 $18,535
 $36,306
 $21,101,493
  December 31, 2017
  Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 Days Past Due Total
Past Due
 Total
  (in thousands)
Commercial and industrial $6,835,385
 $2,245
 $669
 $3,082
 $5,996
 $6,841,381
Commercial real estate            
Owner occupied 2,240,457
 1,026
 
 130
 1,156
 2,241,613
Non-owner occupied 3,696,729
 2,993
 
 2,847
 5,840
 3,702,569
Multi-family 201,442
 
 
 
 
 201,442
Construction and land development            
Construction 1,090,176
 
 
 
 
 1,090,176
Land 536,917
 
 
 5,111
 5,111
 542,028
Residential real estate 411,857
 6,874
 1,487
 5,722
 14,083
 425,940
Consumer 48,408
 83
 213
 82
 378
 48,786
Total loans $15,061,371
 $13,221
 $2,369
 $16,974
 $32,564
 $15,093,935

  December 31, 2018
  Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 days
Past Due
 Total
Past Due
 Total
  (in thousands)
Commercial and industrial $7,753,111
 $3,187
 $416
 $5,928
 $9,531
 $7,762,642
Commercial real estate            
Owner occupied 2,320,321
 4,441
 
 618
 5,059
 2,325,380
Non-owner occupied 4,051,837
 
 
 
 
 4,051,837
Multi-family 161,591
 
 
 
 
 161,591
Construction and land development            
Construction 1,382,664
 
 
 
 
 1,382,664
Land 751,613
 
 476
 
 476
 752,089
Residential real estate 1,182,933
 9,316
 4,010
 8,096
 21,422
 1,204,355
Consumer 69,830
 
 
 241
 241
 70,071
Total loans $17,673,900
 $16,944
 $4,902
 $14,883
 $36,729
 $17,710,629
  December 31, 2016
  Current 30-59 Days
Past Due
 60-89 Days
Past Due
 Over 90 days
Past Due
 Total
Past Due
 Total
  (in thousands)
Commercial and industrial $5,848,129
 $549
 $584
 $6,524
 $7,657
 $5,855,786
Commercial real estate            
Owner occupied 2,009,728
 71
 
 3,477
 3,548
 2,013,276
Non-owner occupied 3,339,121
 672
 2
 
 674
 3,339,795
Multi-family 204,161
 
 
 
 
 204,161
Construction and land development            
Construction 973,242
 
 
 
 
 973,242
Land 503,588
 
 
 1,284
 1,284
 504,872
Residential real estate 249,726
 4,333
 281
 5,092
 9,706
 259,432
Consumer 38,765
 26
 2
 170
 198
 38,963
Total loans $13,166,460
 $5,651
 $869
 $16,547
 $23,067
 $13,189,527

The following table presents the recorded investment in non-accrual loans and loans past due ninety days or more and still accruing interest by class of loans: 
  December 31, 2019 December 31, 2018
  Non-accrual loans Loans past due 90 days or more and still accruing Non-accrual loans Loans past due 90 days or more and still accruing
  Current Past Due/
Delinquent
 Total
Non-accrual
  Current Past Due/
Delinquent
 Total
Non-accrual
 
  (in thousands)
Commercial and industrial $19,080
 $5,421
 $24,501
 $
 $7,639
 $7,451
 $15,090
 $
Commercial real estate                
Owner occupied 4,418
 124
 4,542
 
 
 
 
 594
Non-owner occupied 7,265
 11,913
 19,178
 
 
 
 
 
Multi-family 
 
 
 
 
 
 
 
Construction and land development              
Construction 2,147
 
 2,147
 
 
 476
 476
 
Land 
 
 
 
 
 
 
 
Residential real estate 1,231
 4,369
 5,600
 
 552
 11,387
 11,939
 
Consumer 
 
 
 
 
 241
 241
 
Total $34,141
 $21,827
 $55,968
 $
 $8,191
 $19,555
 $27,746
 $594
  December 31, 2017 December 31, 2016
  Non-accrual loans Loans past due 90 days or more and still accruing Non-accrual loans Loans past due 90 days or more and still accruing
  Current Past Due/
Delinquent
 Total
Non-accrual
  Current Past Due/
Delinquent
 Total
Non-accrual
 
  (in thousands)
Commercial and industrial $17,913
 $4,113
 $22,026
 $43
 $10,921
 $6,046
 $16,967
 $775
Commercial real estate                
Owner occupied 1,089
 792
 1,881
 
 5,084
 3,264
 8,348
 285
Non-owner occupied 
 5,840
 5,840
 
 8,317
 1
 8,318
 
Multi-family 
 
 
 
 
 
 
 
Construction and land development              
Construction 
 
 
 
 
 
 
 
Land 868
 5,111
 5,979
 
 
 1,284
 1,284
 
Residential real estate 2,039
 6,078
 8,117
 
 99
 5,093
 5,192
 
Consumer 
 82
 82
 
 
 163
 163
 7
Total $21,909
 $22,016
 $43,925
 $43
 $24,421
 $15,851
 $40,272
 $1,067

The reduction in interest income associated with loans on non-accrual status was approximately $2.4$2.2 million, $2.0$2.3 million, and $2.5$2.4 million for the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, respectively.
The Company utilizes an internal asset classification system as a means of reporting problem and potential problem loans. Under the Company’s risk rating system, the Company classifies problem and potential problem loans as Special Mention, Substandard, Doubtful, and Loss. Substandard loans include those characterized by well-defined weaknesses and carry the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loans classified as Doubtful, or risk rated eight, have all the weaknesses inherent in those classified as Substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The final rating of Loss covers loans considered uncollectible and having such little recoverable value that it is not practical to defer writing off the asset. Loans that do not currently expose the Company to sufficient risk to warrant classification in one of the aforementioned categories, but possess weaknesses that warrant management’s close attention, are deemed to be Special Mention. Risk ratings are updated, at a minimum, quarterly.

The following tables present gross loans held for investment by risk rating: 
 December 31, 2017 December 31, 2019
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Commercial and industrial $6,675,574
 $85,781
 $76,328
 $3,698
 $
 $6,841,381
 $9,265,823
 $65,893
 $49,878
 $449
 $
 $9,382,043
Commercial real estate                        
Owner occupied 2,149,465
 43,122
 48,397
 629
 
 2,241,613
 2,265,566
 9,579
 41,768
 
 
 2,316,913
Non-owner occupied 3,676,711
 11,166
 14,692
 
 
 3,702,569
 4,913,007
 64,161
 47,050
 
 
 5,024,218
Multi-family 201,442
 
 
 
 
 201,442
 221,416
 
 
 
 
 221,416
Construction and land development         
              
Construction 1,072,342
 4,477
 13,357
 
 
 1,090,176
 1,157,169
 17,592
 2,147
 
 
 1,176,908
Land 535,412
 637
 5,979
 
 
 542,028
 773,868
 1,380
 
 
 
 775,248
Residential real estate 408,527
 8,971
 8,442
 
 
 425,940
 2,141,336
 366
 5,962
 
 
 2,147,664
Consumer 47,824
 878
 84
 
 
 48,786
 57,073
 10
 
 
 
 57,083
Total $14,767,297
 $155,032
 $167,279
 $4,327
 $
 $15,093,935
 $20,795,258
 $158,981
 $146,805
 $449
 $
 $21,101,493
 December 31, 2017 December 31, 2019
 Pass Special Mention Substandard Doubtful Loss Total Pass Special Mention Substandard Doubtful Loss Total
 (in thousands) (in thousands)
Current (up to 29 days past due) $14,758,149
 $154,295
 $145,934
 $2,993
 $
 $15,061,371
 $20,785,118
 $158,907
 $120,897
 $265
 $
 $21,065,187
Past due 30 - 59 days 7,966
 518
 4,737
 
 
 13,221
 8,263
 58
 7,092
 
 
 15,413
Past due 60 - 89 days 1,182
 219
 968
 
 
 2,369
 1,481
 16
 861
 
 
 2,358
Past due 90 days or more 
 
 15,640
 1,334
 
 16,974
 396
 
 17,955
 184
 
 18,535
Total $14,767,297
 $155,032
 $167,279
 $4,327
 $
 $15,093,935
 $20,795,258
 $158,981
 $146,805
 $449
 $
 $21,101,493
  December 31, 2018
  Pass Special Mention Substandard Doubtful Loss Total
  (in thousands)
Commercial and industrial $7,574,506
 $61,202
 $126,356
 $578
 $
 $7,762,642
Commercial real estate            
Owner occupied 2,255,513
 12,860
 57,007
 
 
 2,325,380
Non-owner occupied 4,030,350
 12,982
 8,505
 
 
 4,051,837
Multi-family 161,591
 
 
 
 
 161,591
Construction and land development            
Construction 1,378,624
 1,210
 2,830
 
 
 1,382,664
Land 751,012
 
 1,077
 
 
 752,089
Residential real estate 1,191,571
 527
 12,257
 
 
 1,204,355
Consumer 69,755
 75
 241
 
 
 70,071
Total $17,412,922
 $88,856
 $208,273
 $578
 $
 $17,710,629
  December 31, 2018
  Pass Special Mention Substandard Doubtful Loss Total
  (in thousands)
Current (up to 29 days past due) $17,400,616
 $87,264
 $186,020
 $
 $
 $17,673,900
Past due 30 - 59 days 11,255
 1,580
 4,109
 
 
 16,944
Past due 60 - 89 days 719
 12
 3,767
 404
 
 4,902
Past due 90 days or more 332
 
 14,377
 174
 
 14,883
Total $17,412,922
 $88,856
 $208,273
 $578
 $
 $17,710,629
  December 31, 2016
  Pass Special Mention Substandard Doubtful Loss Total
  (in thousands)
Commercial and industrial $5,722,185
 $70,011
 $58,590
 $5,000
 $
 $5,855,786
Commercial real estate            
Owner occupied 1,935,322
 53,634
 22,090
 2,230
 
 2,013,276
Non-owner occupied 3,278,090
 22,972
 38,733
 
 
 3,339,795
Multi-family 203,964
 197
 
 
 
 204,161
Construction and land development            
Construction 961,290
 
 11,952
 
 
 973,242
Land 501,569
 337
 2,966
 
 
 504,872
Residential real estate 252,304
 929
 6,199
 
 
 259,432
Consumer 38,698
 64
 201
 
 
 38,963
Total $12,893,422
 $148,144
 $140,731
 $7,230
 $
 $13,189,527


  December 31, 2016
  Pass Special Mention Substandard Doubtful Loss Total
  (in thousands)
Current (up to 29 days past due) $12,887,308
 $147,838
 $124,084
 $7,230
 $
 $13,166,460
Past due 30 - 59 days 5,433
 96
 122
 
 
 5,651
Past due 60 - 89 days 410
 210
 249
 
 
 869
Past due 90 days or more 271
 
 16,276
 
 
 16,547
Total $12,893,422
 $148,144
 $140,731
 $7,230
 $
 $13,189,527
The table below reflects the recorded investment in loans classified as impaired: 
  December 31,
  2019 2018
  (in thousands)
Impaired loans with a specific valuation allowance under ASC 310 (1) $20,979
 $986
Impaired loans without a specific valuation allowance under ASC 310 (2) 95,324
 111,266
Total impaired loans $116,303
 $112,252
Valuation allowance related to impaired loans $(2,776) $(681)
  December 31,
  2017 2016
  (in thousands)
Impaired loans with a specific valuation allowance under ASC 310 (1) $19,315
 $10,909
Impaired loans without a specific valuation allowance under ASC 310 (2) 79,239
 88,300
Total impaired loans $98,554
 $99,209
Valuation allowance related to impaired loans (3) $(5,606) $(4,239)


(1)Includes 0 TDR loans of $3.7 million and $2.5 million at December 31, 20172019 and 2016, respectively.2018.
(2)Includes TDR loans of $48.8$38.9 million and $58.3$44.5 million at December 31, 20172019 and 2016, respectively.
(3)Includes valuation allowance related to TDR loans of $1.2 million and $0.6 million at December 31, 2017 and 2016,2018, respectively.
The following table presents impaired loans by class: 
  December 31,
  2019 2018
  (in thousands)
Commercial and industrial $48,984
 $63,896
Commercial real estate    
Owner occupied 17,736
 6,530
Non-owner occupied 35,538
 12,407
Multi-family 
 
Construction and land development    
Construction 2,147
 
Land 6,274
 9,403
Residential real estate 5,600
 19,744
Consumer 24
 272
Total $116,303
 $112,252
  December 31,
  2017 2016
  (in thousands)
Commercial and industrial $34,156
 $21,462
Commercial real estate    
Owner occupied 10,430
 20,748
Non-owner occupied 21,251
 25,524
Multi-family 
 
Construction and land development    
Construction 
 
Land 15,426
 14,838
Residential real estate 17,170
 16,391
Consumer 121
 246
Total $98,554
 $99,209

A valuation allowance is established for an impaired loan when the fair value of the loan is less than the recorded investment. In certain cases, portions of impaired loans are charged-offwritten down to realizable value instead of establishing a valuation allowance and are included, when applicable, in the table above as “Impaired loans without a specific valuation allowance under ASC 310.” However, before concluding that an impaired loan needs no associated valuation allowance, an assessment is made to consider all available and relevant information for the method used to evaluate impairment and the type of loan being assessed. The valuation allowance disclosed above is included in the allowance for credit losses reported inon the Consolidated Balance Sheets as of December 31, 20172019 and 2016.2018.

The following table presents the average investment in impaired loans and income recognized on impaired loans: 
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Average balance on impaired loans $104,866
 $109,461
 $150,151
Interest income recognized on impaired loans 4,046
 4,167
 4,794
Interest recognized on non-accrual loans, cash basis 1,614
 1,254
 1,634
The following table presents average investment in impaired loans by loan class: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Commercial and industrial $45,223
 $52,496
 $33,519
Commercial real estate      
Owner occupied 15,829
 7,682
 18,692
Non-owner occupied 25,163
 15,375
 22,000
Multi-family 
 
 
Construction and land development      
Construction 13,315
 
 
Land 7,716
 9,547
 13,558
Residential real estate 13,882
 19,425
 16,893
Consumer 159
 300
 204
Total $121,287
 $104,825
 $104,866
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Commercial and industrial $33,519
 $26,577
 $20,482
Commercial real estate      
Owner occupied 18,692
 18,865
 34,912
Non-owner occupied 22,000
 30,633
 56,360
Multi-family 
 
 
Construction and land development      
Construction 
 
 
Land 13,558
 17,006
 19,561
Residential real estate 16,893
 16,096
 18,453
Consumer 204
 284
 383
Total $104,866
 $109,461
 $150,151

The average investment in TDR loans included in the average investment in impaired loans table above for the years ended December 31, 2019, 2018, and 2017 2016, and 2015 was $55.5$52.9 million, $68.8$51.2 million, and $113.9$55.5 million, respectively.
The following table presents interest income on impaired loans by class: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Commercial and industrial $1,857
 $2,113
 $1,077
Commercial real estate      
Owner occupied 815
 491
 677
Non-owner occupied 821
 937
 1,074
Multi-family 
 
 
Construction and land development      
Construction 715
 
 
Land 474
 566
 699
Residential real estate 329
 381
 516
Consumer 1
 2
 3
Total $5,012
 $4,490
 $4,046
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Commercial and industrial $1,077
 $727
 $288
Commercial real estate      
Owner occupied 677
 849
 1,575
Non-owner occupied 1,074
 1,196
 1,560
Multi-family 
 
 
Construction and land development      
Construction 
 
 
Land 699
 830
 785
Residential real estate 516
 560
 579
Consumer 3
 5
 7
Total $4,046
 $4,167
 $4,794

The Company is not committed to lend significant additional funds on these impaired loans.

The following table summarizes nonperforming assets: 
  December 31,
  2019 2018
  (in thousands)
Non-accrual loans (1) $55,968
 $27,746
Loans past due 90 days or more on accrual status 
 594
Accruing troubled debt restructured loans 28,356
 36,458
Total nonperforming loans 84,324
 64,798
Other assets acquired through foreclosure, net 13,850
 17,924
Total nonperforming assets $98,174
 $82,722
  December 31,
  2017 2016
  (in thousands)
Non-accrual loans (1) $43,925
 $40,272
Loans past due 90 days or more on accrual status (2) 43
 1,067
Accruing troubled debt restructured loans 42,431
 53,637
Total nonperforming loans 86,399
 94,976
Other assets acquired through foreclosure, net 28,540
 47,815
Total nonperforming assets $114,939
 $142,791


(1)Includes non-accrual TDR loans of $10.1$10.6 million and $7.1$8.0 million at December 31, 20172019 and 2016,2018, respectively.
(2)Includes less than $0.1 million from loans acquired with deteriorated credit quality at each of the periods ended December 31, 2017 and 2016.


Loans Acquired with Deteriorated Credit Quality
Changes in the accretable yield for loans acquired with deteriorated credit quality are as follows:
 Year Ended December 31, Year Ended December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands) (in thousands)
Balance, at beginning of period $15,177
 $15,925
 $19,156
 $3,767
 $9,324
 $15,177
Additions due to acquisition 
 4,301
 857
 
 
 
Measurement period adjustments 
 
 38
Reclassifications from non-accretable to accretable yield (1) 2,086
 1,892
 1,747
 
 683
 2,086
Accretion to interest income (2,797) (3,439) (3,996) (570) (1,018) (2,797)
Reversal of fair value adjustments upon disposition of loans (5,142) (3,502) (1,877) (923) (5,222) (5,142)
Balance, at end of period $9,324
 $15,177
 $15,925
 $2,274
 $3,767
 $9,324

(1)The primary drivers of reclassification from non-accretable to accretable yield resulted from changes in estimated cash flows.

Allowance for Credit Losses
The following table summarizes the changes in the allowance for credit losses by portfolio type: 
  Year Ended December 31,
  Construction and Land Development Commercial Real Estate Residential Real Estate Commercial and Industrial Consumer Total
  (in thousands)
2019            
Beginning Balance $22,513
 $34,829
 $11,276
 $83,118
 $981
 $152,717
Charge-offs 141
 139
 594
 8,120
 128
 9,122
Recoveries (91) (909) (412) (4,265) (25) (5,702)
Provision 1,431
 11,674
 2,620
 3,039
 (264) 18,500
Ending balance $23,894
 $47,273
 $13,714
 $82,302
 $614
 $167,797
2018            
Beginning Balance $19,599
 $31,648
 $5,500
 $82,527
 $776
 $140,050
Charge-offs 1
 233
 1,038
 15,034
 114
 16,420
Recoveries (1,433) (1,237) (947) (2,427) (43) (6,087)
Provision 1,482
 2,177
 5,867
 13,198
 276
 23,000
Ending balance $22,513
 $34,829
 $11,276
 $83,118
 $981
 $152,717
2017            
Beginning Balance $21,175
 $25,673
 $3,851
 $73,333
 $672
 $124,704
Charge-offs 
 2,269
 447
 8,186
 102
 11,004
Recoveries (1,229) (2,897) (1,778) (3,112) (84) (9,100)
Provision (2,805) 5,347
 318
 14,268
 122
 17,250
Ending balance $19,599
 $31,648
 $5,500
 $82,527
 $776
 $140,050
  Year Ended December 31,
  Construction and Land Development Commercial Real Estate Residential Real Estate Commercial and Industrial Consumer Total
  (in thousands)
2017            
Beginning Balance $21,175
 $25,673
 $3,851
 $73,333
 $672
 $124,704
Charge-offs 
 2,269
 447
 8,186
 102
 11,004
Recoveries (1,229) (2,897) (1,778) (3,112) (84) (9,100)
Provision (2,805) 5,347
 318
 14,268
 122
 17,250
Ending balance $19,599
 $31,648
 $5,500
 $82,527
 $776
 $140,050
2016            
Beginning Balance $18,976
 $23,160
 $5,278
 $71,181
 $473
 $119,068
Charge-offs 18
 728
 165
 12,477
 161
 13,549
Recoveries (485) (5,690) (875) (3,991) (144) (11,185)
Provision 1,732
 (2,449) (2,137) 10,638
 216
 8,000
Ending balance $21,175
 $25,673
 $3,851
 $73,333
 $672
 $124,704
2015            
Beginning Balance $18,558
 $28,783
 $7,456
 $54,566
 $853
 $110,216
Charge-offs 
 
 820
 5,550
 127
 6,497
Recoveries (1,872) (4,139) (2,181) (3,754) (203) (12,149)
Provision (1,454) (9,762) (3,539) 18,411
 (456) 3,200
Ending balance $18,976
 $23,160
 $5,278
 $71,181
 $473
 $119,068


The following table presents impairment method information related to loans and allowance for credit losses by loan portfolio segment: 
 Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans
 (in thousands) (in thousands)
Loans as of December 31, 2017            
Loans as of December 31, 2019;Loans as of December 31, 2019;            
Recorded Investment                            
Impaired loans with an allowance recorded $
 $
 $19,315
 $
 $
 $
 $19,315
 $
 $11,913
 $6,919
 $
 $2,147
 $
 $20,979
Impaired loans with no allowance recorded 10,430
 21,250
 14,842
 17,170
 15,426
 121
 79,239
 17,736
 23,625
 42,065
 5,600
 6,274
 24
 95,324
Total loans individually evaluated for impairment 10,430
 21,250
 34,157
 17,170
 15,426
 121
 98,554
 17,736
 35,538
 48,984
 5,600
 8,421
 24
 116,303
Loans collectively evaluated for impairment 2,221,614
 3,777,219
 6,807,181
 408,169
 1,616,778
 48,665
 14,879,626
 2,296,342
 5,159,921
 9,333,059
 2,142,045
 1,943,735
 57,059
 20,932,161
Loans acquired with deteriorated credit quality 9,569
 105,542
 43
 601
 
 
 115,755
 2,835
 50,175
 
 19
 
 
 53,029
Total recorded investment $2,241,613
 $3,904,011
 $6,841,381
 $425,940
 $1,632,204
 $48,786
 $15,093,935
 $2,316,913
 $5,245,634
 $9,382,043
 $2,147,664
 $1,952,156
 $57,083
 $21,101,493
Unpaid Principal BalanceUnpaid Principal Balance            Unpaid Principal Balance            
Impaired loans with an allowance recorded $
 $
 $20,795
 $
 $
 $
 $20,795
 $
 $11,949
 $9,844
 $
 $2,262
 $
 $24,055
Impaired loans with no allowance recorded 17,459
 28,028
 42,261
 26,057
 32,289
 10,695
 156,789
 18,681
 24,738
 43,848
 5,708
 6,413
 52
 99,440
Total loans individually evaluated for impairment 17,459
 28,028
 63,056
 26,057
 32,289
 10,695
 177,584
 18,681
 36,687
 53,692
 5,708
 8,675
 52
 123,495
Loans collectively evaluated for impairment 2,221,614
 3,777,219
 6,807,181
 408,169
 1,616,778
 48,665
 14,879,626
 2,297,168
 5,177,477
 9,312,100
 2,113,893
 1,963,116
 57,383
 20,921,137
Loans acquired with deteriorated credit quality 12,619
 128,440
 3,146
 720
 
 
 144,925
 3,577
 60,191
 
 72
 
 
 63,840
Total unpaid principal balance $2,251,692
 $3,933,687
 $6,873,383
 $434,946
 $1,649,067
 $59,360
 $15,202,135
 $2,319,426
 $5,274,355
 $9,365,792
 $2,119,673
 $1,971,791
 $57,435
 $21,108,472
Related Allowance for Credit LossesRelated Allowance for Credit Losses            Related Allowance for Credit Losses            
Impaired loans with an allowance recorded $
 $
 $5,606
 $
 $
 $
 $5,606
 $
 $1,219
 $1,050
 $
 $507
 $
 $2,776
Impaired loans with no allowance recorded 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total loans individually evaluated for impairment 
 
 5,606
 
 
 
 5,606
 
 1,219
 1,050
 
 507
 
 2,776
Loans collectively evaluated for impairment 13,884
 16,135
 76,919
 5,500
 19,599
 776
 132,813
 13,842
 32,114
 81,252
 13,714
 23,387
 614
 164,923
Loans acquired with deteriorated credit quality 
 1,629
 2
 
 
 
 1,631
 
 98
 
 
 
 
 98
Total allowance for credit losses $13,884
 $17,764
 $82,527
 $5,500
 $19,599
 $776
 $140,050
 $13,842
 $33,431
 $82,302
 $13,714
 $23,894
 $614
 $167,797

  Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans
  (in thousands)
Loans as of December 31, 2018;            
Recorded Investment              
Impaired loans with an allowance recorded $
 $
 $623
 $363
 $
 $
 $986
Impaired loans with no allowance recorded 6,530
 12,407
 63,273
 19,381
 9,403
 272
 111,266
Total loans individually evaluated for impairment 6,530
 12,407
 63,896
 19,744
 9,403
 272
 112,252
Loans collectively evaluated for impairment 2,314,871
 4,121,464
 7,698,746
 1,184,592
 2,125,350
 69,799
 17,514,822
Loans acquired with deteriorated credit quality 3,979
 79,557
 
 19
 
 
 83,555
Total recorded investment $2,325,380
 $4,213,428
 $7,762,642
 $1,204,355
 $2,134,753
 $70,071
 $17,710,629
Unpaid Principal Balance              
Impaired loans with an allowance recorded $
 $
 $1,482
 $363
 $
 $
 $1,845
Impaired loans with no allowance recorded 11,852
 18,155
 103,992
 27,979
 25,624
 10,632
 198,234
Total loans individually evaluated for impairment 11,852
 18,155
 105,474
 28,342
 25,624
 10,632
 200,079
Loans collectively evaluated for impairment 2,314,871
 4,121,464
 7,698,746
 1,184,592
 2,125,350
 69,799
 17,514,822
Loans acquired with deteriorated credit quality 5,315
 95,680
 4,352
 72
 
 
 105,419
Total unpaid principal balance $2,332,038
 $4,235,299
 $7,808,572
 $1,213,006
 $2,150,974
 $80,431
 $17,820,320
Related Allowance for Credit Losses            
Impaired loans with an allowance recorded $
 $
 $621
 $60
 $
 $
 $681
Impaired loans with no allowance recorded 
 
 
 
 
 
 
Total loans individually evaluated for impairment 
 
 621
 60
 
 
 681
Loans collectively evaluated for impairment 14,286
 20,456
 82,488
 11,216
 22,513
 981
 151,940
Loans acquired with deteriorated credit quality 
 87
 9
 
 
 
 96
Total allowance for credit losses $14,286
 $20,543
 $83,118
 $11,276
 $22,513
 $981
 $152,717
  Commercial Real Estate-Owner Occupied Commercial Real Estate-Non-Owner Occupied Commercial and Industrial Residential Real Estate Construction and Land Development Consumer Total Loans
  (in thousands)
Loans as of December 31, 2016            
Recorded Investment              
Impaired loans with an allowance recorded $3,125
 $
 $7,766
 $
 $
 $18
 $10,909
Impaired loans with no allowance recorded 17,624
 25,524
 13,695
 16,391
 14,838
 228
 88,300
Total loans individually evaluated for impairment 20,749
 25,524
 21,461
 16,391
 14,838
 246
 99,209
Loans collectively evaluated for impairment 1,981,176
 3,383,585
 5,834,325
 242,409
 1,443,952
 38,717
 12,924,164
Loans acquired with deteriorated credit quality 11,351
 134,847
 
 632
 19,324
 
 166,154
Total recorded investment $2,013,276
 $3,543,956
 $5,855,786
 $259,432
 $1,478,114
 $38,963
 $13,189,527
Unpaid Principal Balance              
Impaired loans with an allowance recorded $3,125
 $
 $8,019
 $
 $
 $18
 $11,162
Impaired loans with no allowance recorded 26,336
 33,632
 43,683
 26,225
 33,487
 1,358
 164,721
Total loans individually evaluated for impairment 29,461
 33,632
 51,702
 26,225
 33,487
 1,376
 175,883
Loans collectively evaluated for impairment 1,981,176
 3,383,585
 5,834,325
 242,409
 1,443,952
 38,717
 12,924,164
Loans acquired with deteriorated credit quality 14,878
 165,275
 925
 738
 19,858
 
 201,674
Total unpaid principal balance $2,025,515
 $3,582,492
 $5,886,952
 $269,372
 $1,497,297
 $40,093
 $13,301,721
Related Allowance for Credit Losses            
Impaired loans with an allowance recorded $937
 $
 $3,301
 $
 $
 $1
 $4,239
Impaired loans with no allowance recorded 
 
 
 
 
 
 
Total loans individually evaluated for impairment 937
 
 3,301
 
 
 1
 4,239
Loans collectively evaluated for impairment 11,403
 12,646
 69,673
 3,851
 20,398
 671
 118,642
Loans acquired with deteriorated credit quality 
 687
 359
 
 777
 
 1,823
Total allowance for credit losses $12,340
 $13,333
 $73,333
 $3,851
 $21,175
 $672
 $124,704


Troubled Debt Restructurings
A TDR loan is a loan on which the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that the Company would not otherwise consider. The loan terms that have been modified or restructured due to a borrower’s financial situation include, but are not limited to, a reduction in the stated interest rate, an extension of the maturity or renewal of the loan at an interest rate below current market, a reduction in the face amount of the debt, a reduction in the accrued interest, or deferral of interest payments. The majority of the Company's modifications are extensions in terms or deferral of payments which result in no lost principal or interest followed by reductions in interest rates or accrued interest. A TDR loan is also considered impaired. Consistent with regulatory guidance, a TDR loan that is subsequently modified in another restructuring agreement but has shown sustained performance and classification as a TDR, will be removed from TDR status provided that the modified terms were market-based at the time of modification.
The following table presents information on the financial effects of TDR loans by class for the periods presented:
 Year Ended December 31, 2017 Year Ended December 31, 2019
 Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 11
 $3,513
 $
 $
 $3,513
 $
 4
 $11,451
 $
 $
 $11,451
 $
Commercial real estate 

 

 

 

 

 

            
Owner occupied 
 
 
 
 
 
 2
 2,026
 
 
 2,026
 
Non-owner occupied 3
 2,993
 
 
 2,993
 
 2
 11,546
 
 
 11,546
 
Multi-family 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development                        
Construction 
 
 
 
 
 
 1
 17,022
 
 
 17,022
 
Land 
 
 
 
 
 
 
 
 
 
 
 
Residential real estate 1
 122
 
 
 122
 
 
 
 
 
 
 
Consumer 
 
 
 
 
 
 
 
 
 
 
 
Total 15
 $6,628
 $
 $
 $6,628
 $
 9
 $42,045
 $
 $
 $42,045
 $
 Year Ended December 31, 2016 Year Ended December 31, 2018
 Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 2
 $2,405
 $
 $
 $2,405
 $
 11
 $35,132
 $
 $
 $35,132
 $
Commercial real estate                        
Owner occupied 
 
 
 
 
 
 
 
 
 
 
 
Non-owner occupied 
 
 
 
 
 
 
 
 
 
 
 
Multi-family 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development                        
Construction 
 
 
 
 
 
 
 
 
 
 
 
Land 
 
 
 
 
 
 
 
 
 
 
 
Residential real estate 
 
 
 
 
 
 1
 294
 
 
 294
 
Consumer 
 
 
 
 
 
 
 
 
 
 
 
Total 2
 $2,405
 $
 $
 $2,405
 $
 12
 $35,426
 $
 $
 $35,426
 $

 Year Ended December 31, 2015 Year Ended December 31, 2017
 Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses Number of Loans Pre-Modification Outstanding Recorded Investment Forgiven Principal Balance Lost Interest Income Post-Modification Outstanding Recorded Investment Waived Fees and Other Expenses
 (dollars in thousands) (dollars in thousands)
Commercial and industrial 1
 $256
 $
 $
 $256
 $
 11
 $3,513
 $
 $
 $3,513
 $
Commercial real estate                        
Owner occupied 
 
 
 
 
 
 
 
 
 
 
 
Non-owner occupied 1
 193
 
 
 193
 
 3
 2,993
 
 
 2,993
 
Multi-family 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development                        
Construction 
 
 
 
 
 
 
 
 
 
 
 
Land 
 
 
 
 
 
 
 
 
 
 
 
Residential real estate 1
 81
 
 3
 78
 4
 1
 122
 
 
 122
 
Consumer 
 
 
 
 
 
 
 
 
 
 
 
Total 3
 $530
 $
 $3
 $527
 $4
 15
 $6,628
 $
 $
 $6,628
 $
The following table presents TDR loans by class for which there was a payment default during the period: 
  Year Ended December 31,
  2019 2018 2017
  Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment
  (dollars in thousands)
Commercial and industrial 
 $
 
 $
 1
 $87
Commercial real estate            
Owner occupied 
 
 
 
 1
 135
Non-owner occupied 
 
 
 
 1
 308
Multi-family 
 
 
 
 
 
Construction and land development            
Construction 
 
 
 
 2
 1,119
Land 
 
 
 
 
 
Residential real estate 2
 371
 
 
 1
 48
Consumer 
 
 
 
 
 
Total 2
 $371
 
 $
 6
 $1,697
  Year Ended December 31,
  2017 2016 2015
  Number of Loans Recorded Investment Number of Loans Recorded Investment Number of Loans Recorded Investment
  (dollars in thousands)
Commercial and industrial 1
 $87
 
 $
 
 $
Commercial real estate            
Owner occupied 1
 135
 
 
 
 
Non-owner occupied 1
 308
 1
 5,381
 
 
Multi-family 
 
 
 
 
 
Construction and land development            
Construction 2
 1,119
 
 
 1
 137
Land 
 
 
 
 
 
Residential real estate 1
 48
 2
 408
 3
 1,047
Consumer 
 
 
 
 
 
Total 6
 $1,697
 3
 $5,789
 4
 $1,184

A TDR loan is deemed to have a payment default when it becomes past due 90 days, goes on non-accrual, or is restructured again. Payment defaults, along with other qualitative indicators, are considered by management in the determination of the allowance for credit losses.
At December 31, 20172019 and 2016, there were no loan2018, commitments outstanding on TDR loans.loans totaled $0.2 million and $1.5 million, respectively.

Loan Purchases and Sales
InThe Company has a residential mortgage acquisition program, in which it partners with strategic third parties to execute flow and bulk residential loan purchases that meet the normal course of business, one of the Company’s Other NBLs routinely purchasesCompany's goals and sells commercialunderwriting criteria. The following table presents these residential and industrial loans. During the year ended December 31, 2017, purchases and sales related to this business line totaled $694.7 million and $154.3 million, respectively. The increase in this business line, net of dispositions and payoffs, was $239.5 million for 2017, compared to $114.1 million for 2016.
Totalother secondary market loan purchases during the years ended December 31, 2017 and 2016, inclusive of the purchases from the Company's Other NBL noted above, totaled $908.1 million and $340.6 million, respectively. For 2017, total purchased loans also included of $1.9 million of commercial and industrial loans and $211.5 million of residential real estate loans. For 2016, these purchased loans consisted of $340.0 million of commercial and industrial loans and $0.6 million of commercial real estate loans.sales by loan portfolio segment: 
During the year ended December 31, 2017, the Company sold loans, inclusive of the sales from the Company's Other NBL noted above, with a carrying value of $170.9 million and recognized a gain of $0.9 million on the sales. During the year ended
  Year Ended December 31,
  2019 2018
  (in thousands)
Loan purchases    
Commercial and industrial $1,014,894
 $690,122
Commercial real estate - non-owner occupied 49,211
 
Construction and land development 34,490
 27,517
Residential real estate 1,434,812
 883,179
Total $2,533,407
 $1,600,818
     
Loan sales    
Carrying value $98,963
 $66,477
Gain on sale 690
 2,638

December 31, 2016, the Company sold loans, which consisted primarily of CRE and SBA loans with a carrying value of $39.3 million and recognized a gain of $2.5 million on the sales.
4. PREMISES AND EQUIPMENT
 The following is a summary of the major categories of premises and equipment:
  December 31,
  2019 2018
  (in thousands)
Bank premises $91,574
 $89,930
Land and improvements 32,954
 32,954
Furniture, fixtures, and equipment 53,621
 42,729
Leasehold improvements 28,477
 25,919
Construction in progress 10,449
 6,302
Total 217,075
 197,834
Accumulated depreciation and amortization (91,237) (78,360)
Premises and equipment, net $125,838
 $119,474

  December 31,
  2017 2016
  (in thousands)
Bank premises $89,411
 $83,285
Land and improvements 32,953
 33,309
Furniture, fixtures, and equipment 37,098
 45,676
Leasehold improvements 23,707
 22,709
Construction in progress 1,415
 4,840
Total 184,584
 189,819
Accumulated depreciation and amortization (65,865) (69,986)
Premises and equipment, net $118,719
 $119,833
Lease Obligations5. LEASES
Adoption of ASU 2016-02, Leases
On January 1, 2019, the Company adopted the amendments to ASC 842, Leases, which requires lessees to recognize lease assets and liabilities arising from operating leases on the balance sheet. The Company adopted the new lease guidance using the modified retrospective approach and elected the transition option issued under ASU 2018-11, Leases (Topic 842) Targeted Improvements, allowing entities to continue to apply the legacy guidance in ASC 840, Leases, to prior periods, including disclosure requirements. Accordingly, prior period financial results and disclosures have not been adjusted.
The Company leases certain premises and equipment under non-cancelablehas operating leases expiring through 2027. under which it leases its branch offices, corporate headquarters, other offices, and data facility centers. Upon adoption of the new lease guidance, on January 1, 2019, the Company recorded a ROU asset and corresponding lease liability of $42.5 million and $46.1 million, respectively, on the Consolidated Balance Sheet. As of December 31, 2019, the Company's operating lease ROU asset and operating lease liability totaled $72.6 million and $78.1 million, respectively. The increase in the operating lease ROU asset and the operating lease liability from the adoption date is due to execution of multiple office lease extensions and new office lease agreements subsequent to the adoption date. A weighted average discount rate of 3.08% was used in the measurement of the ROU asset and lease liability as of December 31, 2019.
The Company's leases have remaining lease terms of one to 11 years, with a weighted average lease term of 8.4 years at December 31, 2019. Some leases include multiple five-year renewal options. The Company’s decision to exercise these renewal options is based on an assessment of its current business needs and market factors at the time of the renewal. Currently, the Company has

no leases for which the option to renew is reasonably certain and therefore, options to renew were not factored into the calculation of its ROU asset and lease liability as of December 31, 2019.
The following is a schedule of future minimum rental payments under these leases atthe Company's operating lease liabilities by contractual maturity as of December 31, 2017: 2019:
  (in thousands)
2020 $12,369
2021 10,413
2022 9,224
2023 9,060
2024 9,007
Thereafter 40,072
Total lease payments $90,145
Less: imputed interest 12,033
Total present value of lease liabilities $78,112
  (in thousands)
2018 $10,962
2019 9,658
2020 7,894
2021 4,589
2022 3,313
Thereafter 4,059
Total future minimum rental payments $40,475

The Company also has additional operating leases certain office locationsfor its corporate headquarters and manya branch location that have not yet commenced as of theseDecember 31, 2019. The aggregate future commitment related to the additional leases contain multiple renewal optionstotal $3.1 million. These operating leases will commence within the next 12 months and provisions for increased rents. will have lease terms of five and 11 years.
Total rent expenseoperating lease costs of $10.4 million, $11.0$12.9 million and $8.1other lease costs of $4.0 million, iswhich include common area maintenance, parking, and taxes during the year ended December 31, 2019, were included inas part of occupancy expenseexpense. Short-term lease costs were not material for the year ended December 31, 2019. For the years ended December 31, 2018 and 2017, 2016, and 2015, respectively. Total depreciationrent expense of $9.9 million, $9.2associated with the Company's operating leases totaled $11.0 million and $7.7$10.4 million, is included in occupancy expenserespectively.
The below table shows the supplemental cash flow information related to the Company's operating leases for the yearsyear ended December 31, 2017, 2016, and 2015, respectively.

5. OTHER ASSETS ACQUIRED THROUGH FORECLOSURE
The following table represents the changes in other assets acquired through foreclosure: 2019:
  (in thousands)
Cash paid for amounts included in the measurement of operating lease liabilities $12,435
Right-of-use assets obtained in exchange for new operating lease liabilities 43,681

  Year Ended December 31,
  2017
  Gross Balance Valuation Allowance Net Balance
  (in thousands)
Balance, beginning of period $54,138
 $(6,323) $47,815
Transfers to other assets acquired through foreclosure, net 1,812
 
 1,812
Proceeds from sale of other real estate owned and repossessed assets, net (23,626) 2,431
 (21,195)
Valuation adjustments, net 
 (120) (120)
(Losses) gains, net (1) 228
 
 228
Balance, end of period $32,552
 $(4,012) $28,540
       
  2016
Balance, beginning of period $52,984
 $(9,042) $43,942
Transfers to other assets acquired through foreclosure, net 13,110
 
 13,110
Proceeds from sale of other real estate owned and repossessed assets, net (11,584) 2,451
 (9,133)
Valuation adjustments, net 
 268
 268
Gains (losses), net (1) (372) 
 (372)
Balance, end of period $54,138
 $(6,323) $47,815
       
  2015
Balance, beginning of period $71,421
 $(14,271) $57,150
Transfers to other assets acquired through foreclosure, net 28,566
 
 28,566
Additions from acquisition 1,407
 
 1,407
Proceeds from sale of other real estate owned and repossessed assets, net (51,038) 5,411
 (45,627)
Valuation adjustments, net 
 (182) (182)
Gains (losses), net (1) 2,628
 
 2,628
Balance, end of period $52,984
 $(9,042) $43,942
(1)
Includes net gains related to initial transfers to other assets of $0.1 million, $0.4 million, and $0.9 million during the years ended December 31, 2017, 2016, and 2015, respectively.
At December 31, 2017, 2016, and 2015, the majority of the Company’s repossessed assets consisted of properties located in Nevada and California. The Company held 19 properties at December 31, 2017, compared to 31 at December 31, 2016.

6. GOODWILL AND OTHER INTANGIBLE ASSETS
Goodwill represents the excess consideration paid for net assets acquired in a business combination over their fair value. Goodwill and other intangible assets acquired in a business combination andthat are determined to have an indefinite useful life are not subject to amortization, but are subsequently evaluated for impairment at least annually. The Company'sCompany has goodwill totalsof $289.9 million as of December 31, 2017, of2019, which $23.2 million relateshas been allocated to the Nevada, operating segment, $149.7 million relates to the Northern California, segment, $116.9 million relates to the Technology & Innovation, segment, and $0.1 million relates to the HFF segment.operating segments.
The Company performs its annual goodwill and intangibles impairment tests as of October 1 of each year, or more often if events or circumstances indicate that the carrying value may not be recoverable. During the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, there were no events or circumstances that indicated an interim impairment test of goodwill or other intangible assets was necessary and, based on the Company's annual goodwill and intangibles impairment tests as of October 1 of each of these years, it was determined that goodwill and intangible assets are not impaired.
The fair value of assets acquired and liabilities assumed are subject to adjustment during the first twelve months after the acquisition date if additional information becomes available to indicate a more accurate or appropriate value for an asset or liability. The Company recognized initial goodwill of $0.2 million related to the HFF loan portfolio purchase, which closed on April 20, 2016. During the year ended December 31, 2017, the Company recognized measurement period adjustments related to the HFF acquisition that totaled $0.1 million for tax related items. The measurement period for the HFF acquisition ended on April 20, 2017, and therefore, the fair values of these assets acquired and liabilities assumed were considered final effective as of that date.
The following is a summary of the Company's acquired intangible assets:
  December 31, 2019 December 31, 2018
  Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount
  (in thousands)
Subject to amortization            
Core deposit intangibles $14,647
 $7,284
 $7,363
 $14,647
 $5,737
 $8,910
             
  December 31, 2019 December 31, 2018
  Gross Carrying Amount Impairment Net Carrying Amount Gross Carrying Amount Impairment Net Carrying Amount
  (in thousands)
Not subject to amortization            
Trade name $350
 $
 $350
 $350
 $
 $350
  December 31, 2017 December 31, 2016
  Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount
  (in thousands)
Subject to amortization            
Core deposit intangibles $14,647
 $4,144
 $10,503
 $40,804
 $28,227
 $12,577
             
  December 31, 2017 December 31, 2016
  Gross Carrying Amount Impairment Net Carrying Amount Gross Carrying Amount Impairment Net Carrying Amount
  (in thousands)
Not subject to amortization            
Trade name $350
 $
 $350
 $350
 $
 $350

As of December 31, 2017,2019, the Company's core deposit intangible assets had a weighted average estimated useful life of 7.55.5 years. The Company's core deposit intangibles assets related to FIB and BON were being amortized on a straight-line basis and were fully amortized as of December 31, 2017. Theremaining core deposit intangible assets consist of those acquired in the acquisition of Bridge and are being amortized using an accelerated amortization method over a period of 10 years. Amortization expense recognized on all amortizable intangibles totaled $2.1$1.5 million, $2.8$1.6 million, and $2.0$2.1 million for the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, respectively.
Below is a summary of future estimated aggregate amortization expense:

  December 31, 2019
  (in thousands)
2020 $1,494
2021 1,433
2022 1,364
2023 1,289
2024 1,206
Thereafter 577
Total $7,363
  Year Ended December 31,
  (in thousands)
2018 $1,594
2019 1,547
2020 1,494
2021 1,433
2022 1,364
Thereafter 3,071
Total $10,503


7. DEPOSITS
The table below summarizes deposits by type: 
  December 31,
  2019 2018
  (in thousands)
Non-interest-bearing demand deposits $8,537,905
 $7,456,141
Interest-bearing transaction accounts 2,760,865
 2,555,609
Savings and money market accounts 9,120,747
 7,330,709
Time certificates of deposit ($250,000 or more) 1,426,133
 1,009,900
Other time deposits 950,843
 825,088
Total deposits $22,796,493
 $19,177,447
  December 31,
  2017 2016
  (in thousands)
Non-interest-bearing demand deposits $7,433,962
 $5,632,926
Interest-bearing transaction accounts 1,586,209
 1,346,718
Savings and money market accounts 6,330,977
 6,120,877
Time certificates of deposit ($250,000 or more) 713,654
 609,678
Other time deposits 907,730
 839,664
Total deposits $16,972,532
 $14,549,863

The summary of the contractual maturities for all time deposits as of December 31, 20172019 is as follows: 
  December 31,
  (in thousands)
2020 $2,259,182
2021 105,237
2022 7,953
2023 3,502
2024 1,102
Total $2,376,976
  December 31,
  (in thousands)
2018 $1,457,335
2019 144,303
2020 12,636
2021 5,249
2022 1,655
Thereafter 206
Total $1,621,384

WAB is a participant in the Promontory Interfinancial Network, a network that offers deposit placement services such as CDARS and ICS, which offer products that qualify large deposits for FDIC insurance. Federal banking law and regulation places restrictions on depository institutions regarding brokered deposits because of the general concern that these deposits are not relationship-based and are at a greater risk of being withdrawn, thus posing liquidity risk for institutions that gather brokered deposits in significant amounts. At December 31, 20172019 and 2016,2018, the Company had $401.4$407.7 million and $413.9$322.9 million, respectively, of reciprocal CDARS deposits and $617.9$661.8 million and $607.5$706.9 million, respectively, of ICS deposits. At December 31, 20172019 and 2016,2018, the Company had $67.3 million$1.1 billion and $136.2$718.2 million, respectively, of wholesale brokered deposits. In addition, non-interest bearingnon-interest-bearing deposits for which the Company provides account holders with earnings credits or referral fees totaled $1.85$3.1 billion and $1.10$2.3 billion at December 31, 20172019 and 2016,2018, respectively. The Company incurred $8.7$30.5 million and $4.0$18.0 million in deposit related costs on these deposits during the yearyears ended December 31, 20172019 and 2016,2018, respectively.

8. OTHER BORROWINGS
The following table summarizes the Company’s borrowings as of December 31, 20172019 and 2016:2018: 
  December 31,
  2019 2018
  (in thousands)
Short-Term:    
Federal funds purchased $
 $256,000
FHLB advances 
 235,000
Total short-term borrowings $
 $491,000
  December 31,
  2017 2016
  (in thousands)
Short-Term:    
FHLB advances $390,000
 $80,000
Total short-term borrowings $390,000
 $80,000

The Company maintains otherfederal fund lines of credit with correspondent banks totaling $167.5 million,$1.2 billion as of December 31, 2019, which $22.5 million is secured by pledged securities and has a floating interest rate of one-month or three-month LIBOR plus 1.50%. The remaining $145.0 million is unsecured, of which $45.0 million has a floating interest rate of one-month LIBOR plus 3.25% and $100.0 million has a rate equivalenthave rates comparable to the federal funds effective rate.rate plus 0.10% to 0.20%. As of December 31, 2017 and 2016,2019, there are nowere 0 outstanding balances on the Company's lines of credit. As of December 31, 2018, outstanding balances on these federal fund lines of credit totaled $256.0 million.
The Company also maintains secured lines of credit with the FHLB and the FRB. The Company’s borrowing capacity is determined based on collateral pledged, generally consisting of investment securities and loans, at the time of the borrowing. At December 31, 2017,2019, the Company has $390.0 million inhad 0 short-term FHLB overnight advances, with a weighted average interest rate of 1.41%.advances. At December 31, 2016,2018, short-term FHLB advances of $80.0$235.0 million had an interest rate of 2.56%.
Other short-term borrowing sources available to the Company include customer repurchase agreements, which have a weighted average interest rate of 0.55%.0.15% and totaled $16.7 million and $22.4 million as of December 31, 2019 and 2018, respectively.
As of December 31, 20172019 and 2016,2018, the Company had additional available credit with the FHLB of approximately $1.91$4.5 billion and $2.15$2.5 billion, respectively, and with the FRB of approximately $1.11$1.1 billion and $997 million,$1.3 billion, respectively.
9. QUALIFYING DEBT
Subordinated Debt
The Parent has $175.0 million of subordinated debentures, which waswere recorded net of debt issuance costs of $5.5 million, and maturesmature July 1, 2056. Beginning on or after July 1, 2021, the Company may redeem the debentures, in whole or in part, at their principal amount plus any accrued and unpaid interest. The debentures have a fixed interest rate of 6.25% per annum.
WAB has $150.0 million of subordinated debt, which was recorded net of debt issuance costs of $1.8 million, and matures July 15, 2025. The subordinated debt has a fixed interest rate of 5.00% through June 30, 2020 and then converts to a variable rate of 3.20% plus three-month LIBOR through maturity.
To hedge the interest rate risk on the Company's subordinated debt issuances, the Company entered into fair value interest rate hedges with receive fixed/pay variable swaps.
The carrying value of all subordinated debt issuances, which includes the fair value of the related hedges, totals $308.6$319.2 million and $305.8$299.4 million at December 31, 20172019 and 2016,2018, respectively.

Junior Subordinated Debt
The Company has formed or acquired through acquisition eight8 statutory business trusts, which exist for the exclusive purpose of issuing Cumulative Trust Preferred Securities.
The Company's junior subordinated debt has contractual balances and maturity dates as follows: 
    December 31,
Name of Trust Maturity 2019 2018
At fair value   (in thousands)
BankWest Nevada Capital Trust II 2033 $15,464
 $15,464
Intermountain First Statutory Trust I 2034 10,310
 10,310
First Independent Statutory Trust I 2035 7,217
 7,217
WAL Trust No. 1 2036 20,619
 20,619
WAL Statutory Trust No. 2 2037 5,155
 5,155
WAL Statutory Trust No. 3 2037 7,732
 7,732
Total contractual balance   66,497
 66,497
FVO on junior subordinated debt   (4,812) (17,812)
Junior subordinated debt, at fair value   $61,685
 $48,685
At amortized cost      
Bridge Capital Holdings Trust I 2035 $12,372
 $12,372
Bridge Capital Holdings Trust II 2036 5,155
 5,155
Total contractual balance   17,527
 17,527
Purchase accounting adjustment, net of accretion (1)   (4,845) (5,155)
Junior subordinated debt, at amortized cost   $12,682
 $12,372
       
Total junior subordinated debt   $74,367
 $61,057
    December 31,
Name of Trust Maturity 2017 2016
At fair value   (in thousands)
BankWest Nevada Capital Trust II 2033 $15,464
 $15,464
Intermountain First Statutory Trust I 2034 10,310
 10,310
First Independent Statutory Trust I 2035 7,217
 7,217
WAL Trust No. 1 2036 20,619
 20,619
WAL Statutory Trust No. 2 2037 5,155
 5,155
WAL Statutory Trust No. 3 2037 7,732
 7,732
Total contractual balance   66,497
 66,497
FVO on junior subordinated debt   (10,263) (16,087)
Junior subordinated debt, at fair value   $56,234
 $50,410
At amortized cost      
Bridge Capital Holdings Trust I 2035 $12,372
 $12,372
Bridge Capital Holdings Trust II 2036 5,155
 5,155
Total contractual balance   17,527
 17,527
Purchase accounting adjustment, net of accretion (1)   (5,465) (5,776)
Junior subordinated debt, at amortized cost   $12,062
 $11,751
       
Total junior subordinated debt   $68,296
 $62,161

(1)The purchase accounting adjustment is being accreted over the remaining life of the trusts, pursuant to accounting guidance.
With the exception of debt issued by Bridge Capital Trust I and Bridge Capital Trust II, junior subordinated debt is recorded at fair value at each reporting date due to the FVO election made by the Company under ASC 825. The Company did not make the FVO election for the junior subordinated debt acquired as part of the Bridge acquisition. Accordingly, the carrying value of these trusts does not reflect the current fair value of the debt and includes a fair market value adjustment established at acquisition that is being accreted over the remaining life of the trusts.
The weighted average interest rate of all junior subordinated debt as of December 31, 20172019 was 4.03%4.25%, which is three-month LIBOR plus the contractual spread of 2.34%, compared to a weighted average interest rate of 3.34%5.15% at December 31, 2016.2018.
In the event of certain changes or amendments to regulatory requirements or federal tax rules, the debt is redeemable in whole. The obligations under these instruments are fully and unconditionally guaranteed by the Company and rank subordinate and junior in right of payment to all other liabilities of the Company. Based on guidance issued by the FRB, the Company's securities continue to qualify as Tier 1 Capital.

10. STOCKHOLDERS' EQUITY
Stock-Based Compensation
Restricted Stock Awards
The Incentive Plan, as amended, gives the BOD the authority to grant up to 10.5 million in stock awards consisting of unrestricted stock, stock units, dividend equivalent rights, stock options (incentive and non-qualified), stock appreciation rights, restricted stock, and performance and annual incentive awards. The Incentive Plan limits the maximum number of shares of common stock that may be awarded to any person eligible for an award to 300,000 per calendar year. In March 2017, the BOD adopted an amendment to the Incentive Plan limitingyear and also limits the total compensation (cash and stock) that can be awarded to a non-employee director to $600,000 in any calendar year. Stock awards available for grant at December 31, 20172019 were 3.22.9 million.
Restricted stock awards granted to employees in 2017 and 2016 generally vest over a 3-yearthree-year period. Stock grants made to non-employee WAL directors during 2017in 2019 became fully vested at June 30, 2017.on July 1, 2019. The Company estimates the compensation cost for stock grants based upon the grant date fair value. Stock compensation costexpense is recognized on a straight-line basis over the requisite service period for the entire award. For the year ended December 31, 2017, the Company recognized $14.3 million in stock-based compensation expense related to these stock grants, compared to $10.7 million in 2016. Stock compensation expense related to restricted stock awards and stock options granted to employees are included in Salaries and employee benefits in the Consolidated Income Statement. For restricted stock awards granted to WAL directors, the related stock compensation expense is included in Legal, professional, and directors' feesfees. For the year ended December 31, 2019, the Company recognized $17.4 million in the Consolidated Income Statement.stock-based compensation expense related to these stock grants, compared to $16.6 million in 2018, and $14.3 million in 2017.
In addition, in 2015 to 2017, the Company previously granted shares of restricted stock to certain members of executive management that had both performance and service conditions that affect vesting. DuringThere were 0 such grants made during the yearyears ended December 31, 2019 and 2018; however, expense is still being recognized for the grants made in 2017 the Company granted 144,906 shares of these restricted stock awards. The performance condition is based on achieving an EPS target for calendar year 2017. This EPS target has been met as of December 31, 2017 and therefore the restricted stock awards will vest over the remaining servicethey also have a three-year vesting period. The grant date fair value of these awards was $7.2 million. For the year ended December 31, 2017,2019, the Company recognized $2.3$1.9 million in stock-based compensation expense related to these performance-based restricted stock grants, compared to $1.1$2.5 million in 2016.2018, and $2.3 million in 2017.
A summary of the status of the Company’s unvested shares of restricted stock and changes during the years then ended is presented below: 
  December 31,
  2019 2018
  Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value
  (in thousands, except per share amounts)
Balance, beginning of period 1,027
 $47.53
 1,142
 $36.96
Granted 516
 46.04
 425
 58.02
Vested (469) 39.60
 (477) 32.31
Forfeited (114) 50.80
 (63) 43.62
Balance, end of period 960
 $49.98
 1,027
 $47.53
  December 31,
  2017 2016
  Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value
  (in thousands, except per share amounts)
Balance, beginning of period 1,278
 $26.02
 1,492
 $20.46
Granted 531
 49.06
 478
 32.00
Vested (575) 23.14
 (571) 16.95
Forfeited (92) 34.51
 (121) 23.65
Balance, end of period 1,142
 $36.96
 1,278
 $26.02

The total weighted average grant date fair value of all stock awards, including the performance-based restricted stock awards, granted during the years ended December 31, 2019, 2018, and 2017 2016, and 2015 was $26.1$23.7 million, $15.3$24.7 million, and $14.0$26.1 million, respectively. The total fair value of restricted stock that vested during the years ended December 31, 2019, 2018, and 2017 2016, and 2015 was $29.1$21.3 million, $18.3$27.4 million, and $14.6$29.1 million, respectively.
As of December 31, 2017,2019, there was $20.3$23.0 million of total unrecognized compensation cost related to unvested share-based compensation arrangements granted under the Incentive Plan. That cost is expected to be recognized over a weighted average period of 2.211.62 years.

Performance Stock Units
The Company grants to members of its executive management committee performance stock units that do not vest unless the Company achieves a specified cumulative EPS target and a TSR performance measure over a three-year performance period. In 2017, there is also a TSR performance measure. The number of shares issued will vary based on the cumulative EPS target and relative TSR performance factor that is achieved and, if applicable, TSR relative to an established peer group.achieved. The Company estimates the cost of performance stock units based upon the grant date fair value and expected vesting percentage over the three-year performance period. For the year ended December 31, 2017,2019, the Company recognized $6.5$6.9 million in stock-based compensation expense related to these performance stock units, compared to $5.7$6.4 million and $4.8$6.5 million in stock-based compensation expense for such units in 20162018 and 2015,2017, respectively.
The three-year performance period for the 20142016 grant ended on December 31, 2016,2018, and the Company's cumulative EPS for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, on February 28, 2017, executive management committee members were granted a totalentitled to the maximum award of 206,050202,776 shares, which was paid out in the first quarter of fully vested common shares.2019.
The three-year performance period for the 20152017 grant ended on December 31, 2017,2019, and the Company's cumulative EPS and TSR performance measure for the performance period exceeded the level required for a maximum award under the terms of the grant. As a result, 198,062163,901 shares will become fully vested and be paid outdistributed to executive management committee members in the first quarter of 2018.
As of December 31, 2017, outstanding performance stock unit grants made in 2016 and 2017 are expected to pay out at the maximum award amount, or 197,337 and 169,778 common shares, in 2019 and 2020, respectively.2020.
Common Stock Issuance
Under ATM Distribution AgreementRepurchase
On June 4, 2014,December 12, 2018, the Company entered intoannounced that it had adopted a distribution agency agreement with Credit Suisse Securities (USA) LLC, undercommon stock repurchase plan, pursuant to which the Company could sellwas authorized to repurchase up to $250 million of its shares of its common stock up to an aggregate offering price of $100.0 million in an offering registered with the SEC. The parties executed an Amended and Restated Distribution Agency Agreement on October 30, 2014. The Company agreed to pay Credit Suisse Securities (USA) LLC a mutually agreed rate, not to exceed 2% of the gross offering proceeds of the shares. The common stock would be sold at prevailing market prices at the time of the sale or at negotiated prices and, as a result, prices will vary.
As the Company completed $100.0 million in aggregate sales under the ATM offering, the Company's ATM offering expired and the Amended and Restated Distribution Agency Agreement was terminated as of June 30, 2016.through December 31, 2019. During the year ended December 31, 2016,2019, the Company sold 1.6 million shares under the ATM offering at a weighted-average selling price of $36.63 per share for gross proceeds of $56.8 million. Total related offering costs were $1.0 million, of which $0.9 million relates to compensation costs paid to Credit Suisse Securities (USA) LLC. During the year ended December 31, 2015, the Company sold 760,376 shares under the ATM offering at a weighted-average selling price of $38.13 per share for gross proceeds of $29.0 million. Total related offering costs were $0.7 million, of which $0.5 million relates to compensation costs paid to Credit Suisse Securities (USA) LLC.
Preferred Stock
On September 27, 2011 the Company received $141.0 million from the issuance of 141,000repurchased 2,822,402 shares of non-cumulative perpetual preferredits common stock, Series B, par value of $0.0001 per share and a liquidation preference of $1,000 per share,pursuant to the U.S. Treasury Department under the SBLF. On December 31, 2014, the Company redeemed 70,500 of its 141,000 shares of non-cumulative perpetual preferred stock, Series B.repurchase plan. The shares were redeemedrepurchased at their liquidation valuea weighted average price of $1,000 per share plus accrued dividends$42.53, for a total redemption pricepayment of $70.7$120.1 million. OnThe Company's common stock repurchase program was renewed through December 18, 2015,2020, authorizing the Company redeemedto repurchase up to an additional $250.0 million of its remaining 70,500 shares of non-cumulative perpetual preferred stock, Series B. The shares were redeemed at their liquidation value of $1,000 per share plus accrued dividends for a total redemption price of $70.7 million.outstanding common stock.
Treasury SharesCash Dividend
During the year ended December 31, 2017,2019, the Company's Board of Directors declared two quarterly cash dividends of $0.25 per share of common stock, totaling $51.3 million.
Treasury Shares
Treasury share purchases represent shares surrendered to the Company equal in value to the statutory payroll tax withholding obligations arising from the vesting of employee restricted stock awards. During the year ended December 31, 2019, the Company purchased treasury shares of 269,835210,657 at a weighted average price of $51.16$45.80 per share, compared to 305,046223,125 shares at a weighted average price per share of $31.09$57.88 in 2016.2018, and 269,865 shares at a weighted average price per share of $51.16 in 2017.


11. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods indicated: 
  Unrealized holding gains (losses) on AFS Unrealized holding gains (losses) on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total
  (in thousands)
Balance, December 31, 2016 $(14,916) $121
 $9,956
 $144
 $(4,695)
Other comprehensive income (loss) before reclassifications 6,334
 264
 (3,604) 
 2,994
Amounts reclassified from AOCI (1,444) 
 
 
 (1,444)
Net current-period other comprehensive income (loss) 4,890
 264
 (3,604) 
 1,550
Balance, December 31, 2017 $(10,026) $385
 $6,352
 $144
 $(3,145)
Balance, January 1, 2018 (1) (12,556) 469
 7,740
 144
 (4,203)
Other comprehensive (loss) income before reclassifications (40,808) (77) 5,693
 
 (35,192)
Amounts reclassified from accumulated other comprehensive income 5,773
 
 
 
 5,773
Net current-period other comprehensive (loss) income (35,035) (77) 5,693
 
 (29,419)
Balance, December 31, 2018 $(47,591) $392
 $13,433
 $144
 $(33,622)
Other comprehensive income (loss) before reclassifications 71,222
 (412) (9,804) 
 61,006
Amounts reclassified from AOCI (2,232) 
 
 (144) (2,376)
Net current-period other comprehensive income (loss) 68,990
 (412) (9,804) (144) 58,630
Balance, December 31, 2019 $21,399
 $(20) $3,629
 $
 $25,008
  Unrealized holding gains (losses) on AFS Unrealized holding gains on SERP Unrealized holding gains (losses) on junior subordinated debt Impairment loss on securities Total
  (in thousands)
Balance, December 31, 2014 $16,495
 $
 $
 $144
 $16,639
Balance January 1, 2015 (1) 16,495
 
 16,309
 144
 32,948
Other comprehensive (loss) income before reclassifications (6,117) 90
 (4,276) 
 (10,303)
Amounts reclassified from accumulated other comprehensive income (385) 
 
 
 (385)
Net current-period other comprehensive (loss) income (6,502) 90
 (4,276) 
 (10,688)
Balance, December 31, 2015 $9,993
 $90
 $12,033
 $144
 $22,260
Other comprehensive (loss) income before reclassifications (24,254) 31
 (2,077) 
 (26,300)
Amounts reclassified from accumulated other comprehensive income (655) 
 
 
 (655)
Net current-period other comprehensive (loss) income (24,909) 31
 (2,077) 
 (26,955)
Balance, December 31, 2016 $(14,916) $121
 $9,956
 $144
 $(4,695)
Other comprehensive income (loss) before reclassifications 6,334
 264
 (3,604) 
 2,994
Amounts reclassified from accumulated other comprehensive income (1,444) 
 
 
 (1,444)
Net current-period other comprehensive income (loss) 4,890
 264
 (3,604) 
 1,550
Balance, December 31, 2017 $(10,026) $385
 $6,352
 $144
 $(3,145)

(1)As adjusted due to the Company's election to early adopt an elementfor adoption of ASU 2016-01 issued by the FASB in January 2016.and ASU 2018-02. The cumulative effect of adoption of this guidance at January 1, 20152018 resulted in a decreasean increase to retained earnings of $16.3$1.1 million and a corresponding increasedecrease to accumulated other comprehensive income.
The following table presents reclassifications out of accumulated other comprehensive income: 
  Year Ended December 31,
Income Statement Classification 2019 2018 2017
  (in thousands)
Gain (loss) on sales of investment securities, net $3,152
 $(7,656) $2,343
Income tax (expense) benefit (776) 1,883
 (899)
Net of tax $2,376
 $(5,773) $1,444
  Year Ended December 31,
Income Statement Classification 2017 2016 2015
  (in thousands)
Gain on sales of investment securities, net $2,343
 $1,059
 $615
Income tax expense (899) (404) (230)
Net of tax $1,444
 $655
 $385


12. DERIVATIVES AND HEDGING ACTIVITIES
The Company is a party to various derivative instruments. Derivative instruments are contracts between two or more parties that have a notional amount and an underlying variable, require a small or no initial investment, and allow for the net settlement of positions. A derivative’s notional amount serves as the basis for the payment provision of the contract and takes the form of units, such as shares or dollars. A derivative’s underlying variable is a specified interest rate, security price, commodity price, foreign exchange rate, index, or other variable. The interaction between the notional amount and the underlying variable determines the number of units to be exchanged between the parties and influences the fair value of the derivative contract.
The primary type of derivatives that the Company uses are interest rate swaps. Generally, these instruments are used to help manage the Company's exposure to interest rate risk and meet client financing and hedging needs.
Derivatives are recorded at fair value inon the Consolidated Balance Sheets, after taking into account the effects of bilateral collateral and master netting agreements. These agreements allow the Company to settle all derivative contracts held with the same counterparty on a net basis, and to offset net derivative positions with related cash collateral, where applicable.
As of December 31, 2017, 2016,2019, 2018, and 2015,2017, the Company does not have significantany outstanding cash flow hedges or free-standing derivatives.hedges.
Derivatives Designated in Hedge Relationships
The Company utilizes derivatives that have been designated as part of a hedge relationship in accordance with the applicable accounting guidance to minimize the exposure to changes in benchmark interest rates and volatility of net interest income and EVE to interest rate fluctuations. The primary derivative instruments used to manage interest rate risk are interest rate swaps, which convert the contractual interest rate index of agreed-upon amounts of assets and liabilities (i.e., notional amounts) to another interest rate index.
The Company has entered into pay fixed/receive variable interest rate swaps designated as fair value hedges of certain fixed rate loans. As a result, the Company receives variable-rate interest payments in exchange for making fixed-rate payments over the lives of the contracts without exchanging the notional amounts.
The Company has also entered into receive fixed/pay variable interest rate swaps, designated as fair value hedges on its fixed rate subordinated debt offerings. As a result, the Company is paying a floating rate of three month LIBOR plus 3.16% and is receiving semi-annual fixed payments of 5.00% to match the payments on the $150.0 million subordinated debt. For the fair value hedge on the Company'sParent's $175.0 million subordinated debentures issued on June 16, 2016, the Company is paying a floating rate of threethree- month LIBOR plus 3.25% and is receiving quarterly fixed payments ofat 6.25% to match the payments on the debt.
Derivatives Not Designated in Hedge Relationships
Management also enters into certain foreign exchange derivative contracts whichand back-to-back interest rate swaps that are not designated as accounting hedges. TheseForeign exchange derivative contracts include spot, forward, and forward window contracts. The purpose of these derivative contracts is to mitigate foreign currency risk on transactions entered into or on behalf of customers. Contracts with customers, along with the related derivative trades the Company places, are both remeasured at fair value, and are referred to as economic hedges since they economically offset the Company's exposure. For the years ended December 31, 2017 and 2016, changes in the fair value relatedThe Company's back-to-back interest rate swaps are used to these derivative contracts totaled $3.5 million and $1.8 million, respectively, and are included in Other non-interest income on the Consolidated Income Statements.manage long-term interest rate risk.

Adoption of ASU 2017-12
The Company elected early adoption of the amendments within ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities. The guidance is effective as of January 1, 2017 and, upon adoption, the Company recorded a cumulative adjustment to opening retained earnings of $0.5 million and adjusted its 2017 earnings to exclude the effects of prior period hedge ineffectiveness, which totaled less than $0.1 million for 2017.
As of December 31, 2017,2019 and 2018, the following amounts are reflected inon the Consolidated Balance Sheet related to cumulative basis adjustments for fair value hedges:
 December 31, 2019 December 31, 2018
 Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of the Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1) Carrying Value of Hedged Assets/(Liabilities) Cumulative Fair Value Hedging Adjustment (1)
 (in thousands) (in thousands)
Loans - HFI, net of deferred loan fees and costs $699,452
 $41,919
 $578,063
 $53,292
 $650,428
 $23,039
Qualifying debt (308,608) 9,959
 (319,197) 401
 (299,401) 19,691
(1)Included in the carrying amountvalue of the hedged assets/(liabilities)
For the Company's derivative instruments that are designated and qualify as a fair value hedges,hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in current earnings in the same line item as the offsetting loss or gain on the related interest rate swaps. For loans, the gain or loss on the hedged itemsitem is included in interest income and for subordinated debt, the gain or loss on the hedged itemsitem is included in interest expense.
Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments
The following table summarizes the fair values of the Company's derivative instruments on a gross and net basis as of December 31, 2017, 2016,2019, 2018, and 2015.2017. The change in the notional amounts of these derivatives from December 31, 20152017 to December 31, 20172019 indicates the volume of the Company's derivative transaction activity during these periods. The derivative asset and liability balances are presented on a gross basis, prior to the application of bilateral collateral and master netting agreements. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow the Company to settle all derivative contracts with the same counterparty on a net basis and to offset the net derivative position with the related collateral. Where master netting agreements are not in effect or are not enforceable under bankruptcy laws, the Company does not adjust those derivative amounts with counterparties. The fair value of derivative contracts, after taking into account the effects of master netting agreements, is included in other assets or other liabilities inon the Consolidated Balance Sheets, as indicated in the following table:
 December 31, 2019 December 31, 2018 December 31, 2017
   Fair Value   Fair Value   Fair Value
 Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities
 (in thousands)
Derivatives designated as hedging instruments:              
Fair value hedges                 
Interest rate swaps$862,952
 $1,778
 $55,471
 $965,705
 $2,162
 $44,892
 $993,432
 $1,703
 $53,581
Total862,952
 1,778
 55,471
 965,705
 2,162
 44,892
 993,432
 1,703
 53,581
Netting adjustments (1)
 21
 21
 
 2,162
 2,162
 
 896
 896
Net derivatives in the balance sheet$862,952
 $1,757
 $55,450
 $965,705
 $
 $42,730
 $993,432
 $807
 $52,685
                  
Derivatives not designated as hedging instruments:              
Foreign currency contracts$6,711
 $44
 $18
 $49,690
 $454
 $201
 $85,335
 $1,232
 $983
Interest rate swaps2,932
 81
 81
 2,378
 27
 27
 36,969
 776
 776
Total$9,643
 $125
 $99
 $52,068
 $481
 $228
 $122,304
 $2,008
 $1,759
 December 31, 2017 December 31, 2016 December 31, 2015
   Fair Value   Fair Value   Fair Value
 Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities Notional
Amount
 Derivative Assets Derivative Liabilities
 (in thousands)
Derivatives designated as hedging instruments:              
Fair value hedges                 
Interest rate swaps$993,432
 $1,703
 $53,581
 $993,485
 $4,220
 $65,749
 $800,478
 $3,569
 $64,785
Total993,432
 1,703
 53,581
 993,485
 4,220
 65,749
 800,478
 3,569
 64,785
Netting adjustments (1)
 896
 896
 
 1,869
 1,869
 
 
 
Net derivatives in the balance sheet$993,432
 $807
 $52,685
 $993,485
 $2,351
 $63,880
 $800,478
 $3,569
 $64,785
                  
Derivatives not designated as hedging instruments              
Foreign currency contracts$85,940
 $42,749
 $42,586
 $18,421
 $9,236
 $9,185
 $66,364
 $33,274
 $33,090
Interest rate swaps36,969
 776
 776
 
 
 
 
 
 
Total$122,909
 $43,525
 $43,362
 $18,421
 $9,236
 $9,185
 $66,364
 $33,274
 $33,090

(1)Netting adjustments represent the amounts recorded to convert the Company's derivative balances from a gross basis to a net basis in accordance with the applicable accounting guidance.


The following table summarizes the gains (losses) on fair value hedges for the years ended December 31, 2016, and 2015 all of which were recorded in non-interest income.
 Year Ended December 31,
 2016 2015
 (in thousands)
Hedge of Fixed Rate Loans (1)   
Gain (loss) on "pay fixed" swap$15,582
 $(6,965)
Gain (loss) on receive fixed rate loans(15,519) 7,044
Net ineffectiveness$63
 $79
Hedge of Fixed Rate Subordinated Debt Issuances (1)   
Gain (loss) on "receive fixed" swap$(15,894) $3,569
Gain (loss) on subordinated debt15,894
 (3,569)
Net ineffectiveness$
 $
(1)The fair value of derivatives contracts are carried as other assets and other liabilities in the Consolidated Balance Sheets. The effective portion of hedging gains (losses) is recorded as basis adjustments to the underlying hedged asset or liability. For 2016 and 2015, gains and losses on both the hedging derivative and hedged item are recorded through non-interest income with a resulting net income impact for the amount of ineffectiveness. Due to adoption of ASU 2017-12, effective January 1, 2017, there were no amounts recorded in net income related to hedge ineffectiveness in 2017.
Counterparty Credit Risk
Like other financial instruments, derivatives contain an element of credit risk. This risk is measured as the expected positive replacement value of the contracts. Management generally enters into bilateral collateral and master netting agreements that provide for the net settlement of all contracts with the same counterparty. Additionally, management monitors counterparty credit risk exposure on each contract to determine appropriate limits on the Company's total credit exposure across all product types. In general, the Company has a zero credit threshold with regard to derivative exposure with counterparties. Management reviews the Company's collateral positions on a daily basis and exchanges collateral with counterparties in accordance with standard ISDA documentation and other related agreements. The Company generally holds collateral in the form of cash deposits or highly rated securities issued by the U.S. Treasury or government-sponsored enterprises, such as GNMA, FNMA, and FHLMC. The total collateral netted against net derivative liabilities totaled $55.5 million at December 31, 2019, $44.9 million at December 31, 2018, and $53.6 million at December 31, 2017, $65.7 million at December 31, 2016, and $61.7 million at December 31, 2015.2017.
The following table summarizes the Company's largest exposure to an individual counterparty at the dates indicated:
 December 31, December 31,
 2017 2016 2015 2019 2018 2017
 (in thousands) (in thousands)
Largest gross exposure (derivative asset) to an individual counterparty $893
 $2,351
 $3,569
 $1,757
 $1,411
 $893
Collateral posted by this counterparty 
 1,691
 4,680
 1,610
 
 
Derivative liability with this counterparty 40,340
 
 
 
 23,906
 40,340
Collateral pledged to this counterparty 60,476
 
 1,340
 
 25,761
 60,476
Net exposure after netting adjustments and collateral $
 $660
 $229
 $147
 $
 $

Credit Risk Contingent Features
Management has entered into certain derivative contracts that require the Company to post collateral to the counterparties when these contracts are in a net liability position. Conversely, the counterparties may be required to post collateral when these contracts are in a net asset position. The amount of collateral to be posted is based on the amount of the net liability and exposure thresholds. As of December 31, 2017, 2016,2019, 2018, and 20152017, the aggregate fair value of all derivative contracts with credit risk contingent features (i.e., those containing collateral posting provisions) held by the Company that were in a net liability position totaled $52.7$55.5 million, $63.9$44.9 million, and $64.8$53.6 million, respectively. As of December 31, 2017,2019, the Company was in an over-collateralized net position of $25.0$29.2 million after considering $78.6$84.7 million of collateral held in the form of cash and securities. As of December 31, 20162018 and 2015,2017, the Company was in an over-collateralized position of $24.3$7.6 million and $15.5$25.0 million, respectively.

13. EARNINGS PER SHARE
Diluted EPS is based on the weighted average outstanding common shares during eachthe period, including common stock equivalents. Basic EPS is based on the weighted average outstanding common shares during the period.
The following table presents the calculation of basic and diluted EPS: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands, except per share amounts)
Weighted average shares - basic 102,667
 104,669
 104,179
Dilutive effect of stock awards 466
 701
 818
Weighted average shares - diluted 103,133
 105,370
 104,997
Net income $499,171
 $435,788
 $325,492
Earnings per share - basic 4.86
 4.16
 3.12
Earnings per share - diluted 4.84
 4.14
 3.10
  Year Ended December 31,
  2017 2016 2015
  (in thousands, except per share amounts)
Weighted average shares - basic 104,179
 103,042
 94,570
Dilutive effect of stock awards 818
 801
 649
Weighted average shares - diluted 104,997
 103,843
 95,219
Net income available to common stockholders $325,492
 $259,798
 $193,494
Earnings per share - basic 3.12
 2.52
 2.05
Earnings per share - diluted 3.10
 2.50
 2.03

The Company had no0 anti-dilutive stock options outstanding as of December 31, 20172019 and 2016.2018.

14. INCOME TAXES
The provision for income taxes charged to operations consists of the following: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Current $110,184
 $91,249
 $37,854
Deferred (5,129) (16,709) 88,471
Total tax provision $105,055
 $74,540
 $126,325
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Current $37,854
 $93,737
 $61,040
Deferred 88,471
 7,644
 3,254
Total tax provision $126,325
 $101,381
 $64,294

The reconciliation between the statutory federal income tax rate and the Company’s effective tax rate areis summarized as follows: 
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Income tax at statutory rate $126,888
 $107,169
 $158,136
Increase (decrease) resulting from:      
State income taxes, net of federal benefits 11,004
 9,015
 9,765
Tax-exempt income (19,527) (18,322) (26,403)
Change in federal rate applied to deferred items 
 
 (10,411)
Federal NOL and other carryback items 
 (15,341) 
Excise tax 
 (137) 9,689
Investment tax credits (15,000) (6,673) (7,361)
Other, net 1,690
 (1,171) (7,090)
Total tax provision $105,055
 $74,540
 $126,325

  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Income tax at statutory rate $158,136
 $126,413
 $90,489
Increase (decrease) resulting from:      
State income taxes, net of federal benefits 9,765
 8,046
 5,783
Bank owned life insurance (1,351) (1,317) (1,365)
Tax-exempt income (26,403) (22,425) (20,226)
Change in federal rate applied to deferred items (10,411) 
 
Excise tax 9,689
 
 
Deferred tax asset valuation allowance 
 
 (2,290)
Low income housing tax credits (7,361) (6,153) (5,223)
Other, net (5,739) (3,183) (2,874)
Total tax provision $126,325
 $101,381
 $64,294
TheFor the years ended December 31, 2019, 2018, and 2017 the Company's effective tax rate for the year ended December 31, 2017 was 17.39%, 14.61%, and 27.96%, compared to 28.07% for the year ended December 31, 2016, and 24.87% for the year ended December 31, 2015. There was not a significant change in the effective tax rate from 2017 compared to 2016.respectively. The increase in the effective tax rate from 2015 compared2018 to 20162019 is due primarily to management's decision during the third quarter of 2018 to carryback its 2017 federal NOLs. The decrease in the effective tax rate from 2017 to 2018 is due primarily to the increasedecrease in pre-taxthe federal statutory rate effective in 2018, a reduction in excise taxes, and management's decision to carryback its 2017 federal NOLs. The reduction in excise taxes from 2017 to 2018 resulted from not deferring WAB's 2018 dividend from BW Real Estate as was the case in 2017. The Company's 2017 federal NOLs resulted from the acceleration of deductions into and deferral of revenue from 2017. As the federal income without proportional increases to favorable tax rate items for the year ended December 31, 2016 compared to 2015.
The 2017 Tax Cuts and Jobs Act significantly changes how the United States taxes corporations. This new legislation lowered the statutory corporate tax rate from 35% to 21%, but it also limited or eliminated certain deductions. The Company has analyzed and interpreted the current and future impacts of the Act and recorded the effects in its financial statements as of December 31, 2017. However, the legislation remains subject to potential amendments, technical corrections and further guidance at both the federal and state levels. Further, in connection with the filing of its tax return, the Company has the ability to change some of the elections it has appliedwas higher in the calculation of the year-end tax provision, such as NOL carryback/carryovers and depreciation. If a material adjustment is needed for any of these items, it will be included in the provision for income taxes in the period inyears to which the change occurs.

carryback is applicable, a larger tax benefit results from the decision to carryback the 2017 federal NOLs, rather than carry forward these losses to future taxable years.

The cumulative tax effects of the primary temporary differences are shown in the following table:
  December 31,
  2019 2018
  (in thousands)
Deferred tax assets:  
Allowance for credit losses $44,809
 $42,833
Lease liability (1) 20,264
 
Stock-based compensation 7,351
 8,718
Net operating loss carryovers 5,619
 6,255
Unrealized loss on AFS securities 
 16,047
Other 19,361
 20,687
Total gross deferred tax assets 97,404
 94,540
Deferred tax asset valuation allowance 
 (2,373)
Total deferred tax assets 97,404
 92,167
Deferred tax liabilities:    
Right of use asset (1) (18,823) 
Unrealized gain on AFS securities (7,264) 
Unrealized gain on junior subordinated debt (1,229) (5,833)
Deferred loan costs (10,789) (9,528)
Insurance premiums (4,514) (6,527)
Premises and equipment (8,372) (1,201)
Estimated loss reserve (14,890) (31,592)
50(d) income (6,792) (1,624)
Other (6,706) (3,872)
Total deferred tax liabilities (79,379) (60,177)
Deferred tax assets, net $18,025
 $31,990

  December 31,
  2017 2016
  (in thousands)
Deferred tax assets:  
Allowance for credit losses $37,851
 $50,860
Fair market value adjustment related to acquired loans 
 7,941
Stock-based compensation 8,335
 12,302
Net operating loss carryovers 34,710
 9,024
Tax credit carryovers 24,171
 
Startup costs and other amortization 2,495
 4,216
Allowance for other assets acquired through foreclosure, net 1,459
 3,230
Section 382 limited NUBILs 
 3,251
Premises and equipment 1,428
 
Unrealized loss on AFS securities 4,117
 9,149
Other 10,239
 13,679
Total gross deferred tax assets 124,805
 113,652
Deferred tax liabilities:    
Deferred income (68,799) 
Unrealized gain on debt instruments measured at fair value (2,661) (6,132)
Deferred loan costs (6,594) (3,212)
Insurance premiums (35,789) 
Core deposit intangible (2,809) (4,949)
Premises and equipment 
 (449)
Unrealized gains on financial instruments measured at fair value (1,396) (2,200)
Other (977) (1,516)
Total deferred tax liabilities (119,025) (18,458)
Deferred tax assets, net $5,780
 $95,194
(1)Upon adoption of ASC 842 on January 1, 2019, a lease liability DTA and a right of use asset DTL were established and totaled $9.7 million and $9.1 million, respectively. While there may be significant changes in the separate DTA and DTL balances of these two items, the aggregate effect of these two changes will generally offset and therefore are not discussed as significant changes to the net deferred balance.
Deferred tax assets and liabilities are included in the Consolidated Financial Statements at currently enacted income tax rates applicable to the period in which the deferred tax assets or liabilities are expected to be reversed. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.
For the year endedNet deferred tax assets decreased $14.0 million to $18.0 million from December 31, 2017, the2018. This overall decrease in net deferred tax assets decreased $89.4 million to $5.8 million. This overall decrease in the net deferred tax asset was primarily the result of deferring taxable incomethe increases in the fair market value of AFS securities. In addition, there was a large decrease to future periods and accelerating deductionsthe overall estimated loss reserve, which were only partiallywas largely offset by the creation of NOLincreases to DTLs related to premises and equipment and income associated with tax credit carryovers and the revaluation of deferred taxes under the 2017 Tax Cuts and Jobs Act.credits for lease pass-through transactions (50(d) income).
Although realization is not assured, the Company believes that the realization of the recognized net deferred tax asset of $5.8$18.0 million at December 31, 20172019 is more-likely-than-not based on expectations as to future taxable income and based on available tax planning strategies within the meaning of ASC 740, Income Taxes, that could be implemented if necessary to prevent a carryover from expiring.
At each of the periods ended December 31, 2017 and 2016, the Company had no deferred tax valuation allowance.
As of December 31, 2017,2019, the Company has 0 deferred tax valuation allowance. As of December 31, 2018, the Company had a deferred tax valuation allowance of $2.4 million related to net capital loss carryovers.
As of December 31, 2019, the Company’s gross federal NOL carryovers, a portionall of which are subject to limitations under Section 382 of the IRC, totaled approximately $169.5$45.8 million, for which a deferred tax asset of $31.1$5.5 million has been recorded, reflecting the expected benefit of these federal NOL carryovers.carryovers remaining after application of the Section 382 limitation. The Company also has varying gross amounts of state NOL carryovers, with California and Arizona being the most significant.primarily in Arizona. The ending gross California and Arizona NOL carryovers totaled approximately $25.0 million and $17.3 million, respectively.$2.2 million. A deferred tax asset of $3.6$0.2 million has been recorded to reflect the expected benefit of all state NOL carryovers.carryovers remaining. If not utilized, a portion of the federal and state NOL carryovers will begin to expire in 2028 and 2023, respectively.2024. As of December 31, 2017,2019, the Company’sCompany had 0 federal tax credit carryovers and $1.4 million of state tax credit carryovers totaled $23.1 million and $1.1 million, respectively.carryovers. If not utilized, a portion of the federal and state tax credit carryovers will begin to expire in 2038 and 2023, respectively.2023. In management’s opinion, it is more-likely-than-not that the results of future operations will generate sufficient taxable income to realize all of the deferred tax benefits related to these NOL and tax credit carryovers.

The Company files income tax returns in the U.S. federal jurisdiction and in various states. With few exceptions, the Company is no longer subject to U.S. federal, state, or local income tax examinations by tax authorities for years before 2013.2015.
When tax returns are filed, it is highly certain that somemost positions taken would be sustained upon examination by the taxing authorities, while others are subject to uncertainty about the merits of the position taken or the amount of the position that would be ultimately sustained. The benefit of a tax position is recognized in the Consolidated Financial Statements in the period in which, based on all available evidence, management believes it is more-likely-than-not that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Tax positions taken are not offset or aggregated with other positions. Tax positions that meet the more-likely-than-not recognition threshold are measured as the largest amount of tax benefit that is more than 50% likely of being realized upon settlement with the applicable taxing authority. The portion of the benefits associated with tax positions taken that exceeds the amount measured as described above would beis reflected as a liability for unrecognized tax benefits inon the accompanying Consolidated Balance SheetSheets along with any associated interest and penalties that would be payable to the taxing authorities upon examination.
The total gross activity of unrecognized tax benefits related to the Company's uncertain tax positions are shown in the following table:
 December 31,
 2019 2018
 (in thousands)
Beginning balance$484
 $1,038
Gross increases   
Tax positions in prior periods
 
Current period tax positions1,255
 
Gross decreases   
Tax positions in prior periods
 (247)
Settlements
 (307)
Lapse of statute of limitations
 
Ending balance$1,739
 $484

 December 31,
 2017 2016
 (in thousands)
Beginning balance$1,038
 $1,038
Gross Increases   
Tax positions in prior periods
 
Current period tax positions
 
Gross decreases   
Tax positions in prior periods
 
Settlements
 
Lapse of statute of limitations
 
Ending balance$1,038
 $1,038
During the year ended December 31, 2019, the Company added a new current year position, which resulted in a tax detriment of $0.8 million, inclusive of interest and penalties.
As of December 31, 20172019 and 2016,2018, the total amount of unrecognized tax benefits, net of associated deferred tax benefit,benefits, that would impact the effective tax rate, if recognized, is $0.7 million.$1.1 million and $0.3 million, respectively. The Company anticipates that approximately $0.4$0.1 million of the unrecognized tax benefits will be resolved within the next twelve12 months.
During the years ended December 31, 20172019, 2018, and 2016,2017, the Company recognized no0 additional amounts for interest and penalties. During the year ended December 31, 2015, the Company recognized $0.1 million in penalties and no amounts for interest.
As of December 31, 20172019 and 2016,2018, the Company has accrued a total liabilityliabilities of $0.1 million for penalties and $0.1 million0 amounts for interest.
LIHTC and renewable energy projects
TheAs discussed in "Note 1. Summary of Significant Accounting Policies," the Company investsholds ownership interests in LIHTC fundslimited partnerships and limited liability companies that invest in affordable housing and renewable energy projects. These investments are designed to generate a return primarily through the realization of federal tax credits.credits and deductions. The limited liability entities are considered to be VIEs; however, as a limited partner, the Company is not the primary beneficiary and is not required to consolidate these entities.
At December 31, 2019, the Company’s exposure to loss as a result of its involvement in these entities was limited to $487.3 million, which reflects the Company’s recorded investment in these projects, net of certain unfunded capital commitments, and previously recorded tax credits which remain subject to recapture by taxing authorities. During the years ended December 31, 2019, 2018, and 2017, the Company did not provide financial or other support to these entities that was not contractually required.
Investments in LIHTC and unfundedrenewable energy total $409.4 million and $369.6 million as of December 31, 2019 and 2018, respectively. Unfunded LIHTC and renewable energy obligations are included as part of other assets and other liabilities respectively, inon the Consolidated Balance SheetsSheet and total $267.0$191.0 million and $151.3 million, respectively, as of December 31, 2017, compared to $187.4 million and $84.4$196.3 million as of December 31, 2016.2019 and 2018, respectively. For the years ended December 31, 2019, 2018, and 2017, 2016, and 2015, $25.4$41.5 million, $17.3$35.9 million, and $14.4$25.4 million of amortization related to LIHTC investments was recognized as a component of income tax expense, respectively.

15. COMMITMENTS AND CONTINGENCIES
Unfunded Commitments and Letters of Credit
The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. They involve, to varying degrees, elements of credit risk in excess of amounts recognized inon the Consolidated Balance Sheets.
Lines of credit are obligations to lend money to a borrower. Credit risk arises when the borrower's current financial condition may indicate less ability to pay than when the commitment was originally made. In the case of standby letters of credit, the risk arises from the potential failure of the customer to perform according to the terms of a contract. In such a situation, the third party might draw on the standby letter of credit to pay for completion of the contract and the Company would look to its customer to repay these funds with interest. To minimize the risk, the Company uses the same credit policies in making commitments and conditional obligations as it would for a loan to that customer.
Standby lettersLetters of credit and financial guarantees are commitments issued by the Company to guarantee the performance of a customer to a third party in borrowing arrangements. The Company generally has recourse to recover from the customer any amounts paid under the guarantees. Typically, letters of credit issued have expiration dates within one year.
A summary of the contractual amounts for unfunded commitments and letters of credit are as follows: 
  December 31,
  2019 2018
  (in thousands)
Commitments to extend credit, including unsecured loan commitments of $895,175 at December 31, 2019 and $770,114 at December 31, 2018 $8,348,421
 $7,556,741
Credit card commitments and financial guarantees 302,909
 237,312
Letters of credit, including unsecured letters of credit of $5,850 at December 31, 2019 and $21,879 at December 31, 2018 175,778
 390,161
Total $8,827,108
 $8,184,214
  December 31,
  2017 2016
  (in thousands)
Commitments to extend credit, including unsecured loan commitments of $364,638 at December 31, 2017 and $360,840 at December 31, 2016 $5,851,158
 $4,428,495
Credit card commitments and financial guarantees 153,752
 115,536
Standby letters of credit, including unsecured letters of credit of $11,664 at December 31, 2017 and $6,431 at December 31, 2016 161,966
 78,576
Total $6,166,876
 $4,622,607

The following table represents the contractual commitments for lines and letters of credit by maturity at December 31, 2017:2019: 
    Amount of Commitment Expiration per Period
  Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years After 5 Years
  (in thousands)
Commitments to extend credit $8,348,421
 $2,873,303
 $3,170,848
 $1,299,506
 $1,004,764
Credit card commitments and financial guarantees 302,909
 302,909
 
 
 
Letters of credit 175,778
 156,375
 18,786
 617
 
Total $8,827,108
 $3,332,587
 $3,189,634
 $1,300,123
 $1,004,764
    Amount of Commitment Expiration per Period
  Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years After 5 Years
  (in thousands)
Commitments to extend credit $5,851,158
 $2,348,898
 $1,998,695
 $500,392
 $1,003,173
Credit card commitments and financial guarantees 153,752
 153,752
 
 
 
Standby letters of credit 161,966
 133,297
 27,426
 1,243
 
Total $6,166,876
 $2,635,947
 $2,026,121
 $501,635
 $1,003,173

Commitments to extend credit are agreements to lend to a customer provided that there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The Company enters into credit arrangements that generally provide for the termination of advances in the event of a covenant violation or other event of default. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the party. The commitments are collateralized by the same types of assets used as loan collateral.
The Company has exposure to credit losses from unfunded commitments and letters of credit. As funds have not been disbursed on these commitments, they are not reported as loans outstanding. Credit losses related to these commitments are included in other liabilities as a separate loss contingency and are not included in the allowance for credit losses reported in "Note 3. Loans, Leases and Allowance for Credit Losses" of these Consolidated Financial Statements. This loss contingency for unfunded loan commitments and letters of credit was $6.2$9.0 millionand $7.0$8.2 million as of December 31, 20172019 and 2016,2018, respectively. Changes to this liability are adjusted through other expense in the Consolidated Income Statement.Statements.

Concentrations of Lending Activities
The Company’s lending activities are driven in large part by the customers served in the market areas where the Company has branch offices in the states of Arizona, Nevada, and California. Despite the geographic concentration of lending activities, the Company does not have a single external customer from which it derives 10% or more of its revenues. The Company monitors concentrations within four broad categories: geography, industry, product, and collateral. The Company's loan portfolio includes significant credit exposure to the CRE market. As of December 31, 20172019 and 2016,2018, CRE related loans accounted for approximately 52%45% and 53%49% of total loans, respectively. Substantially all of these loans are secured by first liens with an initial loan to valueloan-to-value ratio of generally not more than 75%. Approximately 31% and 36% of these CRE loans, excluding construction and land loans, were owner-occupied at eachowner occupied as of the periods ended December 31, 20172019 and 2016.2018, respectively.
Contingencies
The Company is involved in various lawsuits of a routine nature that are being handled and defended in the ordinary course of the Company’s business. Expenses are being incurred in connection with these lawsuits, but in the opinion of management, based in part on consultation with outside legal counsel, the resolution of these lawsuits and associated defense costs will not have a material impact on the Company’s financial position, results of operations, or cash flows.
Lease Commitments
The Company leases the majority of its office locations and many of these leases contain multiple renewal options and
provisions for increased rents. For the years ended December 31, 2017, 2016, and 2015, total rent expense was
$10.4 million, $11.0 million and $8.1 million, respectively.
16. FAIR VALUE ACCOUNTING
The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, the income approach, and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC 825 establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under ASC 825 are described in "Note 1. Summary of Significant Accounting Policies" of these Notes to Consolidated Financial Statements.
In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developedinternally-developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels in the fair value hierarchy are recognized as of the end of the month following the event or change in circumstances that caused the transfer.
Under ASC 825, the Company elected the FVO treatment for junior subordinated debt issued by WAL. This election is irrevocable and results in the recognition of unrealized gains and losses on these items at each reporting date. Due to the Company's election to early adopt an element of ASU 2016-01, effective January 1, 2015, theseThese unrealized gains and losses are recognized as part of other comprehensive income rather than earnings. The Company did not elect FVO treatment for the junior subordinated debt assumed in the Bridge Capital Holdings acquisition in 2015.
All securities for which the fair value measurement option had been elected are included in a separate line item in the Consolidated Balance Sheets as securities measured at fair value. During the year ended December 31, 2017, the Company sold all of its investment securities measured at fair value. No significant gain or loss was recognized upon sale of these securities.

acquisition.
For the years ended December 31, 2019, 2018, and 2017, 2016, and 2015,unrealized gains and losses from fair value changes on securities and junior subordinated debt were as follows:
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Unrealized gains/(losses) $(13,001) $7,550
 $(5,824)
Changes included in OCI, net of tax (9,804) 5,693
 (3,604)

  Changes in Fair Values for Items Measured at Fair Value
Pursuant to Election of the Fair Value Option
  Unrealized Gain/(Loss) on Assets and Liabilities Measured at Fair Value, Net Interest Income on Securities Interest Expense on Junior Subordinated Debt Total Changes Included in Current-Period Earnings Total Changes Included in OCI
  (in thousands)
Year Ended December 31, 2017          
Securities measured at fair value $
 $9
 $
 $9
 $
Junior subordinated debt (5,824) 
 (3,221) (3,221) (3,604)
Total $(5,824) $9

$(3,221)
$(3,212)
$(3,604)
Year Ended December 31, 2016          
Securities measured at fair value $(18) $41
 $
 $23
 $
Junior subordinated debt (3,482) 
 (2,828) (2,828) (2,077)
Total $(3,500)
$41

$(2,828)
$(2,805)
$(2,077)
Year Ended December 31, 2015          
Securities measured at fair value $(32) $54
 $
 $22
 $
Junior subordinated debt (6,491) 
 (2,151) (2,151) (4,276)
Total $(6,523)
$54

$(2,151)
$(2,129)
$(4,276)
Interest income on securities measured at fair value is accounted for similarly to those classified as AFS. Any premiums or discounts are recognized in interest income over the term of the securities. Interest expense on junior subordinated debt is determined under a constant yield calculation.
Fair value on a recurring basis
Financial assets and financial liabilities measured at fair value on a recurring basis include the following:
Securities measured at fair value: All of the Company’s securities measured at fair value, which consisted of MBS, were reported at fair value utilizing Level 2 inputs as of December 31, 2016 in the same manner as described below for AFS securities.
AFS securities: Preferred stock, CRA investments, and certain corporate debt securities Securities classified as AFS are reported at fair value utilizing Level 1 inputs. Other securities classified as AFS are reported at fair value utilizingand Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include quoted prices in active markets, dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information, and the bond’s terms and conditions, among other things.
Equity securities: Preferred stock and CRA investments are reported at fair value utilizing Level 1 inputs.
Independent pricing service: The Company's independent pricing service provides pricing information on the majority of the Company's Level 1 and 2 AFS securities. For a small subset of securities, other pricing sources are used, including observed prices on publicly-traded securities and dealer quotes. Management independently evaluates the fair value measurements received from the Company's third partythird-party pricing service through multiple review steps. First, management reviews what has transpired in the marketplace with respect to interest rates, credit spreads, volatility, and mortgage rates, among other things, and develops an expectation of changes to the securities' valuations from the previous quarter. Then, management obtains market values from additional sources. The pricing service provides management with observable market data including interest rate curves and mortgage prepayment speed grids, as well as dealer quote sheets, new bond offering sheets, and historical trade documentation. Management reviews the assumptions and decides whether they are reasonable. Management may compare interest rates, credit spreads, and prepayments speeds used as part of the assumptions to those that management believes are reasonable.
Management may price securities using the provided assumptions to determine whether they can develop similar prices on like securities. Any discrepancies between management’s review and the prices provided by the vendor are discussed with the vendor and the Company’s other valuation advisors. Last, management selects a sample of investment securities and compares the values provided by its primary third partythird-party pricing service to the market values obtained from secondary sources, including other pricing services and safekeeping statements, and evaluates those with notable variances. In instances where there are discrepancies in pricing from various sources and management expectations, management may manually price securities using currently observed market data to determine whether they can develop similar prices or may utilize bid information from broker dealers. Any remaining discrepancies between management's review and the prices provided by the vendor are discussed with the vendor and/or the Company's other valuation advisors.
Annually, the Company receives an SSAE 16 report from its independent pricing service attesting to the controls placed on the operations of the service from its auditor.

Interest rate swaps: Interest rate swaps are reported at fair value utilizing Level 2 inputs. The Company obtains dealer quotations to value its interest rate swaps.
Junior subordinated debt: The Company estimates the fair value of its junior subordinated debt using a discounted cash flow model which incorporates the effect of the Company’s own credit risk in the fair value of the liabilities (Level 3). The Company’s cash flow assumptions are based on contractual cash flows as the Company anticipates that it will pay the debt according to its contractual terms.
As of December 31, 2017, the Company estimates the discount rate at 5.61%, which represents an implied credit spread of 3.92% plus three-month LIBOR (1.69%). As of December 31, 2016, the Company estimated the discount rate at 5.66%, which was a 4.66% credit spread plus three-month LIBOR (1.00%).
The fair value of assets and liabilities measured at fair value on a recurring basis was determined using the following inputs as of the periods presented: 
 Fair Value Measurements at the End of the Reporting Period Using: Fair Value Measurements at the End of the Reporting Period Using:
 Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value Quoted Prices in Active Markets for Identical Assets
(Level 1)
 Significant Other Observable Inputs
(Level 2)
 Significant Unobservable Inputs
(Level 3)
 Fair Value
 (in thousands) (in thousands)
December 31, 2017        
December 31, 2019        
Assets:                
Available-for-sale        
Available-for-sale debt securities        
CDO $
 $21,857
 $
 $21,857
 $
 $10,142
 $
 $10,142
Commercial MBS issued by GSEs 
 109,077
 
 109,077
 
 94,253
 
 94,253
Corporate debt securities 
 103,483
 
 103,483
 5,127
 94,834
 
 99,961
CRA investments 50,616
 
 
 50,616
Preferred stock 53,196
 
 
 53,196
Municipal securities 
 7,773
 
 7,773
Private label residential MBS 
 868,524
 
 868,524
 
 1,129,227
 
 1,129,227
Residential MBS issued by GSEs 
 1,689,295
 
 1,689,295
 
 1,412,060
 
 1,412,060
Tax-exempt 
 510,910
 
 510,910
 
 554,855
 
 554,855
Trust preferred securities 
 28,617
 
 28,617
 27,040
 
 
 27,040
U.S. government sponsored agency securities 
 61,462
 
 61,462
 
 10,000
 
 10,000
U.S. treasury securities 
 2,482
 
 2,482
 
 999
 
 999
Total AFS securities $103,812
 $3,395,707
 $
 $3,499,519
Total AFS debt securities $32,167
 $3,314,143
 $
 $3,346,310
Equity securities        
CRA investments $52,504
 $
 $
 $52,504
Preferred stock 86,197
 
 
 86,197
Total equity securities $138,701
 $
 $
 $138,701
Loans - HFS $
 $21,803
 $
 $21,803
Derivative assets (1) $
 $45,228
 $
 $45,228
 
 1,903
 
 1,903
Liabilities:                
Junior subordinated debt (2) $
 $
 $56,234
 $56,234
 $
 $
 $61,685
 $61,685
Derivative liabilities (1) 
 96,943
 
 96,943
 
 55,570
 
 55,570
(1)Derivative assets and liabilities relate to interest rate swaps, and foreign currency contracts, see "Note 12. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $41,919$53,292 and the net carrying value of subordinated debt is decreased by $9,959$401 as of December 31, 2017,2019 for the effective portion of the hedge, which relates to the fair value of the hedges put in place to mitigate against fluctuations in interest rates.
(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.

  Fair Value Measurements at the End of the Reporting Period Using:
  
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Significant Other Observable Inputs
(Level 2)
 
Significant Unobservable Inputs
(Level 3)
 
Fair
Value
  (in thousands)
December 31, 2018        
Assets:        
Available-for-sale debt securities        
CDO $
 $15,327
 $
 $15,327
Commercial MBS issued by GSEs 
 100,106
 
 100,106
Corporate debt securities 
 99,380
 
 99,380
Private label residential MBS 
 924,594
 
 924,594
Residential MBS issued by GSEs 
 1,530,124
 
 1,530,124
Tax-exempt 
 538,668
 
 538,668
Trust preferred securities 
 28,617
 
 28,617
U.S. government sponsored agency securities 
 38,188
 
 38,188
U.S. treasury securities 
 1,984
 
 1,984
Total AFS debt securities $
 $3,276,988
 $
 $3,276,988
Equity securities        
CRA investments $51,142
 $
 $
 $51,142
Preferred stock 63,919
 
 
 63,919
Total equity securities $115,061
 $
 $
 $115,061
Derivative assets (1) $
 $2,643
 $
 $2,643
Liabilities:        
Junior subordinated debt (2) $
 $
 $48,684
 $48,684
Derivative liabilities (1) 
 45,120
 
 45,120
  Fair Value Measurements at the End of the Reporting Period Using:
  
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Significant Other Observable Inputs
(Level 2)
 
Significant Unobservable Inputs
(Level 3)
 
Fair
Value
  (in thousands)
December 31, 2016        
Assets:        
Measured at fair value        
Residential MBS issued by GSEs $
 $1,053
 $
 $1,053
Available-for-sale        
Collateralized debt obligations $
 $13,490
 $
 $13,490
Commercial MBS issued by GSEs 
 117,792
 
 117,792
Corporate debt securities 20,000
 44,144
 
 64,144
CRA investments 37,113
 
 
 37,113
Preferred stock 94,662
 
 
 94,662
Private label residential MBS 
 433,685
 
 433,685
Residential MBS issued by GSEs 
 1,355,205
 
 1,355,205
Tax-exempt 
 408,233
 
 408,233
Trust preferred securities 
 26,532
 
 26,532
U.S. government sponsored agency securities 
 56,022
 
 56,022
U.S. treasury securities 
 2,502
 
 2,502
Total AFS securities $151,775
 $2,457,605
 $
 $2,609,380
Loans - HFS $
 $18,909
 $
 $18,909
Derivative assets (1) 
 13,456
 
 13,456
Liabilities:        
Junior subordinated debt (2) $
 $
 $50,410
 $50,410
Derivative liabilities (1) 
 74,934
 
 74,934

(1)Derivative assets and liabilities relate to interest rate swaps, and foreign currency contracts, see "Note 12. Derivatives and Hedging Activities." In addition, the carrying value of loans is increased by $48,161$23,039 and the net carrying value of subordinated debt is decreased by $12,325$19,691 as of December 31, 2016,2018, which relates to the effective portion of the hedges put in place to mitigate against fluctuations in interest rates.
(2)Includes only the portion of junior subordinated debt that is recorded at fair value at each reporting period pursuant to the election of FVO treatment.
For the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, the change in Level 3 assets and liabilities measured at fair value on a recurring basis was as follows: 
  Junior Subordinated Debt
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Beginning balance $(50,410) $(46,928) $(40,437)
Transfers into Level 3 
 
 
Total gains (losses) for the period      
Included in other comprehensive income (1) (5,824) (3,482) (6,491)
Ending balance $(56,234) $(50,410) $(46,928)
  Junior Subordinated Debt
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Beginning balance $(48,684) $(56,234) $(50,410)
Change in fair value (1) (13,001) 7,550
 (5,824)
Ending balance $(61,685) $(48,684) $(56,234)
(1)DueUnrealized gains/(losses) attributable to the Company's election to early adopt an element of ASU 2016-01, changes in the fair value of junior subordinated debt are presentedrecorded as part of OCI, rather than earnings effective January 1, 2015. Accordingly, total losses for 2015 are included in the other comprehensive income line, Unrealized gain (loss) on junior subordinated debt, which is net of tax. The above amount representstax, and totaled $(9.8) million, $5.7 million, and $(3.6) million for the gross loss from changes in fair value of junior subordinated debt.years ended December 31, 2019, 2018, and 2017, respectively.

  CDO Securities
  Year Ended December 31,
  2016 2015
  (in thousands)
Beginning balance $10,060
 $11,445
Transfers into Level 3 
 
Transfers out of Level 3 (11,274) 
Total gains (losses) for the period    
Included in other comprehensive income (1) 1,214
 (1,385)
Ending balance $
 $10,060
(1)Total gains (losses) for the period are included in the other comprehensive income line, Unrealized gain (loss) on AFS securities.
The Company transferred all CDO securities from Level 3 to Level 2 during the year ended December 31, 2016 as a result of an increase in the availability and reliability of the observable inputs utilized in the securities' fair value measurement. The Company recognized this transfer between levels on October 31, 2016, in accordance with its policy to recognize transfers between levels in the fair value hierarchy as of the end of the month following the event or change in circumstance that caused the transfer.
For Level 3 assets and liabilities measured at fair value on a recurring basis as of December 31, 20172019 and 2016,2018, the significant unobservable inputs used in the fair value measurements were as follows: 
  December 31, 2017 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $56,234
 Discounted cash flow Implied credit rating of the Company 5.61%
  December 31, 2019 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $61,685
 Discounted cash flow Implied credit rating of the Company 5.09%
  December 31, 2016 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $50,410
 Discounted cash flow Implied credit rating of the Company 5.66%
  December 31, 2018 Valuation Technique Significant Unobservable Inputs Input Value
  (in thousands)      
Junior subordinated debt $48,684
 Discounted cash flow Implied credit rating of the Company 7.82%
The significant unobservable inputsinput used in the fair value measurement of the Company’s junior subordinated debt as of December 31, 20172019 and 20162018 was the implied credit risk for the Company, calculated as the difference between the 20-year15-year 'BB' rated financial index over the corresponding swap index.

As of December 31, 2019, the Company estimates the discount rate at 5.09%, which represents an implied credit spread of 3.18% plus three-month LIBOR (1.91%). As of December 31, 2018, the Company estimated the discount rate at 7.82%, which was a 5.01% credit spread plus three-month LIBOR (2.81%).
Fair value on a nonrecurring basis
Certain assets are measured at fair value on a nonrecurring basis. That is, the assets are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following table presents such assets carried on the balance sheet by caption and by level within the ASC 825 hierarchy:
  Fair Value Measurements at the End of the Reporting Period Using
  Total 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Active Markets for Similar Assets
(Level 2)
 
Unobservable Inputs
(Level 3)
  (in thousands)
As of December 31, 2019        
Impaired loans with specific valuation allowance $18,203
 $
 $
 $18,203
Impaired loans without specific valuation allowance (1) 92,069
 
 
 92,069
Other assets acquired through foreclosure 13,850
 
 
 13,850
As of December 31, 2018        
Impaired loans with specific valuation allowance $305
 $
 $
 $305
Impaired loans without specific valuation allowance (1) 91,821
 
 
 91,821
Other assets acquired through foreclosure 17,924
 
 
 17,924
  Fair Value Measurements at the End of the Reporting Period Using
  Total 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Active Markets for Similar Assets
(Level 2)
 
Unobservable Inputs
(Level 3)
  (in thousands)
As of December 31, 2017:        
Impaired loans with specific valuation allowance $13,709
 $
 $
 $13,709
Impaired loans without specific valuation allowance (1) 63,607
 
 
 63,607
Other assets acquired through foreclosure 28,540
 
 
 28,540
As of December 31, 2016:        
Impaired loans with specific valuation allowance $6,670
 $
 $
 $6,670
Impaired loans without specific valuation allowance (1) 60,738
 
 
 60,738
Other assets acquired through foreclosure 47,815
 
 
 47,815

(1)Net of loan balances with charge-offs of $15.6$3.3 million and $27.6$19.4 million as of December 31, 20172019 and 2016,2018, respectively.
For Level 3 assets measured at fair value on a nonrecurring basis as of December 31, 20172019 and 2016,2018, the significant unobservable inputs used in the fair value measurements were as follows:
December 31, 2017 Valuation Technique(s) Significant Unobservable Inputs RangeDecember 31, 2019 Valuation Technique(s) Significant Unobservable Inputs Range
(in thousands) (in thousands) 
Impaired loans$77,316
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%$110,272
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0% Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0%
 Scheduled cash collections Loss given default 0% to 20.0%  Scheduled cash collections Probability of default 0% to 20.0%
 Proceeds from non-real estate collateral Loss given default 0% to 70.0%  Proceeds from non-real estate collateral Loss given default 0% to 70.0%
Other assets acquired through foreclosure28,540
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%13,850
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%

December 31, 2016 Valuation Technique(s) Significant Unobservable Inputs RangeDecember 31, 2018 Valuation Technique(s) Significant Unobservable Inputs Range
(in thousands) (in thousands) 
Impaired loans$67,408
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%$92,126
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%
Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0% Discounted cash flow method Discount rate Contractual loan rate 4.0% to 7.0%
 Scheduled cash collections Loss given default 0% to 20.0%  Scheduled cash collections Probability of default 0% to 20.0%
 Proceeds from non-real estate collateral Loss given default 0% to 70.0%  Proceeds from non-real estate collateral Loss given default 0% to 70.0%
Other assets acquired through foreclosure47,815
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%17,924
 Collateral method Third party appraisal Costs to sell 4.0% to 10.0%


Impaired loans: The specific reserves for collateral dependent impaired loans are based on collateral value, net of estimated disposition costs and other identified quantitative inputs. Collateral value is determined based on independent third-party appraisals or internally-developed discounted cash flow analyses. Appraisals may utilize a single valuation approach or a combination of approaches, including comparable sales and the income approach. Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. In addition, when adjustments are made to an appraised value to reflect various factors such as the age of the appraisal or known changes in the market or the collateral, such valuation inputs are considered unobservable and the fair value measurement is categorized as a Level 3 measurement. Internal discounted cash flow analyses are also utilized to estimate the fair value of impaired loans, which considers internally-developed, unobservable inputs such as discount rates, default rates, and loss severity.
Total Level 3 impaired loans had an estimated fair value of $77.3$110.3 million and $67.4$92.1 million at December 31, 20172019 and 2016,2018, respectively. Impaired loans with a specific valuation allowance had a gross estimated fair value of $19.3$21.0 million and $10.9$1.0 million at December 31, 20172019 and 2016,2018, respectively, which was reduced by a specific valuation allowance of $5.6$2.8 million and $4.2$0.7 million, respectively.
Other assets acquired through foreclosure: Other assets acquired through foreclosure consist of properties acquired as a result of, or in-lieu-of, foreclosure. These assets are initially reported at the fair value determined by independent appraisals using appraised value less estimated cost to sell. Such properties are generally re-appraised every twelve12 months. There is risk for subsequent volatility. Costs relating to the development or improvement of the assets are capitalized and costs relating to holding the assets are charged to expense.
Fair value is determined, where possible, using market prices derived from an appraisal or evaluation, which are considered to be Level 2. However, certain assumptions and unobservable inputs are often used by the appraiser, therefore qualifying the assets as Level 3 in the fair value hierarchy. When significant adjustments are based on unobservable inputs, such as when a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, the resulting fair value measurement has been categorized as a Level 3 measurement. The Company had $28.5$13.9 million and $47.8$17.9 million of such assets at December 31, 20172019 and 2016,2018, respectively.
Credit vs. non-credit losses
Under the provisions of ASC 320, Investments-Debt and Equity Securities, OTTI is separated into the amount of total impairment related to the credit loss and the amount of the total impairment related to all other factors. The amount of the total OTTI related to the credit loss is recognized in earnings. The amount of the total impairment related to all other factors is recognized in OCI.
For the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, the Company determined that nothere were 0 securities that experienced credit losses.
There is no OTTI balance recognized in comprehensive income as of December 31, 20172019 and 2016.2018.

FAIR VALUE OF FINANCIAL INSTRUMENTS
The estimated fair value of the Company’s financial instruments is as follows: 
  December 31, 2019
  Carrying Amount Fair Value
   Level 1 Level 2 Level 3 Total
  (in thousands)
Financial assets:          
Investment securities:          
HTM $485,107
 $
 $516,261
 $
 $516,261
AFS 3,346,310
 32,167
 3,314,143
 
 3,346,310
Equity securities 138,701
 138,701
 
 
 138,701
Derivative assets 1,903
 
 1,903
 
 1,903
Loans, net 20,955,499
 
 
 21,256,462
 21,256,462
Accrued interest receivable 108,694
 
 108,694
 
 108,694
Financial liabilities:          
Deposits $22,796,493
 $
 $22,813,265
 $
 $22,813,265
Customer repurchase agreements 16,675
 
 16,675
 
 16,675
Qualifying debt 393,563
 
 332,635
 74,155
 406,790
Derivative liabilities 55,570
 
 55,570
 
 55,570
Accrued interest payable 24,661
 
 24,661
 
 24,661
  December 31, 2017
  Carrying Amount Fair Value
   Level 1 Level 2 Level 3 Total
  (in thousands)
Financial assets:          
Investment securities:          
HTM $255,050
 $
 $256,314
 $
 $256,314
AFS 3,499,519
 103,812
 3,395,707
 
 3,499,519
Derivative assets 45,228
 
 45,228
 
 45,228
Loans, net 14,953,885
 
 14,577,010
 77,316
 14,654,326
Accrued interest receivable 85,517
 
 85,517
 
 85,517
Financial liabilities:          
Deposits $16,972,532
 $
 $16,980,066
 $
 $16,980,066
Customer repurchase agreements 26,017
 
 26,017
 
 26,017
FHLB advances 390,000
 
 390,000
 
 390,000
Qualifying debt 376,905
 
 336,803
 67,210
 404,013
Derivative liabilities 96,943
 
 96,943
 
 96,943
Accrued interest payable 16,366
 
 16,366
 
 16,366
As of December 31, 2017, the Company utilized Level 2 inputs to measure the the fair value of the Company's subordinated debt issuances, compared to Level 3 inputs as of December 31, 2016, due to an increase in the availability and reliability of the observable inputs.
  December 31, 2018
  Carrying Amount Fair Value
   Level 1 Level 2 Level 3 Total
  (in thousands)
Financial assets:          
Investment securities:          
HTM $302,905
 $
 $298,648
 $
 $298,648
AFS 3,276,988
 
 3,276,988
 
 3,276,988
Equity securities 115,061
 115,061
 
 
 115,061
Derivative assets 2,643
 
 2,643
 
 2,643
Loans, net 17,557,912
 
 16,857,852
 92,126
 16,949,978
Accrued interest receivable 101,275
 
 101,275
 
 101,275
Financial liabilities:          
Deposits $19,177,447
 $
 $19,188,216
 $
 $19,188,216
Customer repurchase agreements 22,411
 
 22,411
 
 22,411
Other borrowings 491,000
 
 491,000
 
 491,000
Qualifying debt 360,458
 
 323,572
 57,924
 381,496
Derivative liabilities 45,120
 
 45,120
 
 45,120
Accrued interest payable 20,463
 
 20,463
 
 20,463
  December 31, 2016
  Carrying Amount Fair Value
   Level 1 Level 2 Level 3 Total
  (in thousands)
Financial assets:          
Investment securities:          
HTM $92,079
 $
 $91,966
 $
 $91,966
AFS 2,609,380
 151,775
 2,457,605
 
 2,609,380
Trading 1,053
 
 1,053
 
 1,053
Derivative assets 13,456
 
 13,456
 
 13,456
Loans, net 13,083,732
 
 12,736,336
 67,408
 12,803,744
Accrued interest receivable 70,320
 
 70,320
 
 70,320
Financial liabilities:          
Deposits $14,549,863
 $
 $14,553,931
 $
 $14,553,931
Customer repurchase agreements 41,728
 
 41,728
 
 41,728
FHLB advances 80,000
 
 80,000
 
 80,000
Qualifying debt 367,937
 
 

 375,626
 375,626
Derivative liabilities 74,934
 
 74,934
 
 74,934
Accrued interest payable 15,354
 
 15,354
 
 15,354

Interest rate risk
The Company assumes interest rate risk (the risk to the Company’s earnings and capital from changes in interest rate levels) as a result of its normal operations. As a result, the fair values of the Company’s financial instruments, as well as its future net interest income will change when interest rate levels change and that change may be either favorable or unfavorable to the Company.
Interest rate risk exposure is measured using interest rate sensitivity analysis to determine the Company's change in EVE and net interest income resulting from hypothetical changes in interest rates. If potential changes to EVE and net interest income

resulting from hypothetical interest rate changes are not within the limits established by the BOD, the BOD may direct management to adjust the asset and liability mix to bring interest rate risk within BOD-approved limits.
WAB has an ALCO charged with managing interest rate risk within the BOD-approved limits. Limits are structured to prohibitpreclude an interest rate risk profile that does not conform to both management and BOD risk tolerances.tolerances without ALCO approval. There

is also ALCO reporting at the Parent company level for reviewing interest rate risk for the Company, which gets reported to the BOD and its Finance and Investment Committee.
Fair value of commitments
The estimated fair value of standby letters of credit outstanding at December 31, 20172019 and 20162018 is insignificant. Loan commitments on which the committed interest rates are less than the current market rate are also insignificant at December 31, 20172019 and 2016.2018.
17. REGULATORY CAPITAL REQUIREMENTS
The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements could trigger certain mandatory or discretionary actions that, if undertaken, could have a direct material effect on the Company’s business and financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
Under the Basel III final rules, a capital conservation buffer, comprised of Common Equity Tier 1 capital, was established above the regulatory minimum capital requirements. This capital conservation buffer began being phased in on January 1, 2016 at 0.625% of risk-weighted assets and will increase each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019.
As of December 31, 20172019 and 2016,2018, the Company and the BankBank's capital ratios exceeded the capital levels necessary to be classified as well-capitalized thresholds, as defined by the federal banking agencies. The actual capital amounts and ratios for the Company and the Bank are presented in the following tables as of the periods indicated:
  Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
  (dollars in thousands)
                 
December 31, 2019                
WAL $3,257,874
 $2,775,390
 $25,390,142
 $26,110,275
 12.8% 10.9% 10.6% 10.6%
WAB 3,030,301
 2,703,549
 25,452,261
 26,134,431
 11.9
 10.6
 10.3
 10.6
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5
                 
December 31, 2018                
WAL $2,897,356
 $2,431,320
 $21,983,976
 $22,204,799
 13.2% 11.1% 10.9% 10.7%
WAB 2,628,650
 2,317,745
 22,040,765
 22,209,700
 11.9
 10.5
 10.4
 10.5
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5

  Total Capital Tier 1 Capital Risk-Weighted Assets Tangible Average Assets Total Capital Ratio Tier 1 Capital Ratio Tier 1 Leverage Ratio Common Equity
Tier 1
  (dollars in thousands)

                
December 31, 2017                
WAL $2,460,988
 $2,013,744
 $18,569,608
 $19,624,517
 13.3% 10.8% 10.3% 10.4%
WAB 2,299,919
 2,003,745
 18,664,200
 19,541,990
 12.3
 10.7
 10.3
 10.7
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5

                
December 31, 2016                
WAL $2,107,480
 $1,675,871
 $15,980,092
 $16,868,674
 13.2% 10.5% 9.9% 10.0%
WAB 2,001,081
 1,720,072
 15,888,346
 16,764,327
 12.6
 10.8
 10.3
 10.8
Well-capitalized ratios         10.0
 8.0
 5.0
 6.5
Minimum capital ratios         8.0
 6.0
 4.0
 4.5

18. EMPLOYEE BENEFIT PLANS
The Company has a qualified 401(k) employee benefit plan for all eligible employees. Participants are able to defer between 1% and 75% (up to a maximum of $18,000$19,000 for those under 50 years of age and up to a maximum of $24,000$25,000 for those over 50 years of age in 2017)2019) of their annual compensation. The Company may elect to match a discretionary amount each year, which is 50%75% of the first 6% of the participant’s compensation deferred into the plan. The Company’s contributions to this plan total $3.1$6.2 million, $2.7$5.6 million, and $2.2$3.1 million for the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, respectively.
In addition, the Company maintains a non-qualified 401(k) restoration plan for the benefit of executives of the Company and certain affiliates. Participants are able to defer a portion of their annual salary and receive a matching contribution based

primarily on the contribution structure in effect under the Company’s 401(k) plan, but without regard to certain statutory limitations applicable under the 401(k) plan. The Company’s total contribution to the restoration plan was $131,000, $117,000, and $68,000$0.1 million for the years ended December 31, 2017, 2016,2019, 2018, and 2015, respectively.2017.
In connection with the Bridge acquisition, the Company assumed Bridge's SERP, an unfunded noncontributory defined benefit pension plan. The SERP provides retirement benefits to certain Bridge officers based on years of service and final average salary. The Company uses a December 31st31 measurement date for this plan.
The following table reflects the accumulated benefit obligation and funded status of the SERP:
  December 31,
  2019 2018
  (in thousands)
Change in benefit obligation    
Benefit obligation at beginning of period $9,991
 $8,891
Service cost 632
 614
Interest cost 569
 512
Actuarial losses/(gains) 834
 41
Expected benefits paid (270) (67)
Projected benefit obligation at end of year $11,756
 $9,991
Unfunded projected/accumulated benefit obligation (11,756) (9,991)
Additional liability $
 $
     
Weighted average assumptions to determine benefit obligation    
Discount rate 5.25% 5.75%
Rate of compensation increase 3.00% 3.00%
  December 31,
  2017 2016
  (in thousands)
Change in benefit obligation    
Benefit obligation at beginning of period $8,394
 $7,444
Service cost 580
 680
Interest cost 454
 425
Actuarial (gains)/losses (470) (88)
Expected benefits paid (67) (67)
Projected benefit obligation at end of year $8,891
 $8,394
Unfunded projected/accumulated benefit obligation (8,891) (8,394)
Additional liability $
 $
     
Weighted average assumptions to determine benefit obligation    
Discount rate 5.75% 5.75%
Rate of compensation increase 3.00% 4.00%

The components of net periodic benefit cost recognized for the year ended December 31, 20172019 and 20162018 and the amounts in accumulated other comprehensive income expected to be recognized as components of net periodic benefit cost during 20182020 are as follows:
  Year Ended December 31,
  2020 2019 2018
  (in thousands)
Components of net periodic benefit cost      
Service cost $511
 $632
 $614
Interest cost 612
 569
 512
Amortization of prior service cost 19
 64
 103
Amortization of actuarial (gains)/losses (35) (159) (164)
Net periodic benefit cost $1,107
 $1,106
 $1,065
       
Other comprehensive income (cost) $(16) $(95) $(61)
  Year Ended December 31,
  2018 2017 2016
  (in thousands)
Components of net periodic benefit cost      
Service cost $566
 $580
 $614
Interest cost 509
 454
 425
Amortization of prior service cost 103
 103
 101
Amortization of actuarial (gains)/losses (165) (114) (100)
Net periodic benefit cost $1,013
 $1,023
 $1,040
       
Other comprehensive income (cost) $(62) $(11) $1


19. RELATED PARTY TRANSACTIONS
Principal stockholders, directors, and executive officers of the Company, their immediate family members, and companies they control or own more than a 10% interest in, are considered to be related parties. In the ordinary course of business, the Company engages in various related party transactions, including extending credit and bank service transactions. All related party transactions are subject to review and approval pursuant to the Company's Related Party Transactions policy.
Federal banking regulations require that any extensions of credit to insiders and their related interests not be offered on terms more favorable than would be offered to non-related borrowers of similar creditworthiness. The following table summarizes the aggregate activity in such loans for the periods indicated:
  Year Ended December 31,
  2019 2018
  (in thousands)
Balance, beginning $4,580
 $5,918
New loans 
 
Advances 323
 
Repayments and other (1,091) (1,338)
Balance, ending $3,812
 $4,580
  Year Ended December 31,
  2017 2016
  (in thousands)
Balance, beginning $16,874
 $74,381
New loans 
 637
Advances 1,532
 1,980
Repayments and other (12,488) (60,124)
Balance, ending $5,918
 $16,874

None of these loans are past due, on non-accrual status or have been restructured to provide a reduction or deferral of interest or principal because of deterioration in the financial position of the borrower. There were no loans to a related party that were considered classified loans at December 31, 20172019 or 2016.2018. The interest income associated with these loans was approximately $0.5$0.2 million, $0.6$0.3 million and $2.7$0.5 million for the years ended December 31, 2017, 2016,2019, 2018, and 2015,2017, respectively.
Loan commitments outstanding with related parties totaled approximately $31.2$10.6 million and $46.6$30.7 million at December 31, 20172019 and 2016,2018, respectively.
The Company also accepts deposits from related parties, which totaled $100.5$100.1 million and $97.3$87.9 million at December 31, 20172019 and 2016,2018, respectively, with related interest expense totaling less thanapproximately $0.3 million during the year ended December 31, 2019, and $0.2 million during each of the years ended December 31, 2017, 2016,2018 and 2015.2017.
On April 1, 2017, the Company hired an executive officer who was previously the Managing Partner of an external consulting firm that the Company actively uses for risk management services. Prior to joining the Company, the executive officer sold his interest in this external consulting firm and was paid with a combination of cash and a $1.0 million note that will be paid in equal installments ending in 2019. Expenses to this external consulting firm totaled $1.9 million, $1.6 million, and less than $0.1 million during the years ended December 31, 2017, 2016, and 2015. In addition,Donations, sponsorships, donations and other servicespayments to related parties totaled less than $1.0 million during each of the years ended December 31, 2019 and 2017 2016, and 2015.
20. MERGERS, ACQUISITIONS AND DISPOSITIONS
Acquisition of GE Capital US Holdings, Inc. Loan Portfolio
On April 20, 2016, WAB completed its acquisition of GE Capital US Holdings, Inc.'s domestic select-service hotel franchise finance loan portfolio, paying cash of $1.27 billion. The acquisition was undertaken, in part, to expand the Company's national reach and diversify the Company's loan portfolio.
Effective April 20, 2016, the results of the acquired loan portfolio are reflected in the Company's HFF NBL operating segment. There were no acquisition / restructure expenses related to the acquisition recognizedtotaled $8.1 million during the year ended December 31, 2017. For2018. Total related party payments of $8.1 million for the year ended December 31, 2016, acquisition / restructure expenses related2018 include a donation to the acquisition totaled $4.3Company's charitable foundation of $7.6 million, which consisted of which approximately $0.6a non-cash donation of OREO property of $6.9 million are acquisition related costs as defined by ASC 805. The transaction was accounted for under the acquisition methodand a cash donation of accounting in accordance with ASC 805. Assets purchased and liabilities assumed were recorded at their respective acquisition date estimated fair values. The fair values of assets acquired and liabilities assumed are subject to adjustment during the first twelve months after the acquisition date if additional information becomes available to indicate a more accurate or appropriate value for an asset or liability. $0.7 million.
During the year ended December 31, 2017,2018, the Company sold an OREO property to a related party with a carrying value $0.9 million and recognized measurement period adjustments totaling $0.1a loss of $0.2 million for tax related items. The measurement period foron the HFF acquisition ended on April 20, 2017, and therefore, the fair values of these assets acquired and liabilities assumed were considered final as of that date.sale.

The recognized amounts of identifiable assets acquired and liabilities assumed are as follows:
 April 20, 2016
 (in thousands)
Assets: 
Loans$1,280,997
Other assets3,632
Total assets$1,284,629
Liabilities: 
Other liabilities$12,559
Total liabilities12,559
Net assets acquired$1,272,070
Consideration paid 
Cash$1,272,187
Goodwill$117
Loans acquired consist of loans that are not considered impaired (non-PCI loans) and loans that have shown evidence of credit deterioration since origination (PCI loans) as of the acquisition date. All loans were recorded net of fair value adjustments (interest rate and credit marks), which were determined using discounted contractual cash flow models. The fair value of non-PCI loans acquired totaled $1.19 billion, which was net of interest and credit marks of $43.3 million. The fair value of PCI loans totaled $93.3 million, which is net of interest and credit marks of $17.0 million. See "Note 3. Loans, Leases and Allowance for Credit Losses" of these Notes to Consolidated Financial Statements for additional detail of the acquired loans.
The following table presents pro forma information as if the acquisition was completed on January 1, 2015. The pro forma information includes adjustments for interest income on loans acquired and excludes acquisition / restructure expense. The pro forma information is not necessarily indicative of the results of operations as they would have been had the transactions been effected on the assumed dates.
  Year Ended December 31,
  2016 2015
  (in thousands)
Interest income $707,620
 $593,057
Non-interest income 42,915
 29,768
Net income available to common stockholders 265,731
 231,528
Earnings per share - basic 2.59
 2.51
Earnings per share - diluted 2.57
 2.49

21.20. PARENT COMPANY FINANCIAL INFORMATION
The condensed financial statements of the holding company are presented in the following tables:
WESTERN ALLIANCE BANCORPORATION
Condensed Balance Sheets
 December 31, December 31,
 2017 2016 2019 2018
 (in thousands) (in thousands)
ASSETS:    
Cash and cash equivalents $56,554
 $11,409
 $75,885
 $115,721
Money market investments 
 7
Investment securities - AFS 34,698
 34,562
 12,767
 16,454
Investment securities - equity 47,123
 49,824
Investment in bank subsidiaries 2,291,166
 2,003,550
 3,063,470
 2,568,027
Investment in non-bank subsidiaries 77,457
 46,140
 52,337
 80,019
Other assets 24,378
 29,400
 22,488
 27,200
Total assets $2,484,253
 $2,125,061
 $3,274,070
 $2,857,252
LIABILITIES AND STOCKHOLDERS' EQUITY:        
Qualifying debt $226,993
 $216,838
 $242,000
 $211,376
Accrued interest and other liabilities 27,562
 16,694
 15,322
 32,142
Total liabilities 254,555
 233,532
 257,322
 243,518
Total stockholders’ equity 2,229,698
 1,891,529
 3,016,748
 2,613,734
Total liabilities and stockholders’ equity $2,484,253
 $2,125,061
 $3,274,070
 $2,857,252
WESTERN ALLIANCE BANCORPORATION
Condensed Income Statements
  Year Ended December 31,
  2019 2018 2017
  (in thousands)
Income:      
Dividends from subsidiaries $134,000
 $152,116
 $97,264
Interest income 2,818
 2,905
 2,547
Non-interest income 5,112
 761
 2,470
Total income 141,930
 155,782
 102,281
Expense:      
Interest expense 14,554
 13,949
 11,459
Non-interest expense 19,543
 19,025
 16,293
Total expense 34,097
 32,974
 27,752
Income before income taxes and equity in undistributed earnings of subsidiaries 107,833
 122,808
 74,529
Income tax benefit 5,628
 10,436
 5,229
Income before equity in undistributed earnings of subsidiaries 113,461
 133,244
 79,758
Equity in undistributed earnings of subsidiaries 385,710
 302,544
 245,734
Net income $499,171
 $435,788
 $325,492
  Year Ended December 31,
  2017 2016 2015
  (in thousands)
Income:      
Dividends from subsidiaries $97,264
 $12,795
 $140,900
Interest income 2,547
 3,327
 4,593
Non-interest income 2,470
 2,445
 586
Total income 102,281
 18,567
 146,079
Expense:      
Interest expense 11,459
 6,975
 6,671
Non-interest expense 16,293
 9,221
 11,397
Total expense 27,752
 16,196
 18,068
Income before income taxes and equity in undistributed earnings of subsidiaries 74,529
 2,371
 128,011
Income tax benefit 5,229
 4,399
 5,876
Income before equity in undistributed earnings of subsidiaries 79,758
 6,770
 133,887
Equity in undistributed earnings of subsidiaries 245,734
 253,028
 60,357
Net income 325,492
 259,798
 194,244
Dividends on preferred stock 
 
 750
Net income available to common stockholders $325,492
 $259,798
 $193,494



Western Alliance Bancorporation
Condensed Statements of Cash Flows
 Year Ended December 31,
 2019 2018 2017
 (in thousands)
Cash flows from operating activities:     
Net income$499,171
 $435,788
 $325,492
Adjustments to reconcile net income to net cash provided by operating activities:     
Equity in net undistributed earnings of subsidiaries(385,710) (302,544) (245,734)
Other operating activities, net9,885
 (5,889) 16,921
Net cash provided by operating activities123,346
 127,355
 96,679
Cash flows from investing activities:     
Purchases of securities(10,841) (44,409) (11,765)
Principal pay downs, calls, maturities, and sales proceeds of securities19,032
 11,362
 23,196
Capital contributions to subsidiaries
 
 (50,000)
Other investing activities, net7
 (7) 
Net cash provided by (used in) investing activities8,198
 (33,054) (38,569)
Cash flows from financing activities:     
Share repurchases(120,131) (35,688) 
Other financing activities, net80
 554
 (12,965)
Dividends paid on common stock(51,329) 
 
Net cash used in financing activities(171,380) (35,134) (12,965)
Net (decrease) increase in cash and cash equivalents(39,836) 59,167
 45,145
Cash and cash equivalents at beginning of year115,721
 56,554
 11,409
Cash and cash equivalents at end of year$75,885
 $115,721
 $56,554

 Year Ended December 31,
 2017 2016 2015
 (in thousands)
Cash flows from operating activities:     
Net income$325,492
 $259,798
 $194,244
Adjustments to reconcile net income to net cash (used in) provided by operating activities:     
Equity in net undistributed earnings of subsidiaries(245,734) (253,028) (60,357)
Excess tax benefit of stock-based compensation(7) (359) (1,945)
Other operating activities, net16,928
 (9,521) 2,869
Net cash (used in) provided by operating activities96,679
 (3,110) 134,811
Cash flows from investing activities:     
Purchases of securities(11,765) (20,148) 
Principal pay downs, calls, maturities, and sales proceeds of securities, net23,196
 34,390
 2,358
Proceeds from sale of other repossessed assets, net
 
 4,138
Capital contributions to subsidiaries(50,000) (226,869) 
Loans purchases, fundings, and principal collections, net
 2,770
 3,704
Sale (purchase) of money market investments, net
 121
 330
Net cash and cash equivalents (used) in acquisition (1)
 
 (19,440)
Net cash (used in) provided by investing activities(38,569) (209,736) (8,910)
Cash flows from financing activities:     
Proceeds from issuance of subordinated debt
 169,256
 
Cash paid for tax withholding on vested restricted stock(13,811) (9,483) (7,603)
Excess tax benefit of stock-based compensation
 
 1,945
Repayments on other borrowings
 
 (83,444)
Proceeds from issuance of common stock
 55,785
 28,288
Proceeds from exercise of stock options846
 1,070
 1,935
Redemption of preferred stock
 
 (70,500)
Cash dividends paid on preferred stock
 
 (750)
Net cash (used in) provided by financing activities(12,965) 216,628
 (130,129)
Net increase (decrease) in cash and cash equivalents45,145
 3,782
 (4,228)
Cash and cash equivalents at beginning of year11,409
 7,627
 11,855
Cash and cash equivalents at end of year$56,554
 $11,409
 $7,627
Supplemental disclosure:     
Cash paid during the year for:     
Interest$11,182
 $5,165
 $4,235
Income taxes97,781
 70,131
 54,590
Non-cash investing and financing activity:     
Change in unrealized gain (loss) on AFS securities, net of tax759
 (1,984) 1,199
Change in unrealized (loss) gain on junior subordinated debt, net of tax(3,604) (2,077) (4,276)
Loan and OREO contributions to subsidiaries11,264
 50,773
 183
(1)
Cash acquired, less cash consideration paid of $36.5 million, resulted in a net $19.4 million use of cash and cash equivalents in the acquisition.



22.21. SEGMENTS
The Company's reportable segments are aggregated based primarily on geographic location, services offered, and markets served. The Company's regional segments, which include Arizona, Nevada, Southern California, and Northern California, provide full service banking and related services to their respective markets. The operations from the regional segments correspond to the following banking divisions: ABA in Arizona, BON and FIB in Nevada, TPB in Southern California, and Bridge in Northern California.
The Company's NBL segments provide specialized banking services to niche markets. The Company's NBL reportable segments include HOA Services, Public & Nonprofit Finance, Technology & Innovation, HFF, and Other NBLs. These NBLs are managed centrally and are broader in geographic scope than the Company's other segments, though still predominately located within the Company's core market areas. The HOA Services NBL corresponds to the AAB division. The operations of Public and Nonprofit Finance are combined into one reportable segment. The Technology & Innovation NBL includes the operations of Equity Fund Resources, Life Sciences Group, Renewable Resource Group, and Technology Finance. The HFF NBL includes the hotel franchise loan portfolio acquired from GE Capital US Holdings, Inc. on April 20, 2016. The Other NBLs segment consists of Corporate Finance, Mortgage Warehouse Lending, and Resort Finance.
The Corporate & Other segment consists of corporate-related items, income and expense items not allocated to the Company's other reportable segments, and inter-segment eliminations.
The Company's segment reporting process begins with the assignment of all loan and deposit accounts directly to the segments where these products are originated and/or serviced. Equity capital is assigned to each segment based on the risk profile of their assets and liabilities. With the exception of goodwill, which is assigned a 100% weighting, equity capital allocations ranged from 0% to 12% during the year, with a funds credit provided for the use of this equity as a funding source. Any excess or deficient equity not allocated to segments based on risk is assigned to the Corporate & Other segment.
Net interest income, provision for credit losses, and non-interest expense amounts are recorded in their respective segment to the extent that the amounts are directly attributable to those segments. Net interest income is recorded in each segment on a TEB with a corresponding increase in income tax expense, which is eliminated in the Corporate & Other segment.
Further, net interest income of a reportable segment includes a funds transfer pricing process that matches assets and liabilities with similar interest rate sensitivity and maturity characteristics. Using this funds transfer pricing methodology, liquidity is transferred between users and providers. A net user of funds has lending/investing in excess of deposits/borrowings and a net provider of funds has deposits/borrowings in excess of lending/investing. A segment that is a user of funds is charged for the use of funds, while a provider of funds is credited through funds transfer pricing, which is determined based on the average life of the assets or liabilities in the portfolio.
Net income amounts for each reportable segment is further derived by the use of expense allocations. Certain expenses not directly attributable to a specific segment are allocated across all segments based on key metrics, such as number of employees, average loan balances, and average deposit balances. These types of expenses include information technology, operations, human resources, finance, risk management, credit administration, legal, and marketing.
Income taxes are applied to each segment based on the effective tax rate for the geographic location of the segment. Any difference in the corporate tax rate and the aggregate effective tax rates in the segments are adjusted in the Corporate & Other segment.

The following is a summary of operating segment balance sheet information for the periods indicated:
   Regional Segments   Regional Segments

 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
At December 31, 2017 (in millions)
At December 31, 2019: (in millions)
Assets:                    
Cash, cash equivalents, and investment securities $4,237.1
 $2.1
 $8.2
 $2.1
 $1.7
 $4,471.2
 $1.8
 $9.0
 $2.3
 $2.2
Loans, net of deferred loan fees and costs 15,093.9
 3,323.7
 1,844.8
 1,934.7
 1,275.5
 21,123.3
 3,847.9
 2,252.5
 2,253.9
 1,311.2
Less: allowance for credit losses (140.0) (31.5) (18.1) (19.5) (13.2) (167.8) (31.6) (18.0) (18.3) (9.7)
Total loans 14,953.9
 3,292.2
 1,826.7
 1,915.2
 1,262.3
 20,955.5
 3,816.3
 2,234.5
 2,235.6
 1,301.5
Other assets acquired through foreclosure, net 28.5
 2.3
 13.3
 
 0.2
 13.9
 
 13.0
 0.9
 
Goodwill and other intangible assets, net 300.7
 
 23.2
 
 156.5
 297.6
 
 23.2
 
 154.6
Other assets 808.9
 46.3
 58.8
 14.4
 15.1
 1,083.7
 48.6
 59.4
 15.0
 19.8
Total assets $20,329.1
 $3,342.9
 $1,930.2
 $1,931.7
 $1,435.8
 $26,821.9
 $3,866.7
 $2,339.1
 $2,253.8
 $1,478.1
Liabilities:                    
Deposits $16,972.5
 $4,841.3
 $3,951.4
 $2,461.1
 $1,681.7
 $22,796.5
 $5,384.7
 $4,350.1
 $2,585.3
 $2,373.6
Borrowings and qualifying debt 766.9
 
 
 
 
 393.6
 
 
 
 
Other liabilities 360.0
 11.6
 20.9
 3.2
 11.9
 615.1
 17.8
 11.9
 1.2
 15.9
Total liabilities 18,099.4
 4,852.9
 3,972.3
 2,464.3
 1,693.6
 23,805.2
 5,402.5
 4,362.0
 2,586.5
 2,389.5
Allocated equity: 2,229.7
 396.5
 263.7
 221.8
 303.1
 3,016.7
 453.6
 301.0
 253.3
 312.5
Total liabilities and stockholders' equity $20,329.1
 $5,249.4
 $4,236.0
 $2,686.1
 $1,996.7
 $26,821.9
 $5,856.1
 $4,663.0
 $2,839.8
 $2,702.0
Excess funds provided (used) 
 1,906.5
 2,305.8
 754.4
 560.9
 
 1,989.4
 2,323.9
 586.0
 1,223.9
  National Business Lines  
  HOA Services Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance  Other NBL Corporate & Other
Assets: (in millions)
Cash, cash equivalents, and investment securities $
 $
 $
 $
 $
 $4,223.0
Loans, net of deferred loan fees and costs 162.1
 1,580.4
 1,097.9
 1,327.7
 2,543.0
 4.1
Less: allowance for credit losses (1.6) (15.6) (11.4) (4.0) (25.0) (0.1)
Total loans 160.5
 1,564.8
 1,086.5
 1,323.7
 2,518.0
 4.0
Other assets acquired through foreclosure, net 
 
 
 
 
 12.7
Goodwill and other intangible assets, net 
 
 120.9
 0.1
 
 
Other assets 0.9
 17.9
 6.0
 5.9
 15.5
 628.1
Total assets $161.4
 $1,582.7
 $1,213.4
 $1,329.7
 $2,533.5
 $4,867.8
Liabilities:            
Deposits $2,230.4
 $
 $1,737.6
 $
 $
 $69.0
Borrowings and qualifying debt 
 
 
 
 
 766.9
Other liabilities 1.2
 42.4
 0.8
 0.4
 5.5
 262.1
Total liabilities 2,231.6
 42.4
 1,738.4
 0.4
 5.5
 1,098.0
Allocated equity: 59.4
 126.5
 244.1
 108.3
 206.0
 300.3
Total liabilities and stockholders' equity $2,291.0
 $168.9
 $1,982.5
 $108.7
 $211.5
 $1,398.3
Excess funds provided (used) 2,129.6
 (1,413.8) 769.1
 (1,221.0) (2,322.0) (3,469.5)



  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Assets: (in millions)
Cash, cash equivalents, and investment securities $
 $
 $
 $
 $10.1
 $4,445.8
Loans, net of deferred loan fees and costs 237.2
 1,635.6
 1,552.0
 1,930.8
 6,098.7
 3.5
Less: allowance for credit losses (2.0) (13.7) (12.6) (12.6) (49.3) 
Total loans 235.2
 1,621.9
 1,539.4
 1,918.2
 6,049.4
 3.5
Other assets acquired through foreclosure, net 
 
 
 
 
 
Goodwill and other intangible assets, net 
 
 119.7
 0.1
 
 
Other assets 1.2
 18.3
 7.3
 8.8
 64.3
 841.0
Total assets $236.4
 $1,640.2
 $1,666.4
 $1,927.1
 $6,123.8
 $5,290.3
Liabilities:            
Deposits $3,210.1
 $0.1
 $3,771.5
 $
 $36.9
 $1,084.2
Borrowings and qualifying debt 
 
 
 
 
 393.6
Other liabilities 1.8
 52.9
 0.1
 
 2.8
 510.7
Total liabilities 3,211.9
 53.0
 3,771.6
 
 39.7
 1,988.5
Allocated equity: 84.5
 131.6
 317.5
 158.5
 494.3
 509.9
Total liabilities and stockholders' equity $3,296.4
 $184.6
 $4,089.1
 $158.5
 $534.0
 $2,498.4
Excess funds provided (used) 3,060.0
 (1,455.6) 2,422.7
 (1,768.6) (5,589.8) (2,791.9)

   Regional Segments   Regional Segments

 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
At December 31, 2016 (in millions)
At December 31, 2018: (in millions)
Assets:                    
Cash, cash equivalents, and investment securities $3,052.3
 $1.9
 $10.1
 $2.1
 $1.9
 $4,259.7
 $2.5
 $10.9
 $2.5
 $3.0
Loans, net of deferred loan fees and costs 13,208.5
 2,955.9
 1,725.5
 1,766.8
 1,095.4
 17,710.6
 3,647.9
 2,003.5
 2,161.1
 1,300.2
Less: allowance for credit losses (124.7) (30.1) (18.5) (19.4) (8.8) (152.7) (30.7) (18.7) (19.8) (10.7)
Total loans 13,083.8
 2,925.8
 1,707.0
 1,747.4
 1,086.6
 17,557.9
 3,617.2
 1,984.8
 2,141.3
 1,289.5
Other assets acquired through foreclosure, net 47.8
 6.2
 18.0
 
 0.3
 17.9
 0.8
 13.9
 
 
Goodwill and other intangible assets, net 302.9
 
 23.7
 
 157.5
 299.2
 
 23.2
 
 155.5
Other assets 714.0
 42.9
 58.8
 14.5
 14.3
 974.8
 46.9
 57.8
 14.2
 23.9
Total assets $17,200.8
 $2,976.8
 $1,817.6
 $1,764.0
 $1,260.6
 $23,109.5
 $3,667.4
 $2,090.6
 $2,158.0
 $1,471.9
Liabilities:                    
Deposits $14,549.8
 $3,843.4
 $3,731.5
 $2,382.6
 $1,543.6
 $19,177.4
 $5,090.2
 $3,996.4
 $2,347.5
 $1,839.1
Borrowings and qualifying debt 447.9
 
 
 
 
 851.5
 
 
 
 
Other liabilities 311.6
 12.8
 28.3
 12.9
 12.4
 466.9
 10.4
 14.5
 4.5
 12.2
Total liabilities 15,309.3
 3,856.2
 3,759.8
 2,395.5
 1,556.0
 20,495.8
 5,100.6
 4,010.9
 2,352.0
 1,851.3
Allocated equity: 1,891.5
 346.6
 250.7
 201.6
 283.7
 2,613.7
 441.0
 277.4
 242.9
 304.1
Total liabilities and stockholders' equity $17,200.8
 $4,202.8
 $4,010.5
 $2,597.1
 $1,839.7
 $23,109.5
 $5,541.6
 $4,288.3
 $2,594.9
 $2,155.4
Excess funds provided (used) 
 1,226.0
 2,192.9
 833.1
 579.1
 
 1,874.2
 2,197.7
 436.9
 683.5
 National Business Lines   National Business Lines  
 HOA Services Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance  Other NBLs Corporate & Other HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Assets: (in millions) (in millions)
Cash, cash equivalents, and investment securities $
 $
 $
 $
 $
 $3,036.3
 $
 $
 $
 $
 $
 $4,240.8
Loans, net of deferred loan fees and costs 116.8
 1,454.3
 1,011.4
 1,292.1
 1,776.9
 13.4
 210.0
 1,547.5
 1,200.9
 1,479.9
 4,154.9
 4.7
Less: allowance for credit losses (1.3) (15.6) (10.6) (0.8) (19.0) (0.6) (1.9) (14.2) (10.0) (8.5) (38.2) 
Total loans 115.5
 1,438.7
 1,000.8
 1,291.3
 1,757.9
 12.8
 208.1
 1,533.3
 1,190.9
 1,471.4
 4,116.7
 4.7
Other assets acquired through foreclosure, net 
 
 
 
 
 23.3
 
 
 
 
 
 3.2
Goodwill and other intangible assets, net 
 
 121.5
 0.2
 
 
 
 
 120.4
 0.1
 
 
Other assets 0.3
 15.6
 7.2
 5.3
 11.1
 544.0
 0.9
 20.1
 6.3
 7.2
 37.1
 760.4
Total assets $115.8
 $1,454.3
 $1,129.5
 $1,296.8
 $1,769.0
 $3,616.4
 $209.0
 $1,553.4
 $1,317.6
 $1,478.7
 $4,153.8
 $5,009.1
Liabilities:                        
Deposits $1,890.3
 $
 $1,038.2
 $
 $
 $120.2
 $2,607.2
 $
 $2,559.0
 $
 $
 $738.0
Borrowings and qualifying debt 
 
 
 
 
 447.9
 
 
 
 
 
 851.5
Other liabilities 0.7
 50.5
 2.0
 1.4
 17.5
 173.1
 2.1
 25.2
 0.1
 0.4
 49.6
 347.9
Total liabilities 1,891.0
 50.5
 1,040.2
 1.4
 17.5
 741.2
 2,609.3
 25.2
 2,559.1
 0.4
 49.6
 1,937.4
Allocated equity: 65.6
 117.1
 224.1
 107.1
 145.5
 149.5
 70.7
 123.9
 268.7
 122.3
 340.0
 422.7
Total liabilities and stockholders' equity $1,956.6
 $167.6
 $1,264.3
 $108.5
 $163.0
 $890.7
 $2,680.0
 $149.1
 $2,827.8
 $122.7
 $389.6
 $2,360.1
Excess funds provided (used) 1,840.8
 (1,286.7) 134.8
 (1,188.3) (1,606.0) (2,725.7) 2,471.0
 (1,404.3) 1,510.2
 (1,356.0) (3,764.2) (2,649.0)

The following is a summary of operating segment income statement information for the periods indicated:
   Regional Segments   Regional Segments

 Consolidated Company Arizona Nevada Southern California Northern California Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2017 (in thousands)
Net interest income (expense) $784,664
 $198,622
 $145,001
 $109,177
 $85,360
Year Ended December 31, 2019: (in thousands)
Net interest income $1,040,412
 $249,083
 $161,801
 $131,053
 $95,697
Provision for (recovery of) credit losses 17,250
 1,153
 (4,724) 100
 4,575
 18,500
 3,181
 545
 1,243
 (500)
Net interest income (expense) after provision for credit losses 767,414
 197,469
 149,725
 109,077
 80,785
Net interest income after provision for credit losses 1,021,912
 245,902
 161,256
 129,810
 96,197
Non-interest income 45,344
 4,757
 9,135
 3,396
 10,000
 65,095
 7,169
 12,021
 4,149
 8,591
Non-interest expense (360,941) (76,118) (61,066) (51,808) (48,387) (482,781) (96,578) (62,276) (60,310) (51,709)
Income (loss) before income taxes 451,817
 126,108
 97,794
 60,665
 42,398
 604,226
 156,493
 111,001
 73,649
 53,079
Income tax expense (benefit) 126,325
 49,317
 34,133
 25,529
 17,591
 105,055
 39,124
 23,310
 20,621
 14,862
Net income (loss) $325,492
 $76,791
 $63,661
 $35,136
 $24,807
Net income $499,171
 $117,369
 $87,691
 $53,028
 $38,217

  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
  (in thousands)
Net interest income $86,594
 $13,342
 $130,299
 $52,905
 $125,467
 $(5,829)
Provision for (recovery of) credit losses 60
 57
 2,844
 3,790
 7,280
 
Net interest income after provision for credit losses 86,534
 13,285
 127,455
 49,115
 118,187
 (5,829)
Non-interest income 367
 
 14,267
 
 5,269
 13,262
Non-interest expense (37,078) (7,617) (47,974) (9,180) (44,561) (65,498)
Income (loss) before income taxes 49,823
 5,668
 93,748
 39,935
 78,895
 (58,065)
Income tax expense (benefit) 11,459
 1,304
 21,562
 9,185
 18,146
 (54,518)
Net income $38,364
 $4,364
 $72,186
 $30,750
 $60,749
 $(3,547)


 National Business Lines     Regional Segments
 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other Consolidated Company Arizona Nevada Southern California Northern California
 (in thousands)
Net interest income (expense) $54,102
 $28,485
 $82,473
 $56,961
 $65,908
 $(41,425)
Year Ended December 31, 2018: (in thousands)
Net interest income $915,879
 $224,754
 $148,085
 $115,561
 $92,583
Provision for (recovery of) credit losses 341
 593
 2,821
 4,493
 9,729
 (1,831) 23,000
 2,235
 (2,447) 2,292
 1,809
Net interest income (expense) after provision for credit losses 53,761
 27,892
 79,652
 52,468
 56,179
 (39,594) 892,879
 222,519
 150,532
 113,269
 90,774
Non-interest income 558
 
 8,422
 52
 1,772
 7,252
 43,116
 7,689
 11,326
 3,800
 9,932
Non-interest expense (28,289) (8,522) (36,726) (10,166) (20,550) (19,309) (425,667) (91,161) (62,536) (57,735) (52,574)
Income (loss) before income taxes 26,030
 19,370
 51,348
 42,354
 37,401
 (51,651) 510,328
 139,047
 99,322
 59,334
 48,132
Income tax expense (benefit) 9,676
 6,317
 19,255
 15,883
 14,000
 (65,376) 74,540
 34,824
 20,951
 16,709
 13,565
Net income (loss) $16,354
 $13,053
 $32,093
 $26,471
 $23,401
 $13,725
Net income $435,788
 $104,223
 $78,371
 $42,625
 $34,567
    Regional Segments

 Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2016 (in thousands)
Net interest income (expense) $657,213
 $170,513
 $137,507
 $103,542
 $88,162
Provision for (recovery of) credit losses 8,000
 9,912
 (3,337) (580) 2,587
Net interest income (expense) after provision for credit losses 649,213
 160,601
 140,844
 104,122
 85,575
Non-interest income 42,915
 6,887
 8,622
 2,550
 10,422
Non-interest expense (330,949) (63,406) (60,570) (45,643) (53,073)
Income (loss) before income taxes 361,179
 104,082
 88,896
 61,029
 42,924
Income tax expense (benefit) 101,381
 40,832
 31,113
 25,663
 18,049
Net income (loss) $259,798
 $63,250
 $57,783
 $35,366
 $24,875
 National Business Lines   National Business Lines  
 HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
 (in thousands) (in thousands)
Net interest income (expense) $41,539
 $20,900
 $69,143
 $38,583
 $49,893
 $(62,569)
Net interest income $67,154
 $15,149
 $105,029
 $55,332
 $80,073
 $12,159
Provision for (recovery of) credit losses 256
 (183) (1,626) 
 4,200
 (3,229) 281
 (1,101) 5,657
 3,275
 11,046
 (47)
Net interest income (expense) after provision for credit losses 41,283
 21,083
 70,769
 38,583
 45,693
 (59,340) 66,873
 16,250
 99,372
 52,057
 69,027
 12,206
Non-interest income 460
 59
 6,728
 
 2,315
 4,872
 614
 158
 14,121
 13
 2,076
 (6,613)
Non-interest expense (24,019) (7,936) (31,271) (8,544) (15,204) (21,283) (32,390) (8,120) (41,159) (9,603) (26,822) (43,567)
Income (loss) before income taxes 17,724
 13,206
 46,226
 30,039
 32,804
 (75,751) 35,097
 8,288
 72,334
 42,467
 44,281
 (37,974)
Income tax expense (benefit) 6,647
 4,952
 17,335
 11,265
 12,302
 (66,777) 8,072
 1,905
 16,637
 9,768
 10,184
 (58,075)
Net income (loss) $11,077
 $8,254
 $28,891
 $18,774
 $20,502
 $(8,974)
Net income $27,025
 $6,383
 $55,697
 $32,699
 $34,097
 $20,101
    Regional Segments
  Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2017: (in thousands)
Net interest income (expense) $784,664
 $198,622
 $145,001
 $109,177
 $85,360
Provision for (recovery of) credit losses 17,250
 1,153
 (4,724) 100
 4,575
Net interest income (expense) after provision for credit losses 767,414
 197,469
 149,725
 109,077
 80,785
Non-interest income 45,344
 4,757
 9,135
 3,396
 10,000
Non-interest expense (360,941) (76,118) (61,066) (51,808) (48,387)
Income (loss) before income taxes 451,817
 126,108
 97,794
 60,665
 42,398
Income tax expense (benefit) 126,325
 49,317
 34,133
 25,529
 17,591
Net income $325,492
 $76,791
 $63,661
 $35,136
 $24,807
  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
  (in thousands)
Net interest income (expense) $54,102
 $28,485
 $82,473
 $56,961
 $65,908
 $(41,425)
Provision for (recovery of) credit losses 341
 593
 2,821
 4,493
 9,729
 (1,831)
Net interest income (expense) after provision for credit losses 53,761
 27,892
 79,652
 52,468
 56,179
 (39,594)
Non-interest income 558
 
 8,422
 52
 1,772
 7,252
Non-interest expense (28,289) (8,522) (36,726) (10,166) (20,550) (19,309)
Income (loss) before income taxes 26,030
 19,370
 51,348
 42,354
 37,401
 (51,651)
Income tax expense (benefit) 9,676
 6,317
 19,255
 15,883
 14,000
 (65,376)
Net income $16,354
 $13,053
 $32,093
 $26,471
 $23,401
 $13,725


    Regional Segments
  Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2015 (in thousands)
Net interest income (expense) $492,576
 $129,914
 $122,082
 $94,585
 $56,698
Provision for (recovery of) credit losses 3,200
 3,099
 (6,887) 152
 3,038
Net interest income (expense) after provision for credit losses 489,376
 126,815
 128,969
 94,433
 53,660
Non-interest income 29,768
 4,204
 9,202
 2,697
 5,161
Non-interest expense (260,606) (59,917) (59,553) (47,549) (30,161)
Income (loss) before income taxes 258,538
 71,102
 78,618
 49,581
 28,660
Income tax expense (benefit) 64,294
 27,893
 27,516
 20,849
 12,051
Net income $194,244
 $43,209
 $51,102
 $28,732
 $16,609
22. REVENUE FROM CONTRACTS WITH CUSTOMERS
  National Business Lines  
  HOA
Services
 Public & Nonprofit Finance Technology & Innovation (1) Other NBLs Corporate & Other
  (in thousands)
Net interest income (expense) $25,572
 $19,988
 $30,137
 $48,525
 $(34,925)
Provision for (recovery of) credit losses 232
 2,655
 2,264
 (1,234) (119)
Net interest income (expense) after provision for credit losses 25,340
 17,333
 27,873
 49,759
 (34,806)
Non-interest income 322
 687
 2,252
 849
 4,394
Non-interest expense (18,059) (5,675) (7,596) (14,501) (17,595)
Income (loss) before income taxes 7,603
 12,345
 22,529
 36,107
 (48,007)
Income tax expense (benefit) 2,851
 4,630
 8,448
 13,540
 (53,484)
Net income $4,752
 $7,715
 $14,081
 $22,567
 $5,477
ASC 606, Revenue from Contracts with Customers, requires revenue to be recognized at an amount that reflects the consideration to which the entity expects to be entitled in exchange for transferring goods or services to a customer. ASC 606 applies to all contracts with customers to provide goods or services in the ordinary course of business, except for contracts that are specifically excluded from its scope. The majority of the Company’s revenue streams including interest income, credit and debit card fees, income from equity investments, including warrants and SBIC equity income, income from bank owned life insurance, foreign currency income, lending related income, and gains and losses on sales of investment securities are outside the scope of ASC 606. Revenue streams including service charges and fees, interchange fees on credit and debit cards, and success fees are within the scope of ASC 606.
Disaggregation of Revenue
The following table represents a disaggregation of revenue from contracts with customers for the periods indicated along with the reportable segment for each revenue category:
    Regional Segments
  Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2019 (in thousands)
Revenue from contracts with customers:          
Service charges and fees $23,353
 $4,781

$8,131

$3,012
 $3,885
Debit and credit card interchange (1) 5,839
 1,151

1,212

583
 2,859
Success fees (2) 1,580
 




 
Other income 288
 15

14

5
 65
Total revenue from contracts with customers $31,060
 $5,947
 $9,357
 $3,600
 $6,809
Revenues outside the scope of ASC 606 (3) 34,035
 1,222
 2,664
 549
 1,782
Total non-interest income $65,095
 $7,169
 $12,021
 $4,149
 $8,591
  National Business Lines  
  HOA Services Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Year Ended December 31, 2019 (in thousands)
Revenue from contracts with customers:            
Service charges and fees $329
 $
 $3,211
 $
 $4
 $
Debit and credit card interchange (1) 34
 
 
 
 
 
Success fees (2) 
 
 1,580
 
 
 
Other income 3
 
 4
 
 171
 11
Total revenue from contracts with customers $366
 $
 $4,795
 $
 $175
 $11
Revenues outside the scope of ASC 606 (3) 1
 
 9,472
 
 5,094
 13,251
Total non-interest income $367
 $
 $14,267
 $
 $5,269
 $13,262

(1)As the Bridge acquisition was completed on June 30, 2015, the resultsIncluded as part of operations of Bridge are includedCard income in the Company's Consolidated Income Statements beginning July 1, 2015.Statement.
(2)Included as part of Income from equity investments in the Consolidated Income Statement.
(3)
Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."



    Regional Segments
  Consolidated Company Arizona Nevada Southern California Northern California
Year Ended December 31, 2018 (in thousands)
Revenue from contracts with customers:          
Service charges and fees $22,295
 $3,902
 $8,151
 $2,666
 $3,795
Debit and credit card interchange (1) 6,801
 1,132
 1,379
 650
 3,616
Success fees (2) 3,335
 
 
 
 96
Other income 626
 181
 194
 59
 161
Total revenue from contracts with customers $33,057
 $5,215
 $9,724
 $3,375
 $7,668
Revenues outside the scope of ASC 606 (3) 10,059
 2,474
 1,602
 425
 2,264
Total non-interest income $43,116
 $7,689
 $11,326
 $3,800
 $9,932
  National Business Lines  
  HOA Services Public & Nonprofit Finance Technology & Innovation Hotel Franchise Finance Other NBLs Corporate & Other
Year Ended December 31, 2018 (in thousands)
Revenue from contracts with customers:            
Service charges and fees $585
 $
 $3,201
 $
 $
 $(5)
Debit and credit card interchange (1) 24
 
 
 
 
 
Success fees (2) 
 
 3,239
 
 
 
Other income 4
 
 
 
 1
 26
Total revenue from contracts with customers $613
 $
 $6,440
 $
 $1
 $21
Revenues outside the scope of ASC 606 (3) 1
 158
 7,681
 13
 2,075
 (6,634)
Total non-interest income $614
 $158
 $14,121
 $13
 $2,076
 $(6,613)
(1)Included as part of Card income in the Consolidated Income Statement.
(2)Included as part of Income from equity investments in the Consolidated Income Statement.
(3)Amounts are accounted for under separate guidance. Refer to discussion of revenue sources not subject to ASC 606 under the Non-interest income section in "Note 1. Summary of Significant Accounting Policies."
Performance Obligations
Many of the services the Company performs for its customers are ongoing, and either party may cancel at any time. The fees for these contracts are dependent upon various underlying factors, such as customer deposit balances, and as such may be considered variable. The Company’s performance obligations for these services are satisfied as the services are rendered and payment is collected on a monthly, quarterly, or semi-annual basis. Other contracts with customers are for services to be provided at a point in time, and fees are recognized at the time such services are rendered. The Company had no material unsatisfied performance obligations as of December 31, 2019. The revenue streams within the scope of ASC 606 are described in further detail below.
Service Charges and Fees
The Company performs deposit account services for its customers, which include analysis and treasury management services, use of safe deposit boxes, check upcharges, and other ancillary services. The depository arrangements the Company holds with its customers are considered day-to-day contracts with ongoing renewals and optional purchases, and as such, the contract duration does not extend beyond the services performed. Due to the short-term nature of such contracts, the Company generally recognizes revenue for deposit related fees as services are rendered. From time to time, the Company may waive certain fees for its customers. The Company considers historical experience when recognizing revenue from contracts with customers, and may reduce the transaction price to account for fee waivers or refunds.
Debit and Credit Card Interchange
When a credit or debit card issued by the Company is used to purchase goods or services from a merchant, the Company earns an interchange fee. The Company considers the merchant its customer in these transactions as the Company provides the merchant with the service of enabling the cardholder to purchase the merchant’s goods or services with increased convenience, and it enables the merchants to transact with a class of customer that may not have access to sufficient funds at the time of purchase. The Company acts as an agent to the payment network by providing nightly settlement services between the network and the merchant. This transmission of data and funds represents the Company’s performance obligation and is performed nightly. As the payment network

is in direct control of setting the rates and the Company is acting as an agent, the interchange fee is recorded net of expenses as the services are provided.
Success Fees
Success fees are one-time fees detailed as part of certain loan agreements and are earned immediately upon occurrence of a triggering event. Examples of triggering events include a borrower obtaining its next round of funding, an acquisition, or completion of a public offering. Success fees are variable consideration as the transaction price can vary and is contingent on the occurrence or non-occurrence of a future event. As the consideration is highly susceptible to factors outside of the Company’s influence and uncertainty about the amount of consideration is not expected to be resolved for an extended period of time, the variable consideration is constrained and is not recognized until the achievement of the triggering event.
Principal versus Agent Considerations
When more than one party is involved in providing goods or services to a customer, ASC 606 requires the Company to determine whether it is the principal or an agent in these transactions by evaluating the nature of its promise to the customer. An entity is a principal and therefore records revenue on a gross basis, if it controls a promised good or service before transferring that good or service to the customer. An entity is an agent and records as revenue the net amount it retains for its agency services if its role is to arrange for another entity to provide the goods or services. The Company most commonly acts as a principal and records revenue on a gross basis, except in certain circumstances. As an example, revenues earned from interchange fees, in which the Company acts as an agent, are recorded as non-interest income, net of the related expenses paid to the principal.
Contract Balances
The timing of revenue recognition may differ from the timing of cash settlements or invoicing to customers. The Company records contract liabilities, or deferred revenue, when payments from customers are received or due in advance of providing services to customers. The Company generally receives payments for its services during the period or at the time services are provided, and therefore does not have material contract liability balances at period-end. The Company records contract assets or receivables when revenue is recognized prior to receipt of cash from the customer. Accounts receivable totals $1.6 million and $1.4 million as of December 31, 2019 and December 31, 2018, respectively, and are presented in Other Assets on the Consolidated Balance Sheets.

23. QUARTERLY FINANCIAL DATA (UNAUDITED)
 Year Ended December 31, 2017 Year Ended December 31, 2019
 Fourth Quarter Third Quarter Second Quarter First Quarter Fourth Quarter Third Quarter Second Quarter First Quarter
 (in thousands, except per share amounts) (in thousands, except per share amounts)
Interest income $228,459
 $217,836
 $206,953
 $192,265
 $315,420
 $315,608
 $302,848
 $291,168
Interest expense 17,430
 16,253
 14,210
 12,956
 43,447
 49,186
 48,167
 43,832
Net interest income 211,029
 201,583
 192,743
 179,309
 271,973
 266,422
 254,681
 247,336
Provision for credit losses 5,000
 5,000
 3,000
 4,250
 4,000
 4,000
 7,000
 3,500
Net interest income after provision for credit losses 206,029
 196,583
 189,743
 175,059
 267,973
 262,422
 247,681
 243,836
Non-interest income 13,688
 10,456
 10,601
 10,599
 16,027
 19,441
 14,218
 15,410
Non-interest expense (95,398) (89,296) (88,420) (87,827) (129,699) (125,955) (114,213) (112,914)
Income before provision for income taxes 124,319
 117,743
 111,924
 97,831
 154,301
 155,908
 147,686
 146,332
Income tax expense 34,973
 34,899
 31,964
 24,489
 26,236
 28,533
 24,750
 25,536
Net income available to common stockholders $89,346
 $82,844
 $79,960
 $73,342
Net income $128,065
 $127,375
 $122,936
 $120,796
Earnings per share:                
Basic $0.86
 $0.79
 $0.77
 $0.71
 $1.26
 $1.25
 $1.19
 $1.16
Diluted $0.85
 $0.79
 $0.76
 $0.70
 $1.25
 $1.24
 $1.19
 $1.16
  Year Ended December 31, 2018
  Fourth Quarter Third Quarter Second Quarter First Quarter
  (in thousands, except per share amounts)
Interest income $281,968
 $265,216
 $251,602
 $234,697
Interest expense 38,455
 31,178
 27,494
 20,477
Net interest income 243,513
 234,038
 224,108
 214,220
Provision for credit losses 6,000
 6,000
 5,000
 6,000
Net interest income after provision for credit losses 237,513
 228,038
 219,108
 208,220
Non-interest income 13,611
 4,418
 13,444
 11,643
Non-interest expense (111,129) (113,841) (102,548) (98,149)
Income before provision for income taxes 139,995
 118,615
 130,004
 121,714
Income tax expense 20,909
 7,492
 25,325
 20,814
Net income $119,086
 $111,123
 $104,679
 $100,900
Earnings per share:        
Basic $1.14
 $1.06
 $1.00
 $0.97
Diluted $1.13
 $1.05
 $0.99
 $0.96
  Year Ended December 31, 2016
  Fourth Quarter Third Quarter Second Quarter First Quarter
  (in thousands, except per share amounts)
Interest income $187,411
 $184,750
 $174,089
 $154,256
Interest expense 12,142
 12,203
 10,403
 8,545
Net interest income 175,269
 172,547
 163,686
 145,711
Provision for credit losses 1,000
 2,000
 2,500
 2,500
Net interest income after provision for credit losses 174,269
 170,547
 161,186
 143,211
Non-interest income 10,540
 10,683
 8,559
 13,133
Non-interest expense (88,645) (85,007) (81,804) (75,493)
Income before provision for income taxes 96,164
 96,223
 87,941
 80,851
Income tax expense 26,364
 29,171
 26,327
 19,519
Net income available to common stockholders $69,800
 $67,052
 $61,614
 $61,332
Earnings per share:        
Basic $0.67
 $0.65
 $0.60
 $0.60
Diluted $0.67
 $0.64
 $0.60
 $0.60




Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
None.
Item 9A.Controls and Procedures.
As of the end of the period covered by this Annual Report on Form 10-K, an evaluation was carried out by the Company’s management, with the participation of its CEO and CFO, of the effectiveness of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e), under the Exchange Act.Act). Based upon that evaluation, the Company’s Chief Executive OfficerCEO and Chief Financial OfficerCFO concluded that the disclosure controls and procedures were effective as of the end of the period covered by this report. No changes were made to the Company’s internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) during the last fiscal quarter that materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.
MANAGEMENTSMANAGEMENT'S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING
The management of WAL is responsible for establishing and maintaining adequate internal control over financial reporting. The Company’s internal control over financial reporting is a process designed under the supervision of the Company’s CEO and CFO to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company’s financial statements for external purposes in accordance with U.S. generally accepted accounting principles.
As of December 31, 2017,2019, management assessed the effectiveness of the Company’s internal control over financial reporting based on the criteria for effective internal control over financial reporting established in “Internal Control-Integrated Framework” issued by the COSO in 2013. Based on this assessment, management determined that the Company maintained effective internal control over financial reporting as of December 31, 2017,2019, based on those criteria.
RSM US LLP, the independent registered public accounting firm that audited the Consolidated Financial Statements of the Company included in this Annual Report on Form 10-K, has audited the effectiveness of the Company’s internal control over financial reporting as of December 31, 2017.2019. Their report, which expresses an unqualified opinion on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2017,2019, is included herein.


Report of Independent Registered Public Accounting Firm
To the Stockholders and the Board of Directors of Western Alliance Bancorporation
Opinion on the Internal Control Over Financial Reporting
We have audited Western Alliance Bancorporation and Subsidiaries’ (the Company) internal control over financial reporting as of December 31, 2017,2019, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013. In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2017,2019, based on criteria established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission in 2013.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets as of December 31, 20172019 and 2016,2018, and the related consolidated statements of income, comprehensive income, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 20172019 of the Company and our report, dated February 26, 2018,March 2, 2020, expressed an unqualified opinion.
 
Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
 
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
 
Definition and Limitations of Internal Control Over Financial Reporting
A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements.
 
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ RSM US LLP

Phoenix, Arizona
February 26, 2018March 2, 2020

Item 9B.Other Information
Not applicable.On February 25, 2020, the BOD of WAL approved the Western Alliance Bancorporation Severance and Change in Control Plan, as amended and restated effective February 25, 2020 (the “Plan”). The Plan amends and restates and replaces in its entirety the prior Western Alliance Bancorporation Change in Control Severance Plan, originally effective September 19, 2012.
Under the Plan, certain executives, including WAL’s named executive officers, who are designated by the BOD and who enter into individual participation agreements (“Executives”) are eligible to participate in the Plan and to receive severance and certain other payments under the circumstances set forth in the Plan.
The Plan generally provides that severance benefits will be paid upon (i) the termination of an Executive’s employment for unsatisfactory work performance (“Poor Performance”) that does not provide grounds for termination with Cause (as defined in the Plan), (ii) the termination of an Executive’s employment without Cause (other than a termination for Poor Performance), (iii) a retirement at or after age sixty with at least ten years of continuous service (a “Qualified Retirement”), and (iv) the termination of an Executive’s employment without Cause (other than a termination for Poor Performance) or by the Executive for Good Reason (as defined in the Plan), in either case within the twenty-four month period following a Change in Control (as defined in the Plan) (a “Change in Control Termination”).
Under the Plan, in the event of a qualifying termination of employment in any of the circumstances described above, and contingent upon the Executive’s execution of a binding release agreement and waiver of claims, the Executive will be entitled to receive accrued benefits, payable in accordance with WAL’s normal payroll practice, and the severance and other payments set forth in the Plan. Following a termination for Poor Performance, the Executive will receive a lump sum cash payment in an amount equal to nine months of the Executive’s annual base salary for the year in which the termination occurs. Following a termination without Cause (other than a termination for Poor Performance), the Executive will receive (i) a lump sum cash payment in an amount equal to one-and-a-half times the Executive’s annual base salary for the year in which the termination occurs, plus (ii) a lump sum cash payment in an amount equal to WAL’s portion of premiums paid for continuation coverage for up to twenty-four months following termination of employment pursuant to the Consolidated Omnibus Budget Reconciliation Act of 1985 (the “COBRA Premium Payment”). Following a Qualified Retirement, the Executive will be entitled to receive a lump sum cash payment of a pro rata amount of the Executive’s annual bonus for the year in which the Qualified Retirement occurs, based on WAL’s actual projected performance at the time of the Qualified Retirement.
Following a Change in Control Termination, the Executive will receive (i) a lump sum cash payment in an amount equal to the sum of (a) two times the Executive’s annual base salary (using the greater of the base salary for the year in which the Change in Control occurs or the year in which the termination occurs), and (b) two times the Executive’s target annual bonus (using the greater of the annual bonus for the year in which the Change in Control occurs or the year in which the termination occurs), plus (ii) a lump sum cash payment in an amount equal to the COBRA Premium Payment. In addition, upon a Change in Control, each Executive will receive any unpaid annual bonus that was earned by the Executive in the year prior to the year in which the Change in Control occurs, regardless of whether the Executive’s employment is terminated.
In order to be eligible to receive benefits under the Plan, each Executive must comply with the confidentiality, non-solicitation and non-disparagement covenants set forth in the Plan. In addition, an Executive whose employment terminates due to a Qualified Retirement or a Change in Control Termination must also comply with the non-competition covenants set forth in the Plan. If any amount or benefits to be paid or provided to an Executive under the Plan or any other arrangement would trigger the excise tax imposed on “excess parachute payments,” the Executive’s payments and benefits will be reduced to the one dollar less than the amount that would cause the payments and benefits to be subject to the excise tax, unless the Executive would be better off (on an after-tax basis) receiving all payments and benefits and paying all applicable excise and income taxes.
The foregoing description is a summary of the material terms of the Plan and related participation agreements. This summary does not purport to be complete and is qualified in its entirety by reference to the full and complete terms of the Plan and form of participation agreement, copies of which are filed as Exhibit 10.8 and Exhibit 10.13, respectively, to this Annual Report on Form 10-K and are incorporated herein by reference.


PART III
Item 10.Directors, Executive Officers and Corporate Governance
The information required by this item is incorporated by reference from the Company’s Definitive Proxy Statement for the 20182020 Annual Meeting of Stockholders to be held on June 12, 2018.
The Company has adopted a Code of Business Conduct and Ethics applicable to all of its directors and employees, including the principal executive officer, principal financial officer and principal accounting officer. A copy of the Code of Business Conduct and Ethics is available on the Company’s website at www.westernalliancebancorporation.com.11, 2020.
Item 11.Executive Compensation
The information required by this item is incorporated by reference from the Company’s Definitive Proxy Statement for the 20182020 Annual Meeting of Stockholders to be held on June 12, 2018.11, 2020.
Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
The information required by this item is incorporated by reference from the Company’s Definitive Proxy Statement for the 20182020 Annual Meeting of Stockholders to be held on June 12, 2018.11, 2020.
Item 13.Certain Relationships and Related Transactions, and Director Independence
The information required by this item is incorporated by reference from the Company’s Definitive Proxy Statement for the 20182020 Annual Meeting of Stockholders to be held on June 12, 2018.11, 2020.
Item 14.Principal Accountant Fees and Services
The information required by this item is incorporated by reference from the Company’s Definitive Proxy Statement for the 20182020 Annual Meeting of Stockholders to be held on June 12, 2018.11, 2020.
PART IV
Item 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(1)The following financial statements are incorporated by reference from Item 8 hereto:
 
   
 
   
 
   
 
   
 
(2)Financial Statement Schedules
Not applicable.
On the Exhibit Index, a “±” identifies each management contract or compensatory plan or arrangement required to be filed as an exhibit to this Annual Report.

EXHIBITS
3.1 
3.2
3.3
   
3.23.4 
3.3
3.4
   
3.5 
   
3.64.1* 
   
4.14.2 
   
4.24.3 
   
4.34.4 
   
4.44.5 
   
4.54.6 
   
4.64.7 
   
4.74.8 
   
4.84.9 
   
10.1 
   
10.2 
   
10.3 
   
10.4 
   
10.5 
   
10.6 
   
10.7 
   
10.810.8* 
   
10.9 
   

10.10 
   

* Filed herewith.
** Furnished herewith.
± Management contract or compensatory arrangement.

Stockholders may obtain copies of exhibits by writing to: Dale Gibbons, Western Alliance Bancorporation, One East Washington Street Suite 1400, Phoenix, AZ 85004.

Item 16.EXHIBITS AND FINANCIAL STATEMENT SCHEDULESFORM 10-K SUMMARY
None.Not applicable.

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
  WESTERN ALLIANCE BANCORPORATION
     
February 26, 2018March 2, 2020 By: /s/ Robert SarverKenneth A. Vecchione
    Robert Sarver
Chairman of the Board andKenneth A. Vecchione
    Chief Executive Officer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert SarverKenneth A. Vecchione and Dale Gibbons, and each of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto and other documents in connection therewith the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully and to all intents and purposes as he or she might or could do in person hereby ratifying and confirming all that said attorneys-in-fact and agents, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the registrant in their listed capacities on February 26, 2018.March 2, 2020.

Name Title
   
/s/ Robert SarverChairman of the Board and Chief Executive Officer
Robert Sarver(Principal Executive Officer)
/s/ Kenneth A. Vecchione President and DirectorChief Executive Officer
Kenneth A. Vecchione  
   
/s/ Robert SarverExecutive Chairman
Robert Sarver
/s/ Dale Gibbons Executive Vice PresidentChairman and Chief Financial Officer
Dale Gibbons Officer (Principal(Principal Financial Officer)
   
/s/ J. Kelly Ardrey Jr. Senior Vice President and Chief Accounting Officer
J. Kelly Ardrey Jr. (Principal Accounting Officer)
   
/s/ Bruce D. Beach Director
Bruce D. Beach
/s/ William S. BoydDirector
William S. Boyd  
   
/s/ Howard Gould Director
Howard Gould  
   
/s/ Steven J. Hilton Director
Steven J. Hilton  
   
/s/ Marianne Boyd Johnson Director
Marianne Boyd Johnson  
   
/s/ Robert Latta Director
Robert Latta  
   
/s/ Cary MackTodd Marshall Director
Cary MackTodd Marshall  
   
/s/ Todd MarshallAdriane C. McFetridge Director
Todd Marshall
Adriane C. McFetridge

  
   
/s/ James Nave Director
James Nave  
   
/s/ Michael Patriarca Director
Michael Patriarca  
   
/s/ Donald D. Snyder Director
Donald D. Snyder  
   
/s/ Sung Won Sohn Director
Sung Won Sohn  





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