Glacier Bancorp (GBCI) 10-Q 2 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 16, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	GLACIER BANCORP INC
Trading Symbol	GBCI
Entity Central Index Key	0000868671
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		84,588,574

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash on hand and in banks	$ 139,333	$ 161,782
Federal funds sold	115	0
Interest bearing cash deposits	63,079	42,008
Cash and cash equivalents	202,527	203,790
Debt securities, available-for-sale	2,522,322	2,571,663
Debt securities, held-to-maturity	255,572	297,915
Total debt securities	2,777,894	2,869,578
Loans held for sale, at fair value	29,389	33,156
Loans receivable	8,326,070	8,287,549
Allowance for loan and lease losses	(129,786)	(131,239)
Loans receivable, net	8,196,284	8,156,310
Premises and equipment, net	277,619	241,528
Other real estate owned	8,125	7,480
Accrued interest receivable	57,367	54,408
Deferred tax asset	12,554	23,564
Core deposit intangible, net	47,548	49,242
Goodwill	289,586	289,586
Non-marketable equity securities	16,435	27,871
Bank-owned life insurance	82,819	82,320
Other assets	75,632	76,651
Total assets	12,073,779	12,115,484
Liabilities
Non-interest bearing deposits	3,051,119	3,001,178
Interest bearing deposits	6,536,996	6,492,589
Securities sold under agreements to repurchase	489,620	396,151
Federal Home Loan Bank advances	154,683	440,175
Other borrowed funds	14,738	14,708
Subordinated debentures	134,048	134,051
Accrued interest payable	4,709	4,252
Other liabilities	137,016	116,526
Total liabilities	10,522,929	10,599,630
Stockholders' Equity
Preferred shares, $0.01 par value per share, 1,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value per share, 117,187,500 shares authorized	846	845
Paid-in capital	1,051,299	1,051,253
Retained earnings - substantially restricted	474,818	473,183
Accumulated other comprehensive income (loss)	23,887	(9,427)
Total stockholders' equity	1,550,850	1,515,854
Total liabilities and stockholders' equity	$ 12,073,779	$ 12,115,484
Number of common stock shares issued and outstanding	84,588,199	84,521,692

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Statements of Financial Condition (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	1,000,000	1,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	117,187,500	117,187,500

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest Income
Investment securities	$ 21,351	$ 20,142
Residential real estate loans	10,779	8,785
Commercial loans	83,539	65,515
Consumer and other loans	10,447	8,624
Total interest income	126,116	103,066
Interest Expense
Deposits	5,341	3,916
Securities sold under agreements to repurchase	802	485
Federal Home Loan Bank advances	3,055	2,089
Other borrowed funds	38	16
Subordinated debentures	1,668	1,268
Total interest expense	10,904	7,774
Net Interest Income	115,212	95,292
Provision for loan losses	57	795
Net interest income after provision for loan losses	115,155	94,497
Non-Interest Income
Service charges and other fees	18,015	16,871
Miscellaneous loan fees and charges	967	1,477
Gain on sale of loans	5,798	6,097
Gain (loss) on sale of debt securities	213	(333)
Other income	3,481	1,974
Total non-interest income	28,474	26,086
Non-Interest Expense
Compensation and employee benefits	52,728	45,721
Occupancy and equipment	8,437	7,274
Advertising and promotions	2,388	2,170
Data processing	3,892	3,967
Other real estate owned	139	72
Regulatory assessments and insurance	1,285	1,206
Core deposit intangibles amortization	1,694	1,056
Other expenses	12,267	12,161
Total non-interest expense	82,830	73,627
Income Before Income Taxes	60,799	46,956
Federal and state income tax expense	11,667	8,397
Net Income	$ 49,132	$ 38,559
Basic earnings per share	$ 0.58	$ 0.48
Diluted earnings per share	0.58	0.48
Dividends declared per share	$ 0.26	$ 0.23
Average outstanding shares - basic	84,549,974	80,808,904
Average outstanding shares - diluted	84,614,248	80,887,135

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 49,132	$ 38,559
Other Comprehensive Income (Loss), Net of Tax
Unrealized gains (losses) on available-for-sale securities	46,452	(25,711)
Reclassification adjustment for (gains) losses included in net income	(221)	282
Net unrealized gains (losses) on available-for-sale securities	46,231	(25,429)
Tax effect	(11,715)	6,444
Net of tax amount	34,516	(18,985)
Unrealized (losses) gains on derivatives used for cash flow hedges	(1,834)	4,379
Reclassification adjustment for losses included in net income	223	900
Net unrealized (losses) gains on derivatives used for cash flow hedges	(1,611)	5,279
Tax effect	409	(1,338)
Net of tax amount	(1,202)	3,941
Total other comprehensive income (loss), net of tax	33,314	(15,044)
Total Comprehensive Income	$ 82,446	$ 23,515

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings Substantially Restricted	Accumulated Other Comprehensive (Loss) Income
Balance, beginning, shares at Dec. 31, 2017		78,006,956
Balance, beginning at Dec. 31, 2017	$ 1,199,057	$ 780	$ 797,997	$ 402,259	$ (1,979)
Net income	38,559			38,559
Other comprehensive income (loss)	(15,044)				(15,044)
Cash dividends declared	(19,476)			(19,476)
Stock issued in connection with acquisitions, shares		6,432,868
Stock issued in connection with acquisitions, value	250,807	$ 64	250,743
Stock issuances under stock incentive plans, shares		71,648
Stock issuances under stock incentive plans, value	0	$ 1	(1)
Stock-based compensation and related taxes	121		121
Balance, ending, shares at Mar. 31, 2018		84,511,472
Balance, ending at Mar. 31, 2018	$ 1,454,024	$ 845	1,048,860	421,342	(17,023)
Balance, beginning, shares at Dec. 31, 2018	84,521,692	84,521,692
Balance, beginning at Dec. 31, 2018	$ 1,515,854	$ 845	1,051,253	473,183	(9,427)
Net income	49,132			49,132
Other comprehensive income (loss)	33,314				33,314
Cash dividends declared	(22,039)			(22,039)
Stock issuances under stock incentive plans, shares		66,507
Stock issuances under stock incentive plans, value	0	$ 1	(1)
Stock-based compensation and related taxes	$ 47		47
Balance, ending, shares at Mar. 31, 2019	84,588,199	84,588,199
Balance, ending at Mar. 31, 2019	$ 1,550,850	$ 846	$ 1,051,299	474,818	$ 23,887
Cumulative-effect of accounting changes	$ (25,458)			$ (25,458)

Unaudited Condensed Consolida_6

Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash dividends declared per share	$ 0.26	$ 0.23
Retained Earnings Substantially Restricted
Cash dividends declared per share	$ 0.26	$ 0.23

Unaudited Condensed Consolida_7

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net income	$ 49,132	$ 38,559
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	57	795
Net amortization of debt securities	5,379	3,465
Net (accretion) amortization of purchase accounting adjustments	(1,788)	1,337
Amortization of debt modification costs	412	412
Origination of loans held for sale	(145,163)	(175,506)
Proceeds from loans held for sale	154,756	184,188
Gain on sale of loans	(5,798)	(6,097)
(Gain) loss on sale of debt securities	(213)	333
Bank-owned life insurance income, net	(497)	(424)
Stock-based compensation, net of tax benefits	1,197	1,189
Depreciation and amortization of premises and equipment	4,574	3,722
Gain on sale and write-downs of other real estate owned, net	(416)	(53)
Amortization of core deposit intangibles	1,694	1,056
Amortization of investments in variable interest entities	1,644	1,117
Net increase in accrued interest receivable	(2,959)	(2,709)
Net (increase) decrease in other assets	(1,636)	289
Net increase (decrease) in accrued interest payable	457	(155)
Net decrease in other liabilities	(14,525)	(3,582)
Net cash provided by operating activities	46,307	47,936
Investing Activities
Sales of available-for-sale debt securities	269,616	219,855
Maturities, prepayments and calls of available-for-sale debt securities	120,368	72,952
Purchases of available-for-sale debt securities	(311,281)	(383,992)
Maturities, prepayments and calls of held-to-maturity debt securities	29,945	13,297
Principal collected on loans	617,236	552,922
Loan originations	(656,930)	(678,251)
Net additions to premises and equipment	(3,809)	(5,558)
Proceeds from sale of other real estate owned	1,208	755
Proceeds from redemption of non-marketable equity securities	39,436	28,986
Purchases of non-marketable equity securities	(28,000)	(18,395)
Investments in variable interest entities	(576)	(16,129)
Net cash received from acquisitions	0	101,268
Net cash provided by (used in) investing activities	77,213	(112,290)
Financing Activities
Net increase in deposits	94,322	524,162
Net increase in securities sold under agreements to repurchase	93,470	4,041
Net decrease in short-term Federal Home Loan Bank advances	(285,000)	(200,000)
Repayments of long-term Federal Home Loan Bank advances	(896)	(104)
Net increase (decrease) in other borrowed funds	27	(11,562)
Cash dividends paid	(25,562)	(107)
Tax withholding payments for stock-based compensation	(1,144)	(1,032)
Net cash (used in) provided by financing activities	(124,783)	315,398
Net (decrease) increase in cash, cash equivalents and restricted cash	(1,263)	251,044
Cash, cash equivalents and restricted cash at beginning of period	203,790	200,004
Cash, cash equivalents and restricted cash at end of period	202,527	451,048
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	10,447	7,930
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Transfer of loans to other real estate owned	1,437	378
Right-of-use assets obtained in exchange for operating lease liabilities	647	0
Dividends declared but not paid	22,039	19,476
Fair value of common stock shares issued	0	250,807
Cash consideration for outstanding shares	0	16,265
Effective settlement of a pre-existing relationship	0	10,054
Fair Value of Assets Acquired	0	1,549,158
Liabilities Assumed	$ 0	$ 1,383,756

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies General Glacier Bancorp, Inc. (“Company”) is a Montana corporation headquartered in Kalispell, Montana. The Company provides a full range of banking services to individuals and businesses in Montana, Idaho, Utah, Washington, Wyoming, Colorado and Arizona through its wholly-owned bank subsidiary, Glacier Bank (“Bank”). The Company offers a wide range of banking products and services, including: 1) retail banking; 2) business banking; 3) real estate, commercial, agriculture and consumer loans; and 4) mortgage origination services. The Company serves individuals, small to medium-sized businesses, community organizations and public entities. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the Company’s financial condition as of March 31, 2019 , the results of operations and comprehensive income for the three month periods ended March 31, 2019 and 2018 , and changes in stockholders’ equity and cash flows for the three month periods ended March 31, 2019 and 2018 . The condensed consolidated statement of financial condition of the Company as of December 31, 2018 has been derived from the audited consolidated statements of the Company as of that date. The accompanying unaudited condensed consolidated financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 . Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results anticipated for the year ending December 31, 2019 . The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity. Material estimates that are particularly susceptible to significant change include: 1) the determination of the allowance for loan and lease losses (“ALLL” or “allowance”); 2) the valuation of debt securities; 3) the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans; and 4) the evaluation of goodwill impairment. For the determination of the ALLL and real estate valuation estimates, management obtains independent appraisals (new or updated) for significant items. Estimates relating to investment valuations are obtained from independent third parties. Estimates relating to the evaluation of goodwill for impairment are determined based on internal calculations using significant independent party inputs. Principles of Consolidation The consolidated financial statements of the Company include the parent holding company and the Bank. The Bank consists of fourteen bank divisions, a treasury division, an information technology division and a centralized mortgage division. The treasury division includes the Bank’s investment portfolio and wholesale borrowings, the information technology division includes the Bank’s internal data processing, and the centralized mortgage division includes mortgage loan servicing and secondary market sales. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities as Tier 1 capital instruments. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition. On April 30, 2019, the Company acquired the outstanding common stock of FNB Bancorp and its wholly-owned subsidiary, The First National Bank of Layton, a community bank based in Layton, Utah (collectively, “FNB”). As of March 31, 2019, FNB had total assets of $328,893,000 , gross loans of $248,725,000 and total deposits of $279,674,000 . For additional information relating to this subsequent event, see Note 13. Loans Receivable Loans that are intended to be held-to-maturity are reported at the unpaid principal balance less net charge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. When a loan is paid off prior to maturity, the remaining fees and costs on originated loans and premiums or discounts on acquired loans are immediately recognized into interest income. The Company’s loan segments, which are based on the purpose of the loan, include residential real estate, commercial, and consumer loans. The Company’s loan classes, a further disaggregation of segments, include residential real estate loans (residential real estate segment), commercial real estate and other commercial loans (commercial segment), and home equity and other consumer loans (consumer segment). Loans that are thirty days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for ninety days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off impaired loans. For other loans on nonaccrual, interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company considers impaired loans to be the primary credit quality indicator for monitoring the credit quality of the loan portfolio. Loans are designated impaired when, based upon current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement and, therefore, the Company has serious doubts as to the ability of such borrowers to fulfill the contractual obligation. Impaired loans include non-performing loans (i.e., non-accrual loans and accruing loans ninety days or more past due) and accruing loans under ninety days past due where it is probable payments will not be received according to the loan agreement (e.g., troubled debt restructuring). Interest income on accruing impaired loans is recognized using the interest method. The Company measures impairment on a loan-by-loan basis in the same manner for each class within the loan portfolio. An insignificant delay or shortfall in the amounts of payments would not cause a loan or lease to be considered impaired. The Company determines the significance of payment delays and shortfalls on a case-by-case basis, taking into consideration all of the facts and circumstances surrounding the loan and the borrower, including the length and reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest due. A restructured loan is considered a troubled debt restructuring (“TDR”) if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The Company periodically enters into restructure agreements with borrowers whereby the loans were previously identified as TDRs. When such circumstances occur, the Company carefully evaluates the facts of the subsequent restructure to determine the appropriate accounting and under certain circumstances it may be acceptable not to account for the subsequently restructured loan as a TDR. When assessing whether a concession has been granted by the Company, any prior forgiveness on a cumulative basis is considered a continuing concession. A TDR loan is considered an impaired loan and a specific valuation allowance is established when the fair value of the collateral-dependent loan or present value of the loan’s expected future cash flows (discounted at the loan’s effective interest rate based on the original contractual rate) is lower than the carrying value of the impaired loan. The Company has made the following types of loan modifications, some of which were considered a TDR: • reduction of the stated interest rate for the remaining term of the debt; • extension of the maturity date(s) at a stated rate of interest lower than the current market rate for newly originated debt having similar risk characteristics; and • reduction of the face amount of the debt as stated in the debt agreements. The Company recognizes that while borrowers may experience deterioration in their financial condition, many continue to be creditworthy customers who have the willingness and capacity for debt repayment. In determining whether non-restructured or unimpaired loans issued to a single or related party group of borrowers should continue to accrue interest when the borrower has other loans that are impaired or are TDRs, the Company on a quarterly or more frequent basis performs an updated and comprehensive assessment of the willingness and capacity of the borrowers to timely and ultimately repay their total debt obligations, including contingent obligations. Such analysis takes into account current financial information about the borrowers and financially responsible guarantors, if any, including for example: • analysis of global, i.e., aggregate debt service for total debt obligations; • assessment of the value and security protection of collateral pledged using current market conditions and alternative market assumptions across a variety of potential future situations; and • loan structures and related covenants. For additional information relating to loans, see Note 3. Allowance for Loan and Lease Losses Based upon management’s analysis of the Company’s loan portfolio, the balance of the ALLL is an estimate of probable credit losses known and inherent within the Bank’s loan portfolio as of the date of the consolidated financial statements. The ALLL is analyzed at the loan class level and is maintained within a range of estimated losses. Determining the adequacy of the ALLL involves a high degree of judgment and is inevitably imprecise as the risk of loss is difficult to quantify. The determination of the ALLL and the related provision for loan losses is a critical accounting estimate that involves management’s judgments about known relevant internal and external environmental factors that affect loan losses. The balance of the ALLL is highly dependent upon management’s evaluations of borrowers’ current and prospective performance, appraisals and other variables affecting the quality of the loan portfolio. Individually significant loans and major lending areas are reviewed periodically to determine potential problems at an early date. Changes in management’s estimates and assumptions are reasonably possible and may have a material impact upon the Company’s consolidated financial statements, results of operations or capital. Risk characteristics considered in the ALLL analysis applicable to each loan class within the Company's loan portfolio are as follows: Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan class include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse, geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this category are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse, geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan class are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years . Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse, geographic market area) and the creditworthiness of a borrower. The ALLL consists of a specific valuation allowance component and a general valuation allowance component. The specific component relates to loans that are determined to be impaired and individually evaluated for impairment. The Company measures impairment on a loan-by-loan basis based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except when it is determined that repayment of the loan is expected to be provided solely by the underlying collateral. For impairment based on expected future cash flows, the Company considers all information available as of a measurement date, including past events, current conditions, potential prepayments, and estimated cost to sell when such costs are expected to reduce the cash flows available to repay or otherwise satisfy the loan. For alternative ranges of cash flows, the likelihood of the possible outcomes is considered in determining the best estimate of expected future cash flows. The effective interest rate for a loan restructured in a TDR is based on the original contractual rate. For collateral-dependent loans and real estate loans for which foreclosure or a deed-in-lieu of foreclosure is probable, impairment is measured by the fair value of the collateral, less estimated cost to sell. The fair value of the collateral is determined primarily based upon appraisal or evaluation of the underlying real property value. The general valuation allowance component relates to probable credit losses inherent in the balance of the loan portfolio based on historical loss experience, adjusted for changes in trends and conditions of qualitative or environmental factors. The historical loss experience is based on the previous twelve quarters loss experience by loan class adjusted for risk characteristics in the existing loan portfolio. The same trends and conditions are evaluated for each class within the loan portfolio; however, the risk characteristics are weighted separately at the individual class level based on the Company’s judgment and experience. The changes in trends and conditions evaluated for each class within the loan portfolio include the following: • changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses; • changes in global, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • changes in the nature and volume of the portfolio and in the terms of loans; • changes in experience, ability, and depth of lending management and other relevant staff; • changes in the volume and severity of past due and nonaccrual loans; • changes in the quality of the Company’s loan review system; • changes in the value of underlying collateral for collateral-dependent loans; • the existence and effect of any concentrations of credit, and changes in the level of such concentrations; and • the effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the Company’s existing portfolio. The ALLL is increased by provisions for loan losses which are charged to expense. The portions of loan and overdraft balances determined by management to be uncollectible are charged-off as a reduction of the ALLL and recoveries of amounts previously charged-off are credited as an increase to the ALLL. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. At acquisition date, the assets and liabilities of acquired banks are recorded at their estimated fair values which results in no ALLL carried over from acquired banks. Subsequent to acquisition, an allowance will be recorded on the acquired loan portfolios for further credit deterioration, if any. Leases The Company leases certain land, premises and equipment from third parties. A lessee lease is classified as an operating lease unless it meets certain criteria (e.g., lease contains option to purchase that Company is reasonably certain to exercise), in which case it is classified as a finance lease. Effective January 1, 2019, operating leases are included in net premises and equipment and other liabilities on the Company’s statements of financial condition and lease expense for lease payments is recognized on a straight-line basis over the lease term. Finance leases are included in net premises and equipment and other borrowed funds on the Company’s statements of financial condition. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. An ROU asset represents the right to use the underlying asset for the lease term and also includes any direct costs and payments made prior to lease commencement and excludes lease incentives. When an implicit rate is not available, an incremental borrowing rate based on the information available at commencement date is used in determining the present value of the lease payments. A lease term may include an option to extend or terminate the lease when it is reasonably certain the option will be exercised. The Company accounts for lease and nonlease components (e.g., common-area maintenance) together as a single combined lease component for all asset classes. Short-term leases of 12 months or less are excluded from accounting guidance; as a result, the lease payments are recognized on a straight-line basis over the lease term and the leases are not reflected on the Company’s statements of financial condition. Renewal and termination options are considered when determining short-term leases. Leases are accounted for on an individual lease level. Lease improvements incurred at the inception of the lease are recorded as an asset and depreciated over the initial term of the lease and lease improvements incurred subsequently are depreciated over the remaining term of the lease. The Company also leases certain premises and equipment to third parties. A lessor lease is classified as an operating lease unless it meets certain criteria that would classify it as either a sales-type lease or a direct financing lease. For additional information relating to leases, see Note 4. Revenue Recognition The Company recognizes revenue when services or products are transferred to customers in an amount that reflects the consideration to which the Company expects to be entitled. The Company’s principal source of revenue is interest income from debt securities and loans. Revenue from contracts with customers within the scope of Accounting Standards Codification ™ (“ASC”) Topic 606 was $18,446,000 and $17,291,000 for the three months ended March 31, 2019 and 2018 , respectively, and largely consisted of revenue from service charges and other fees from deposits (e.g., overdraft fees, ATM fees, debit card fees). Due to the short-term nature of the Company’s contracts with customers, an insignificant amount of receivables related to such revenue was recorded at March 31, 2019 and December 31, 2018 and there were no impairment losses recognized. Policies specific to revenue from contracts with customers include the following: Service Charges. Revenue from service charges consists of service charges and fees on deposit accounts under depository agreements with customers to provide access to deposited funds and, when applicable, pay interest on deposits. Service charges on deposit accounts may be transactional or non-transactional in nature. Transactional service charges occur in the form of a service or penalty and are charged upon the occurrence of an event (e.g., overdraft fees, ATM fees, wire transfer fees). Transactional service charges are recognized as services are delivered to and consumed by the customer, or as penalty fees are charged. Non-transactional service charges are charges that are based on a broader service, such as account maintenance fees and dormancy fees, and are recognized on a monthly basis. Debit Card Fees. Revenue from debit card fees includes interchange fee income from debit cards processed through card association networks. Interchange fees represent a portion of a transaction amount that the Company and other involved parties retain to compensate themselves for giving the cardholder immediate access to funds. Interchange rates are generally set by the card association networks and are based on purchase volumes and other factors. The Company records interchange fees as services are provided. Accounting Guidance Adopted in 2019 The ASC is the Financial Accounting Standards Board’s (“FASB”) officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Rules and interpretive releases of the Securities and Exchange Commission (“SEC”) under the authority of the federal securities laws are also sources of authoritative GAAP for the Company as an SEC registrant. All other accounting literature is non-authoritative. The following paragraphs provide descriptions of recently adopted Accounting Standards Updates (“ASU”) that may have had a material effect on the Company’s financial position or results of operations. ASU 2017-08 - Receivables - Nonrefundable Fees and Other Costs. In March 2017, FASB amended ASC Subtopic 310-20 to shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments required the premium to be amortized to the earliest call date instead of the maturity date. The amendments did not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2018 and any adjustments were to be reflected as of the beginning of the year that includes the interim period. Entities were to apply the amendments on a modified retrospective basis; therefore, a cumulative-effect reduction to retained earnings of $24,102,000 was recognized as of the January 1, 2019 effective date. The Company’s debt securities that were effected by the amendments were primarily in the state and local governments category. The Company’s accounting policies and procedures were updated to reflect the amendments. ASU 2016-02 - Leases. In February 2016, FASB amended ASC Topic 842 to address several aspects of lease accounting with the significant change being the recognition of lease assets and lease liabilities for leases previously classified as operating leases. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2018. The Company has lease agreements for which the amendments required the recognition of a lease liability to make lease payments and an ROU asset which represents its right to use the underlying asset for the lease term. An entity is permitted to elect not to restate its comparative periods in the period of adoption when transitioning to ASC Topic 842 and the Company made this election. In addition, the Company made the following elections related to implementation: 1) to not use hindsight in determining lease terms and in assessing impairment of ROU assets; and 2) to use the practical expedient package, which required no reassessment of whether existing contracts are or contain leases as well as no reassessment of lease classification for existing leases. At the date of adoption, the Company recognized an ROU asset and related lease liability on the Company’s statement of financial condition of $36,178,000 and $38,220,000 , respectively. The Company developed new processes to comply with the accounting and disclosure requirements of such amendments and policies and procedures were updated accordingly. Accounting Guidance Pending Adoption at March 31, 2019 The following paragraphs provide descriptions of newly issued but not yet effective ASUs that could have a material effect on the Company’s financial position or results of operations. ASU 2017-04 - Intangibles - Goodwill and Other. In January 2017, FASB amended ASC Topic 350 to simplify the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, under these amendments, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company has goodwill from prior business combinations and performs an annual impairment test or more frequently if changes or circumstances occur that would more-likely-than-not reduce the fair value of the reporting unit below its carrying value. During the third quarter of 2018, the Company performed its impairment assessment and determined the fair value of the aggregated reporting units exceeded the carrying value, such that the Company’s goodwill was not considered impaired. Although the Company cannot anticipate future goodwill impairment assessments, based on the most recent assessment, it is unlikely that an impairment amount would need to be calculated and, therefore, the Company does not anticipate a material impact from these amendments to the Company’s financial position and results of operations. The current accounting policies and processes are not anticipated to change, except for the elimination of the Step 2 analysis. For additional information regarding goodwill impairment testing, see Note 5. ASU 2016-13 - Financial Instruments - Credit Losses. In June 2016, FASB amended ASC Topic 326 to replace the incurred loss model with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to calculate credit loss estimates. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. The Company is currently evaluating the impact of these amendments to the Company’s financial position and results of operations and currently does not know or cannot reasonably quantify the impact of the adoption of the amendments as a result of the complexity and extensive changes from the amendments. The ALLL is a material estimate of the Company and given the change from an incurred loss model to a methodology that considers the credit loss over the life of the loan, there is the potential for an increase in the ALLL at adoption date. The Company is anticipating a significant change in the processes and procedures to calculate the ALLL, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The Company will also develop new procedures for determining an allowance for credit losses relating to held-to-maturity debt securities. In addition, the current accounting policy and procedures for other-than-temporary impairment on available-for-sale debt securities will be replaced with an allowance approach. The Company has engaged a third-party vendor solution and is currently in the implementation phase and evaluating the appropriate models, loan pools and assumptions to be utilized. The project team anticipates running parallel models during 2019 to refine its processes and procedures. For additional information on the ALLL, see Note 3.

Debt Securities

Debt Securities	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Debt Securities	Debt Securities The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: March 31, 2019 Amortized Cost Gross Unrealized Fair Value (Dollars in thousands) Gains Losses Available-for-sale U.S. government and federal agency $ 21,685 22 (186 ) 21,521 U.S. government sponsored enterprises 105,189 1,269 (1 ) 106,457 State and local governments 700,070 25,426 (305 ) 725,191 Corporate bonds 217,494 1,293 (239 ) 218,548 Residential mortgage-backed securities 828,103 3,154 (6,209 ) 825,048 Commercial mortgage-backed securities 612,407 14,235 (1,085 ) 625,557 Total available-for-sale 2,484,948 45,399 (8,025 ) 2,522,322 Held-to-maturity State and local governments 255,572 5,842 (6 ) 261,408 Total held-to-maturity 255,572 5,842 (6 ) 261,408 Total debt securities $ 2,740,520 51,241 (8,031 ) 2,783,730 December 31, 2018 Amortized Cost Gross Unrealized Fair Value (Dollars in thousands) Gains Losses Available-for-sale U.S. government and federal agency $ 23,757 54 (162 ) 23,649 U.S. government sponsored enterprises 120,670 52 (514 ) 120,208 State and local governments 844,636 18,936 (11,322 ) 852,250 Corporate bonds 292,052 378 (1,613 ) 290,817 Residential mortgage-backed securities 808,537 628 (16,250 ) 792,915 Commercial mortgage-backed securities 490,868 3,312 (2,356 ) 491,824 Total available-for-sale 2,580,520 23,360 (32,217 ) 2,571,663 Held-to-maturity State and local governments 297,915 1,380 (11,039 ) 288,256 Total held-to-maturity 297,915 1,380 (11,039 ) 288,256 Total debt securities $ 2,878,435 24,740 (43,256 ) 2,859,919 The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at March 31, 2019 . Actual maturities may differ from expected or contractual maturities since issuers have the right to prepay obligations with or without prepayment penalties. March 31, 2019 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 88,040 88,011 — — Due after one year through five years 243,020 245,035 7,061 7,230 Due after five years through ten years 272,600 282,663 76,025 78,561 Due after ten years 440,778 456,008 172,486 175,617 1,044,438 1,071,717 255,572 261,408 Mortgage-backed securities 1 1,440,510 1,450,605 — — Total $ 2,484,948 2,522,322 255,572 261,408 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds. Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended (Dollars in thousands) March 31, March 31, Available-for-sale Proceeds from sales and calls of debt securities $ 304,048 228,681 Gross realized gains 1 2,937 6 Gross realized losses 1 (2,716 ) (288 ) Held-to-maturity Proceeds from calls of debt securities 29,945 15,465 Gross realized gains 1 2 54 Gross realized losses 1 (10 ) (105 ) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method. Debt securities with an unrealized loss position are summarized as follows: March 31, 2019 Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available-for-sale U.S. government and federal agency $ 6,553 (71 ) 9,565 (115 ) 16,118 (186 ) U.S. government sponsored enterprises — — 4,961 (1 ) 4,961 (1 ) State and local governments 3,736 (4 ) 34,411 (301 ) 38,147 (305 ) Corporate bonds 18,409 (37 ) 53,314 (202 ) 71,723 (239 ) Residential mortgage-backed securities 28,049 (86 ) 441,716 (6,123 ) 469,765 (6,209 ) Commercial mortgage-backed securities 20,363 (254 ) 49,988 (831 ) 70,351 (1,085 ) Total available-for-sale $ 77,110 (452 ) 593,955 (7,573 ) 671,065 (8,025 ) Held-to-maturity State and local governments $ — — 6,896 (6 ) 6,896 (6 ) Total held-to-maturity $ — — 6,896 (6 ) 6,896 (6 ) December 31, 2018 Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available-for-sale U.S. government and federal agency $ 4,287 (27 ) 10,519 (135 ) 14,806 (162 ) U.S. government sponsored enterprises 43,400 (103 ) 35,544 (411 ) 78,944 (514 ) State and local governments 72,080 (922 ) 232,244 (10,400 ) 304,324 (11,322 ) Corporate bonds 119,111 (937 ) 114,800 (676 ) 233,911 (1,613 ) Residential mortgage-backed securities 132,405 (833 ) 537,202 (15,417 ) 669,607 (16,250 ) Commercial mortgage-backed securities 73,118 (402 ) 86,504 (1,954 ) 159,622 (2,356 ) Total available-for-sale $ 444,401 (3,224 ) 1,016,813 (28,993 ) 1,461,214 (32,217 ) Held-to-maturity State and local governments $ 87,392 (2,778 ) 126,226 (8,261 ) 213,618 (11,039 ) Total held-to-maturity $ 87,392 (2,778 ) 126,226 (8,261 ) 213,618 (11,039 ) Based on an analysis of its debt securities with unrealized losses as of March 31, 2019 and December 31, 2018 , the Company determined that none of such securities had other-than-temporary impairment and the unrealized losses were primarily the result of interest rate changes and market spreads subsequent to acquisition. The fair value of the debt securities is expected to recover as payments are received and the securities approach maturity. At March 31, 2019 , management determined that it did not intend to sell debt securities with unrealized losses, and there was no expected requirement to sell any of its debt securities with unrealized losses before recovery of their amortized cost.

Loans Receivable, Net

Loans Receivable, Net	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Loans Receivable, Net	Loans Receivable, Net The Company’s loan portfolio is comprised of three segments: residential real estate, commercial, and consumer and other loans. The loan segments are further disaggregated into the following classes: residential real estate, commercial real estate, other commercial, home equity and other consumer loans. The following table presents loans receivable for each portfolio class of loans: At or for the Three Months ended At or for the Year ended (Dollars in thousands) March 31, December 31, Residential real estate loans $ 884,732 887,742 Commercial loans Real estate 4,686,082 4,657,561 Other commercial 1,909,452 1,911,171 Total 6,595,534 6,568,732 Consumer and other loans Home equity 562,381 544,688 Other consumer 283,423 286,387 Total 845,804 831,075 Loans receivable 8,326,070 8,287,549 Allowance for loan and lease losses (129,786 ) (131,239 ) Loans receivable, net $ 8,196,284 8,156,310 Net deferred origination (fees) costs included in loans receivable $ (5,022 ) (5,685 ) Net purchase accounting (discounts) premiums included in loans receivable $ (23,681 ) (25,172 ) Weighted-average interest rate on loans (tax-equivalent) 5.18 % 4.97 % Allowance for Loan and Lease Losses The ALLL is a valuation allowance for probable incurred credit losses. The following tables summarize the activity in the ALLL by loan class: Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 131,239 10,631 72,448 38,160 5,811 4,189 Provision for loan losses 57 278 (148 ) (915 ) 64 778 Charge-offs (3,341 ) (292 ) (283 ) (840 ) (8 ) (1,918 ) Recoveries 1,831 94 311 444 13 969 Balance at end of period $ 129,786 10,711 72,328 36,849 5,880 4,018 Three Months ended March 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 129,568 10,798 68,515 39,303 6,204 4,748 Provision for loan losses 795 (177 ) 245 (3 ) (202 ) 932 Charge-offs (5,007 ) (3 ) (1,033 ) (1,788 ) (12 ) (2,171 ) Recoveries 2,252 16 615 596 50 975 Balance at end of period $ 127,608 10,634 68,342 38,108 6,040 4,484 The following tables disclose the recorded investment in loans and the balance in the ALLL by loan class: March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans receivable Individually evaluated for impairment $ 104,411 10,646 65,104 22,954 3,057 2,650 Collectively evaluated for impairment 8,221,659 874,086 4,620,978 1,886,498 559,324 280,773 Total loans receivable $ 8,326,070 884,732 4,686,082 1,909,452 562,381 283,423 ALLL Individually evaluated for impairment $ 702 1 57 642 — 2 Collectively evaluated for impairment 129,084 10,710 72,271 36,207 5,880 4,016 Total ALLL $ 129,786 10,711 72,328 36,849 5,880 4,018 December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans receivable Individually evaluated for impairment $ 108,788 12,685 68,837 20,975 3,497 2,794 Collectively evaluated for impairment 8,178,761 875,057 4,588,724 1,890,196 541,191 283,593 Total loans receivable $ 8,287,549 887,742 4,657,561 1,911,171 544,688 286,387 ALLL Individually evaluated for impairment $ 3,223 83 568 2,313 39 220 Collectively evaluated for impairment 128,016 10,548 71,880 35,847 5,772 3,969 Total ALLL $ 131,239 10,631 72,448 38,160 5,811 4,189 Substantially all of the Company’s loans receivable are with customers in the Company’s geographic market areas. Although the Company has a diversified loan portfolio, a substantial portion of its customers’ ability to honor their obligations is dependent upon the economic performance in the Company’s market areas. Aging Analysis The following tables present an aging analysis of the recorded investment in loans by loan class: March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Accruing loans 30-59 days past due $ 28,938 5,211 14,345 5,620 2,273 1,489 Accruing loans 60-89 days past due 7,956 768 3,564 1,839 1,082 703 Accruing loans 90 days or more past due 2,451 998 234 998 115 106 Non-accrual loans 40,269 6,219 24,096 6,766 2,454 734 Total past due and non-accrual loans 79,614 13,196 42,239 15,223 5,924 3,032 Current loans receivable 8,246,456 871,536 4,643,843 1,894,229 556,457 280,391 Total loans receivable $ 8,326,070 884,732 4,686,082 1,909,452 562,381 283,423 December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Accruing loans 30-59 days past due $ 24,312 5,251 9,477 4,282 3,213 2,089 Accruing loans 60-89 days past due 9,255 860 3,231 3,838 735 591 Accruing loans 90 days or more past due 2,018 788 — 492 428 310 Non-accrual loans 47,252 8,021 27,264 8,619 2,575 773 Total past due and non-accrual loans 82,837 14,920 39,972 17,231 6,951 3,763 Current loans receivable 8,204,712 872,822 4,617,589 1,893,940 537,737 282,624 Total loans receivable $ 8,287,549 887,742 4,657,561 1,911,171 544,688 286,387 Impaired Loans Loans are designated impaired when, based upon current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement and therefore, the Company has serious doubts as to the ability of such borrowers to fulfill the contractual obligation. The following tables disclose information related to impaired loans by loan class: At or for the Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans with a specific valuation allowance Recorded balance $ 16,061 44 6,004 10,004 — 9 Unpaid principal balance 16,061 44 6,004 10,004 — 9 Specific valuation allowance 702 1 57 642 — 2 Average balance 17,629 1,001 7,674 8,636 60 258 Loans without a specific valuation allowance Recorded balance 88,350 10,602 59,100 12,950 3,057 2,641 Unpaid principal balance 105,100 12,009 69,991 16,516 3,699 2,885 Average balance 88,970 10,665 59,296 13,328 3,217 2,464 Total Recorded balance 104,411 10,646 65,104 22,954 3,057 2,650 Unpaid principal balance 121,161 12,053 75,995 26,520 3,699 2,894 Specific valuation allowance 702 1 57 642 — 2 Average balance 106,599 11,666 66,970 21,964 3,277 2,722 At or for the Year ended December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans with a specific valuation allowance Recorded balance $ 19,197 1,957 9,345 7,268 120 507 Unpaid principal balance 19,491 2,220 9,345 7,268 120 538 Specific valuation allowance 3,223 83 568 2,313 39 220 Average balance 19,519 2,686 8,498 7,081 82 1,172 Loans without a specific valuation allowance Recorded balance 89,591 10,728 59,492 13,707 3,377 2,287 Unpaid principal balance 107,486 11,989 71,300 17,689 3,986 2,522 Average balance 106,747 10,269 73,889 17,376 3,465 1,748 Total Recorded balance 108,788 12,685 68,837 20,975 3,497 2,794 Unpaid principal balance 126,977 14,209 80,645 24,957 4,106 3,060 Specific valuation allowance 3,223 83 568 2,313 39 220 Average balance 126,266 12,955 82,387 24,457 3,547 2,920 Interest income recognized on impaired loans for the three months ended March 31, 2019 and 2018 was not significant. Restructured Loans A restructured loan is considered a troubled debt restructuring if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The following tables present TDRs that occurred during the periods presented and the TDRs that occurred within the previous twelve months that subsequently defaulted during the periods presented: Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer TDRs that occurred during the period Number of loans 4 — 1 2 1 — Pre-modification recorded balance $ 1,705 — 1,035 567 103 — Post-modification recorded balance $ 1,705 — 1,035 567 103 — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Three Months ended March 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer TDRs that occurred during the period Number of loans 12 2 4 6 — — Pre-modification recorded balance $ 15,997 439 8,278 7,280 — — Post-modification recorded balance $ 15,997 439 8,278 7,280 — — TDRs that subsequently defaulted Number of loans 1 1 — — — — Recorded balance $ 334 334 — — — — The modifications for the TDRs that occurred during the three months ended March 31, 2019 and 2018 included one or a combination of the following: an extension of the maturity date, a reduction of the interest rate or a reduction in the principal amount. In addition to the TDRs that occurred during the period provided in the preceding tables, the Company had TDRs with pre-modification loan balances of $1,940,000 and $431,000 for the three months ended March 31, 2019 and 2018 , respectively, for which OREO was received in full or partial satisfaction of the loans. The majority of such TDRs were in commercial real estate for the three months ended March 31, 2019 and 2018 . At March 31, 2019 and December 31, 2018 , the Company had $1,134,000 and $350,000 , respectively, of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process. At March 31, 2019 and December 31, 2018 , the Company had $2,076,000 and $698,000 , respectively, of OREO secured by residential real estate properties.

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Leases The Company leases certain land, premises and equipment from third parties. Effective January 1, 2019, ROU assets for operating and finance leases are included in net premises and equipment and lease liabilities are included in other liabilities and other borrowed funds, respectively, on the Company’s statements of financial condition. The following table summarizes the Company’s leases: March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases ROU assets $ 951 Accumulated depreciation (832 ) Net ROU assets $ 119 36,247 Lease liabilities $ 163 38,389 Weighted-average remaining lease term 2 years 19 years Weighted-average discount rate 5.3 % 3.7 % Maturities of lease liabilities consist of the following: March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases Maturing within one year $ 92 3,286 Maturing one year through two years 77 3,238 Maturing two years through three years 1 3,032 Maturing three years through four years 1 2,832 Maturing four years through five years — 2,716 Thereafter — 39,839 Total lease payments 171 54,943 Present value of lease payments Short-term 86 1,920 Long-term 77 36,469 Total present value of lease payments 163 38,389 Difference between lease payments and present value of lease payments $ 8 16,554 The components of lease expense consist of the following: Three Months ended (Dollars in thousands) March 31, Finance lease cost Amortization of ROU assets $ 16 Interest on lease liabilities 2 Operating lease cost 913 Short-term lease cost 109 Variable lease cost 199 Sublease income (2 ) Total lease expense $ 1,237 Supplemental cash flow information related to leases is as follows: Three Months ended March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 2 479 Financing cash flows 21 N/A The Company also leases office space to third parties through operating leases. Rent income from these leases for the three months ended March 31, 2019 was not significant.

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following schedule discloses the changes in the carrying value of goodwill: Three Months ended (Dollars in thousands) March 31, March 31, Net carrying value at beginning of period $ 289,586 177,811 Acquisitions — 111,724 Net carrying value at end of period $ 289,586 289,535 The Company performed its annual goodwill impairment test during the third quarter of 2018 and determined the fair value of the aggregated reporting units exceeded the carrying value, such that the Company’s goodwill was not considered impaired. In recognition there were no events or circumstances that occurred during the first quarter of 2019 that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value, the Company did not perform interim testing at March 31, 2019 . Changes in the economic environment, operations of the aggregated reporting units, or other factors could result in the decline in the fair value of the aggregated reporting units which could result in a goodwill impairment in the future. Accumulated impairment charges were $40,159,000 as of March 31, 2019 and December 31, 2018 .

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities	Variable Interest Entities A VIE is a partnership, limited liability company, trust or other legal entity that meets one of the following criteria: 1) the entity’s equity investment at risk is not sufficient to permit the entity to finance its activities without additional subordinated financial support from other parties; 2) the holders of the equity investment at risk, as a group, lack the characteristics of a controlling financial interest; and 3) the voting rights of some holders of the equity investment at risk are disproportionate to their obligation to absorb losses or receive returns, and substantially all of the activities are conducted on behalf of the holder of equity investment at risk with disproportionately few voting rights. A VIE must be consolidated by the Company if it is deemed to be the primary beneficiary, which is the party involved with the VIE that has both: 1) the power to direct the activities of the VIE that most significantly affect the VIE’s economic performance; and 2) the obligation to absorb the losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company’s VIEs are regularly monitored to determine if any reconsideration events have occurred that could cause the primary beneficiary status to change. A previously unconsolidated VIE is consolidated when the Company becomes the primary beneficiary. A previously consolidated VIE is deconsolidated when the Company ceases to be the primary beneficiary or the entity is no longer a VIE. Consolidated Variable Interest Entities The Company has equity investments in Certified Development Entities (“CDE”) which have received allocations of New Markets Tax Credits (“NMTC”). The NMTC program provides federal tax incentives to investors to make investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTC is available to investors over a seven -year period and is subject to recapture if certain events occur during such period. The maximum exposure to loss in the CDEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each CDE (NMTC) investment and determined the Company does not individually meet the characteristics of a primary beneficiary; however, the related-party group does meet the criteria as a group and substantially all of the activities of the CDEs either involve or are conducted on behalf of the Company. As a result, the Company is the primary beneficiary of the CDEs and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The primary activities of the CDEs are recognized in commercial loans interest income and other borrowed funds interest expense on the Company’s statements of operations and the federal income tax credit allocations from the investments are recognized in the Company’s statements of operations as a component of income tax expense. Such related cash flows are recognized in loans originated, principal collected on loans and change in other borrowed funds. The Bank is also the sole member of certain tax credit funds that make direct investments in qualified affordable housing projects (e.g., Low-Income Housing Tax Credit [“LIHTC”] partnerships). As such, the Company is the primary beneficiary of these tax credit funds and their assets, liabilities, and results of operations are included in the Company’s consolidated financial statements. The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) March 31, December 31, Assets Loans receivable $ 80,466 80,123 Accrued interest receivable 99 96 Other assets 45,808 45,779 Total assets $ 126,373 125,998 Liabilities Other borrowed funds $ 14,575 14,527 Accrued interest payable 3 1 Other liabilities 123 125 Total liabilities $ 14,701 14,653 Unconsolidated Variable Interest Entities The Company has equity investments in LIHTC partnerships, both directly and through tax credit funds, with carrying values of $34,272,000 and $35,112,000 as of March 31, 2019 and December 31, 2018 , respectively. The LIHTCs are indirect federal subsidies to finance low-income housing and are used in connection with both newly constructed and renovated residential rental buildings. Once a project is placed in service, it is generally eligible for the tax credit for ten consecutive years. To continue generating the tax credit and to avoid tax credit recapture, a LIHTC building must satisfy specific low-income housing compliance rules for a full fifteen -year period. The maximum exposure to loss in the VIEs is the amount of equity invested and credit extended by the Company. However, the Company has credit protection in the form of indemnification agreements, guarantees, and collateral arrangements. The Company has evaluated the variable interests held by the Company in each LIHTC investment and determined that the Company does not have controlling financial interests in such investments, and is not the primary beneficiary. The Company reports the investments in the unconsolidated LIHTCs as other assets on the Company’s statements of financial condition. Total unfunded contingent commitments related to the Company’s LIHTC investments totaled $11,362,000 at March 31, 2019 , and the Company expects to fulfill the majority of these commitments during 2019. There were no impairment losses on the Company’s LIHTC investments during the three months ended March 31, 2019 and 2018 . The Company has elected to use the proportional amortization method, and more specifically the practical expedient method, for the amortization of all eligible LIHTC investments and amortization expense is recognized as a component of income tax expense. The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended (Dollars in thousands) March 31, March 31, Amortization expense $ 1,417 891 Tax credits and other tax benefits recognized 1,958 1,240 The Company also owns the following trust subsidiaries, each of which issued trust preferred securities as Tier 1 capital instruments: Glacier Capital Trust II, Glacier Capital Trust III, Glacier Capital Trust IV, Citizens (ID) Statutory Trust I, Bank of the San Juans Bancorporation Trust I, First Company Statutory Trust 2001, and First Company Statutory Trust 2003. The trust subsidiaries have no assets, operations, revenues or cash flows other than those related to the issuance, administration and repayment of the securities held by third parties. The trust subsidiaries are not included in the Company’s consolidated financial statements because the sole asset of each trust subsidiary is a receivable from the Company, even though the Company owns all of the voting equity shares of the trust subsidiaries, has fully guaranteed the obligations of the trust subsidiaries and may have the right to redeem the third party securities under certain circumstances. The Company reports the trust preferred securities issued to the trust subsidiaries as subordinated debentures on the Company’s statements of financial condition.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing [Abstract]
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase The Company’s securities sold under agreements to repurchase (“repurchase agreements”) totaled $489,620,000 and $396,151,000 at March 31, 2019 and December 31, 2018 , respectively, and are secured by debt securities with carrying values of $607,780,000 and $511,294,000 , respectively. Securities are pledged to customers at the time of the transaction in an amount at least equal to the outstanding balance and are held in custody accounts by third parties. The fair value of collateral is continually monitored and additional collateral is provided as deemed appropriate. The following tables summarize the carrying value of the Company’s repurchase agreements by remaining contractual maturity and category of collateral: March 31, 2019 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and Continuous Up to 30 Days Total U.S. government and federal agency $ 4,402 — 4,402 Residential mortgage-backed securities 397,077 — 397,077 Commercial mortgage-backed securities 88,141 — 88,141 Total $ 489,620 — 489,620 December 31, 2018 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and Continuous Up to 30 Days Total Residential mortgage-backed securities $ 328,174 — 328,174 Commercial mortgage-backed securities 66,339 1,638 67,977 Total $ 394,513 1,638 396,151

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Interest Rate Swap Derivatives As of March 31, 2019 , the Company’s interest rate swap derivative financial instruments were designated as cash flow hedges and are summarized as follows: (Dollars in thousands) Forecasted Notional Amount Variable Interest Rate 1 Fixed Interest Rate 1 Payment Term Interest rate swap $ 160,000 3 month LIBOR 3.378 % Oct. 21, 2014 - Oct. 21, 2021 Interest rate swap 100,000 3 month LIBOR 2.498 % Nov. 30, 2015 - Nov. 30, 2022 ______________________________ 1 The Company pays the fixed interest rate and the counterparty pays the Company the variable interest rate. The hedging strategy converts the LIBOR-based variable interest rate on borrowings to a fixed interest rate, thereby protecting the Company from interest rate variability. The interest rate swaps with the $160,000,000 and $100,000,000 notional amounts began their payment terms in October 2014 and November 2015, respectively. The Company designated wholesale deposits and Federal Home Loan Bank (“FHLB”) advances as the cash flow hedge and these hedged items were determined to be fully effective during current and prior periods. The aggregate fair value of the interest rate swaps was recorded in other liabilities with changes recorded in OCI. The Company expects the hedges to remain highly effective during the remaining terms of the interest rate swaps. Interest expense recorded on the interest rate swaps totaled $1,976,000 for the three months ended March 31, 2019 and 2018 , and is reported as a component of interest expense on deposits and FHLB advances. Unless the interest rate swaps are terminated during the next year, the Company expects $1,118,000 of the unrealized loss reported in OCI at March 31, 2019 to be reclassified to interest expense during the next twelve months. The following table presents the pre-tax gains or losses recorded in OCI and the Company’s statements of operations relating to the interest rate swap derivative financial instruments: Three Months ended (Dollars in thousands) March 31, March 31, Interest rate swaps Amount of (loss) gain recognized in OCI $ (1,834 ) 4,379 Amount of loss reclassified from OCI to interest expense (223 ) (900 ) The following table discloses the offsetting of financial assets and interest rate swap derivative assets. March 31, 2019 December 31, 2018 (Dollars in thousands) Gross Amount of Recognized Assets Gross Amount Offset in the Statements of Financial Position Net Amounts of Assets Presented in the Statements of Financial Position Gross Amount of Recognized Assets Gross Amount Offset in the Statements of Financial Position Net Amounts of Assets Presented in the Statements of Financial Position Interest rate swaps $ — — — 139 (139 ) — The following table discloses the offsetting of financial liabilities and interest rate swap derivative liabilities. March 31, 2019 December 31, 2018 (Dollars in thousands) Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statements of Financial Position Net Amounts of Liabilities Presented in the Statements of Financial Position Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statements of Financial Position Net Amounts of Liabilities Presented in the Statements of Financial Position Interest rate swaps $ 5,380 — 5,380 3,908 (139 ) 3,769 Pursuant to the interest rate swap agreements, the Company pledged collateral to the counterparty in the form of debt securities totaling $6,402,000 at March 31, 2019 . There was $0 collateral pledged from the counterparty to the Company as of March 31, 2019 . There is the possibility that the Company may need to pledge additional collateral in the future if there were declines in the fair value of the interest rate swap derivative financial instruments versus the collateral pledged. Residential Real Estate Derivatives At March 31, 2019 , the Company had residential real estate derivatives for commitments (“interest rate locks”) to fund certain residential real estate loans to be sold into the secondary market. At March 31, 2019 and December 31, 2018 , loan commitments with interest rate lock commitments totaled $82,604,000 and $59,974,000 , respectively, and the fair value of the related derivatives was included in other assets with corresponding changes recorded in gain on sale of loans. It has been the Company’s practice to enter into “best efforts” forward sales commitments for the future delivery of residential real estate loans to third party investors when interest rate lock commitments are entered into in order to economically hedge the effect of changes in interest rates resulting from its commitments to fund the loans. Forward sales commitments on a “best efforts” basis are not designated in hedge relationships until the loan is funded. Due to the forward sales commitments being short-term in nature, the corresponding derivatives are not significant. The Company also enters into free-standing derivatives to mitigate the interest rate risk associated with certain residential real estate loans to be sold. These derivatives include forward commitments to sell to-be-announced securities (“TBA”) which are used to economically hedge the interest rate risk associated with certain residential real estate loans held for sale and unfunded commitments. At March 31, 2019 and December 31, 2018 , TBA commitments were $52,500,000 and $40,750,000 , respectively, and the fair value of the related derivatives was included in other liabilities with corresponding changes recorded in gain on sale of loans.

Other Expenses

Other Expenses	3 Months Ended
	Mar. 31, 2019
Other Expenses [Abstract]
Other Expenses	Other Expenses Other expenses consists of the following: Three Months ended (Dollars in thousands) March 31, March 31, Debit card expenses $ 1,869 1,640 Consulting and outside services 1,767 1,379 Telephone 1,175 1,021 Employee expenses 996 791 Business development 890 468 Loan expenses 859 804 Postage 833 779 Printing and supplies 725 691 VIE amortization and other expenses 545 474 ATM expenses 494 289 Accounting and audit fees 453 418 Checking and operating expenses 362 113 Legal fees 307 314 Mergers and acquisition expenses 214 1,836 Other 778 1,144 Total other expenses $ 12,267 12,161

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The following table illustrates the activity within accumulated other comprehensive income (loss) by component, net of tax: (Dollars in thousands) Gains (Losses) on Available-For-Sale Debt Securities Losses on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2018 $ 5,031 (7,010 ) (1,979 ) Other comprehensive (loss) income before reclassifications (19,196 ) 3,269 (15,927 ) Reclassification adjustments for losses included in net income 211 672 883 Net current period other comprehensive (loss) income (18,985 ) 3,941 (15,044 ) Balance at March 31, 2018 $ (13,954 ) (3,069 ) (17,023 ) Balance at January 1, 2019 $ (6,613 ) (2,814 ) (9,427 ) Other comprehensive income (loss) before reclassifications 34,681 (1,369 ) 33,312 Reclassification adjustments for (gains) losses included in net income (165 ) 167 2 Net current period other comprehensive income (loss) 34,516 (1,202 ) 33,314 Balance at March 31, 2019 $ 27,903 (4,016 ) 23,887

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period presented. Diluted earnings per share is computed by including the net increase in shares as if dilutive outstanding restricted stock awards were vested and stock options were exercised, using the treasury stock method. Basic and diluted earnings per share has been computed based on the following: Three Months ended (Dollars in thousands, except per share data) March 31, March 31, Net income available to common stockholders, basic and diluted $ 49,132 38,559 Average outstanding shares - basic 84,549,974 80,808,904 Add: dilutive restricted stock awards and stock options 64,274 78,231 Average outstanding shares - diluted 84,614,248 80,887,135 Basic earnings per share $ 0.58 0.48 Diluted earnings per share $ 0.58 0.48 There were 41,593 and 0 restricted stock awards and stock options excluded from the diluted average outstanding share calculation for the three months ended March 31, 2019 and 2018 , respectively. Anti-dilution occurs when the unrecognized compensation cost per share of a restricted stock award or the exercise price of a stock option exceeds the market price of the Company’s stock.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There is a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Transfers in and out of Level 1 (quoted prices in active markets), Level 2 (significant other observable inputs) and Level 3 (significant unobservable inputs) are recognized on the actual transfer date. There were no transfers between fair value hierarchy levels during the three month periods ended March 31, 2019 and 2018 . Recurring Measurements The following is a description of the inputs and valuation methodologies used for assets and liabilities measured at fair value on a recurring basis, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2019 . Debt securities, available-for-sale: fair value for available-for-sale debt securities is estimated by obtaining quoted market prices for identical assets, where available. If such prices are not available, fair value is based on independent asset pricing services and models, the inputs of which are market-based or independently sourced market parameters, including but not limited to, yield curves, interest rates, volatilities, market spreads, prepayments, defaults, recoveries, cumulative loss projections, and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Where Level 1 or Level 2 inputs are not available, such securities are classified as Level 3 within the hierarchy. Fair value determinations of available-for-sale debt securities are the responsibility of the Company’s corporate accounting and treasury departments. The Company obtains fair value estimates from independent third party vendors on a monthly basis. The vendors’ pricing system methodologies, procedures and system controls are reviewed to ensure they are appropriately designed and operating effectively. The Company reviews the vendors’ inputs for fair value estimates and the recommended assignments of levels within the fair value hierarchy. The review includes the extent to which markets for debt securities are determined to have limited or no activity, or are judged to be active markets. The Company reviews the extent to which observable and unobservable inputs are used as well as the appropriateness of the underlying assumptions about risk that a market participant would use in active markets, with adjustments for limited or inactive markets. In considering the inputs to the fair value estimates, the Company places less reliance on quotes that are judged to not reflect orderly transactions, or are non-binding indications. In assessing credit risk, the Company reviews payment performance, collateral adequacy, third party research and analyses, credit rating histories and issuers’ financial statements. For those markets determined to be inactive or limited, the valuation techniques used are models for which management has verified that discount rates are appropriately adjusted to reflect illiquidity and credit risk. Loans held for sale, at fair value: loans held for sale measured at fair value, for which an active secondary market and readily available market prices exist, are initially valued at the transaction price and are subsequently valued by using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors. Loans held for sale measured at fair value are classified within Level 2. Included in gain on sale of loans were net losses of $1,000 and $108,000 for the three month periods ended March 31, 2019 and 2018 , respectively, from the changes in fair value of loans held for sale measured at fair value. Electing to measure loans held for sale at fair value reduces certain timing differences and better matches changes in fair value of these assets with changes in the value of the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting. Interest rate swap derivative financial instruments: fair values for interest rate swap derivative financial instruments are based upon the estimated amounts to settle the contracts considering current interest rates and are calculated using discounted cash flows that are observable or that can be corroborated by observable market data and, therefore, are classified within Level 2 of the valuation hierarchy. The inputs used to determine fair value include the 3 month LIBOR forward curve to estimate variable rate cash inflows and the Fed Funds Effective Swap Rate to estimate the discount rate. The estimated variable rate cash inflows are compared to the fixed rate outflows and such difference is discounted to a present value to estimate the fair value of the interest rate swaps. The Company also obtains and compares the reasonableness of the pricing from an independent third party. The following tables disclose the fair value measurement of assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Debt securities, available-for-sale U.S. government and federal agency $ 21,521 — 21,521 — U.S. government sponsored enterprises 106,457 — 106,457 — State and local governments 725,191 — 725,191 — Corporate bonds 218,548 — 218,548 — Residential mortgage-backed securities 825,048 — 825,048 — Commercial mortgage-backed securities 625,557 — 625,557 — Loans held for sale, at fair value 29,389 — 29,389 — Total assets measured at fair value on a recurring basis $ 2,551,711 — 2,551,711 — Interest rate swaps $ 5,380 — 5,380 — Total liabilities measured at fair value on a recurring basis $ 5,380 — 5,380 — Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Debt securities, available-for-sale U.S. government and federal agency $ 23,649 — 23,649 — U.S. government sponsored enterprises 120,208 — 120,208 — State and local governments 852,250 — 852,250 — Corporate bonds 290,817 — 290,817 — Residential mortgage-backed securities 792,915 — 792,915 — Commercial mortgage-backed securities 491,824 — 491,824 — Loans held for sale, at fair value 33,156 — 33,156 — Total assets measured at fair value on a recurring basis $ 2,604,819 — 2,604,819 — Interest rate swaps $ 3,769 — 3,769 — Total liabilities measured at fair value on a recurring basis $ 3,769 — 3,769 — Non-recurring Measurements The following is a description of the inputs and valuation methodologies used for assets recorded at fair value on a non-recurring basis, as well as the general classification of such assets pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended March 31, 2019 . Other real estate owned: OREO is initially recorded at fair value less estimated cost to sell, establishing a new cost basis. OREO is subsequently accounted for at lower of cost or fair value less estimated cost to sell. Estimated fair value of OREO is based on appraisals or evaluations (new or updated). OREO is classified within Level 3 of the fair value hierarchy. Collateral-dependent impaired loans, net of ALLL: loans included in the Company’s loan portfolio for which it is probable that the Company will not collect all principal and interest due according to contractual terms are considered impaired. Estimated fair value of collateral-dependent impaired loans is based on the fair value of the collateral, less estimated cost to sell. Collateral-dependent impaired loans are classified within Level 3 of the fair value hierarchy. The Company’s credit department reviews appraisals for OREO and collateral-dependent loans, giving consideration to the highest and best use of the collateral. The appraisal or evaluation (new or updated) is considered the starting point for determining fair value. The valuation techniques used in preparing appraisals or evaluations (new or updated) include the cost approach, income approach, sales comparison approach, or a combination of the preceding valuation techniques. The key inputs used to determine the fair value of the collateral-dependent loans and OREO include selling costs, discounted cash flow rate or capitalization rate, and adjustment to comparables. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. The Company also considers other factors and events in the environment that may affect the fair value. The appraisals or evaluations (new or updated) are reviewed at least quarterly and more frequently based on current market conditions, including deterioration in a borrower’s financial condition and when property values may be subject to significant volatility. After review and acceptance of the collateral appraisal or evaluation (new or updated), adjustments to the impaired loan or OREO may occur. The Company generally obtains appraisals or evaluations (new or updated) annually. The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other real estate owned $ 204 — — 204 Collateral-dependent impaired loans, net of ALLL 8 — — 8 Total assets measured at fair value on a non-recurring basis $ 212 — — 212 Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other real estate owned $ 1,011 — — 1,011 Collateral-dependent impaired loans, net of ALLL 6,985 — — 6,985 Total assets measured at fair value on a non-recurring basis $ 7,996 — — 7,996 Non-recurring Measurements Using Significant Unobservable Inputs (Level 3) The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value March 31, 2019 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 204 Sales comparison approach Selling costs 8.0% - 15.0% (10.6%) Collateral-dependent impaired loans, net of ALLL $ 8 Sales comparison approach Selling costs 10.0% - 10.0% (10.0%) Fair Value December 31, 2018 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 1,011 Sales comparison approach Selling costs 8.0% - 15.0% (9.2%) Collateral-dependent impaired loans, net of ALLL $ 2,384 Sales comparison approach Selling costs 8.0% - 20.0% (9.9%) 4,601 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 6,985 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets. Fair Value of Financial Instruments The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Carrying Amount March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and cash equivalents $ 202,527 202,527 — — Debt securities, held-to-maturity 255,572 — 261,408 — Loans receivable, net of ALLL 8,196,284 — — 8,148,954 Total financial assets $ 8,654,383 202,527 261,408 8,148,954 Financial liabilities Term deposits $ 1,089,684 — 1,089,785 — FHLB advances 154,683 — 154,915 — Repurchase agreements and other borrowed funds 504,358 — 504,358 — Subordinated debentures 134,048 — 121,369 — Total financial liabilities $ 1,882,773 — 1,870,427 — Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Carrying Amount December 31, 2018 Quoted Prices Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and cash equivalents $ 203,790 203,790 — — Debt securities, held-to-maturity 297,915 — 288,256 — Loans receivable, net of ALLL 8,156,310 — — 8,079,112 Total financial assets $ 8,658,015 203,790 288,256 8,079,112 Financial liabilities Term deposits $ 1,070,208 — 1,069,777 — FHLB advances 440,175 — 439,615 — Repurchase agreements and other borrowed funds 410,859 — 410,859 — Subordinated debentures 134,051 — 120,302 — Total financial liabilities $ 2,055,293 — 2,040,553 —

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 30, 2019, the Company acquired the outstanding common stock of FNB Bancorp and its wholly-owned subsidiary, The First National Bank of Layton, a community bank based in Layton, Utah. FNB provides banking services to individuals and businesses throughout Utah with locations in Layton, Bountiful, Clearfield and Draper. The branches of FNB, along with the Bank’s branches operating in Utah, will operate as a new division of the Bank under the name “First Community Bank Utah, division of Glacier Bank.” The initial accounting for the FNB acquisition has not been completed because the fair value of financial assets, financial liabilities and goodwill has not yet been determined. On April 3, 2019, the Company announced the signing of a definitive agreement to acquire Heritage Bancorp and its wholly-owned subsidiary, Heritage Bank of Nevada, a community bank based in Reno, Nevada (collectively, “Heritage”). Heritage provides banking services to individuals and businesses throughout northern Nevada with locations in Carson City, Gardnerville, Reno and Sparks. As of March 31, 2019, Heritage had total assets of $840,769,000 , gross loans of $589,458,000 and total deposits of $722,955,000 . The acquisition is subject to required regulatory approvals and other customary conditions of closing and is anticipated to take place in the third quarter of 2019. Upon closing of the transaction, the branches of Heritage will operate as a new division of the Bank.

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Glacier Bancorp, Inc. (“Company”) is a Montana corporation headquartered in Kalispell, Montana. The Company provides a full range of banking services to individuals and businesses in Montana, Idaho, Utah, Washington, Wyoming, Colorado and Arizona through its wholly-owned bank subsidiary, Glacier Bank (“Bank”). The Company offers a wide range of banking products and services, including: 1) retail banking; 2) business banking; 3) real estate, commercial, agriculture and consumer loans; and 4) mortgage origination services. The Company serves individuals, small to medium-sized businesses, community organizations and public entities. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the Company’s financial condition as of March 31, 2019 , the results of operations and comprehensive income for the three month periods ended March 31, 2019 and 2018 , and changes in stockholders’ equity and cash flows for the three month periods ended March 31, 2019 and 2018 . The condensed consolidated statement of financial condition of the Company as of December 31, 2018 has been derived from the audited consolidated statements of the Company as of that date. The accompanying unaudited condensed consolidated financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 . Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results anticipated for the year ending December 31, 2019 . The Company is a defendant in legal proceedings arising in the normal course of business. In the opinion of management, the disposition of pending litigation will not have a material affect on the Company’s consolidated financial position, results of operations or liquidity. Material estimates that are particularly susceptible to significant change include: 1) the determination of the allowance for loan and lease losses (“ALLL” or “allowance”); 2) the valuation of debt securities; 3) the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans; and 4) the evaluation of goodwill impairment. For the determination of the ALLL and real estate valuation estimates, management obtains independent appraisals (new or updated) for significant items. Estimates relating to investment valuations are obtained from independent third parties. Estimates relating to the evaluation of goodwill for impairment are determined based on internal calculations using significant independent party inputs.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements of the Company include the parent holding company and the Bank. The Bank consists of fourteen bank divisions, a treasury division, an information technology division and a centralized mortgage division. The treasury division includes the Bank’s investment portfolio and wholesale borrowings, the information technology division includes the Bank’s internal data processing, and the centralized mortgage division includes mortgage loan servicing and secondary market sales. The Bank divisions operate under separate names, management teams and advisory directors. The Company considers the Bank to be its sole operating segment as the Bank 1) engages in similar bank business activity from which it earns revenues and incurs expenses; 2) the operating results of the Bank are regularly reviewed by the Chief Executive Officer (“CEO”) (i.e., the chief operating decision maker) who makes decisions about resources to be allocated to the Bank; and 3) financial information is available for the Bank. All significant inter-company transactions have been eliminated in consolidation. The Bank has subsidiary interests in variable interest entities (“VIE”) for which the Bank has both the power to direct the VIE’s significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could potentially be significant to the VIE. These subsidiary interests are included in the Company’s consolidated financial statements. The Bank also has subsidiary interests in VIEs for which the Bank does not have a controlling financial interest and is not the primary beneficiary. These subsidiary interests are not included in the Company’s consolidated financial statements. The parent holding company owns non-bank subsidiaries that have issued trust preferred securities as Tier 1 capital instruments. The trust subsidiaries are not included in the Company’s consolidated financial statements. The Company's investments in the trust subsidiaries are included in other assets on the Company's statements of financial condition. On April 30, 2019, the Company acquired the outstanding common stock of FNB Bancorp and its wholly-owned subsidiary, The First National Bank of Layton, a community bank based in Layton, Utah (collectively, “FNB”). As of March 31, 2019, FNB had total assets of $328,893,000 , gross loans of $248,725,000 and total deposits of $279,674,000 . For additional information relating to this subsequent event, see Note 13.
Loans Receivable	Loans Receivable Loans that are intended to be held-to-maturity are reported at the unpaid principal balance less net charge-offs and adjusted for deferred fees and costs on originated loans and unamortized premiums or discounts on acquired loans. Fees and costs on originated loans and premiums or discounts on acquired loans are deferred and subsequently amortized or accreted as a yield adjustment over the expected life of the loan utilizing the interest method. The objective of the interest method is to calculate periodic interest income at a constant effective yield. When a loan is paid off prior to maturity, the remaining fees and costs on originated loans and premiums or discounts on acquired loans are immediately recognized into interest income. The Company’s loan segments, which are based on the purpose of the loan, include residential real estate, commercial, and consumer loans. The Company’s loan classes, a further disaggregation of segments, include residential real estate loans (residential real estate segment), commercial real estate and other commercial loans (commercial segment), and home equity and other consumer loans (consumer segment). Loans that are thirty days or more past due based on payments received and applied to the loan are considered delinquent. Loans are designated non-accrual and the accrual of interest is discontinued when the collection of the contractual principal or interest is unlikely. A loan is typically placed on non-accrual when principal or interest is due and has remained unpaid for ninety days or more. When a loan is placed on non-accrual status, interest previously accrued but not collected is reversed against current period interest income. Subsequent payments on non-accrual loans are applied to the outstanding principal balance if doubt remains as to the ultimate collectability of the loan. Interest accruals are not resumed on partially charged-off impaired loans. For other loans on nonaccrual, interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest. The Company considers impaired loans to be the primary credit quality indicator for monitoring the credit quality of the loan portfolio. Loans are designated impaired when, based upon current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement and, therefore, the Company has serious doubts as to the ability of such borrowers to fulfill the contractual obligation. Impaired loans include non-performing loans (i.e., non-accrual loans and accruing loans ninety days or more past due) and accruing loans under ninety days past due where it is probable payments will not be received according to the loan agreement (e.g., troubled debt restructuring). Interest income on accruing impaired loans is recognized using the interest method. The Company measures impairment on a loan-by-loan basis in the same manner for each class within the loan portfolio. An insignificant delay or shortfall in the amounts of payments would not cause a loan or lease to be considered impaired. The Company determines the significance of payment delays and shortfalls on a case-by-case basis, taking into consideration all of the facts and circumstances surrounding the loan and the borrower, including the length and reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest due. A restructured loan is considered a troubled debt restructuring (“TDR”) if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. The Company periodically enters into restructure agreements with borrowers whereby the loans were previously identified as TDRs. When such circumstances occur, the Company carefully evaluates the facts of the subsequent restructure to determine the appropriate accounting and under certain circumstances it may be acceptable not to account for the subsequently restructured loan as a TDR. When assessing whether a concession has been granted by the Company, any prior forgiveness on a cumulative basis is considered a continuing concession. A TDR loan is considered an impaired loan and a specific valuation allowance is established when the fair value of the collateral-dependent loan or present value of the loan’s expected future cash flows (discounted at the loan’s effective interest rate based on the original contractual rate) is lower than the carrying value of the impaired loan. The Company has made the following types of loan modifications, some of which were considered a TDR: • reduction of the stated interest rate for the remaining term of the debt; • extension of the maturity date(s) at a stated rate of interest lower than the current market rate for newly originated debt having similar risk characteristics; and • reduction of the face amount of the debt as stated in the debt agreements. The Company recognizes that while borrowers may experience deterioration in their financial condition, many continue to be creditworthy customers who have the willingness and capacity for debt repayment. In determining whether non-restructured or unimpaired loans issued to a single or related party group of borrowers should continue to accrue interest when the borrower has other loans that are impaired or are TDRs, the Company on a quarterly or more frequent basis performs an updated and comprehensive assessment of the willingness and capacity of the borrowers to timely and ultimately repay their total debt obligations, including contingent obligations. Such analysis takes into account current financial information about the borrowers and financially responsible guarantors, if any, including for example: • analysis of global, i.e., aggregate debt service for total debt obligations; • assessment of the value and security protection of collateral pledged using current market conditions and alternative market assumptions across a variety of potential future situations; and • loan structures and related covenants. For additional information relating to loans, see Note 3.
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses Based upon management’s analysis of the Company’s loan portfolio, the balance of the ALLL is an estimate of probable credit losses known and inherent within the Bank’s loan portfolio as of the date of the consolidated financial statements. The ALLL is analyzed at the loan class level and is maintained within a range of estimated losses. Determining the adequacy of the ALLL involves a high degree of judgment and is inevitably imprecise as the risk of loss is difficult to quantify. The determination of the ALLL and the related provision for loan losses is a critical accounting estimate that involves management’s judgments about known relevant internal and external environmental factors that affect loan losses. The balance of the ALLL is highly dependent upon management’s evaluations of borrowers’ current and prospective performance, appraisals and other variables affecting the quality of the loan portfolio. Individually significant loans and major lending areas are reviewed periodically to determine potential problems at an early date. Changes in management’s estimates and assumptions are reasonably possible and may have a material impact upon the Company’s consolidated financial statements, results of operations or capital. Risk characteristics considered in the ALLL analysis applicable to each loan class within the Company's loan portfolio are as follows: Residential Real Estate. Residential real estate loans are secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan class include a large number of borrowers, geographic dispersion of market areas and the loans are originated for relatively smaller amounts. Commercial Real Estate . Commercial real estate loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operation of the property securing the loan and/or the business conducted on the property securing the loan. Credit risk in these loans is impacted by the creditworthiness of a borrower, valuation of the property securing the loan and conditions within the local economies in the Company’s diverse, geographic market areas. Commercial . Commercial loans consist of loans to commercial customers for use in financing working capital needs, equipment purchases and business expansions. The loans in this category are repaid primarily from the cash flow of a borrower’s principal business operation. Credit risk in these loans is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations across the Company’s diverse, geographic market areas. Home Equity . Home equity loans consist of junior lien mortgages and first and junior lien lines of credit (revolving open-end and amortizing closed-end) secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans is impacted by economic conditions within the Company’s market areas that affect the value of the residential property securing the loans and affect the borrowers' personal incomes. Mitigating risk factors for this loan class are a large number of borrowers, geographic dispersion of market areas and the loans are originated for terms that range from 10 to 15 years . Other Consumer . The other consumer loan portfolio consists of various short-term loans such as automobile loans and loans for other personal purposes. Repayment of these loans is primarily dependent on the personal income of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s diverse, geographic market area) and the creditworthiness of a borrower. The ALLL consists of a specific valuation allowance component and a general valuation allowance component. The specific component relates to loans that are determined to be impaired and individually evaluated for impairment. The Company measures impairment on a loan-by-loan basis based on the present value of expected future cash flows discounted at the loan’s effective interest rate, except when it is determined that repayment of the loan is expected to be provided solely by the underlying collateral. For impairment based on expected future cash flows, the Company considers all information available as of a measurement date, including past events, current conditions, potential prepayments, and estimated cost to sell when such costs are expected to reduce the cash flows available to repay or otherwise satisfy the loan. For alternative ranges of cash flows, the likelihood of the possible outcomes is considered in determining the best estimate of expected future cash flows. The effective interest rate for a loan restructured in a TDR is based on the original contractual rate. For collateral-dependent loans and real estate loans for which foreclosure or a deed-in-lieu of foreclosure is probable, impairment is measured by the fair value of the collateral, less estimated cost to sell. The fair value of the collateral is determined primarily based upon appraisal or evaluation of the underlying real property value. The general valuation allowance component relates to probable credit losses inherent in the balance of the loan portfolio based on historical loss experience, adjusted for changes in trends and conditions of qualitative or environmental factors. The historical loss experience is based on the previous twelve quarters loss experience by loan class adjusted for risk characteristics in the existing loan portfolio. The same trends and conditions are evaluated for each class within the loan portfolio; however, the risk characteristics are weighted separately at the individual class level based on the Company’s judgment and experience. The changes in trends and conditions evaluated for each class within the loan portfolio include the following: • changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses; • changes in global, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments; • changes in the nature and volume of the portfolio and in the terms of loans; • changes in experience, ability, and depth of lending management and other relevant staff; • changes in the volume and severity of past due and nonaccrual loans; • changes in the quality of the Company’s loan review system; • changes in the value of underlying collateral for collateral-dependent loans; • the existence and effect of any concentrations of credit, and changes in the level of such concentrations; and • the effect of other external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the Company’s existing portfolio. The ALLL is increased by provisions for loan losses which are charged to expense. The portions of loan and overdraft balances determined by management to be uncollectible are charged-off as a reduction of the ALLL and recoveries of amounts previously charged-off are credited as an increase to the ALLL. The Company’s charge-off policy is consistent with bank regulatory standards. Consumer loans generally are charged-off when the loan becomes over 120 days delinquent. Real estate acquired as a result of foreclosure or by deed-in-lieu of foreclosure is classified as other real estate owned (“OREO”) until such time as it is sold. At acquisition date, the assets and liabilities of acquired banks are recorded at their estimated fair values which results in no ALLL carried over from acquired banks. Subsequent to acquisition, an allowance will be recorded on the acquired loan portfolios for further credit deterioration, if any.
Lessee Leases	Leases The Company leases certain land, premises and equipment from third parties. A lessee lease is classified as an operating lease unless it meets certain criteria (e.g., lease contains option to purchase that Company is reasonably certain to exercise), in which case it is classified as a finance lease. Effective January 1, 2019, operating leases are included in net premises and equipment and other liabilities on the Company’s statements of financial condition and lease expense for lease payments is recognized on a straight-line basis over the lease term. Finance leases are included in net premises and equipment and other borrowed funds on the Company’s statements of financial condition. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. An ROU asset represents the right to use the underlying asset for the lease term and also includes any direct costs and payments made prior to lease commencement and excludes lease incentives. When an implicit rate is not available, an incremental borrowing rate based on the information available at commencement date is used in determining the present value of the lease payments. A lease term may include an option to extend or terminate the lease when it is reasonably certain the option will be exercised. The Company accounts for lease and nonlease components (e.g., common-area maintenance) together as a single combined lease component for all asset classes. Short-term leases of 12 months or less are excluded from accounting guidance; as a result, the lease payments are recognized on a straight-line basis over the lease term and the leases are not reflected on the Company’s statements of financial condition. Renewal and termination options are considered when determining short-term leases. Leases are accounted for on an individual lease level. Lease improvements incurred at the inception of the lease are recorded as an asset and depreciated over the initial term of the lease and lease improvements incurred subsequently are depreciated over the remaining term of the lease.
Lessor Leases	The Company also leases certain premises and equipment to third parties. A lessor lease is classified as an operating lease unless it meets certain criteria that would classify it as either a sales-type lease or a direct financing lease. For additional information relating to leases, see Note 4.
Revenue Recognition	Revenue Recognition The Company recognizes revenue when services or products are transferred to customers in an amount that reflects the consideration to which the Company expects to be entitled. The Company’s principal source of revenue is interest income from debt securities and loans. Revenue from contracts with customers within the scope of Accounting Standards Codification ™ (“ASC”) Topic 606 was $18,446,000 and $17,291,000 for the three months ended March 31, 2019 and 2018 , respectively, and largely consisted of revenue from service charges and other fees from deposits (e.g., overdraft fees, ATM fees, debit card fees). Due to the short-term nature of the Company’s contracts with customers, an insignificant amount of receivables related to such revenue was recorded at March 31, 2019 and December 31, 2018 and there were no impairment losses recognized. Policies specific to revenue from contracts with customers include the following: Service Charges. Revenue from service charges consists of service charges and fees on deposit accounts under depository agreements with customers to provide access to deposited funds and, when applicable, pay interest on deposits. Service charges on deposit accounts may be transactional or non-transactional in nature. Transactional service charges occur in the form of a service or penalty and are charged upon the occurrence of an event (e.g., overdraft fees, ATM fees, wire transfer fees). Transactional service charges are recognized as services are delivered to and consumed by the customer, or as penalty fees are charged. Non-transactional service charges are charges that are based on a broader service, such as account maintenance fees and dormancy fees, and are recognized on a monthly basis. Debit Card Fees. Revenue from debit card fees includes interchange fee income from debit cards processed through card association networks. Interchange fees represent a portion of a transaction amount that the Company and other involved parties retain to compensate themselves for giving the cardholder immediate access to funds. Interchange rates are generally set by the card association networks and are based on purchase volumes and other factors. The Company records interchange fees as services are provided.
Accounting Guidance Adopted in 2019 and Pending Adoption at March 31, 2019	Accounting Guidance Adopted in 2019 The ASC is the Financial Accounting Standards Board’s (“FASB”) officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Rules and interpretive releases of the Securities and Exchange Commission (“SEC”) under the authority of the federal securities laws are also sources of authoritative GAAP for the Company as an SEC registrant. All other accounting literature is non-authoritative. The following paragraphs provide descriptions of recently adopted Accounting Standards Updates (“ASU”) that may have had a material effect on the Company’s financial position or results of operations. ASU 2017-08 - Receivables - Nonrefundable Fees and Other Costs. In March 2017, FASB amended ASC Subtopic 310-20 to shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments required the premium to be amortized to the earliest call date instead of the maturity date. The amendments did not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2018 and any adjustments were to be reflected as of the beginning of the year that includes the interim period. Entities were to apply the amendments on a modified retrospective basis; therefore, a cumulative-effect reduction to retained earnings of $24,102,000 was recognized as of the January 1, 2019 effective date. The Company’s debt securities that were effected by the amendments were primarily in the state and local governments category. The Company’s accounting policies and procedures were updated to reflect the amendments. ASU 2016-02 - Leases. In February 2016, FASB amended ASC Topic 842 to address several aspects of lease accounting with the significant change being the recognition of lease assets and lease liabilities for leases previously classified as operating leases. The amendments were effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2018. The Company has lease agreements for which the amendments required the recognition of a lease liability to make lease payments and an ROU asset which represents its right to use the underlying asset for the lease term. An entity is permitted to elect not to restate its comparative periods in the period of adoption when transitioning to ASC Topic 842 and the Company made this election. In addition, the Company made the following elections related to implementation: 1) to not use hindsight in determining lease terms and in assessing impairment of ROU assets; and 2) to use the practical expedient package, which required no reassessment of whether existing contracts are or contain leases as well as no reassessment of lease classification for existing leases. At the date of adoption, the Company recognized an ROU asset and related lease liability on the Company’s statement of financial condition of $36,178,000 and $38,220,000 , respectively. The Company developed new processes to comply with the accounting and disclosure requirements of such amendments and policies and procedures were updated accordingly. Accounting Guidance Pending Adoption at March 31, 2019 The following paragraphs provide descriptions of newly issued but not yet effective ASUs that could have a material effect on the Company’s financial position or results of operations. ASU 2017-04 - Intangibles - Goodwill and Other. In January 2017, FASB amended ASC Topic 350 to simplify the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Instead, under these amendments, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company has goodwill from prior business combinations and performs an annual impairment test or more frequently if changes or circumstances occur that would more-likely-than-not reduce the fair value of the reporting unit below its carrying value. During the third quarter of 2018, the Company performed its impairment assessment and determined the fair value of the aggregated reporting units exceeded the carrying value, such that the Company’s goodwill was not considered impaired. Although the Company cannot anticipate future goodwill impairment assessments, based on the most recent assessment, it is unlikely that an impairment amount would need to be calculated and, therefore, the Company does not anticipate a material impact from these amendments to the Company’s financial position and results of operations. The current accounting policies and processes are not anticipated to change, except for the elimination of the Step 2 analysis. For additional information regarding goodwill impairment testing, see Note 5. ASU 2016-13 - Financial Instruments - Credit Losses. In June 2016, FASB amended ASC Topic 326 to replace the incurred loss model with a methodology that reflects expected credit losses over the life of the loan and requires consideration of a broader range of reasonable and supportable information to calculate credit loss estimates. The amendments are effective for public business entities for the first interim and annual reporting periods beginning after December 15, 2019. The Company is currently evaluating the impact of these amendments to the Company’s financial position and results of operations and currently does not know or cannot reasonably quantify the impact of the adoption of the amendments as a result of the complexity and extensive changes from the amendments. The ALLL is a material estimate of the Company and given the change from an incurred loss model to a methodology that considers the credit loss over the life of the loan, there is the potential for an increase in the ALLL at adoption date. The Company is anticipating a significant change in the processes and procedures to calculate the ALLL, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The Company will also develop new procedures for determining an allowance for credit losses relating to held-to-maturity debt securities. In addition, the current accounting policy and procedures for other-than-temporary impairment on available-for-sale debt securities will be replaced with an allowance approach. The Company has engaged a third-party vendor solution and is currently in the implementation phase and evaluating the appropriate models, loan pools and assumptions to be utilized. The project team anticipates running parallel models during 2019 to refine its processes and procedures. For additional information on the ALLL, see Note 3.

Debt Securities (Tables)

Debt Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Amortized cost, gross unrealized gains and losses and fair value of debt securities	The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of the Company’s debt securities: March 31, 2019 Amortized Cost Gross Unrealized Fair Value (Dollars in thousands) Gains Losses Available-for-sale U.S. government and federal agency $ 21,685 22 (186 ) 21,521 U.S. government sponsored enterprises 105,189 1,269 (1 ) 106,457 State and local governments 700,070 25,426 (305 ) 725,191 Corporate bonds 217,494 1,293 (239 ) 218,548 Residential mortgage-backed securities 828,103 3,154 (6,209 ) 825,048 Commercial mortgage-backed securities 612,407 14,235 (1,085 ) 625,557 Total available-for-sale 2,484,948 45,399 (8,025 ) 2,522,322 Held-to-maturity State and local governments 255,572 5,842 (6 ) 261,408 Total held-to-maturity 255,572 5,842 (6 ) 261,408 Total debt securities $ 2,740,520 51,241 (8,031 ) 2,783,730 December 31, 2018 Amortized Cost Gross Unrealized Fair Value (Dollars in thousands) Gains Losses Available-for-sale U.S. government and federal agency $ 23,757 54 (162 ) 23,649 U.S. government sponsored enterprises 120,670 52 (514 ) 120,208 State and local governments 844,636 18,936 (11,322 ) 852,250 Corporate bonds 292,052 378 (1,613 ) 290,817 Residential mortgage-backed securities 808,537 628 (16,250 ) 792,915 Commercial mortgage-backed securities 490,868 3,312 (2,356 ) 491,824 Total available-for-sale 2,580,520 23,360 (32,217 ) 2,571,663 Held-to-maturity State and local governments 297,915 1,380 (11,039 ) 288,256 Total held-to-maturity 297,915 1,380 (11,039 ) 288,256 Total debt securities $ 2,878,435 24,740 (43,256 ) 2,859,919
Amortized cost and fair value of securities by contractual maturity	The following table presents the amortized cost and fair value of available-for-sale and held-to-maturity debt securities by contractual maturity at March 31, 2019 . Actual maturities may differ from expected or contractual maturities since issuers have the right to prepay obligations with or without prepayment penalties. March 31, 2019 Available-for-Sale Held-to-Maturity (Dollars in thousands) Amortized Cost Fair Value Amortized Cost Fair Value Due within one year $ 88,040 88,011 — — Due after one year through five years 243,020 245,035 7,061 7,230 Due after five years through ten years 272,600 282,663 76,025 78,561 Due after ten years 440,778 456,008 172,486 175,617 1,044,438 1,071,717 255,572 261,408 Mortgage-backed securities 1 1,440,510 1,450,605 — — Total $ 2,484,948 2,522,322 255,572 261,408 ______________________________ 1 Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.
Proceeds from sales and calls of debt securities and the associated gains and losses	Proceeds from sales and calls of debt securities and the associated gains and losses that have been included in earnings are listed below: Three Months ended (Dollars in thousands) March 31, March 31, Available-for-sale Proceeds from sales and calls of debt securities $ 304,048 228,681 Gross realized gains 1 2,937 6 Gross realized losses 1 (2,716 ) (288 ) Held-to-maturity Proceeds from calls of debt securities 29,945 15,465 Gross realized gains 1 2 54 Gross realized losses 1 (10 ) (105 ) ______________________________ 1 The gain or loss on the sale or call of each debt security is determined by the specific identification method.
Summary of debt securities with an unrealized loss position	Debt securities with an unrealized loss position are summarized as follows: March 31, 2019 Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available-for-sale U.S. government and federal agency $ 6,553 (71 ) 9,565 (115 ) 16,118 (186 ) U.S. government sponsored enterprises — — 4,961 (1 ) 4,961 (1 ) State and local governments 3,736 (4 ) 34,411 (301 ) 38,147 (305 ) Corporate bonds 18,409 (37 ) 53,314 (202 ) 71,723 (239 ) Residential mortgage-backed securities 28,049 (86 ) 441,716 (6,123 ) 469,765 (6,209 ) Commercial mortgage-backed securities 20,363 (254 ) 49,988 (831 ) 70,351 (1,085 ) Total available-for-sale $ 77,110 (452 ) 593,955 (7,573 ) 671,065 (8,025 ) Held-to-maturity State and local governments $ — — 6,896 (6 ) 6,896 (6 ) Total held-to-maturity $ — — 6,896 (6 ) 6,896 (6 ) December 31, 2018 Less than 12 Months 12 Months or More Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available-for-sale U.S. government and federal agency $ 4,287 (27 ) 10,519 (135 ) 14,806 (162 ) U.S. government sponsored enterprises 43,400 (103 ) 35,544 (411 ) 78,944 (514 ) State and local governments 72,080 (922 ) 232,244 (10,400 ) 304,324 (11,322 ) Corporate bonds 119,111 (937 ) 114,800 (676 ) 233,911 (1,613 ) Residential mortgage-backed securities 132,405 (833 ) 537,202 (15,417 ) 669,607 (16,250 ) Commercial mortgage-backed securities 73,118 (402 ) 86,504 (1,954 ) 159,622 (2,356 ) Total available-for-sale $ 444,401 (3,224 ) 1,016,813 (28,993 ) 1,461,214 (32,217 ) Held-to-maturity State and local governments $ 87,392 (2,778 ) 126,226 (8,261 ) 213,618 (11,039 ) Total held-to-maturity $ 87,392 (2,778 ) 126,226 (8,261 ) 213,618 (11,039 )

Loans Receivable, Net (Tables)

Loans Receivable, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Summary of loans receivable	The following table presents loans receivable for each portfolio class of loans: At or for the Three Months ended At or for the Year ended (Dollars in thousands) March 31, December 31, Residential real estate loans $ 884,732 887,742 Commercial loans Real estate 4,686,082 4,657,561 Other commercial 1,909,452 1,911,171 Total 6,595,534 6,568,732 Consumer and other loans Home equity 562,381 544,688 Other consumer 283,423 286,387 Total 845,804 831,075 Loans receivable 8,326,070 8,287,549 Allowance for loan and lease losses (129,786 ) (131,239 ) Loans receivable, net $ 8,196,284 8,156,310 Net deferred origination (fees) costs included in loans receivable $ (5,022 ) (5,685 ) Net purchase accounting (discounts) premiums included in loans receivable $ (23,681 ) (25,172 ) Weighted-average interest rate on loans (tax-equivalent) 5.18 % 4.97 %
Summary of the activity in the ALLL	The following tables summarize the activity in the ALLL by loan class: Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 131,239 10,631 72,448 38,160 5,811 4,189 Provision for loan losses 57 278 (148 ) (915 ) 64 778 Charge-offs (3,341 ) (292 ) (283 ) (840 ) (8 ) (1,918 ) Recoveries 1,831 94 311 444 13 969 Balance at end of period $ 129,786 10,711 72,328 36,849 5,880 4,018 Three Months ended March 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Balance at beginning of period $ 129,568 10,798 68,515 39,303 6,204 4,748 Provision for loan losses 795 (177 ) 245 (3 ) (202 ) 932 Charge-offs (5,007 ) (3 ) (1,033 ) (1,788 ) (12 ) (2,171 ) Recoveries 2,252 16 615 596 50 975 Balance at end of period $ 127,608 10,634 68,342 38,108 6,040 4,484
Summary of ALLL and loans receivable	The following tables disclose the recorded investment in loans and the balance in the ALLL by loan class: March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans receivable Individually evaluated for impairment $ 104,411 10,646 65,104 22,954 3,057 2,650 Collectively evaluated for impairment 8,221,659 874,086 4,620,978 1,886,498 559,324 280,773 Total loans receivable $ 8,326,070 884,732 4,686,082 1,909,452 562,381 283,423 ALLL Individually evaluated for impairment $ 702 1 57 642 — 2 Collectively evaluated for impairment 129,084 10,710 72,271 36,207 5,880 4,016 Total ALLL $ 129,786 10,711 72,328 36,849 5,880 4,018 December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans receivable Individually evaluated for impairment $ 108,788 12,685 68,837 20,975 3,497 2,794 Collectively evaluated for impairment 8,178,761 875,057 4,588,724 1,890,196 541,191 283,593 Total loans receivable $ 8,287,549 887,742 4,657,561 1,911,171 544,688 286,387 ALLL Individually evaluated for impairment $ 3,223 83 568 2,313 39 220 Collectively evaluated for impairment 128,016 10,548 71,880 35,847 5,772 3,969 Total ALLL $ 131,239 10,631 72,448 38,160 5,811 4,189
Loan portfolio aging analysis	The following tables present an aging analysis of the recorded investment in loans by loan class: March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Accruing loans 30-59 days past due $ 28,938 5,211 14,345 5,620 2,273 1,489 Accruing loans 60-89 days past due 7,956 768 3,564 1,839 1,082 703 Accruing loans 90 days or more past due 2,451 998 234 998 115 106 Non-accrual loans 40,269 6,219 24,096 6,766 2,454 734 Total past due and non-accrual loans 79,614 13,196 42,239 15,223 5,924 3,032 Current loans receivable 8,246,456 871,536 4,643,843 1,894,229 556,457 280,391 Total loans receivable $ 8,326,070 884,732 4,686,082 1,909,452 562,381 283,423 December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Accruing loans 30-59 days past due $ 24,312 5,251 9,477 4,282 3,213 2,089 Accruing loans 60-89 days past due 9,255 860 3,231 3,838 735 591 Accruing loans 90 days or more past due 2,018 788 — 492 428 310 Non-accrual loans 47,252 8,021 27,264 8,619 2,575 773 Total past due and non-accrual loans 82,837 14,920 39,972 17,231 6,951 3,763 Current loans receivable 8,204,712 872,822 4,617,589 1,893,940 537,737 282,624 Total loans receivable $ 8,287,549 887,742 4,657,561 1,911,171 544,688 286,387
Summary of impaired loans	The following tables disclose information related to impaired loans by loan class: At or for the Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans with a specific valuation allowance Recorded balance $ 16,061 44 6,004 10,004 — 9 Unpaid principal balance 16,061 44 6,004 10,004 — 9 Specific valuation allowance 702 1 57 642 — 2 Average balance 17,629 1,001 7,674 8,636 60 258 Loans without a specific valuation allowance Recorded balance 88,350 10,602 59,100 12,950 3,057 2,641 Unpaid principal balance 105,100 12,009 69,991 16,516 3,699 2,885 Average balance 88,970 10,665 59,296 13,328 3,217 2,464 Total Recorded balance 104,411 10,646 65,104 22,954 3,057 2,650 Unpaid principal balance 121,161 12,053 75,995 26,520 3,699 2,894 Specific valuation allowance 702 1 57 642 — 2 Average balance 106,599 11,666 66,970 21,964 3,277 2,722 At or for the Year ended December 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer Loans with a specific valuation allowance Recorded balance $ 19,197 1,957 9,345 7,268 120 507 Unpaid principal balance 19,491 2,220 9,345 7,268 120 538 Specific valuation allowance 3,223 83 568 2,313 39 220 Average balance 19,519 2,686 8,498 7,081 82 1,172 Loans without a specific valuation allowance Recorded balance 89,591 10,728 59,492 13,707 3,377 2,287 Unpaid principal balance 107,486 11,989 71,300 17,689 3,986 2,522 Average balance 106,747 10,269 73,889 17,376 3,465 1,748 Total Recorded balance 108,788 12,685 68,837 20,975 3,497 2,794 Unpaid principal balance 126,977 14,209 80,645 24,957 4,106 3,060 Specific valuation allowance 3,223 83 568 2,313 39 220 Average balance 126,266 12,955 82,387 24,457 3,547 2,920
Summary of TDRs	The following tables present TDRs that occurred during the periods presented and the TDRs that occurred within the previous twelve months that subsequently defaulted during the periods presented: Three Months ended March 31, 2019 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer TDRs that occurred during the period Number of loans 4 — 1 2 1 — Pre-modification recorded balance $ 1,705 — 1,035 567 103 — Post-modification recorded balance $ 1,705 — 1,035 567 103 — TDRs that subsequently defaulted Number of loans — — — — — — Recorded balance $ — — — — — — Three Months ended March 31, 2018 (Dollars in thousands) Total Residential Real Estate Commercial Real Estate Other Commercial Home Equity Other Consumer TDRs that occurred during the period Number of loans 12 2 4 6 — — Pre-modification recorded balance $ 15,997 439 8,278 7,280 — — Post-modification recorded balance $ 15,997 439 8,278 7,280 — — TDRs that subsequently defaulted Number of loans 1 1 — — — — Recorded balance $ 334 334 — — — —

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Lease Summary	The following table summarizes the Company’s leases: March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases ROU assets $ 951 Accumulated depreciation (832 ) Net ROU assets $ 119 36,247 Lease liabilities $ 163 38,389 Weighted-average remaining lease term 2 years 19 years Weighted-average discount rate 5.3 % 3.7 %
Maturities of Lease Liabilities	Maturities of lease liabilities consist of the following: March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases Maturing within one year $ 92 3,286 Maturing one year through two years 77 3,238 Maturing two years through three years 1 3,032 Maturing three years through four years 1 2,832 Maturing four years through five years — 2,716 Thereafter — 39,839 Total lease payments 171 54,943 Present value of lease payments Short-term 86 1,920 Long-term 77 36,469 Total present value of lease payments 163 38,389 Difference between lease payments and present value of lease payments $ 8 16,554
Components of Lease Expense	The components of lease expense consist of the following: Three Months ended (Dollars in thousands) March 31, Finance lease cost Amortization of ROU assets $ 16 Interest on lease liabilities 2 Operating lease cost 913 Short-term lease cost 109 Variable lease cost 199 Sublease income (2 ) Total lease expense $ 1,237
Supplemental Cash Flow Information	Supplemental cash flow information related to leases is as follows: Three Months ended March 31, 2019 (Dollars in thousands) Finance Leases Operating Leases Cash paid for amounts included in the measurement of lease liabilities Operating cash flows $ 2 479 Financing cash flows 21 N/A

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the carrying value of goodwill	The following schedule discloses the changes in the carrying value of goodwill: Three Months ended (Dollars in thousands) March 31, March 31, Net carrying value at beginning of period $ 289,586 177,811 Acquisitions — 111,724 Net carrying value at end of period $ 289,586 289,535

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Carrying amounts of consolidated VIEs' assets and liabilities	The following table summarizes the carrying amounts of the consolidated VIEs’ assets and liabilities included in the Company’s statements of financial condition and are adjusted for intercompany eliminations. All assets presented can be used only to settle obligations of the consolidated VIEs and all liabilities presented consist of liabilities for which creditors and other beneficial interest holders therein have no recourse to the general credit of the Company. (Dollars in thousands) March 31, December 31, Assets Loans receivable $ 80,466 80,123 Accrued interest receivable 99 96 Other assets 45,808 45,779 Total assets $ 126,373 125,998 Liabilities Other borrowed funds $ 14,575 14,527 Accrued interest payable 3 1 Other liabilities 123 125 Total liabilities $ 14,701 14,653
Amortization expense and tax credits and other tax benefits recognized for qualified affordable housing project investments	The following table summarizes the amortization expense and the amount of tax credits and other tax benefits recognized for qualified affordable housing project investments during the periods presented. Three Months ended (Dollars in thousands) March 31, March 31, Amortization expense $ 1,417 891 Tax credits and other tax benefits recognized 1,958 1,240

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing [Abstract]
Carrying Value of Repurchase Agreements	The following tables summarize the carrying value of the Company’s repurchase agreements by remaining contractual maturity and category of collateral: March 31, 2019 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and Continuous Up to 30 Days Total U.S. government and federal agency $ 4,402 — 4,402 Residential mortgage-backed securities 397,077 — 397,077 Commercial mortgage-backed securities 88,141 — 88,141 Total $ 489,620 — 489,620 December 31, 2018 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and Continuous Up to 30 Days Total Residential mortgage-backed securities $ 328,174 — 328,174 Commercial mortgage-backed securities 66,339 1,638 67,977 Total $ 394,513 1,638 396,151

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of interest rate swap derivative financial instruments	As of March 31, 2019 , the Company’s interest rate swap derivative financial instruments were designated as cash flow hedges and are summarized as follows: (Dollars in thousands) Forecasted Notional Amount Variable Interest Rate 1 Fixed Interest Rate 1 Payment Term Interest rate swap $ 160,000 3 month LIBOR 3.378 % Oct. 21, 2014 - Oct. 21, 2021 Interest rate swap 100,000 3 month LIBOR 2.498 % Nov. 30, 2015 - Nov. 30, 2022 ______________________________ 1 The Company pays the fixed interest rate and the counterparty pays the Company the variable interest rate.
Summary of Pre-Tax Gains or Losses	The following table presents the pre-tax gains or losses recorded in OCI and the Company’s statements of operations relating to the interest rate swap derivative financial instruments: Three Months ended (Dollars in thousands) March 31, March 31, Interest rate swaps Amount of (loss) gain recognized in OCI $ (1,834 ) 4,379 Amount of loss reclassified from OCI to interest expense (223 ) (900 )
Offsetting assets	The following table discloses the offsetting of financial assets and interest rate swap derivative assets. March 31, 2019 December 31, 2018 (Dollars in thousands) Gross Amount of Recognized Assets Gross Amount Offset in the Statements of Financial Position Net Amounts of Assets Presented in the Statements of Financial Position Gross Amount of Recognized Assets Gross Amount Offset in the Statements of Financial Position Net Amounts of Assets Presented in the Statements of Financial Position Interest rate swaps $ — — — 139 (139 ) —
Offsetting liabilities	The following table discloses the offsetting of financial liabilities and interest rate swap derivative liabilities. March 31, 2019 December 31, 2018 (Dollars in thousands) Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statements of Financial Position Net Amounts of Liabilities Presented in the Statements of Financial Position Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statements of Financial Position Net Amounts of Liabilities Presented in the Statements of Financial Position Interest rate swaps $ 5,380 — 5,380 3,908 (139 ) 3,769

Other Expenses (Tables)

Other Expenses (Tables)	3 Months Ended
	Mar. 31, 2019
Other Expenses [Abstract]
Schedule of Other Expenses	Other expenses consists of the following: Three Months ended (Dollars in thousands) March 31, March 31, Debit card expenses $ 1,869 1,640 Consulting and outside services 1,767 1,379 Telephone 1,175 1,021 Employee expenses 996 791 Business development 890 468 Loan expenses 859 804 Postage 833 779 Printing and supplies 725 691 VIE amortization and other expenses 545 474 ATM expenses 494 289 Accounting and audit fees 453 418 Checking and operating expenses 362 113 Legal fees 307 314 Mergers and acquisition expenses 214 1,836 Other 778 1,144 Total other expenses $ 12,267 12,161

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Activity within Accumulated Other Comprehensive Income (Loss), Net of Tax	The following table illustrates the activity within accumulated other comprehensive income (loss) by component, net of tax: (Dollars in thousands) Gains (Losses) on Available-For-Sale Debt Securities Losses on Derivatives Used for Cash Flow Hedges Total Balance at January 1, 2018 $ 5,031 (7,010 ) (1,979 ) Other comprehensive (loss) income before reclassifications (19,196 ) 3,269 (15,927 ) Reclassification adjustments for losses included in net income 211 672 883 Net current period other comprehensive (loss) income (18,985 ) 3,941 (15,044 ) Balance at March 31, 2018 $ (13,954 ) (3,069 ) (17,023 ) Balance at January 1, 2019 $ (6,613 ) (2,814 ) (9,427 ) Other comprehensive income (loss) before reclassifications 34,681 (1,369 ) 33,312 Reclassification adjustments for (gains) losses included in net income (165 ) 167 2 Net current period other comprehensive income (loss) 34,516 (1,202 ) 33,314 Balance at March 31, 2019 $ 27,903 (4,016 ) 23,887

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Basic and diluted earnings per share	Basic and diluted earnings per share has been computed based on the following: Three Months ended (Dollars in thousands, except per share data) March 31, March 31, Net income available to common stockholders, basic and diluted $ 49,132 38,559 Average outstanding shares - basic 84,549,974 80,808,904 Add: dilutive restricted stock awards and stock options 64,274 78,231 Average outstanding shares - diluted 84,614,248 80,887,135 Basic earnings per share $ 0.58 0.48 Diluted earnings per share $ 0.58 0.48

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair value measurement of assets and liabilities measured at fair value on a recurring basis	The following tables disclose the fair value measurement of assets and liabilities measured at fair value on a recurring basis: Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Debt securities, available-for-sale U.S. government and federal agency $ 21,521 — 21,521 — U.S. government sponsored enterprises 106,457 — 106,457 — State and local governments 725,191 — 725,191 — Corporate bonds 218,548 — 218,548 — Residential mortgage-backed securities 825,048 — 825,048 — Commercial mortgage-backed securities 625,557 — 625,557 — Loans held for sale, at fair value 29,389 — 29,389 — Total assets measured at fair value on a recurring basis $ 2,551,711 — 2,551,711 — Interest rate swaps $ 5,380 — 5,380 — Total liabilities measured at fair value on a recurring basis $ 5,380 — 5,380 — Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Debt securities, available-for-sale U.S. government and federal agency $ 23,649 — 23,649 — U.S. government sponsored enterprises 120,208 — 120,208 — State and local governments 852,250 — 852,250 — Corporate bonds 290,817 — 290,817 — Residential mortgage-backed securities 792,915 — 792,915 — Commercial mortgage-backed securities 491,824 — 491,824 — Loans held for sale, at fair value 33,156 — 33,156 — Total assets measured at fair value on a recurring basis $ 2,604,819 — 2,604,819 — Interest rate swaps $ 3,769 — 3,769 — Total liabilities measured at fair value on a recurring basis $ 3,769 — 3,769 —
Fair value measurement of assets measured at fair value on a non-recurring basis	The following tables disclose the fair value measurement of assets with a recorded change during the period resulting from re-measuring the assets at fair value on a non-recurring basis: Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other real estate owned $ 204 — — 204 Collateral-dependent impaired loans, net of ALLL 8 — — 8 Total assets measured at fair value on a non-recurring basis $ 212 — — 212 Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Fair Value December 31, 2018 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Other real estate owned $ 1,011 — — 1,011 Collateral-dependent impaired loans, net of ALLL 6,985 — — 6,985 Total assets measured at fair value on a non-recurring basis $ 7,996 — — 7,996
Quantitative information about assets measured at fair value on a non-recurring basis for which Level 3 inputs were used	The following tables present additional quantitative information about assets measured at fair value on a non-recurring basis and for which the Company has utilized Level 3 inputs to determine fair value: Fair Value March 31, 2019 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 204 Sales comparison approach Selling costs 8.0% - 15.0% (10.6%) Collateral-dependent impaired loans, net of ALLL $ 8 Sales comparison approach Selling costs 10.0% - 10.0% (10.0%) Fair Value December 31, 2018 Quantitative Information about Level 3 Fair Value Measurements (Dollars in thousands) Valuation Technique Unobservable Input Range (Weighted-Average) 1 Other real estate owned $ 1,011 Sales comparison approach Selling costs 8.0% - 15.0% (9.2%) Collateral-dependent impaired loans, net of ALLL $ 2,384 Sales comparison approach Selling costs 8.0% - 20.0% (9.9%) 4,601 Combined approach Selling costs 10.0% - 10.0% (10.0%) $ 6,985 ______________________________ 1 The range for selling cost inputs represents reductions to the fair value of the assets.
Carrying amounts and estimated fair values of financial instruments not carried at fair value	The following tables present the carrying amounts, estimated fair values and the level within the fair value hierarchy of the Company’s financial instruments not carried at fair value. Receivables and payables due in one year or less, equity securities without readily determinable fair values and deposits with no defined or contractual maturities are excluded. Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Carrying Amount March 31, 2019 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and cash equivalents $ 202,527 202,527 — — Debt securities, held-to-maturity 255,572 — 261,408 — Loans receivable, net of ALLL 8,196,284 — — 8,148,954 Total financial assets $ 8,654,383 202,527 261,408 8,148,954 Financial liabilities Term deposits $ 1,089,684 — 1,089,785 — FHLB advances 154,683 — 154,915 — Repurchase agreements and other borrowed funds 504,358 — 504,358 — Subordinated debentures 134,048 — 121,369 — Total financial liabilities $ 1,882,773 — 1,870,427 — Fair Value Measurements At the End of the Reporting Period Using (Dollars in thousands) Carrying Amount December 31, 2018 Quoted Prices Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and cash equivalents $ 203,790 203,790 — — Debt securities, held-to-maturity 297,915 — 288,256 — Loans receivable, net of ALLL 8,156,310 — — 8,079,112 Total financial assets $ 8,658,015 203,790 288,256 8,079,112 Financial liabilities Term deposits $ 1,070,208 — 1,069,777 — FHLB advances 440,175 — 439,615 — Repurchase agreements and other borrowed funds 410,859 — 410,859 — Subordinated debentures 134,051 — 120,302 — Total financial liabilities $ 2,055,293 — 2,040,553 —

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended
	Mar. 31, 2019USD ($)quarteroperating_segmentdivision	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Number of Bank Divisions | division	14
Number of Operating Segments | operating_segment	1
Total assets	$ 12,073,779,000		$ 12,115,484,000
Gross loans	$ 8,326,070,000		8,287,549,000
Minimum Period Past Due to Consider Loan as Delinquent	30 days
Minimum Period Past Due to Consider Loan as Non Accrual	90 days
Number of Quarters Used to Evaluate Historical Loss Experience | quarter	12
Maximum Term Leases Will Be Considered Short-term	12 months
Revenue from Contracts with Customers	$ 18,446,000	$ 17,291,000
Impairment losses on receivables related to contracts with customers	0		$ 0
First Community Bank Utah
Total assets	328,893,000
Gross loans	248,725,000
Total deposits	279,674,000
Accounting Standards Update 2017-08
Effect of cumulative change on retained earnings from applying new accounting pronouncement	24,102,000
Accounting Standards Update 2016-02
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Assets	36,178,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Liabilities	$ 38,220,000
Consumer and Other
Minimum Number of Days Delinquent to Charge off Loans	120 days
Minimum Range
Number of years for home equity loan origination term	10 years
Maximum Range
Number of years for home equity loan origination term	15 years

Amortized Cost, Gross Unrealize

Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale
Amortized Cost	$ 2,484,948	$ 2,580,520
Gross Unrealized Gains	45,399	23,360
Gross Unrealized Losses	(8,025)	(32,217)
Fair Value	2,522,322	2,571,663
Held-to-maturity
Amortized Cost	255,572	297,915
Gross Unrealized Gains	5,842	1,380
Gross Unrealized Losses	(6)	(11,039)
Fair Value	261,408	288,256
Total
Amortized Cost	2,740,520	2,878,435
Gross Unrealized Gains	51,241	24,740
Gross Unrealized Losses	(8,031)	(43,256)
Fair Value	2,783,730	2,859,919
U.S. government and federal agency
Available-for-sale
Amortized Cost	21,685	23,757
Gross Unrealized Gains	22	54
Gross Unrealized Losses	(186)	(162)
Fair Value	21,521	23,649
U.S. government sponsored enterprises
Available-for-sale
Amortized Cost	105,189	120,670
Gross Unrealized Gains	1,269	52
Gross Unrealized Losses	(1)	(514)
Fair Value	106,457	120,208
State and local governments
Available-for-sale
Amortized Cost	700,070	844,636
Gross Unrealized Gains	25,426	18,936
Gross Unrealized Losses	(305)	(11,322)
Fair Value	725,191	852,250
Held-to-maturity
Amortized Cost	255,572	297,915
Gross Unrealized Gains	5,842	1,380
Gross Unrealized Losses	(6)	(11,039)
Fair Value	261,408	288,256
Corporate bonds
Available-for-sale
Amortized Cost	217,494	292,052
Gross Unrealized Gains	1,293	378
Gross Unrealized Losses	(239)	(1,613)
Fair Value	218,548	290,817
Residential mortgage-backed securities
Available-for-sale
Amortized Cost	828,103	808,537
Gross Unrealized Gains	3,154	628
Gross Unrealized Losses	(6,209)	(16,250)
Fair Value	825,048	792,915
Commercial mortgage-backed securities
Available-for-sale
Amortized Cost	612,407	490,868
Gross Unrealized Gains	14,235	3,312
Gross Unrealized Losses	(1,085)	(2,356)
Fair Value	$ 625,557	$ 491,824

Debt Securities Maturity Schedu

Debt Securities Maturity Schedule (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Available-for-Sale, Amortized Cost
Due within one year		$ 88,040
Due after one year through five years		243,020
Due after five years through ten years		272,600
Due after ten years		440,778
Total before mortgage-backed securities		1,044,438
Total		2,484,948	$ 2,580,520
Available-for-Sale, Fair Value
Due within one year		88,011
Due after one year through five years		245,035
Due after five years through ten years		282,663
Due after ten years		456,008
Total before mortgage-backed securities		1,071,717
Debt securities, available-for-sale		2,522,322	2,571,663
Held-to-Maturity, Amortized Cost
Due within one year		0
Due after one year through five years		7,061
Due after five years through ten years		76,025
Due after ten years		172,486
Total before mortgage-backed securities		255,572
Amortized Cost		255,572	297,915
Held-to-Maturity, Fair Value
Due within one year		0
Due after one year through five years		7,230
Due after five years through ten years		78,561
Due after ten years		175,617
Total before mortgage-backed securities		261,408
Total		261,408	$ 288,256
Mortgage-backed securities
Available-for-Sale, Amortized Cost
Mortgage-backed securities	[1]	1,440,510
Available-for-Sale, Fair Value
Mortgage-backed securities	[1]	1,450,605
Held-to-Maturity, Amortized Cost
Mortgage-backed securities	[1]	0
Held-to-Maturity, Fair Value
Mortgage-backed securities	[1]	$ 0
[1]	Mortgage-backed securities, which have prepayment provisions, are not assigned to maturity categories due to fluctuations in their prepayment speeds.

Proceeds From Sales and Calls o

Proceeds From Sales and Calls of Debt Securities and Associates Gains or Losses (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Available-for-sale
Sales of available-for-sale debt securities		$ 304,048	$ 228,681
Gross realized gains	[1]	2,937	6
Gross realized losses	[1]	(2,716)	(288)
Held-to-maturity
Proceeds from calls of debt securities		29,945	15,465
Gross realized gains	[1]	2	54
Gross realized losses	[1]	$ (10)	$ (105)
[1]	The gain or loss on the sale or call of each debt security is determined by the specific identification method.

Debt Securities with an Unreali

Debt Securities with an Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale, Fair Value
Less than 12 Months	$ 77,110	$ 444,401
12 Months or More	593,955	1,016,813
Total	671,065	1,461,214
Available-for-sale, Unrealized Loss
Less than 12 Months	(452)	(3,224)
12 Months or More	(7,573)	(28,993)
Total	(8,025)	(32,217)
Held-to-maturity, Fair Value
Less than 12 Months	0	87,392
12 Months or More	6,896	126,226
Total	6,896	213,618
Held-to-maturity, Unrealized Loss
Less than 12 Months	0	(2,778)
12 Months or More	(6)	(8,261)
Total	(6)	(11,039)
U.S. government and federal agency
Available-for-sale, Fair Value
Less than 12 Months	6,553	4,287
12 Months or More	9,565	10,519
Total	16,118	14,806
Available-for-sale, Unrealized Loss
Less than 12 Months	(71)	(27)
12 Months or More	(115)	(135)
Total	(186)	(162)
U.S. government sponsored enterprises
Available-for-sale, Fair Value
Less than 12 Months	0	43,400
12 Months or More	4,961	35,544
Total	4,961	78,944
Available-for-sale, Unrealized Loss
Less than 12 Months	0	(103)
12 Months or More	(1)	(411)
Total	(1)	(514)
State and local governments
Available-for-sale, Fair Value
Less than 12 Months	3,736	72,080
12 Months or More	34,411	232,244
Total	38,147	304,324
Available-for-sale, Unrealized Loss
Less than 12 Months	(4)	(922)
12 Months or More	(301)	(10,400)
Total	(305)	(11,322)
Held-to-maturity, Fair Value
Less than 12 Months	0	87,392
12 Months or More	6,896	126,226
Total	6,896	213,618
Held-to-maturity, Unrealized Loss
Less than 12 Months	0	(2,778)
12 Months or More	(6)	(8,261)
Total	(6)	(11,039)
Corporate bonds
Available-for-sale, Fair Value
Less than 12 Months	18,409	119,111
12 Months or More	53,314	114,800
Total	71,723	233,911
Available-for-sale, Unrealized Loss
Less than 12 Months	(37)	(937)
12 Months or More	(202)	(676)
Total	(239)	(1,613)
Residential mortgage-backed securities
Available-for-sale, Fair Value
Less than 12 Months	28,049	132,405
12 Months or More	441,716	537,202
Total	469,765	669,607
Available-for-sale, Unrealized Loss
Less than 12 Months	(86)	(833)
12 Months or More	(6,123)	(15,417)
Total	(6,209)	(16,250)
Commercial mortgage-backed securities
Available-for-sale, Fair Value
Less than 12 Months	20,363	73,118
12 Months or More	49,988	86,504
Total	70,351	159,622
Available-for-sale, Unrealized Loss
Less than 12 Months	(254)	(402)
12 Months or More	(831)	(1,954)
Total	$ (1,085)	$ (2,356)

Debt Securities (Details Textua

Debt Securities (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Other-than-temporary impairment on debt securities	$ 0	$ 0

Loans Receivable, Net Summary o

Loans Receivable, Net Summary of Loans Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Summary of Loans Receivable
Loans receivable	$ 8,326,070	$ 8,287,549
Allowance for loan and lease losses	(129,786)	(131,239)
Loans receivable, net	8,196,284	8,156,310
Net deferred origination (fees) costs included in loans receivable	(5,022)	(5,685)
Net purchase accounting (discounts) premiums included in loans receivable	$ (23,681)	$ (25,172)
Weighted-average interest rate on loans (tax-equivalent)	5.18%	4.97%
Residential Real Estate | Residential Real Estate
Summary of Loans Receivable
Loans receivable	$ 884,732	$ 887,742
Allowance for loan and lease losses	(10,711)	(10,631)
Commercial
Summary of Loans Receivable
Loans receivable	6,595,534	6,568,732
Commercial | Commercial Real Estate
Summary of Loans Receivable
Loans receivable	4,686,082	4,657,561
Allowance for loan and lease losses	(72,328)	(72,448)
Commercial | Other Commercial
Summary of Loans Receivable
Loans receivable	1,909,452	1,911,171
Allowance for loan and lease losses	(36,849)	(38,160)
Consumer and Other
Summary of Loans Receivable
Loans receivable	845,804	831,075
Consumer and Other | Home Equity
Summary of Loans Receivable
Loans receivable	562,381	544,688
Allowance for loan and lease losses	(5,880)	(5,811)
Consumer and Other | Other Consumer
Summary of Loans Receivable
Loans receivable	283,423	286,387
Allowance for loan and lease losses	$ (4,018)	$ (4,189)

ALLL Activity (Details)

ALLL Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Allowance for loan and lease losses
Balance at beginning of period	$ 131,239	$ 129,568
Provision for loan losses	57	795
Charge-offs	(3,341)	(5,007)
Recoveries	1,831	2,252
Balance at end of period	129,786	127,608
Residential Real Estate | Residential Real Estate
Allowance for loan and lease losses
Balance at beginning of period	10,631	10,798
Provision for loan losses	278	(177)
Charge-offs	(292)	(3)
Recoveries	94	16
Balance at end of period	10,711	10,634
Commercial | Commercial Real Estate
Allowance for loan and lease losses
Balance at beginning of period	72,448	68,515
Provision for loan losses	(148)	245
Charge-offs	(283)	(1,033)
Recoveries	311	615
Balance at end of period	72,328	68,342
Commercial | Other Commercial
Allowance for loan and lease losses
Balance at beginning of period	38,160	39,303
Provision for loan losses	(915)	(3)
Charge-offs	(840)	(1,788)
Recoveries	444	596
Balance at end of period	36,849	38,108
Consumer and Other | Home Equity
Allowance for loan and lease losses
Balance at beginning of period	5,811	6,204
Provision for loan losses	64	(202)
Charge-offs	(8)	(12)
Recoveries	13	50
Balance at end of period	5,880	6,040
Consumer and Other | Other Consumer
Allowance for loan and lease losses
Balance at beginning of period	4,189	4,748
Provision for loan losses	778	932
Charge-offs	(1,918)	(2,171)
Recoveries	969	975
Balance at end of period	$ 4,018	$ 4,484

ALLL and Loans Receivable Summa

ALLL and Loans Receivable Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	$ 104,411	$ 108,788
Collectively evaluated for impairment	8,221,659	8,178,761
Total loans receivable	8,326,070	8,287,549
Individually evaluated for impairment	702	3,223
Collectively evaluated for impairment	129,084	128,016
Total allowance for loan and lease losses	129,786	131,239
Residential Real Estate | Residential Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	10,646	12,685
Collectively evaluated for impairment	874,086	875,057
Total loans receivable	884,732	887,742
Individually evaluated for impairment	1	83
Collectively evaluated for impairment	10,710	10,548
Total allowance for loan and lease losses	10,711	10,631
Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	6,595,534	6,568,732
Commercial | Commercial Real Estate
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	65,104	68,837
Collectively evaluated for impairment	4,620,978	4,588,724
Total loans receivable	4,686,082	4,657,561
Individually evaluated for impairment	57	568
Collectively evaluated for impairment	72,271	71,880
Total allowance for loan and lease losses	72,328	72,448
Commercial | Other Commercial
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	22,954	20,975
Collectively evaluated for impairment	1,886,498	1,890,196
Total loans receivable	1,909,452	1,911,171
Individually evaluated for impairment	642	2,313
Collectively evaluated for impairment	36,207	35,847
Total allowance for loan and lease losses	36,849	38,160
Consumer and Other
Allowance for Loan and Lease Losses and Loans Receivable
Total loans receivable	845,804	831,075
Consumer and Other | Home Equity
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	3,057	3,497
Collectively evaluated for impairment	559,324	541,191
Total loans receivable	562,381	544,688
Individually evaluated for impairment	0	39
Collectively evaluated for impairment	5,880	5,772
Total allowance for loan and lease losses	5,880	5,811
Consumer and Other | Other Consumer
Allowance for Loan and Lease Losses and Loans Receivable
Individually evaluated for impairment	2,650	2,794
Collectively evaluated for impairment	280,773	283,593
Total loans receivable	283,423	286,387
Individually evaluated for impairment	2	220
Collectively evaluated for impairment	4,016	3,969
Total allowance for loan and lease losses	$ 4,018	$ 4,189

Loans Receivable Aging Analysis

Loans Receivable Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Loan portfolio aging analysis
Non-accrual loans	$ 40,269	$ 47,252
Total past due and non-accrual loans	79,614	82,837
Current loans receivable	8,246,456	8,204,712
Total loans receivable	8,326,070	8,287,549
Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	28,938	24,312
Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	7,956	9,255
Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	2,451	2,018
Residential Real Estate | Residential Real Estate
Loan portfolio aging analysis
Non-accrual loans	6,219	8,021
Total past due and non-accrual loans	13,196	14,920
Current loans receivable	871,536	872,822
Total loans receivable	884,732	887,742
Residential Real Estate | Residential Real Estate | Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	5,211	5,251
Residential Real Estate | Residential Real Estate | Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	768	860
Residential Real Estate | Residential Real Estate | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	998	788
Commercial
Loan portfolio aging analysis
Total loans receivable	6,595,534	6,568,732
Commercial | Commercial Real Estate
Loan portfolio aging analysis
Non-accrual loans	24,096	27,264
Total past due and non-accrual loans	42,239	39,972
Current loans receivable	4,643,843	4,617,589
Total loans receivable	4,686,082	4,657,561
Commercial | Commercial Real Estate | Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	14,345	9,477
Commercial | Commercial Real Estate | Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	3,564	3,231
Commercial | Commercial Real Estate | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	234	0
Commercial | Other Commercial
Loan portfolio aging analysis
Non-accrual loans	6,766	8,619
Total past due and non-accrual loans	15,223	17,231
Current loans receivable	1,894,229	1,893,940
Total loans receivable	1,909,452	1,911,171
Commercial | Other Commercial | Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	5,620	4,282
Commercial | Other Commercial | Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	1,839	3,838
Commercial | Other Commercial | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	998	492
Consumer and Other
Loan portfolio aging analysis
Total loans receivable	845,804	831,075
Consumer and Other | Home Equity
Loan portfolio aging analysis
Non-accrual loans	2,454	2,575
Total past due and non-accrual loans	5,924	6,951
Current loans receivable	556,457	537,737
Total loans receivable	562,381	544,688
Consumer and Other | Home Equity | Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	2,273	3,213
Consumer and Other | Home Equity | Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	1,082	735
Consumer and Other | Home Equity | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	115	428
Consumer and Other | Other Consumer
Loan portfolio aging analysis
Non-accrual loans	734	773
Total past due and non-accrual loans	3,032	3,763
Current loans receivable	280,391	282,624
Total loans receivable	283,423	286,387
Consumer and Other | Other Consumer | Accruing loans 30 to 59 days past due
Loan portfolio aging analysis
Past due loans	1,489	2,089
Consumer and Other | Other Consumer | Accruing loans 60 to 89 days past due
Loan portfolio aging analysis
Past due loans	703	591
Consumer and Other | Other Consumer | Accruing loans 90 days or more past due
Loan portfolio aging analysis
Past due loans	$ 106	$ 310

Impaired Loans (Details)

Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	$ 16,061	$ 19,197
Loans with a specific valuation allowance, Unpaid principal balance	16,061	19,491
Specific valuation allowance	702	3,223
Loans with a specific valuation allowance, Average balance	17,629	19,519
Loans without a specific valuation allowance, Recorded balance	88,350	89,591
Loans without a specific valuation allowance, Unpaid principal balance	105,100	107,486
Loans without a specific valuation allowance, Average balance	88,970	106,747
Recorded balance	104,411	108,788
Unpaid principal balance	121,161	126,977
Average balance	106,599	126,266
Residential Real Estate | Residential Real Estate
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	44	1,957
Loans with a specific valuation allowance, Unpaid principal balance	44	2,220
Specific valuation allowance	1	83
Loans with a specific valuation allowance, Average balance	1,001	2,686
Loans without a specific valuation allowance, Recorded balance	10,602	10,728
Loans without a specific valuation allowance, Unpaid principal balance	12,009	11,989
Loans without a specific valuation allowance, Average balance	10,665	10,269
Recorded balance	10,646	12,685
Unpaid principal balance	12,053	14,209
Average balance	11,666	12,955
Commercial | Commercial Real Estate
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	6,004	9,345
Loans with a specific valuation allowance, Unpaid principal balance	6,004	9,345
Specific valuation allowance	57	568
Loans with a specific valuation allowance, Average balance	7,674	8,498
Loans without a specific valuation allowance, Recorded balance	59,100	59,492
Loans without a specific valuation allowance, Unpaid principal balance	69,991	71,300
Loans without a specific valuation allowance, Average balance	59,296	73,889
Recorded balance	65,104	68,837
Unpaid principal balance	75,995	80,645
Average balance	66,970	82,387
Commercial | Other Commercial
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	10,004	7,268
Loans with a specific valuation allowance, Unpaid principal balance	10,004	7,268
Specific valuation allowance	642	2,313
Loans with a specific valuation allowance, Average balance	8,636	7,081
Loans without a specific valuation allowance, Recorded balance	12,950	13,707
Loans without a specific valuation allowance, Unpaid principal balance	16,516	17,689
Loans without a specific valuation allowance, Average balance	13,328	17,376
Recorded balance	22,954	20,975
Unpaid principal balance	26,520	24,957
Average balance	21,964	24,457
Consumer and Other | Home Equity
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	0	120
Loans with a specific valuation allowance, Unpaid principal balance	0	120
Specific valuation allowance	0	39
Loans with a specific valuation allowance, Average balance	60	82
Loans without a specific valuation allowance, Recorded balance	3,057	3,377
Loans without a specific valuation allowance, Unpaid principal balance	3,699	3,986
Loans without a specific valuation allowance, Average balance	3,217	3,465
Recorded balance	3,057	3,497
Unpaid principal balance	3,699	4,106
Average balance	3,277	3,547
Consumer and Other | Other Consumer
Summary of the impaired loans by portfolio class of loans
Loans with a specific valuation allowance, Recorded balance	9	507
Loans with a specific valuation allowance, Unpaid principal balance	9	538
Specific valuation allowance	2	220
Loans with a specific valuation allowance, Average balance	258	1,172
Loans without a specific valuation allowance, Recorded balance	2,641	2,287
Loans without a specific valuation allowance, Unpaid principal balance	2,885	2,522
Loans without a specific valuation allowance, Average balance	2,464	1,748
Recorded balance	2,650	2,794
Unpaid principal balance	2,894	3,060
Average balance	$ 2,722	$ 2,920

Troubled Debt Restructurings (D

Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)Loan	Mar. 31, 2018USD ($)Loan
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	4	12
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 1,705	$ 15,997
TDRs that Occurred During the Period, Post-modification recorded balance	$ 1,705	$ 15,997
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	1
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 334
Residential Real Estate | Residential Real Estate
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	0	2
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 0	$ 439
TDRs that Occurred During the Period, Post-modification recorded balance	$ 0	$ 439
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	1
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 334
Commercial | Commercial Real Estate
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	1	4
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 1,035	$ 8,278
TDRs that Occurred During the Period, Post-modification recorded balance	$ 1,035	$ 8,278
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	0
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 0
Commercial | Other Commercial
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	2	6
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 567	$ 7,280
TDRs that Occurred During the Period, Post-modification recorded balance	$ 567	$ 7,280
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	0
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 0
Consumer and Other | Home Equity
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	1	0
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 103	$ 0
TDRs that Occurred During the Period, Post-modification recorded balance	$ 103	$ 0
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	0
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 0
Consumer and Other | Other Consumer
Troubled Debt Restructurings
TDRs that Occurred During the Period, Number of Loans | Loan	0	0
TDRs that Occurred During the Period, Pre-modification recorded balance	$ 0	$ 0
TDRs that Occurred During the Period, Post-modification recorded balance	$ 0	$ 0
TDRs that Subsequently Defaulted, Number of Loans | Loan	0	0
TDRs that Subsequently Defaulted, Recorded Balance	$ 0	$ 0

Loans Receivable, Net (Details

Loans Receivable, Net (Details Textual)	3 Months Ended
	Mar. 31, 2019USD ($)portfolio_segment	Dec. 31, 2018USD ($)	Mar. 31, 2018USD ($)
Loans and Leases Receivable Disclosure
Number of segments in the Company's loan portfolio | portfolio_segment	3
TDR With Pre Modification Loan Balance for Which Oreo Was Received	$ 1,940,000		$ 431,000
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	1,134,000	$ 350,000
OREO Secured by Residential Real Estate	$ 2,076,000	$ 698,000

Lease Summary (Details)

Lease Summary (Details) $ in Thousands	Mar. 31, 2019USD ($)
Assets and Liabilities
Finance Lease, ROU assets	$ 951
Finance Lease, Accumulated depreciation	(832)
Finance Lease, Net ROU assets	119
Operating Lease, Net right-of-use assets	36,247
Finance Lease, Lease liabilities	163
Operating Lease, Lease liabilities	$ 38,389
Finance Lease, Weighted Average Remaining Lease Term	2 years
Operating Lease, Weighted Average Remaining Lease Term	19 years
Finance Lease, Weighted Average Discount Rate	5.30%
Operating Lease, Weighted Average Discount Rate	3.70%

Maturities of Lease Liabilities

Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019USD ($)
Finance Lease Liabilities, Rolling Maturity
Finance Lease, Maturing within one year	$ 92
Finance Lease, Maturing one year through two years	77
Finance Lease, Maturing two years through three years	1
Finance Lease, Maturing three years through four years	1
Finance Lease, Maturing four years through five years	0
Finance Lease, Thereafter	0
Finance Lease, Total Lease Payments	171
Finance Lease, Present Value of Lease Payments, Short-term	86
Finance Lease, Present Value of Lease Payments, Long-term	77
Finance Lease, Total present value of lease payments	163
Finance Lease, Difference between lease payments and present value of lease payments	8
Operating Lease Liabilities, Rolling Maturity
Operating Lease, Maturing within one year	3,286
Operating Lease, Maturing one year through two years	3,238
Operating Lease, Maturing two years through three years	3,032
Operating Lease, Maturing three years through four years	2,832
Operating Lease, Maturing four years through five years	2,716
Operating Lease, Thereafter	39,839
Operating Lease, Total Lease Payments	54,943
Operating Lease, Present Value of Lease Payments, Short-term	1,920
Operating Lease, Present Value of Lease Payments, Long-term	36,469
Operating Lease, Total present value of lease payments	38,389
Operating Lease, Difference between lease payments and present value of lease payments	$ 16,554

Components of Lease Expense (De

Components of Lease Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Finance lease cost
Amortization of ROU assets	$ 16
Interest on lease liabilities	2
Operating lease cost	913
Short-term lease cost	109
Variable lease cost	199
Sublease income	(2)
Total lease expense	$ 1,237

Supplemental Cash Flow Informat

Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Finance Lease, Operating cash flows	$ 2
Finance Lease, Financing cash flows	21
Operating Lease, Operating cash flows	$ 479

Goodwill Changes in the Carryin

Goodwill Changes in the Carrying Value of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Goodwill Roll Forward
Net carrying value at beginning of period	$ 289,586	$ 177,811
Acquisitions	0	111,724
Net carrying value at end of period	$ 289,586	$ 289,535

Goodwill (Details Textual)

Goodwill (Details Textual) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Accumulated impairment charge	$ 40,159,000	$ 40,159,000

Variable Interest Entities VIE

Variable Interest Entities VIE Carrying Amounts Included in Financial Statements (Details) - Consolidated VIEs - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Consolidated VIEs
Assets	$ 126,373	$ 125,998
Liabilities	14,701	14,653
Loans Receivable
Consolidated VIEs
Assets	80,466	80,123
Accrued Interest Receivable
Consolidated VIEs
Assets	99	96
Other assets
Consolidated VIEs
Assets	45,808	45,779
Other borrowed funds
Consolidated VIEs
Liabilities	14,575	14,527
Accrued interest payable
Consolidated VIEs
Liabilities	3	1
Other liabilities
Consolidated VIEs
Liabilities	$ 123	$ 125

Variable Interest Entities Amor

Variable Interest Entities Amortization Expense and Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Investments in Qualified Affordable Housing Projects
Amortization expense	$ 1,417	$ 891
Tax credits and other tax benefits recognized	$ 1,958	$ 1,240

Variable Interest Entities (Det

Variable Interest Entities (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Variable Interest Entities
Unfunded contingent commitments	$ 11,362,000
Impairment losses	0	$ 0
Other assets
Variable Interest Entities
Carrying value of equity investments in LIHTCs	$ 34,272,000		$ 35,112,000
CDE
Variable Interest Entities
Tax credit period	7 years
LIHTC
Variable Interest Entities
Tax credit period	10 years
Tax credit compliance period	15 years

Carrying Value of Repurchase Ag

Carrying Value of Repurchase Agreements (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	$ 489,620	$ 396,151
Overnight and Continuous
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	489,620	394,513
Up to 30 Days
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	0	1,638
U.S. government and federal agency
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	4,402
U.S. government and federal agency | Overnight and Continuous
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	4,402
U.S. government and federal agency | Up to 30 Days
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	0
Residential mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	397,077	328,174
Residential mortgage-backed securities | Overnight and Continuous
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	397,077	328,174
Residential mortgage-backed securities | Up to 30 Days
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	0	0
Commercial mortgage-backed securities
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	88,141	67,977
Commercial mortgage-backed securities | Overnight and Continuous
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	88,141	66,339
Commercial mortgage-backed securities | Up to 30 Days
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	$ 0	$ 1,638

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase (Details Textual) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements to Repurchase
Repurchase Agreements	$ 489,620,000	$ 396,151,000
Securities Pledged for Repurchase Agreements	$ 607,780,000	$ 511,294,000

Interest Rate Swap Summary (Det

Interest Rate Swap Summary (Details) $ in Thousands	Mar. 31, 2019USD ($)
Interest Rate Swap One
Derivative financial instruments
Forecasted Notional Amount	$ 160,000
Fixed Interest Rate	3.378%	[1]
Interest Rate Swap Two
Derivative financial instruments
Forecasted Notional Amount	$ 100,000
Fixed Interest Rate	2.498%	[1]
[1]	The Company pays the fixed interest rate and the counterparty pays the Company the variable interest rate.

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities Interest Rate Swap Gains or Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Pre-Tax Gains or Losses
Amount of (loss) gain recognized in OCI	$ (1,834)	$ 4,379
Interest Rate Swaps | Interest Expense
Pre-Tax Gains or Losses
Amount of loss reclassified from OCI to interest expense	(223)	(900)
Interest Rate Swaps | Other Comprehensive Income
Pre-Tax Gains or Losses
Amount of (loss) gain recognized in OCI	$ (1,834)	$ 4,379

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities Offsetting Assets (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Offsetting Derivative Assets
Gross Amounts of Recognized Assets	$ 0	$ 139
Gross Amounts Offset in the Statements of Financial Position	0	(139)
Net Amounts of Assets Presented in the Statements of Financial Position	$ 0	$ 0

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities Offsetting Liabilities (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Offsetting Derivative Liabilities
Gross Amounts of Recognized Liabilities	$ 5,380	$ 3,908
Gross Amounts Offset in the Statements of Financial Position	0	(139)
Net Amounts of Liabilities Presented in the Statements of Financial Position	$ 5,380	$ 3,769

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Interest Rate Lock Commitments
Derivative financial instruments
Off-balance Sheet Commitments	$ 82,604,000		$ 59,974,000
Interest Rate Swap One
Derivative financial instruments
Forecasted Notional Amount	160,000,000
Interest Rate Swap Two
Derivative financial instruments
Forecasted Notional Amount	100,000,000
Interest Rate Swaps
Derivative financial instruments
Interest expense recorded on interest rate swap	1,976,000	$ 1,976,000
Unrealized loss to be reclassified within twelve months	1,118,000
Investment securities pledged as collateral	6,402,000
Collateral pledged from the counterparties to the Company	0
Forward commitments to sell TBA securities
Derivative financial instruments
Forecasted Notional Amount	$ 52,500,000		$ 40,750,000

Other Expenses (Details)

Other Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Expenses
Debit card expenses	$ 1,869	$ 1,640
Consulting and outside services	1,767	1,379
Telephone	1,175	1,021
Employee expenses	996	791
Business development	890	468
Loan expenses	859	804
Postage	833	779
Printing and supplies	725	691
VIE amortization and other expenses	545	474
ATM expenses	494	289
Accounting and audit fees	453	418
Checking and operating expenses	362	113
Legal fees	307	314
Mergers and acquisition expenses	214	1,836
Other	778	1,144
Total other expenses	$ 12,267	$ 12,161

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Loss
Balance, beginning	$ (9,427)	$ (1,979)
Other comprehensive income (loss) before reclassification	33,312	(15,927)
Reclassification adjustments for (gains) losses included in net income	2	883
Total other comprehensive income (loss), net of tax	33,314	(15,044)
Balance, end	23,887	(17,023)
Available-For-Sale Debt Securities
Accumulated Other Comprehensive Loss
Balance, beginning	(6,613)	5,031
Other comprehensive income (loss) before reclassification	34,681	(19,196)
Reclassification adjustments for (gains) losses included in net income	(165)	211
Total other comprehensive income (loss), net of tax	34,516	(18,985)
Balance, end	27,903	(13,954)
Derivatives Used for Cash Flow Hedges
Accumulated Other Comprehensive Loss
Balance, beginning	(2,814)	(7,010)
Other comprehensive income (loss) before reclassification	(1,369)	3,269
Reclassification adjustments for (gains) losses included in net income	167	672
Total other comprehensive income (loss), net of tax	(1,202)	3,941
Balance, end	$ (4,016)	$ (3,069)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Basic and Diluted Earnings Per Share
Net income available to common stockholders, basic and diluted	$ 49,132	$ 38,559
Average outstanding shares - basic	84,549,974	80,808,904
Add: dilutive restricted stock awards and stock options	64,274	78,231
Average outstanding shares - diluted	84,614,248	80,887,135
Basic earnings per share	$ 0.58	$ 0.48
Diluted earnings per share	$ 0.58	$ 0.48
Earnings Per Share
Restricted stock awards and stock options excluded from the diluted average outstanding share calculation	41,593	0

Fair Value Measurements on a Re

Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial Assets
Debt securities, available-for-sale	$ 2,522,322	$ 2,571,663
Recurring Measurements
Financial Assets
Loans held for sale, at fair value	29,389	33,156
Total assets measured at fair value on a recurring basis	2,551,711	2,604,819
Financial Liabilities
Total liabilities measured at fair value on a recurring basis	5,380	3,769
Interest Rate Swaps | Recurring Measurements
Financial Liabilities
Derivatives	5,380	3,769
U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	21,521	23,649
U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	106,457	120,208
State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	725,191	852,250
Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	218,548	290,817
Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	825,048	792,915
Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	625,557	491,824
Level 1 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Financial Liabilities
Total liabilities measured at fair value on a recurring basis	0	0
Level 1 | Interest Rate Swaps | Recurring Measurements
Financial Liabilities
Derivatives	0	0
Level 1 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 1 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 2 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	29,389	33,156
Total assets measured at fair value on a recurring basis	2,551,711	2,604,819
Financial Liabilities
Total liabilities measured at fair value on a recurring basis	5,380	3,769
Level 2 | Interest Rate Swaps | Recurring Measurements
Financial Liabilities
Derivatives	5,380	3,769
Level 2 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	21,521	23,649
Level 2 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	106,457	120,208
Level 2 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	725,191	852,250
Level 2 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	218,548	290,817
Level 2 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	825,048	792,915
Level 2 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	625,557	491,824
Level 3 | Recurring Measurements
Financial Assets
Loans held for sale, at fair value	0	0
Total assets measured at fair value on a recurring basis	0	0
Financial Liabilities
Total liabilities measured at fair value on a recurring basis	0	0
Level 3 | Interest Rate Swaps | Recurring Measurements
Financial Liabilities
Derivatives	0	0
Level 3 | U.S. government and federal agency | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | U.S. government sponsored enterprises | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | State and local governments | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Corporate bonds | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Residential mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	0	0
Level 3 | Commercial mortgage-backed securities | Recurring Measurements
Financial Assets
Debt securities, available-for-sale	$ 0	$ 0

Fair Value Measurements on a No

Fair Value Measurements on a Non-Recurring Basis (Details) - Non-Recurring Measurements - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	$ 204	$ 1,011
Collateral-dependent impaired loans, net of ALLL	8	6,985
Total assets measured at fair value on a non-recurring basis	212	7,996
Level 1
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent impaired loans, net of ALLL	0	0
Total assets measured at fair value on a non-recurring basis	0	0
Level 2
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent impaired loans, net of ALLL	0	0
Total assets measured at fair value on a non-recurring basis	0	0
Level 3
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	204	1,011
Collateral-dependent impaired loans, net of ALLL	8	6,985
Total assets measured at fair value on a non-recurring basis	$ 212	$ 7,996

Quantitative Information about

Quantitative Information about Level 3 Fair Value Measurements (Details) - Non-Recurring Measurements $ in Thousands		Mar. 31, 2019USD ($)Input	Dec. 31, 2018USD ($)Input
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		$ 204	$ 1,011
Collateral-dependent impaired loans, net of ALLL | $		8	6,985
Level 3
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		204	1,011
Collateral-dependent impaired loans, net of ALLL | $		8	6,985
Level 3 | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned | $		204	1,011
Collateral-dependent impaired loans, net of ALLL | $		$ 8	2,384
Level 3 | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL | $			$ 4,601
Level 3 | Minimum Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.080	0.080
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.080
Level 3 | Minimum Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]		0.100
Level 3 | Maximum Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.150	0.150
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.200
Level 3 | Maximum Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]		0.100
Level 3 | Weighted Average Range | Sales Comparison Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Other real estate owned	[1]	0.106	0.092
Collateral-dependent impaired loans, net of ALLL	[1]	0.100	0.099
Level 3 | Weighted Average Range | Combined Approach | Selling costs
Quantitative Information About Level 3 Fair Value Measurements
Collateral-dependent impaired loans, net of ALLL	[1]		0.100
[1]	The range for selling cost inputs represents reductions to the fair value of the assets.

Carrying Amount and Estimated F

Carrying Amount and Estimated Fair Value of Financial Instruments Not Carried at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Carrying Amount
Financial assets
Cash and cash equivalents	$ 202,527	$ 203,790
Debt securities, held-to-maturity	255,572	297,915
Loans receivable, net of ALLL	8,196,284	8,156,310
Total financial assets	8,654,383	8,658,015
Financial liabilities
Term deposits	1,089,684	1,070,208
FHLB advances	154,683	440,175
Repurchase agreements and other borrowed funds	504,358	410,859
Subordinated debentures	134,048	134,051
Total financial liabilities	1,882,773	2,055,293
Estimated Fair Value | Level 1
Financial assets
Cash and cash equivalents	202,527	203,790
Debt securities, held-to-maturity	0	0
Loans receivable, net of ALLL	0	0
Total financial assets	202,527	203,790
Financial liabilities
Term deposits	0	0
FHLB advances	0	0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	0	0
Estimated Fair Value | Level 2
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	261,408	288,256
Loans receivable, net of ALLL	0	0
Total financial assets	261,408	288,256
Financial liabilities
Term deposits	1,089,785	1,069,777
FHLB advances	154,915	439,615
Repurchase agreements and other borrowed funds	504,358	410,859
Subordinated debentures	121,369	120,302
Total financial liabilities	1,870,427	2,040,553
Estimated Fair Value | Level 3
Financial assets
Cash and cash equivalents	0	0
Debt securities, held-to-maturity	0	0
Loans receivable, net of ALLL	8,148,954	8,079,112
Total financial assets	8,148,954	8,079,112
Financial liabilities
Term deposits	0	0
FHLB advances	0	0
Repurchase agreements and other borrowed funds	0	0
Subordinated debentures	0	0
Total financial liabilities	$ 0	$ 0

Fair Value Measurements (Detail

Fair Value Measurements (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair value measurement transfers from one level to another	$ 0	$ 0
Loans Held For Sale | Gain on sale of loans
Fair Value, Option, Quantitative Disclosures
Changes in fair value, gain (loss)	$ (1,000)	$ (108,000)

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Apr. 30, 2019	Apr. 03, 2019	Mar. 31, 2019	Dec. 31, 2018
Subsequent Event
Total assets			$ 12,073,779,000	$ 12,115,484,000
Gross loans			$ 8,326,070,000	$ 8,287,549,000
Subsequent Event
Subsequent Event
Subsequent Event, Description	On April 30, 2019, the Company acquired the outstanding common stock of FNB Bancorp and its wholly-owned subsidiary, The First National Bank of Layton, a community bank based in Layton, Utah.	On April 3, 2019, the Company announced the signing of a definitive agreement to acquire Heritage Bancorp and its wholly-owned subsidiary, Heritage Bank of Nevada, a community bank based in Reno, Nevada (collectively, “Heritage”).
Total assets		$ 840,769,000
Gross loans		589,458,000
Total deposits		$ 722,955,000