HomeStreet (HMST) 10-Q4 May 182018 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2018	May 02, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	HOMESTREET, INC.
Entity Central Index Key	1,518,715
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		26,976,811.6

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents (including interest-earning instruments of $19,792 and $30,268)	$ 66,289	$ 72,718
Investment securities (includes $836,200 and $846,268 carried at fair value)	915,483	904,304
Loans held for sale (includes $451,665 and $577,313 carried at fair value)	500,533	610,902
Loans held for investment (net of allowance for loan losses of $39,090 and $37,847; includes $5,304 and $5,477 carried at fair value)	4,758,261	4,506,466
Mortgage servicing rights (includes $294,062 and $258,560 carried at fair value)	320,105	284,653
Other real estate owned	297	664
Federal Home Loan Bank stock, at cost	41,923	46,639
Premises and equipment, net	104,508	104,654
Goodwill	22,564	22,564
Other assets	194,093	188,477
Total assets	6,924,056	6,742,041
Liabilities:
Deposits	5,048,996	4,760,952
Federal Home Loan Bank advances	851,657	979,201
Accounts payable and other liabilities	172,119	172,234
Federal funds purchased and securities sold under agreements to repurchase	25,000	0
Long-term debt	125,321	125,274
Total liabilities	6,223,093	6,037,661
Commitments and contingencies (Note 7)
Shareholders’ equity:
Preferred stock, no par value, authorized 10,000 shares, issued and outstanding, 0 shares and 0 shares	0	0
Common stock, no par value, authorized 160,000,000 shares, issued and outstanding, 26,972,074 shares and 26,888,288 shares	511	511
Additional paid-in capital	339,902	339,009
Retained earnings	377,848	371,982
Accumulated other comprehensive loss	(17,298)	(7,122)
Total shareholders' equity	700,963	704,380
Total liabilities and shareholders' equity	$ 6,924,056	$ 6,742,041

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Interest-earning instruments	$ 19,972	$ 30,268
Investment securities held at fair value (AFS)	836,200	846,268
Fair value of loans held for sale	451,665	577,313
Allowance for losses on loans held for investment	39,090	37,847
Fair value of loans held for investment	5,304	5,477
Fair value of single family MSR	$ 294,062	$ 258,560
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	26,972,074	26,888,288
Common stock, shares outstanding	26,972,074	26,888,288

Interim Consolidated Statements

Interim Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Loans	$ 55,936	$ 49,506
Investment securities	5,559	5,632
Other	179	136
Total interest income	61,674	55,274
Interest expense:
Deposits	7,788	5,623
Federal Home Loan Bank advances	3,636	2,401
Federal funds purchased and securities sold under agreements to repurchase	32	0
Long-term debt	1,584	1,479
Other	174	120
Total interest expense	13,214	9,623
Net interest income	48,460	45,651
Provision for credit losses	750	0
Net interest income after provision for credit losses	47,710	45,651
Noninterest income:
Net gain on loan origination and sale activities	48,319	60,281
Loan servicing income	7,574	9,239
(Loss) income from WMS Series LLC	(11)	185
Depositor and other retail banking fees	1,945	1,656
Insurance agency commissions	543	396
Gain on sale of investment securities available for sale	222	6
Other	2,239	2,698
Total noninterest income	60,831	74,461
Noninterest expense:
Salaries and related costs	66,691	71,308
General and administrative	14,584	17,128
Amortization of core deposit intangibles	406	514
Legal	730	160
Consulting	877	1,058
Federal Deposit Insurance Corporation assessments	929	824
Occupancy	8,180	8,209
Information services	8,465	7,648
Net (benefit) cost from operation and sale of other real estate owned	(93)	25
Total noninterest expense	100,769	106,874
Income before income taxes	7,772	13,238
Income tax expense	1,906	4,255
NET INCOME	$ 5,866	$ 8,983
Basic income per share (in dollars per share)	$ 0.22	$ 0.33
Diluted income per share (in dollars per share)	$ 0.22	$ 0.33
Basic weighted average number of shares outstanding (in shares)	26,927,464	26,821,396
Diluted weighted average number of shares outstanding (in shares)	27,159,000	27,057,449

Interim Consolidated Statement5

Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 5,866	$ 8,983
Unrealized gain (loss) on investment securities available for sale:
Unrealized holding (loss) gain arising during the period, net of tax (benefit) expense of ($2,658) and $1,039	(10,000)	1,930
Reclassification adjustment for net gains included in net income, net of tax expense (benefit) of $46 and $2	(176)	(4)
Other comprehensive (loss) income	(10,176)	1,926
Comprehensive income (loss)	$ (4,310)	$ 10,909

Interim Consolidated Statement6

Interim Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Tax expense (benefit) on unrealized holding gain (loss) on securities	$ (2,658)	$ 1,039
Tax expense (benefit) on reclassification adjustment for net gain on securities included in net income	$ 46	$ 2

Interim Consolidated Statement7

Interim Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2016	$ 629,284	$ 511	$ 336,149	$ 303,036	$ (10,412)
Common stock shares outstanding, beginning balance at Dec. 31, 2016		26,800,183
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,983			8,983
Share-based compensation expense	643		643
Common stock issued	83	$ 0	83
Common stock issued, shares		62,561
Other comprehensive income (loss)	1,926				1,926
Ending balance at Mar. 31, 2017	640,919	$ 511	336,875	312,019	(8,486)
Common stock shares outstanding, ending balance at Mar. 31, 2017		26,862,744
Beginning balance at Dec. 31, 2017	$ 704,380	$ 511	339,009	371,982	(7,122)
Common stock shares outstanding, beginning balance at Dec. 31, 2017	26,888,288	26,888,288
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 5,866			5,866
Share-based compensation expense	771		771
Common stock issued	122	$ 0	122
Common stock issued, shares		83,786
Other comprehensive income (loss)	(10,176)				(10,176)
Ending balance at Mar. 31, 2018	$ 700,963	$ 511	$ 339,902	$ 377,848	$ (17,298)
Common stock shares outstanding, ending balance at Mar. 31, 2018	26,972,074	26,972,074

Interim Consolidated Statement8

Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 5,866	$ 8,983
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation, amortization and accretion	6,051	4,807
Provision for credit losses	750	0
Net fair value adjustment and gain on sale of loans held for sale	(14,359)	(53,304)
Fair value adjustment of loans held for investment	124	(157)
Origination of mortgage servicing rights	(15,288)	(18,526)
Change in fair value of mortgage servicing rights	(21,148)	6,388
Net gain on sale of investment securities	(222)	(6)
Net gain on sale of loans originated as held for investment	0	(83)
Net fair value adjustment, gain on sale and provision for losses on other real estate owned	(92)	(55)
Loss on disposal of fixed assets	64	50
(Recovery) loss on lease abandonment	(266)	0
Net deferred income tax expense	1,906	7,624
Share-based compensation expense	882	720
Origination of loans held for sale	(1,450,347)	(1,640,341)
Proceeds from sale of loans originated as held for sale	1,606,661	1,867,783
Changes in operating assets and liabilities:
Increase in accounts receivable and other assets	(6,787)	(13,978)
Decrease in accounts payable and other liabilities	(6,539)	(21,905)
Net cash provided by operating activities	107,256	148,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of investment securities	(70,007)	(170,381)
Proceeds from sale of investment securities	16,875	2,386
Principal repayments and maturities of investment securities	27,383	26,644
Proceeds from sale of other real estate owned	459	708
Proceeds from sale of loans originated as held for investment	0	1,469
Mortgage servicing rights purchased from others	0	(354)
Capital expenditures related to other real estate owned	0	(57)
Origination of loans held for investment and principal repayments, net	(275,065)	(137,267)
Purchase of property and equipment	(3,579)	(22,397)
Net cash used in investing activities	(303,934)	(299,249)
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in deposits, net	288,026	166,158
Proceeds from Federal Home Loan Bank advances	2,613,400	1,804,600
Repayment of Federal Home Loan Bank advances	(2,740,900)	(1,810,600)
Proceeds from federal funds purchased and securities sold under agreements to repurchase	495,000	88,000
Repayment of federal funds purchased and securities sold under agreements to repurchase	(470,000)	(88,000)
Proceeds from Federal Home Loan Bank stock repurchase	44,307	43,033
Purchase of Federal Home Loan Bank stock	(39,591)	(44,342)
Proceeds from stock issuance, net	11	11
Payments from equity raise	0	(46)
Net cash provided by financing activities	190,253	158,814
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(6,425)	7,565
Cash, cash equivalents and restricted cash, beginning of year	73,909	56,364
Cash, cash equivalents and restricted cash, end of period	67,484	63,929
Less restricted cash included in other assets	(1,195)	(2,437)
CASH AND CASH EQUIVALENTS AT END OF PERIOD	66,289	61,492
Cash paid during the period for:
Interest paid	12,067	8,016
Federal and state income taxes refunded, net	(4)	(23,202)
Non-cash activities:
Loans held for investment foreclosed and transferred to other real estate owned	0	1,011
Loans transferred from held for investment to held for sale	36,626	2,871
Loans transferred from held for sale to held for investment	5,040	3,947
(Reduction in) Ginnie Mae loans recognized with the right to repurchase, net	$ 8,598	$ (572)

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: HomeStreet, Inc. and its wholly owned subsidiaries (the "Company") is a diversified financial services company serving customers primarily in the western United States, including Hawaii. The Company is principally engaged in commercial banking, mortgage banking, and consumer/retail banking activities. The Company's consolidated financial statements include the accounts of HomeStreet, Inc. and its wholly owned subsidiaries, HomeStreet Capital Corporation, HomeStreet Statutory Trusts and HomeStreet Bank (the "Bank"), and the Bank’s subsidiaries, HomeStreet/WMS, Inc., HomeStreet Reinsurance, Ltd., Continental Escrow Company, HomeStreet Foundation, HS Properties, Inc., HS Evergreen Corporate Center LLC, Union Street Holdings LLC, HS Cascadia Holdings LLC and YNB Real Estate LLC. HomeStreet Bank was formed in 1986 and is a state-chartered commercial bank. The Company’s accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (U.S. GAAP). Inter-company balances and transactions have been eliminated in consolidation. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting periods and related disclosures. These estimates that require application of management's most difficult, subjective or complex judgments often result in the need to make estimates about the effect of matters that are inherently uncertain and may change in future periods. Management has made significant estimates in several areas, including the fair value of assets acquired and liabilities assumed in business combinations, allowance for credit losses (Note 3, Loans and Credit Quality ), valuation of residential mortgage servicing rights and loans held for sale (Note 6, Mortgage Banking Operations ), valuation of certain loans held for investment (Note 3, Loans and Credit Quality ), valuation of investment securities (Note 2, Investment Securities ), and valuation of derivatives (Note 5, Derivatives and Hedging Activities ). We have reclassified certain prior period amounts to conform to the current period presentation. These reclassifications are immaterial and have no effect on net income, comprehensive income, cash flows, total assets or total shareholder's equity as previously reported. These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results of the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017, filed with the Securities and Exchange Commission ("2017 Annual Report on Form 10-K"). Recent Accounting Developments Tax Reform On December 22, 2017, new federal tax reform legislation was enacted in the United States ("2017 Tax Act"), resulting in significant changes from previous tax law. The new legislation reduced the federal corporate income tax rate to 21% from 35% and makes many other sweeping changes to the tax code, effective January 1, 2018. In the fourth quarter of 2017, we were required to revalue our deferred tax assets and liabilities at the new statutory rate upon enactment. As a result of this revaluation, in 2017, we recognized a one-time, non-cash $23.3 million tax benefit. In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, or ASU 2018-02. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The update does not have any impact on the underlying ASC 740 guidance that requires the effect of a change in tax law be included in income from continuing operations. The amendments in this update are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted and should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, or ASU 2017-12. This standard better aligns an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedge instruments and the hedged item in the financial statements. Adoption for this ASU is required for fiscal years and interim periods beginning after December 15, 2018 and early adoption is permitted. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and other Costs (Subtopic 320-20): Premium Amortization on Purchased Callable Debt Securities, or ASU 2017-08. This standard shortens the amortization period for the premium to the earliest call date to more closely align interest income recorded on bonds held at a premium or a discount with the economics of the underlying instrument. Adoption of ASU 2017-08 is required for fiscal years and interim periods within those fiscal years, beginning after December, 15, 2018, early adoption is permitted. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, or ASU 2017-04, which eliminates Step 2 from the goodwill impairment test. ASU 2017-04 also eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. Adoption of ASU 2017-04 is required for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019 with early adoption being permitted for annual or interim goodwill impairment tests performed on testing dates after January 1, 2017. The Company does not expect the adoption of ASU 2017-04 to have a material impact on its consolidated financial statements. Effective January 1, 2018, we adopted ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This standard will be applied prospectively and will impact how we assess acquisitions (or disposals) of assets or businesses. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, we adopted ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash: a Consensus of the FASB Emerging Issues Task Force.” This ASU requires a company’s cash flow statement to explain the changes during a reporting period of the totals for cash, cash equivalents, restricted cash, and restricted cash equivalents, including certain disclosures. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, we adopted ASU 2016-15, Statement of Cash Flows (Topic 230):, Classification of Certain Cash Receipts and Cash Payments . The amendments in this ASU were issued to reduce diversity in how certain cash receipts and payments are presented and classified in the statement of cash flows in eight specific areas. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements. In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delay recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendment affects loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial asset not excluded from the scope that has the contractual right to receive cash. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. The amendments in this ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is still evaluating the effects this ASU will have on the Company’s consolidated financial statements. The Company has formed an internal committee to oversee the project. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, 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 new guidance may result in an increase in the allowance for loan losses; however, management is still assessing the magnitude of the increase and its impact on the Company's consolidated financial statements. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. The Company has begun developing and implementing processes to address the amendments of this ASU. On February 25, 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The amendments in this ASU require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. This ASU simplifies the accounting for sale and leaseback transactions. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application was permitted upon issuance of the ASU. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. Management is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. While we have not quantified the impact to our balance sheet, upon the adoption of this ASU we expect to report increased assets and liabilities on our consolidated statement of financial condition as a result of recognizing right-of-use assets and lease liabilities related to these leases and certain equipment under non-cancelable operating lease agreements, which currently are not on our consolidated statement of financial condition. Effective January 1, 2018, we adopted ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. This ASU simplifies the impairment assessment of equity investments without readily determinable fair values. This ASU also eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the consolidated statement of financial position. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the consolidated statement of financial position or in the accompanying notes to the financial statements. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, the company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606)

Investment Securities

Investment Securities	3 Months Ended
Investment Securities	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES	INVESTMENT SECURITIES: The following table sets forth certain information regarding the amortized cost and fair values of our investment securities available for sale and held to maturity. At March 31, 2018 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 126,626 $ — $ (5,270 ) $ 121,356 Commercial 32,022 22 (638 ) 31,406 Municipal bonds 382,216 1,030 (8,606 ) 374,640 Collateralized mortgage obligations: Residential 175,748 — (6,377 ) 169,371 Commercial 99,897 9 (2,179 ) 97,727 Corporate debt securities 22,740 2 (981 ) 21,761 U.S. Treasury securities 10,904 — (415 ) 10,489 Agency debentures 9,865 — (415 ) 9,450 $ 860,018 $ 1,063 $ (24,881 ) $ 836,200 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,012 $ — $ (258 ) $ 11,754 Commercial 21,875 14 (495 ) 21,394 Collateralized mortgage obligations 17,805 50 (49 ) 17,806 Municipal bonds 27,495 179 (455 ) 27,219 Corporate debt securities 96 — — 96 $ 79,283 $ 243 $ (1,257 ) $ 78,269 At December 31, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 133,654 $ 4 $ (3,568 ) $ 130,090 Commercial 24,024 8 (338 ) 23,694 Municipal bonds 389,117 2,978 (3,643 ) 388,452 Collateralized mortgage obligations: Residential 164,502 3 (4,081 ) 160,424 Commercial 100,001 9 (1,441 ) 98,569 Corporate debt securities 25,146 67 (476 ) 24,737 U.S. Treasury securities 10,899 — (247 ) 10,652 Agency debentures 9,861 — (211 ) 9,650 $ 857,204 $ 3,069 $ (14,005 ) $ 846,268 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,062 $ 35 $ (99 ) $ 11,998 Commercial 21,015 75 (161 ) 20,929 Collateralized mortgage obligations 3,439 — — 3,439 Municipal bonds 21,423 339 (97 ) 21,665 Corporate debt securities 97 — — 97 $ 58,036 $ 449 $ (357 ) $ 58,128 Mortgage-backed securities ("MBS") and collateralized mortgage obligations ("CMO") represent securities issued by government sponsored enterprises ("GSEs"). Each of the MBS and CMO securities in our investment portfolio are guaranteed by Fannie Mae, Ginnie Mae or Freddie Mac. Municipal bonds are comprised of general obligation bonds (i.e., backed by the general credit of the issuer) and revenue bonds (i.e., backed by revenues from the specific project being financed) issued by various municipal corporations. As of March 31, 2018 and December 31, 2017 , all securities held, including municipal bonds and corporate debt securities, were rated investment grade based upon external ratings where available and, where not available, based upon internal ratings which correspond to ratings as defined by Standard and Poor’s Rating Services (“S&P”) or Moody’s Investors Services (“Moody’s”). As of March 31, 2018 and December 31, 2017 , substantially all securities held had ratings available by external ratings agencies. Investment securities available for sale and held to maturity that were in an unrealized loss position are presented in the following tables based on the length of time the individual securities have been in an unrealized loss position. At March 31, 2018 Less than 12 months 12 months or more Total (in thousands) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (366 ) $ 17,848 $ (4,904 ) $ 103,082 $ (5,270 ) $ 120,930 Commercial (326 ) 15,693 (312 ) 6,603 (638 ) 22,296 Municipal bonds (3,300 ) 186,208 (5,306 ) 128,141 (8,606 ) 314,349 Collateralized mortgage obligations: Residential (1,303 ) 62,441 (5,074 ) 106,930 (6,377 ) 169,371 Commercial (1,040 ) 57,850 (1,139 ) 34,368 (2,179 ) 92,218 Corporate debt securities (152 ) 8,766 (829 ) 12,765 (981 ) 21,531 U.S. Treasury securities (3 ) 997 (411 ) 9,492 (414 ) 10,489 Agency debentures (415 ) 9,450 — — (415 ) 9,450 $ (6,905 ) $ 359,253 $ (17,975 ) $ 401,381 $ (24,880 ) $ 760,634 HELD TO MATURITY Mortgage-backed securities: Residential $ (73 ) $ 5,347 $ (186 ) $ 4,338 $ (259 ) $ 9,685 Commercial (495 ) 18,385 — — (495 ) 18,385 Collateralized mortgage obligations (49 ) 9,351 — — (49 ) 9,351 Municipal bonds (192 ) 10,500 (263 ) 9,237 (455 ) 19,737 $ (809 ) $ 43,583 $ (449 ) $ 13,575 $ (1,258 ) $ 57,158 At December 31, 2017 Less than 12 months 12 months or more Total (in thousands) Gross Fair Gross Fair Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (182 ) $ 18,020 $ (3,386 ) $ 110,878 $ (3,568 ) $ 128,898 Commercial (113 ) 15,265 (225 ) 6,748 (338 ) 22,013 Municipal bonds (760 ) 105,415 (2,883 ) 134,103 (3,643 ) 239,518 Collateralized mortgage obligations: Residential (612 ) 53,721 (3,469 ) 104,555 (4,081 ) 158,276 Commercial (538 ) 57,236 (903 ) 35,225 (1,441 ) 92,461 Corporate debt securities (15 ) 5,272 (461 ) 13,365 (476 ) 18,637 U.S. Treasury securities (3 ) 997 (244 ) 9,655 (247 ) 10,652 Agency debentures (211 ) 9,650 $ — — (211 ) 9,650 $ (2,434 ) $ 265,576 $ (11,571 ) $ 414,529 $ (14,005 ) $ 680,105 HELD TO MATURITY Mortgage-backed securities: Residential $ (13 ) $ 2,662 $ (86 ) $ 4,452 $ (99 ) $ 7,114 Commercial (161 ) 15,900 — — (161 ) 15,900 Collateralized mortgage obligations — 3,439 — — — 3,439 Municipal bonds (3 ) 2,185 (94 ) 9,465 (97 ) 11,650 $ (177 ) $ 24,186 $ (180 ) $ 13,917 $ (357 ) $ 38,103 The Company has evaluated securities available for sale that are in an unrealized loss position and has determined that the decline in value is temporary and is related to the change in market interest rates since purchase. The decline in value is not related to any issuer- or industry-specific credit event. The Company has not identified any expected credit losses on its debt securities as of March 31, 2018 and December 31, 2017 . In addition, as of March 31, 2018 and December 31, 2017 , the Company had not made a decision to sell any of its debt securities held, nor did the Company consider it more likely than not that it would be required to sell such securities before recovery of their amortized cost basis. The following tables present the fair value of investment securities available for sale and held to maturity by contractual maturity along with the associated contractual yield for the periods indicated below. Contractual maturities for mortgage-backed securities and collateralized mortgage obligations as presented exclude the effect of expected prepayments. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations before the underlying mortgages mature. The weighted-average yield is computed using the contractual coupon of each security weighted based on the fair value of each security and does not include adjustments to a tax equivalent basis. At March 31, 2018 Within one year After one year through five years After five years through ten years After ten years Total (dollars in thousands) Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield AVAILABLE FOR SALE Mortgage-backed securities: Residential $ — — % $ — — % $ 8,420 1.62 % $ 112,936 2.03 % $ 121,356 2.00 % Commercial — — 14,158 2.08 13,569 2.69 3,679 2.92 31,406 2.44 Municipal bonds 635 2.29 15,948 2.25 34,883 2.71 323,174 3.25 374,640 3.15 Collateralized mortgage obligations: Residential — — — — — — 169,371 2.23 169,371 2.23 Commercial — — 12,303 2.18 20,549 2.46 64,875 2.18 97,727 2.24 Agency debentures — — — — 9,450 2.21 — — 9,450 2.21 Corporate debt securities 1,032 2.10 4,189 3.02 11,738 3.36 4,802 3.52 21,761 3.28 U.S. Treasury securities 997 1.22 — — 9,492 1.73 — — 10,489 1.69 Total available for sale $ 2,664 1.82 % $ 46,598 2.25 % $ 108,101 2.52 % $ 678,837 2.68 % $ 836,200 2.64 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 11,754 2.96 % $ 11,754 2.96 % Commercial — — 11,612 2.21 9,782 2.82 — — 21,394 2.49 Collateralized mortgage obligations — — 9,351 3.30 — — 8,455 2.53 17,806 2.93 Municipal bonds — — 1,812 2.84 4,493 2.16 20,914 3.19 27,219 3.00 Corporate debt securities — — — — — — 96 6.00 96 6.00 Total held to maturity $ — — % $ 22,775 2.70 % $ 14,275 2.61 % $ 41,219 3.00 % $ 78,269 2.84 % At December 31, 2017 Within one year After one year through five years After five years through ten years After ten years Total (dollars in thousands) Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield AVAILABLE FOR SALE Mortgage-backed securities: Residential $ — — % $ — — % $ 8,914 1.63 % $ 121,176 1.97 % $ 130,090 1.94 % Commercial — — 15,356 2.07 4,558 2.03 3,780 2.98 23,694 2.21 Municipal bonds 641 2.64 24,456 3.10 39,883 3.25 323,472 3.81 388,452 3.71 Collateralized mortgage obligations: Residential — — — — — — 160,424 2.10 160,424 2.10 Commercial — — 12,550 2.09 21,837 2.38 64,182 2.13 98,569 2.18 Agency debentures — — — — 9,650 2.26 — — 9,650 2.26 Corporate debt securities 1,048 2.11 6,527 2.80 11,033 3.49 6,129 3.57 24,737 3.27 U.S. Treasury securities 997 1.22 — — 9,655 1.76 — — 10,652 1.71 Total available for sale $ 2,686 1.90 % $ 58,889 2.58 % $ 105,530 2.67 % $ 679,163 2.90 % $ 846,268 2.85 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 11,998 2.93 % $ 11,998 2.93 % Commercial — — 6,577 2.15 14,352 2.71 — — 20,929 2.53 Collateralized mortgage obligations — — — — — — 3,439 1.90 3,439 1.90 Municipal bonds — — 1,846 3.35 4,630 2.57 15,189 3.50 21,665 3.28 Corporate debt securities — — — — — — 97 6.00 97 6.00 Total held to maturity $ — — % $ 8,423 2.41 % $ 18,982 2.68 % $ 30,723 3.10 % $ 58,128 2.86 % Sales of investment securities available for sale were as follows. Three Months Ended March 31, (in thousands) 2018 2017 Proceeds $ 16,875 $ 2,386 Gross gains 223 25 Gross losses (1 ) (19 ) The following table summarizes the carrying value of securities pledged as collateral to secure borrowings, public deposits and other purposes as permitted or required by law: (in thousands) At March 31, At December 31, Federal Home Loan Bank to secure borrowings $ 62,282 $ 425,866 Washington and California State to secure public deposits 115,739 118,828 Securities pledged to secure derivatives in a liability position 9,455 7,308 Other securities pledged 5,679 6,089 Total securities pledged as collateral $ 193,155 $ 558,091 The Company assesses the creditworthiness of the counterparties that hold the pledged collateral and has determined that these arrangements have little risk. There were no securities pledged under repurchase agreements at March 31, 2018 and December 31, 2017 . Tax-exempt interest income on securities totaling $2.3 million and $2.4 million for the three months ended March 31, 2018 and 2017

Loans and Credit Quality

Loans and Credit Quality	3 Months Ended
Loans and Credit Quality	Mar. 31, 2018
Receivables [Abstract]
LOANS AND CREDIT QUALITY	LOANS AND CREDIT QUALITY: For a detailed discussion of loans and credit quality, including accounting policies and the methodology used to estimate the allowance for credit losses, see Note 1, Summary of Significant Accounting Policies, and Note 5 , Loans and Credit Quality, within our 2017 Annual Report on Form 10-K. The Company's portfolio of loans held for investment is divided into two portfolio segments, consumer loans and commercial loans, which are the same segments used to determine the allowance for loan losses. Within each portfolio segment, the Company monitors and assesses credit risk based on the risk characteristics of each of the following loan classes: single family and home equity and other loans within the consumer loan portfolio segment and non-owner occupied commercial real estate, multifamily, construction/land development and owner occupied commercial real estate and commercial business loans within the commercial loan portfolio segment. Loans held for investment consist of the following: (in thousands) At March 31, At December 31, Consumer loans Single family (1) $ 1,444,193 $ 1,381,366 Home equity and other 470,273 453,489 Total consumer loans 1,914,466 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 633,719 622,782 Multifamily 811,892 728,037 Construction/land development 739,248 687,631 Total commercial real estate loans 2,184,859 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 393,845 391,613 Commercial business 287,367 264,709 Total commercial and industrial loans 681,212 656,322 Loans held for investment before deferred fees, costs and allowance 4,780,537 4,529,627 Net deferred loan fees and costs 16,814 14,686 4,797,351 4,544,313 Allowance for loan losses (39,090 ) (37,847 ) Total loans held for investment $ 4,758,261 $ 4,506,466 (1) Includes $5.3 million and $5.5 million at March 31, 2018 and December 31, 2017 , respectively, of loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations. Loans in the amount of $1.74 billion and $1.81 billion at March 31, 2018 and December 31, 2017 , respectively, were pledged to secure borrowings from the FHLB as part of our liquidity management strategy. Additionally, loans totaling $672.8 million and $663.8 million at March 31, 2018 and December 31, 2017 , respectively, were pledged to secure borrowings from the Federal Reserve Bank. The FHLB and Federal Reserve Bank do not have the right to sell or re-pledge these loans. Credit Risk Concentrations Concentrations of credit risk arise when a number of customers are engaged in similar business activities or activities in the same geographic region, or when they have similar economic features that would cause their ability to meet contractual obligations to be similarly affected by changes in economic conditions. Loans held for investment are primarily secured by real estate located in the Pacific Northwest, California and Hawaii. At March 31, 2018 , we had concentrations representing 10% or more of the total portfolio by state and property type for the single family loan class within the states of Washington and California, which represented 14.7% and 11.1% of the total portfolio, respectively. At December 31, 2017 , we had concentrations representing 10% or more of the total portfolio by state and property type for the single family loan class within the states of Washington and California, which represented 15.0% and 10.9% of the total portfolio, respectively. Credit Quality Management considers the level of allowance for loan losses to be appropriate to cover credit losses inherent within the loans held for investment portfolio as of March 31, 2018 . In addition to the allowance for loan losses, the Company maintains a separate allowance for losses related to unfunded loan commitments, and this amount is included in accounts payable and other liabilities on our consolidated statements of financial condition. Collectively, these allowances are referred to as the allowance for credit losses. For further information on the policies that govern the determination of the allowance for loan losses levels, see Note 1, Summary of Significant Accounting Policies, within our 2017 Annual Report on Form 10-K. Activity in the allowance for credit losses was as follows. Three Months Ended March 31, (in thousands) 2018 2017 Allowance for credit losses (roll-forward): Beginning balance $ 39,116 $ 35,264 Provision for credit losses 750 — Recoveries, net of charge-offs 580 778 Ending balance $ 40,446 $ 36,042 Components: Allowance for loan losses $ 39,090 $ 34,735 Allowance for unfunded commitments 1,356 1,307 Allowance for credit losses $ 40,446 $ 36,042 Activity in the allowance for credit losses by loan portfolio and loan class was as follows. Three Months Ended March 31, 2018 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 9,412 $ — $ 280 $ (484 ) $ 9,208 Home equity and other 7,081 (97 ) 76 (73 ) 6,987 Total consumer loans 16,493 (97 ) 356 (557 ) 16,195 Commercial real estate loans Non-owner occupied commercial real estate 4,755 — — (128 ) 4,627 Multifamily 3,895 — — 756 4,651 Construction/land development 8,677 — 171 311 9,159 Total commercial real estate loans 17,327 — 171 939 18,437 Commercial and industrial loans Owner occupied commercial real estate 2,960 — — 6 2,966 Commercial business 2,336 (1 ) 151 362 2,848 Total commercial and industrial loans 5,296 (1 ) 151 368 5,814 Total allowance for credit losses $ 39,116 $ (98 ) $ 678 $ 750 $ 40,446 Three Months Ended March 31, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,196 $ — $ 333 $ (575 ) $ 7,954 Home equity and other 6,153 (325 ) 286 432 6,546 Total consumer loans 14,349 (325 ) 619 (143 ) 14,500 Commercial real estate loans Non-owner occupied commercial real estate 4,481 — — 218 4,699 Multifamily 3,086 — — 707 3,793 Construction/land development 8,553 — 220 (704 ) 8,069 Total commercial real estate loans 16,120 — 220 221 16,561 Commercial and industrial loans Owner occupied commercial real estate 2,199 — — 138 2,337 Commercial business 2,596 — 264 (216 ) 2,644 Total commercial and industrial loans 4,795 — 264 (78 ) 4,981 Total allowance for credit losses $ 35,264 $ (325 ) $ 1,103 $ — $ 36,042 The following tables disaggregate our allowance for credit losses and recorded investment in loans by impairment methodology. At March 31, 2018 (in thousands) Allowance: collectively evaluated for impairment Allowance: individually evaluated for impairment Total Loans: collectively evaluated for impairment Loans: individually evaluated for impairment Total Consumer loans Single family $ 9,083 $ 125 $ 9,208 $ 1,370,077 $ 68,828 $ 1,438,905 Home equity and other 6,941 46 6,987 468,990 1,267 470,257 Total consumer loans 16,024 171 16,195 1,839,067 70,095 1,909,162 Commercial loans Non-owner occupied commercial real estate 4,627 — 4,627 633,719 — 633,719 Multifamily 4,651 — 4,651 811,093 799 811,892 Construction/land development 9,159 — 9,159 738,658 590 739,248 Total commercial real estate loans 18,437 — 18,437 2,183,470 1,389 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 2,966 — 2,966 390,991 2,854 393,845 Commercial business 2,710 138 2,848 284,582 2,785 287,367 Total commercial and industrial loans 5,676 138 5,814 675,573 5,639 681,212 Total loans evaluated for impairment 40,137 309 40,446 4,698,110 77,123 4,775,233 Loans held for investment carried at fair value — — — — — 5,304 (1) Total loans held for investment $ 40,137 $ 309 $ 40,446 $ 4,698,110 $ 77,123 $ 4,780,537 At December 31, 2017 (in thousands) Allowance: collectively evaluated for impairment Allowance: individually evaluated for impairment Total Loans: collectively evaluated for impairment Loans: individually evaluated for impairment Total Consumer loans Single family $ 9,188 $ 224 $ 9,412 $ 1,300,939 $ 74,967 $ 1,375,906 Home equity and other 7,036 45 7,081 452,182 1,290 453,472 Total consumer loans 16,224 269 16,493 1,753,121 76,257 1,829,378 Commercial real estate loans Non-owner occupied commercial real estate 4,755 — 4,755 622,782 — 622,782 Multifamily 3,895 — 3,895 727,228 809 728,037 Construction/land development 8,677 — 8,677 687,177 454 687,631 Total commercial real estate loans 17,327 — 17,327 2,037,187 1,263 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 2,960 — 2,960 388,624 2,989 391,613 Commercial business 2,316 20 2,336 261,603 3,106 264,709 Total commercial and industrial loans 5,276 20 5,296 650,227 6,095 656,322 Total loans evaluated for impairment 38,827 289 39,116 4,440,535 83,615 4,524,150 Loans held for investment carried at fair value — — — 5,246 231 5,477 (1) Total loans held for investment $ 38,827 $ 289 $ 39,116 $ 4,445,781 $ 83,846 $ 4,529,627 (1) Comprised of single family loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations. Impaired Loans The following tables present impaired loans by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 66,257 $ 67,085 $ — Home equity and other 763 788 — Total consumer loans 67,020 67,873 — Commercial real estate loans Multifamily 799 831 — Construction/land development 590 590 — Total commercial real estate loans 1,389 1,421 — Commercial and industrial loans Owner occupied commercial real estate 2,854 3,165 — Commercial business 1,875 2,560 — Total commercial and industrial loans 4,729 5,725 — $ 73,138 $ 75,019 $ — With an allowance recorded: Consumer loans Single family $ 2,571 $ 2,629 $ 125 Home equity and other 504 504 46 Total consumer loans 3,075 3,133 171 Commercial and industrial loans Commercial business 910 1,332 138 Total commercial and industrial loans 910 1,332 138 $ 3,985 $ 4,465 $ 309 Total: Consumer loans Single family (3) $ 68,828 $ 69,714 $ 125 Home equity and other 1,267 1,292 46 Total consumer loans 70,095 71,006 171 Commercial real estate loans Multifamily 799 831 — Construction/land development 590 590 — Total commercial and industrial loans 1,389 1,421 — Commercial and industrial loans Owner occupied commercial real estate 2,854 3,165 — Commercial business 2,785 3,892 138 Total commercial and industrial loans 5,639 7,057 138 Total impaired loans $ 77,123 $ 79,484 $ 309 (1) Includes partial charge-offs and nonaccrual interest paid and purchase discounts and premiums. (2) Unpaid principal balance does not include partial charge-offs, purchase discounts and premiums or nonaccrual interest paid. Related allowance is calculated on net book balances not unpaid principal balances. (3) Includes $66.3 million in single family performing trouble debt restructurings ("TDRs"). At December 31, 2017 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 71,264 (4 ) $ 72,424 $ — Home equity and other 782 807 — Total consumer loans 72,046 73,231 — Commercial real estate loans Multifamily 809 837 — Construction/land development 454 454 — Total commercial real estate loans 1,263 1,291 — Commercial and industrial loans Owner occupied commercial real estate 2,989 3,288 — Commercial business 2,398 3,094 — Total commercial and industrial loans 5,387 6,382 — $ 78,696 $ 80,904 $ — With an allowance recorded: Consumer loans Single family $ 3,934 $ 4,025 $ 224 Home equity and other 508 508 45 Total consumer loans 4,442 4,533 269 Commercial and industrial loans Commercial business 708 755 20 Total commercial and industrial loans 708 755 20 $ 5,150 $ 5,288 $ 289 Total: Consumer loans Single family (3) $ 75,198 $ 76,449 $ 224 Home equity and other 1,290 1,315 45 Total consumer loans 76,488 77,764 269 Commercial real estate loans Multifamily 809 837 — Construction/land development 454 454 — Total commercial real estate loans 1,263 1,291 — Commercial and industrial loans Owner occupied commercial real estate 2,989 3,288 — Commercial business 3,106 3,849 20 Total commercial and industrial loans 6,095 7,137 20 Total impaired loans $ 83,846 $ 86,192 $ 289 (1) Includes partial charge-offs and nonaccrual interest paid and purchase discounts and premiums. (2) Unpaid principal balance does not include partial charge-offs, purchase discounts and premiums or nonaccrual interest paid. Related allowance is calculated on net book balances not unpaid principal balances. (3) Includes $69.6 million in single family performing TDRs. (4) Includes $231 thousand of fair value option loans. The following tables provide the average recorded investment and interest income recognized on impaired loans by portfolio segment and class. Three Months Ended March 31, 2018 Three Months Ended March 31, 2017 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Consumer loans Single family $ 72,013 $ 653 $ 82,007 $ 750 Home equity and other 1,279 19 1,449 19 Total consumer loans 73,292 672 83,456 769 Commercial real estate loans Non-owner occupied commercial real estate — — 1,225 — Multifamily 804 6 841 6 Construction/land development 522 5 1,540 26 Total commercial real estate loans 1,326 11 3,606 32 Commercial and industrial loans Owner occupied commercial real estate 2,921 36 2,707 59 Commercial business 2,945 37 3,113 47 Total commercial and industrial loans 5,866 73 5,820 106 $ 80,484 $ 756 $ 92,882 $ 907 Credit Quality Indicators Management regularly reviews loans in the portfolio to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company's risk rating methodology assigns risk ratings ranging from 1 to 10, where a higher rating represents higher risk. The Company differentiates its lending portfolios into homogeneous loans and non-homogeneous loans. The 10 risk rating categories can be generally described by the following groupings for non-homogeneous loans: Pass. We have five pass risk ratings which represent a level of credit quality that ranges from no well-defined deficiency or weakness to some noted weakness, however the risk of default on any loan classified as pass is expected to be remote. The five pass risk ratings are described below: Minimal Risk . A minimal risk loan, risk rated 1-Exceptional, is to a borrower of the highest quality. The borrower has an unquestioned ability to produce consistent profits and service all obligations and can absorb severe market disturbances with little or no difficulty. Low Risk. A low risk loan, risk rated 2-Superior, is similar in characteristics to a minimal risk loan. Balance sheet and operations are slightly more prone to fluctuations within the business cycle; however, debt capacity and debt service coverage remains strong. The borrower will have a strong demonstrated ability to produce profits and absorb market disturbances. Modest Risk. A modest risk loan, risk rated 3-Excellent, is a desirable loan with excellent sources of repayment and no currently identifiable risk associated with collection. The borrower exhibits a very strong capacity to repay the loan in accordance with the repayment agreement. The borrower may be susceptible to economic cycles, but will have cash reserves to weather these cycles. Average Risk. An average risk loan, risk rated 4-Good, is an attractive loan with sound sources of repayment and no material collection or repayment weakness evident. The borrower has an acceptable capacity to pay in accordance with the agreement. The borrower is susceptible to economic cycles and more efficient competition, but should have modest reserves sufficient to survive all but the most severe downturns or major setbacks. Acceptable Risk. An acceptable risk loan, risk rated 5-Acceptable, is a loan with lower than average, but still acceptable credit risk. These borrowers may have higher leverage, less certain but viable repayment sources, have limited financial reserves and may possess weaknesses that can be adequately mitigated through collateral, structural or credit enhancement. The borrower is susceptible to economic cycles and is less resilient to negative market forces or financial events. Reserves may be insufficient to survive a modest downturn. Watch. A watch loan, risk rated 6-Watch, is still pass-rated, but represents the lowest level of acceptable risk due to an emerging risk element or declining performance trend. Watch ratings are expected to be temporary, with issues resolved or manifested to the extent that a higher or lower rating would be appropriate. The borrower should have a plausible plan, with reasonable certainty of success, to correct the problems in a short period of time. Borrowers rated watch are characterized by elements of uncertainty, such as: • The borrower may be experiencing declining operating trends, strained cash flows or less-than anticipated performance. Cash flow should still be adequate to cover debt service, and the negative trends should be identified as being of a short-term or temporary nature. • The borrower may have experienced a minor, unexpected covenant violation. • Companies who may be experiencing tight working capital or have a cash cushion deficiency. • A loan may also be a watch if financial information is late, there is a documentation deficiency, the borrower has experienced unexpected management turnover, or if they face industry issues that, when combined with performance factors create uncertainty in their future ability to perform. • Delinquent payments, increasing and material overdraft activity, request for bulge and/or out- of-formula advances may be an indicator of inadequate working capital and may suggest a lower rating. • Failure of the intended repayment source to materialize as expected, or renewal of a loan (other than cash/marketable security secured or lines of credit) without reduction are possible indicators of a watch or worse risk rating. Special Mention. A special mention loan, risk rated 7-Special Mention, has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loans or the institutions credit position at some future date. They contain unfavorable characteristics and are generally undesirable. Loans in this category are currently protected but are potentially weak and constitute an undue and unwarranted credit risk, but not to the point of a substandard classification. A special mention loan has potential weaknesses, which if not checked or corrected, weaken the loan or inadequately protect the Company’s position at some future date. Such weaknesses include: • Performance is poor or significantly less than expected. There may be a temporary debt-servicing deficiency or inadequate working capital as evidenced by a cash cushion deficiency, but not to the extent that repayment is compromised. Material violation of financial covenants is common. • Loans with unresolved material issues that significantly cloud the debt service outlook, even though a debt servicing deficiency does not currently exist. • Modest underperformance or deviation from plan for real estate loans where absorption of rental/sales units is necessary to properly service the debt as structured. Depth of support for interest carry provided by owner/guarantors may mitigate and provide for improved rating. • This rating may be assigned when a loan officer is unable to supervise the credit properly, or when there is an inadequate loan agreement, an inability to control collateral, failure to obtain proper documentation, or any other deviation from prudent lending practices. • Unlike a substandard credit, there should be a reasonable expectation that these temporary issues will be corrected within the normal course of business, rather than liquidation of assets, and in a reasonable period of time. Substandard. A substandard loan, risk rated 8-Substandard, is inadequately protected by the current sound worth and paying capacity of the borrower or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the loan. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard loans, does not have to exist in individual loans classified substandard. Loans are classified as substandard when they have unsatisfactory characteristics causing unacceptable levels of risk. A substandard loan normally has one or more well-defined weaknesses that could jeopardize repayment of the loan. The likely need to liquidate assets to correct the problem, rather than repayment from successful operations, is the key distinction between special mention and substandard. The following are examples of well-defined weaknesses: • Cash flow deficiencies or trends are of a magnitude to jeopardize current and future payments with no immediate relief. A loss is not presently expected, however the outlook is sufficiently uncertain to preclude ruling out the possibility. • The borrower has been unable to adjust to prolonged and unfavorable industry or economic trends. • Material underperformance or deviation from plan for real estate loans where absorption of rental/sales units is necessary to properly service the debt and risk is not mitigated by willingness and capacity of owner/guarantor to support interest payments. • Management character or honesty has become suspect. This includes instances where the borrower has become uncooperative. • Due to unprofitable or unsuccessful business operations, some form of restructuring of the business, including liquidation of assets, has become the primary source of loan repayment. Cash flow has deteriorated, or been diverted, to the point that sale of collateral is now the Company’s primary source of repayment (unless this was the original source of repayment). If the collateral is under the Company’s control and is cash or other liquid, highly marketable securities and properly margined, then a more appropriate rating might be special mention or watch. • The borrower is involved in bankruptcy proceedings where collateral liquidation values are expected to fully protect the Company against loss. • There is material, uncorrectable faulty documentation or materially suspect financial information. Doubtful. Loans classified as doubtful, risk rated 9-Doubtful, have all the weaknesses inherent in one classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonably specific pending factors, which may work towards strengthening of the loan, classification as a loss (and immediate charge-off) is deferred until more exact status may be determined. Pending factors include proposed merger, acquisition, liquidation procedures, capital injection, and perfection of liens on additional collateral and refinancing plans. In certain circumstances, a doubtful rating will be temporary, while the Company is awaiting an updated collateral valuation. In these cases, once the collateral is valued and appropriate margin applied, the remaining un-collateralized portion will be charged-off. The remaining balance, properly margined, may then be upgraded to substandard, however must remain on non-accrual. Loss. Loans classified as loss, risk rated 10-Loss, are considered un-collectible and of such little value that the continuance as an active Company asset is not warranted. This rating does not mean that the loan has no recovery or salvage value, but rather that the loan should be charged-off now, even though partial or full recovery may be possible in the future. Impaired. Loans are classified as impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal and interest when due, in accordance with the terms of the original loan agreement, without unreasonable delay. This generally includes all loans classified as nonaccrual and troubled debt restructurings. Impaired loans are risk rated for internal and regulatory rating purposes, but presented separately for clarification. Homogeneous loans maintain their original risk rating until they are greater than 30 days past due, and risk rating reclassification is based primarily on the past due status of the loan. The risk rating categories can be generally described by the following groupings for commercial and commercial real estate homogeneous loans: Watch. A homogeneous watch loan, risk rated 6, is 30-59 days past due from the required payment date at month-end. Special Mention. A homogeneous special mention loan, risk rated 7, is 60-89 days past due from the required payment date at month-end. S ubstandard. A homogeneous substandard loan, risk rated 8, is 90 days or more past due from the required payment date at month-end. Loss. A homogeneous loss loan is risk rated 10 when the loss has been confirmed and charged off through the Bank’s commercial special assets collection process. . The risk rating categories can be generally described by the following groupings for residential and home equity and other homogeneous loans: Watch. A homogeneous retail watch loan, risk rated 6, is 60-89 days past due from the required payment date at month-end. Substandard. A homogeneous retail substandard loan, risk rated 8, is 90-179 days past due from the required payment date at month-end. Loss. A homogeneous retail loss loan is risk rated 10 when it becomes past due 180 cumulative days from the contractual due date. These loans are generally charged-off in the month in which the 180 day period elapses. Residential and home equity loans modified in a troubled debt restructure are not considered homogeneous. The risk rating classification for such loans are based on the non-homogeneous definitions noted above. The following tables summarize designated loan grades by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,422,002 (1) $ 2,812 $ 12,187 $ 7,192 $ 1,444,193 Home equity and other 467,900 147 825 1,401 470,273 1,889,902 2,959 13,012 8,593 1,914,466 Commercial real estate loans Non-owner occupied commercial real estate 622,453 10,068 405 793 633,719 Multifamily 777,176 33,917 503 296 811,892 Construction/land development 715,642 21,927 1,603 76 739,248 2,115,271 65,912 2,511 1,165 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 358,034 21,292 12,277 2,242 393,845 Commercial business 230,732 37,457 16,688 2,490 287,367 588,766 58,749 28,965 4,732 681,212 $ 4,593,939 $ 127,620 $ 44,488 $ 14,490 $ 4,780,537 (1) Includes $5.3 million of loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations. At December 31, 2017 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,355,965 (1) $ 2,982 $ 11,328 $ 11,091 $ 1,381,366 Home equity and other 451,194 143 751 1,401 453,489 1,807,159 3,125 12,079 12,492 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 613,181 8,801 — 800 622,782 Multifamily 693,190 34,038 507 302 728,037 Construction/land development 664,025 22,062 1,466 78 687,631 1,970,396 64,901 1,973 1,180 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 361,429 20,949 6,399 2,836 391,613 Commercial business 220,461 39,588 1,959 2,701 264,709 581,890 60,537 8,358 5,537 656,322 $ 4,359,445 $ 128,563 $ 22,410 $ 19,209 $ 4,529,627 (1) Includes $5.5 million of loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations. As of March 31, 2018 and December 31, 2017 , none of the Company's loans were rated Doubtful or Loss. For a detailed discussion on credit quality, see Note 5, Loans and Credit Quality , within our 2017 Annual Report on Form 10-K. Nonaccrual and Past Due Loans Loans are placed on nonaccrual status when the full and timely collection of principal and interest is doubtful, generally when the loan becomes 90 days or more past due for principal or interest payment or if part of the principal balance has been charged off. Loans whose repayments are insured by the Federal Housing Administration ("FHA") or guaranteed by the Veterans Administration ("VA") are generally maintained on accrual status even if 90 days or more past due. The following tables present an aging analysis of past due loans by loan portfolio segment and loan class. At March 31, 2018 (in thousands) 30-59 days past due 60-89 days past due 90 days or more past due Total past due Current Total loans 90 days or more past due and accruing Consumer loans Single family $ 12,636 $ 7,750 $ 45,926 $ 66,312 $ 1,377,881 (1) $ 1,444,193 $ 38,734 (2) Home equity and other 186 28 1,400 1,614 468,659 470,273 — 12,822 7,778 47,326 67,926 1,846,540 1,914,466 38,734 Commercial real estate loans Non-owner occupied commercial real estate — — — — 633,719 633,719 — Multifamily — — 296 296 811,596 811,892 — Construction/land development — — 76 76 739,172 739,248 — — — 372 372 2,184,487 2,184,859 — Commercial and industrial loans Owner occupied commercial real estate — — 626 626 393,219 393,845 — Commercial business 378 — 1,288 1,666 285,701 287,367 — 378 — 1,914 2,292 678,920 681,212 — $ 13,200 $ 7,778 $ 49,612 $ 70,590 $ 4,709,947 $ 4,780,537 $ 38,734 At December 31, 2017 (in thousands) 30-59 days 60-89 days 90 days or Total past Current Total 90 days or Consumer loans Single family $ 10,493 $ 4,437 $ 48,262 $ 63,192 $ 1,318,174 (1) $ 1,381,366 $ 37,171 (2) Home equity and other 750 20 1,404 2,174 451,315 453,489 — 11,243 4,457 49,666 65,366 1,769,489 1,834,855 37,171 Commercial real estate loans Non-owner occupied commercial real estate — — — — 622,782 622,782 — Multifamily — — 302 302 727,735 728,037 — Construction/land development 641 — 78 719 686,912 687,631 — 641 — 380 1,021 2,037,429 2,038,450 — Commercial and industrial loans Owner occupied commercial real estate — — 640 640 390,973 391,613 — Commercial business 377 — 1,526 1,903 262,806 264,709 — 377 — 2,166 2,543 653,779 656,322 — $ 12,261 $ 4,457 $ 52,212 $ 68,930 $ 4,460,697 $ 4,529,627 $ 37,171 (1) Includes $5.3 million and $5.5 million of loans at March 31, 2018 and December 31, 2017 , respectively, where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in our consolidated statements of operations. (2) FHA-insured and VA-guaranteed single family loans that are 90 days or more past due are maintained on accrual status if they are determined to have little to no risk of loss. The following tables present performing and nonperforming loan balances by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,437,001 (1) $ 7,192 $ 1,444,193 Home equity and other 468,872 1,401 470,273 1,905,873 8,593 1,914,466 Commercial real estate loans Non-owner occupied commercial real estate 633,719 — 633,719 Multifamily 811,596 296 811,892 Construction/land development 739,172 76 739,248 2,184,487 372 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 393,219 626 393,845 Commercial business 286,079 1,288 287,367 679,298 1,914 681,212 $ 4,769,658 $ 10,879 $ 4,780,537 At December 31, 2017 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,370,275 (1) $ 11,091 $ 1,381,366 Home equity and other 452,085 1,404 453,489 1,822,360 12,495 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 622,782 — 622,782 Multifamily 727,735 302 728,037 Construction/land development 687,553 78 687,631 2,038,070

Deposits

Deposits	3 Months Ended
Deposits	Mar. 31, 2018
Banking and Thrift [Abstract]
DEPOSITS	DEPOSITS: Deposit balances, including stated rates, were as follows. (in thousands) At March 31, At December 31, Noninterest-bearing accounts $ 1,027,285 $ 980,902 NOW accounts, 0.00% to 1.00% at March 31, 2018 and 0.00% to 1.98% at December 31, 2017 480,620 461,349 Statement savings accounts, due on demand, 0.05% to 1.13% at March 31, 2018 and December 31, 2017 295,096 293,858 Money market accounts, due on demand, 0.00% to 1.62% and at March 31, 2018 and 0.00% to 1.80% at December 31, 2017 1,926,153 1,834,154 Certificates of deposit, 0.05% to 3.80% at March 31, 2018 and December 31, 2017 1,319,842 1,190,689 $ 5,048,996 $ 4,760,952 Interest expense on deposits was as follows. Three Months Ended March 31, (in thousands) 2018 2017 NOW accounts $ 440 $ 477 Statement savings accounts 229 252 Money market accounts 3,459 2,230 Certificates of deposit 3,660 2,664 $ 7,788 $ 5,623 The weighted-average interest rates on certificates of deposit were 1.28% and 1.12% at March 31, 2018 and December 31, 2017 , respectively. Certificates of deposit outstanding mature as follows. (in thousands) At March 31, Within one year $ 1,068,216 One to two years 187,776 Two to three years 35,116 Three to four years 7,980 Four to five years 20,437 Thereafter 317 $ 1,319,842 The aggregate amount of time deposits in denominations of more than $250 thousand at March 31, 2018 and December 31, 2017 were $86.6 million and $88.8 million , respectively. There were $489.7 million and $345.5 million of brokered deposits at March 31, 2018 and December 31, 2017

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
Derivatives and Hedging Activities	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES AND HEDGING ACTIVITIES	DERIVATIVES AND HEDGING ACTIVITIES: To reduce the risk of significant interest rate fluctuations on the value of certain assets and liabilities, such as certain mortgage loans held for sale or Mortgage Servicing Rights ("MSRs"), the Company utilizes derivatives, such as forward sale commitments, futures, option contracts, interest rate swaps and interest rate swaptions as risk management instruments in its hedging strategy. Derivative transactions are measured in terms of notional amount, which is not recorded in the consolidated statements of financial condition. The notional amount is generally not exchanged and is used as the basis for interest and other contractual payments. We held no derivatives designated as a fair value, cash flow or foreign currency hedge instrument at March 31, 2018 or December 31, 2017 . Derivatives are reported at their respective fair values in the other assets or accounts payable and other liabilities line items on the consolidated statements of financial condition, with changes in fair value reflected in current period earnings. As permitted under U.S. GAAP, the Company nets derivative assets and liabilities when a legally enforceable master netting agreement exists between the Company and the derivative counterparty, which are documented under industry standard master agreements and credit support annexes. The Company's master netting agreements provide that following an uncured payment default or other event of default, the non-defaulting party may promptly terminate all transactions between the parties and determine a net amount due to be paid to, or by, the defaulting party. An event of default may also occur under a credit support annex if a party fails to make a collateral delivery (which remains uncured following applicable notice and grace periods). The Company's right of offset requires that master netting agreements are legally enforceable and that the exercise of rights by the non-defaulting party under these agreements will not be stayed or avoided under applicable law upon an event of default, including bankruptcy, insolvency or similar proceeding. The collateral used under the Company's master netting agreements is typically cash, but securities may be used under agreements with certain counterparties. Receivables related to cash collateral that has been paid to counterparties is included in other assets on the Company's consolidated statements of financial condition. Any securities pledged to counterparties as collateral remain on the consolidated statements of financial condition. Refer to Note 2, Investment Securities, for further information on securities collateral pledged. At March 31, 2018 and December 31, 2017 , the Company did not hold any collateral received from counterparties under derivative transactions. For further information on the policies that govern derivative and hedging activities, see Note 1, Summary of Significant Accounting Policies, and Note 11, Derivatives and Hedging Activities, within our 2017 Annual Report on Form 10-K. The notional amounts and fair values for derivatives consist of the following. At March 31, 2018 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 1,912,574 $ 3,615 $ (4,150 ) Interest rate swaptions 475,000 217 — Interest rate lock and purchase loan commitments 622,565 16,734 (58 ) Interest rate swaps 1,692,550 15,550 (36,027 ) Eurodollar futures 3,643,000 — — Total derivatives before netting $ 8,345,689 36,116 (40,235 ) Netting adjustment/Cash collateral (1) (12,723 ) 36,732 Carrying value on consolidated statements of financial condition $ 23,393 $ (3,503 ) (1) Includes cash collateral of $24.0 million at March 31, 2018 as part of netting adjustments which primarily consists of collateral transferred by the Company at the initiation of derivative transactions and held by the counterparty as security. At December 31, 2017 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 1,687,658 $ 1,311 $ (1,445 ) Interest rate swaptions 120,000 — — Interest rate lock and purchase loan commitments 472,733 12,950 (25 ) Interest rate swaps 1,869,000 12,171 (23,654 ) Eurodollar futures 3,287,000 — (101 ) Total derivatives before netting $ 7,436,391 26,432 (25,225 ) Netting adjustment/Cash collateral (1) (6,646 ) 23,505 Carrying value on consolidated statements of financial condition $ 19,786 $ (1,720 ) (1) Includes cash collateral of $16.9 million at December 31, 2017 as part of netting adjustments which primarily consists of collateral transferred by the Company at the initiation of derivative transactions and held by the counterparty as security. The following tables present gross and net information about derivative instruments. At March 31, 2018 (in thousands) Gross fair value Netting adjustments/ Cash collateral (1) Carrying value Securities not offset in consolidated balance sheet (disclosure-only netting) Net amount Derivative assets $ 36,116 $ (12,723 ) $ 23,393 $ — $ 23,393 Derivative liabilities (40,235 ) 36,732 (3,503 ) 2,517 (986 ) At December 31, 2017 (in thousands) Gross fair value Netting adjustments/ Cash collateral (1) Carrying value Securities not offset in consolidated balance sheet (disclosure-only netting) Net amount Derivative assets $ 26,432 $ (6,646 ) $ 19,786 $ — $ 19,786 Derivative liabilities (25,225 ) 23,505 (1,720 ) 1,213 (507 ) (1) Includes cash collateral of $24.0 million and $16.9 million at March 31, 2018 and December 31, 2017 respectively, as part of the netting adjustments which primarily consists of collateral transferred by the Company at the initiation of derivative transactions and held by the counterparty as security. The following table presents the net gain (loss) recognized on derivatives, including economic hedge derivatives, within the respective line items in the statement of operations for the periods indicated. Three Months Ended March 31, (in thousands) 2018 2017 Recognized in noninterest income: Net gain (loss) on loan origination and sale activities (1) $ 14,125 $ (1,499 ) Loan servicing income (2) (30,977 ) 379 $ (16,852 ) $ (1,120 ) (1) Comprised of interest rate lock commitments ("IRLCs") and forward contracts used as an economic hedge of IRLCs and single family mortgage loans held for sale. (2)

Mortgage Banking Operations

Mortgage Banking Operations	3 Months Ended
Mortgage Banking Operations	Mar. 31, 2018
Mortgage Banking [Abstract]
MORTGAGE BANKING OPERATIONS	MORTGAGE BANKING OPERATIONS: Loans held for sale consisted of the following. (in thousands) At March 31, At December 31, Single family $ 451,665 $ 577,313 Multifamily DUS ® (1) 18,566 29,651 Small Business Administration ("SBA") 2,301 3,938 CRE-Non-DUS ® (1)(2) 28,001 — Total loans held for sale $ 500,533 $ 610,902 (1) Fannie Mae Multifamily Delegated Underwriting and Servicing Program (“DUS" ® ) is a registered trademark of Fannie Mae. (2) Loans originated as Held for Investment. Loans sold proceeds consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Single family $ 1,550,724 $ 1,739,737 Multifamily DUS ® (1) 32,976 76,849 SBA 3,692 7,635 CRE-Non-DUS ® (1)(2) — 5,551 (3) Total loans sold $ 1,587,392 $ 1,829,772 (1) Fannie Mae Multifamily DUS ® is a registered trademark of Fannie Mae. (2) Loans originated as Held for Investment. (3) Balance represents termination of participation agreement. Gain on loan origination and sale activities, including the effects of derivative risk management instruments, consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Single family: Servicing value and secondary market gains (1) $ 41,427 $ 50,538 Loan origination and funding fees 5,445 5,781 Total single family 46,872 56,319 Multifamily DUS ® 1,146 3,360 SBA 301 602 Total gain on loan origination and sale activities $ 48,319 $ 60,281 (1) Comprised of gains and losses on interest rate lock and purchase loan commitments (which considers the value of servicing), single family loans held for sale, forward sale commitments used to economically hedge secondary market activities, and changes in the Company's repurchase liability for loans that have been sold. The Company’s portfolio of loans serviced for others is primarily comprised of loans held in U.S. government and agency MBS issued by Fannie Mae, Freddie Mac and Ginnie Mae. Loans serviced for others are not included in the consolidated statements of financial condition as they are not assets of the Company. The composition of loans serviced for others that contribute to loan servicing income is presented below at the unpaid principal balance. (in thousands) At March 31, At December 31, Single family U.S. government and agency $ 22,715,153 $ 22,123,710 Other 504,423 507,437 23,219,576 22,631,147 Commercial Multifamily DUS ® 1,323,937 1,311,399 Other 81,436 79,797 1,405,373 1,391,196 Total loans serviced for others $ 24,624,949 $ 24,022,343 The Company has made representations and warranties that the loans sold meet certain requirements. The Company may be required to repurchase mortgage loans or indemnify loan purchasers due to defects in the origination process of the loan, such as documentation errors, underwriting errors and judgments, appraisal errors, early payment defaults and fraud. For further information on the Company's mortgage repurchase liability, see Note 7, Commitments, Guarantees and Contingencies, of this Quarterly Report on Form 10-Q. The following is a summary of changes in the Company's liability for estimated mortgage repurchase losses. Three Months Ended March 31, (in thousands) 2018 2017 Balance, beginning of period $ 3,015 $ 3,382 Additions (reductions), net of adjustments (1) 610 (360 ) Realized losses (2) (960 ) (159 ) Balance, end of period $ 2,665 $ 2,863 (1) Includes additions for new loan sales and changes in estimated probable future repurchase losses on previously sold loans. (2) Includes principal losses and accrued interest on repurchased loans, “make-whole” settlements, settlements with claimants and certain related expense. The Company has agreements with certain investors to advance scheduled principal and interest amounts on delinquent loans. Advances are also made to fund the foreclosure and collection costs of delinquent loans prior to the recovery of reimbursable amounts from investors or borrowers. Advances of $4.9 million and $5.3 million were recorded in other assets as of March 31, 2018 and December 31, 2017 , respectively. When the Company has the unilateral right to repurchase Ginnie Mae pool loans it has previously sold (generally loans that are more than 90 days past due), the Company then records the loan on its consolidated statement of financial condition. At both March 31, 2018 and December 31, 2017 , delinquent or defaulted mortgage loans currently in Ginnie Mae pools that the Company has recognized on its consolidated statements of financial condition totaled $47.9 million and $39.3 million , respectively, with a corresponding amount recorded within accounts payable and other liabilities on the consolidated statements of financial condition. The recognition of previously sold loans does not impact the accounting for the previously recognized MSRs. Revenue from mortgage servicing, including the effects of derivative risk management instruments, consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Servicing income, net: Servicing fees and other $ 18,451 $ 16,179 Changes in fair value of single family MSRs due to modeled amortization (1) (8,870 ) (8,520 ) Amortization of multifamily and SBA MSRs (1,049 ) (931 ) 8,532 6,728 Risk management, single family MSRs: Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) 30,019 2,132 Net (loss) gain from derivatives economically hedging MSR (30,977 ) 379 (958 ) 2,511 Loan servicing income $ 7,574 $ 9,239 (1) Represents changes due to collection/realization of expected cash flows and curtailments. (2) Principally reflects changes in market inputs, which include current market interest rates and prepayment model updates, both of which affect future prepayment speed and cash flow projections. All MSRs are initially measured and recorded at fair value at the time loans are sold. Single family MSRs are subsequently carried at fair value with changes in fair value reflected in earnings in the periods in which the changes occur, while multifamily and SBA MSRs are subsequently carried at the lower of amortized cost or fair value. The fair value of MSRs is determined based on the price that would be received to sell the MSRs in an orderly transaction between market participants at the measurement date. The Company determines fair value using a valuation model that calculates the net present value of estimated future cash flows. Estimates of future cash flows include contractual servicing fees, ancillary income and costs of servicing, the timing of which are impacted by assumptions, primarily expected prepayment speeds and discount rates, which relate to the underlying performance of the loans. The initial fair value measurement of MSRs is adjusted up or down depending on whether the underlying loan pool interest rate is at a premium, discount or par. Key economic assumptions used in measuring the initial fair value of capitalized single family MSRs were as follows. Three Months Ended March 31, (rates per annum) (1) 2018 2017 Constant prepayment rate ("CPR") (2) 13.61 % 11.91 % Discount rate (3) 10.23 % 10.28 % (1) Weighted average rates for sales during the period for sales of loans with similar characteristics. (2) Represents the expected lifetime average. (3) Discount rate is a rate based on market observations. Key economic assumptions and the sensitivity of the current fair value for single family MSRs to immediate adverse changes in those assumptions were as follows. (dollars in thousands) At March 31, 2018 Fair value of single family MSR $ 294,062 Expected weighted-average life (in years) 6.79 Constant prepayment rate (1) 10.61 % Impact on fair value of 25 basis points adverse change in interest rates $ (19,363 ) Impact on fair value of 50 basis points adverse change in interest rates $ (40,689 ) Discount rate 10.30 % Impact on fair value of 100 basis points increase $ (11,028 ) Impact on fair value of 200 basis points increase $ (21,277 ) (1) Represents the expected lifetime average. These sensitivities are hypothetical and subject to key assumptions of the underlying valuation model. As the table above demonstrates, the Company’s methodology for estimating the fair value of MSRs is highly sensitive to changes in key assumptions. For example, actual prepayment experience may differ and any difference may have a material effect on MSR fair value. Changes in fair value resulting from changes in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, in this table, the effect of a variation in a particular assumption on the fair value of the MSRs is calculated without changing any other assumption; in reality, changes in one factor may be associated with changes in another (for example, decreases in market interest rates may provide an incentive to refinance; however, this may also indicate a slowing economy and an increase in the unemployment rate, which reduces the number of borrowers who qualify for refinancing), which may magnify or counteract the sensitivities. Thus, any measurement of MSR fair value is limited by the conditions existing and assumptions made as of a particular point in time. Those assumptions may not be appropriate if they are applied to a different point in time. The changes in single family MSRs measured at fair value are as follows. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ 258,560 $ 226,113 Additions and amortization: Originations 14,353 15,918 Purchases — 354 Changes due to modeled amortization (1) (8,870 ) (8,520 ) Net additions and amortization 5,483 7,752 Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) 30,019 2,132 Ending balance $ 294,062 $ 235,997 (1) Represents changes due to collection/realization of expected cash flows and curtailments. (2) Principally reflects changes in market inputs, which include current market interest rates and prepayment model updates, both of which affect future prepayment speed and cash flow projections. MSRs resulting from the sale of multifamily loans are recorded at fair value and subsequently carried at the lower of amortized cost or fair value. Multifamily MSRs are amortized in proportion to, and over, the estimated period the net servicing income will be collected. The changes in multifamily MSRs measured at the lower of amortized cost or fair value were as follows. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ 26,093 $ 19,747 Origination 934 2,608 Amortization (985 ) (931 ) Ending balance $ 26,042 $ 21,424 At March 31, 2018 , the expected weighted-average life of the Company’s multifamily MSRs was 10.32 years . Projected amortization expense for the gross carrying value of multifamily MSRs is estimated as follows. (in thousands) At March 31, 2018 Remainder of 2018 $ 2,707 2019 3,514 2020 3,441 2021 3,232 2022 2,913 2023 and thereafter 10,235 Carrying value of multifamily MSR $ 26,042

Commitments, Guarantees and Con

Commitments, Guarantees and Contingencies	3 Months Ended
Commitments, Guarantees and Contingencies	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS, GUARANTEES AND CONTINGENCIES	COMMITMENTS, GUARANTEES AND CONTINGENCIES: Commitments Commitments to extend credit are agreements to lend to customers in accordance with predetermined contractual provisions. These commitments may be for specific periods or contain termination clauses and may require the payment of a fee by the borrower. The total amount of unused commitments do not necessarily represent future credit exposure or cash requirements in that commitments may expire without being drawn upon. The Company makes certain unfunded loan commitments as part of its lending activities that have not been recognized in the Company’s financial statements. These include commitments to extend credit made as part of the Company's lending activities on loans the Company intends to hold in its loans held for investment portfolio. The aggregate amount of these unrecognized unfunded loan commitments existing at March 31, 2018 and December 31, 2017 was $52.3 million and $56.9 million , respectively. In the ordinary course of business, the Company extends secured and unsecured open-end loans to meet the financing needs of its customers. Undistributed construction loan commitments, where the Company has an obligation to advance funds for construction progress payments, were $737.7 million and $706.7 million at March 31, 2018 and December 31, 2017 , respectively. Unused home equity and commercial banking funding lines totaled $483.8 million and $456.1 million at March 31, 2018 and December 31, 2017 , respectively. The Company has recorded an allowance for credit losses on loan commitments, included in accounts payable and other liabilities on the consolidated statements of financial condition, of $1.4 million and $1.3 million at March 31, 2018 and December 31, 2017 , respectively. Guarantees In the ordinary course of business, the Company sells loans through the Fannie Mae Multifamily DUS ® that are subject to a credit loss sharing arrangement. The Company services the loans for Fannie Mae and shares in the risk of loss with Fannie Mae under the terms of the DUS ® contracts. Under the program, the DUS ® lender is contractually responsible for the first 5% of losses and then shares in the remainder of losses with Fannie Mae with a maximum lender loss of 20% of the original principal balance of each DUS ® loan. For loans that have been sold through this program, a liability is recorded for this loss sharing arrangement under the accounting guidance for guarantees. As of March 31, 2018 and December 31, 2017 , the total unpaid principal balance of loans sold under this program was $1.32 billion and $1.31 billion , respectively. The Company’s reserve liability related to this arrangement totaled $2.0 million and $2.0 million at March 31, 2018 and December 31, 2017 , respectively. There were no actual losses incurred under this arrangement during the three months ended March 31, 2018 and 2017 . Mortgage repurchase liability In the ordinary course of business, the Company sells residential mortgage loans to GSEs and other entities. In addition, the Company pools FHA-insured and VA-guaranteed mortgage loans into Ginnie Mae guaranteed mortgage-backed securities and pools conventional loans into Fannie Mae and Freddie Mac guaranteed mortgage-backed securities. The Company has made representations and warranties that the loans sold meet certain requirements. The Company may be required to repurchase mortgage loans, or indemnify loan purchasers, or FHA or VA due to defects in the origination process of the loan, such as documentation errors, underwriting errors and judgments, early payment defaults and fraud. These obligations expose the Company to mark-to-market and credit losses on the repurchased mortgage loans after accounting for any mortgage insurance that we may receive. Generally, the maximum amount of future payments the Company would be required to make for breaches of these representations and warranties would be equal to the unpaid principal balance of such loans that are deemed to have defects that were sold to purchasers plus, in certain circumstances, accrued and unpaid interest on such loans and certain expenses. The Company does not typically receive repurchase requests from the FHA or VA. As an originator of FHA-insured or VA-guaranteed loans, the Company is responsible for obtaining the insurance with the FHA or the guarantee with the VA. If loans are later found not to meet the requirements of the FHA or VA, through required internal quality control reviews or through agency audits, the Company may be required to indemnify the FHA or VA against losses. The loans remain in Ginnie Mae pools unless and until they are repurchased by the Company. In general, once an FHA or VA loan becomes 90 days past due, the Company repurchases the FHA or VA residential mortgage loan to minimize the cost of interest advances on the loan. If the loan is cured through borrower efforts or through loss mitigation activities, the loan may be resold into a Ginnie Mae pool. The Company's liability for mortgage loan repurchase losses incorporates probable losses associated with such indemnification. The total unpaid principal balance of loans sold on a servicing-retained basis that were subject to the terms and conditions of these representations and warranties totaled $23.30 billion and $22.71 billion as of March 31, 2018 and December 31, 2017 , respectively. At March 31, 2018 and December 31, 2017 , the Company had recorded a mortgage repurchase liability for loans sold on a servicing-retained and servicing-released basis, included in accounts payable and other liabilities on the consolidated statements of financial condition, of $2.7 million and $3.0 million , respectively. Contingencies In the normal course of business, the Company may have various legal claims and other similar contingent matters outstanding for which a loss may be realized. For these claims, the Company establishes a liability for contingent losses when it is probable that a loss has been incurred and the amount of loss can be reasonably estimated. For claims determined to be reasonably possible but not probable of resulting in a loss, there may be a range of possible losses in excess of the established liability. At March 31, 2018 , we reviewed our legal claims and determined that there were no material claims that were considered to be probable or reasonably possible of resulting in a material loss. As a result, the Company did not have any material amounts reserved for legal claims as of March 31, 2018

Fair Value Measurement

Fair Value Measurement	3 Months Ended
Fair Value Measurement	Mar. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT	FAIR VALUE MEASUREMENT: For a further discussion of fair value measurements, including information regarding the Company’s valuation methodologies and the fair value hierarchy, see Note 17, Fair Value Measurement within our 2017 Annual Report on Form 10-K. Valuation Processes The Company has various processes and controls in place to ensure that fair value measurements are reasonably estimated. The Finance Committee of the Board provides oversight and approves the Company’s Asset/Liability Management Policy ("ALMP"). The Company's ALMP governs, among other things, the application and control of the valuation models used to measure fair value. On a quarterly basis, the Company’s Asset/Liability Management Committee ("ALCO") and the Finance Committee of the Board review significant modeling variables used to measure the fair value of the Company’s financial instruments, including the significant inputs used in the valuation of single family MSRs. Additionally, ALCO periodically obtains an independent review of the MSR valuation process and procedures, including a review of the model architecture and the valuation assumptions. The Company obtains an MSR valuation from an independent valuation firm monthly to assist with the validation of the fair value estimate and the reasonableness of the assumptions used in measuring fair value. The Company’s real estate valuations are overseen by the Company’s appraisal department. The appraisal department maintains the Company’s appraisal policy and recommends changes to the policy subject to approval by the Company’s Loan Committee and the Credit Committee of the Board. The Company’s appraisals are prepared by independent third-party appraisers and the Company’s internal appraisers. Single family appraisals are generally reviewed by the Company’s single family loan underwriters. Single family appraisals with unusual, higher risk or complex characteristics, as well as commercial real estate appraisals, are reviewed by the Company’s appraisal department. We obtain pricing from third party service providers for determining the fair value of a substantial portion of our investment securities available for sale. We have processes in place to evaluate such third party pricing services to ensure information obtained and valuation techniques used are appropriate. For fair value measurements obtained from third party services, we monitor and review the results to ensure the values are reasonable and in line with market experience for similar classes of securities. While the inputs used by the pricing vendor in determining fair value are not provided, and therefore unavailable for our review, we do perform certain procedures to validate the values received, including comparisons to other sources of valuation (if available), comparisons to other independent market data and a variance analysis of prices by Company personnel that are not responsible for the performance of the investment securities. Estimation of Fair Value Fair value is based on quoted market prices, when available. In cases where a quoted price for an asset or liability is not available, the Company uses valuation models to estimate fair value. These models incorporate inputs such as forward yield curves, loan prepayment assumptions, expected loss assumptions, market volatilities, and pricing spreads utilizing market-based inputs where readily available. The Company believes its valuation methods are appropriate and consistent with those that would be used by other market participants. However, imprecision in estimating unobservable inputs and other factors may result in these fair value measurements not reflecting the amount realized in an actual sale or transfer of the asset or liability in a current market exchange. The following table summarizes the fair value measurement methodologies, including significant inputs and assumptions, and classification of the Company’s assets and liabilities. Asset/Liability class Valuation methodology, inputs and assumptions Classification Cash and cash equivalents Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Investment securities Investment securities available for sale Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 2 recurring fair value measurement. Investment securities held to maturity Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at amortized cost. Loans held for sale Single family loans, excluding loans transferred from held for investment Fair value is based on observable market data, including: • Quoted market prices, where available • Dealer quotes for similar loans • Forward sale commitments Level 2 recurring fair value measurement. When not derived from observable market inputs, fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Estimated fair value classified as Level 3. Loans originated as held for investment and transferred to held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at lower of amortized cost or fair value. Multifamily loans (DUS ® ) and other The sale price is set at the time the loan commitment is made, and as such subsequent changes in market conditions have a very limited effect, if any, on the value of these loans carried on the consolidated statements of financial condition, which are typically sold within 30 days of origination. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 2. Asset/Liability class Valuation methodology, inputs and assumptions Classification Loans held for investment Loans held for investment, excluding collateral dependent loans and loans transferred from held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments For the carrying value of loans see Note 1–Summary of Significant Accounting Policies of the 2017 Annual Report on Form 10-K. Loans held for investment, collateral dependent Fair value is based on appraised value of collateral, which considers sales comparison and income approach methodologies. Adjustments are made for various factors, which may include: • Adjustments for variations in specific property qualities such as location, physical dissimilarities, market conditions at the time of sale, income producing characteristics and other factors • Adjustments to obtain “upon completion” and “upon stabilization” values (e.g., property hold discounts where the highest and best use would require development of a property over time) • Bulk discounts applied for sales costs, holding costs and profit for tract development and certain other properties Carried at lower of amortized cost or fair value of collateral, less the estimated cost to sell. Loans held for investment transferred from loans held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 3 recurring fair value measurement. Mortgage servicing rights Single family MSRs For information on how the Company measures the fair value of its single family MSRs, including key economic assumptions and the sensitivity of fair value to changes in those assumptions, see Note 6 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and SBA Fair value is based on discounted estimated future servicing fees and other revenue, less estimated costs to service the loans. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 3. Derivatives Eurodollar futures Fair value is based on closing exchange prices. Level 1 recurring fair value measurement. Interest rate swaps Interest rate swaptions Forward sale commitments Fair value is based on quoted prices for identical or similar instruments, when available. Level 2 recurring fair value measurement. Asset/Liability class Valuation methodology, inputs and assumptions Classification Interest rate lock and purchase loan commitments The fair value considers several factors including: • Fair value of the underlying loan based on quoted prices in the secondary market, when available. • Value of servicing • Fall-out factor Level 3 recurring fair value measurement. Other real estate owned (“OREO”) Fair value is based on appraised value of collateral, less the estimated cost to sell. See discussion of "loans held for investment, collateral dependent" above for further information on appraisals. Carried at lower of amortized cost or fair value of collateral (Level 3), less the estimated cost to sell. Federal Home Loan Bank stock Carrying value approximates fair value as FHLB stock can only be purchased or redeemed at par value. Carried at par value. Estimated fair value classified as Level 2. Deposits Demand deposits Fair value is estimated as the amount payable on demand at the reporting date. Carried at historical cost. Par value classified as Level 2. Fixed-maturity certificates of deposit Fair value is estimated using discounted cash flows based on market rates currently offered for deposits of similar remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal Home Loan Bank advances Fair value is estimated using discounted cash flows based on rates currently available for advances with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal funds purchased and securities sold under agreements to repurchase Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Long-term debt Fair value is estimated using discounted cash flows based on current lending rates for similar long-term debt instruments with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. The following table presents the levels of the fair value hierarchy for the Company’s assets and liabilities measured at fair value on a recurring basis. (in thousands) Fair Value at March 31, 2018 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 121,356 $ — $ 121,356 $ — Commercial 31,406 — 31,406 — Municipal bonds 374,640 — 374,640 — Collateralized mortgage obligations: Residential 169,371 — 169,371 — Commercial 97,727 — 97,727 — Corporate debt securities 21,761 — 21,761 — U.S. Treasury securities 10,489 — 10,489 — Agency debentures 9,450 — 9,450 — Single family mortgage servicing rights 294,062 — — 294,062 Single family loans held for sale 451,669 — 448,343 3,326 Single family loans held for investment 5,304 — — 5,304 Derivatives Forward sale commitments 3,615 — 3,615 — Interest rate swaptions 217 — 217 — Interest rate lock and purchase loan commitments 16,734 — — 16,734 Interest rate swaps 15,550 — 15,550 — Total assets $ 1,623,351 $ — $ 1,303,925 $ 319,426 Liabilities: Derivatives Forward sale commitments $ 4,150 $ — $ 4,150 $ — Interest rate lock and purchase loan commitments 58 — — 58 Interest rate swaps 36,027 — 36,027 — Total liabilities $ 40,235 $ — $ 40,177 $ 58 (in thousands) Fair Value at December 31, 2017 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 130,090 $ — $ 130,090 $ — Commercial 23,694 — 23,694 — Municipal bonds 388,452 — 388,452 — Collateralized mortgage obligations: Residential 160,424 — 160,424 — Commercial 98,569 — 98,569 — Corporate debt securities 24,737 — 24,737 — U.S. Treasury securities 10,652 — 10,652 — Agency debentures 9,650 9,650 — Single family mortgage servicing rights 258,560 — — 258,560 Single family loans held for sale 577,313 — 575,977 1,336 Single family loans held for investment 5,477 — — 5,477 Derivatives Forward sale commitments 1,311 — 1,311 — Interest rate lock and purchase loan commitments 12,950 — — 12,950 Interest rate swaps 12,172 — 12,172 — Total assets $ 1,714,051 $ — $ 1,435,728 $ 278,323 Liabilities: Derivatives Eurodollar futures $ 101 $ 101 $ — $ — Forward sale commitments 1,445 — 1,445 — Interest rate lock and purchase loan commitments 25 — — 25 Interest rate swaps 23,654 — 23,654 — Total liabilities $ 25,225 $ 101 $ 25,099 $ 25 There were no transfers between levels of the fair value hierarchy during the three months ended March 31, 2018 and 2017 . Level 3 Recurring Fair Value Measurements The Company's Level 3 recurring fair value measurements consist of single family MSRs, single family loans held for investment where fair value option was elected, certain single family loans held for sale, and interest rate lock and purchase loan commitments, which are accounted for as derivatives. For information regarding fair value changes and activity for single family MSRs during the three months ended March 31, 2018 and 2017 , see Note 6, Mortgage Banking Operations of this Form 10-Q. The Company transferred certain loans from held for sale to held for investment. These loans were originated as held for sale loans where the Company had elected fair value option. The Company determined these loans to be level 3 recurring assets as the valuation technique included a significant unobservable input. The total amount of held for investment loans where fair value option election was made was $5.3 million at March 31, 2018 . The following information presents significant Level 3 unobservable inputs used to measure fair value of single family loans held for investment where fair value option was elected. (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,304 Income approach Implied spread to benchmark interest rate curve 3.31% 5.09% 3.95% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,477 Income approach Implied spread to benchmark interest rate curve 3.61% 4.96% 4.10% The following information presents significant Level 3 unobservable inputs used to measure fair value of certain single family loans held for sale where fair value option was elected. (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 3,326 Income approach Implied spread to benchmark interest rate curve 3.68% 5.00% 4.00% Market price movement from comparable bond 0.14% 0.33% 0.23% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 1,336 Income approach Implied spread to benchmark interest rate curve 3.93% 3.93% 3.93% Market price movement from comparable bond (0.38)% (0.10)% (0.24)% The following table presents fair value changes and activity for Level 3 interest rate lock and purchase loan commitments. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance, net $ 12,925 $ 19,219 Total realized/unrealized gains 22,514 35,459 Settlements (18,763 ) (27,542 ) Ending balance, net $ 16,676 $ 27,136 The following tables present fair value changes and activity for Level 3 loans held for sale and loans held for investment. Three Months Ended March 31, 2018 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 1,336 $ 2,045 $ — $ — $ (55 ) $ 3,326 Loans held for investment 5,477 — — — (173 ) 5,304 Three Months Ended March 31, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 41,810 $ 2,799 $ (690 ) $ (3,226 ) $ (363 ) $ 40,330 Loans held for investment 17,988 — 1,206 — (152 ) 19,042 The following information presents significant Level 3 unobservable inputs used to measure fair value of interest rate lock and purchase loan commitments. (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 16,676 Income approach Fall-out factor 0.40% 60.72% 14.79% Value of servicing 0.68% 1.73% 1.09% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 12,925 Income approach Fall-out factor 0.00% 58.38% 12.05% Value of servicing 0.69% 1.73% 1.09% Nonrecurring Fair Value Measurements Certain assets held by the Company are not included in the tables above, but are measured at fair value on a nonrecurring basis. These assets include certain loans held for investment and other real estate owned that are carried at the lower of cost or fair value of the underlying collateral, less the estimated cost to sell. The estimated fair values of real estate collateral are generally based on internal evaluations and appraisals of such collateral, which use the market approach and income approach methodologies. All impaired loans are subject to an internal evaluation completed quarterly by management as part of the allowance process. The fair value of commercial properties are generally based on third-party appraisals that consider recent sales of comparable properties, including their income-generating characteristics, adjusted (generally based on unobservable inputs) to reflect the general assumptions that a market participant would make when analyzing the property for purchase. The Company uses a fair value of collateral technique to apply adjustments to the appraisal value of certain commercial loans held for investment that are collateralized by real estate. During the three months ended March 31, 2018 , the Company recorded adjustments ranging from 0.00% to 35.0% with a weighted average of 10.6% to the appraisal values of certain commercial loans held for investment that are collateralized by real estate. During the three months ended March 31, 2017 , the Company recorded no adjustment to the appraisal values of certain commercial loans held for investment that are collateralized by real estate. The Company uses a fair value of collateral technique to apply adjustments to the stated value of certain commercial loans held for investment that are not collateralized by real estate. During the three months ended March 31, 2018 , the Company applied a range of stated value adjustments of 35.0% to 100.0% , with a weighted average of 66.6% . During the three months ended March 31, 2017 , the Company applied a range of stated value adjustments of 9.4% to 100.0% , with a weighted average of 40.9% . During the three months ended March 31, 2018 and 2017 , the Company did not apply any adjustment to the appraisal value of OREO. Residential properties are generally based on unadjusted third-party appraisals. Factors considered in determining the fair value include geographic sales trends, the value of comparable surrounding properties as well as the condition of the property. These adjustments include management assumptions that are based on the type of collateral dependent loan and may increase or decrease an appraised value. Management adjustments vary significantly depending on the location, physical characteristics and income producing potential of each individual property. The quality and volume of market information available at the time of the appraisal can vary from period-to-period and cause significant changes to the nature and magnitude of the unobservable inputs used. Given these variations, changes in these unobservable inputs are generally not a reliable indicator for how fair value will increase or decrease from period to period. The following tables present assets that had changes in their recorded fair value during the three months ended March 31, 2018 and 2017 and assets held at the end of the respective reporting period. At or for the Three Months Ended March 31, 2018 (in thousands) Fair Value of Assets Held at March 31, 2018 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 607 $ — $ — $ 607 $ (122 ) Total $ 607 $ — $ — $ 607 $ (122 ) At or for the Three Months Ended March 31, 2017 (in thousands) Fair Value of Assets Held at March 31, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,090 $ — $ — $ 2,090 $ (41 ) Other real estate owned (2) 5,989 — — 5,989 — Total $ 8,079 $ — $ — $ 8,079 $ (41 ) (1) Represents the carrying value of loans for which adjustments are based on the fair value of the collateral. (2) Represents other real estate owned where an updated fair value of collateral is used to adjust the carrying amount subsequent to the initial classification as other real estate owned. Fair Value of Financial Instruments The following presents the carrying value, estimated fair value and the levels of the fair value hierarchy for the Company’s financial instruments other than assets and liabilities measured at fair value on a recurring basis. At March 31, 2018 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 66,289 $ 66,289 $ 66,289 $ — $ — Investment securities held to maturity 79,283 78,269 — 78,269 — Loans held for investment 4,752,957 4,699,159 — — 4,699,159 Loans held for sale – transferred from held for investment 28,002 28,002 — — 28,002 Loans held for sale – multifamily and other 20,867 20,867 — 20,867 — Mortgage servicing rights – multifamily 26,042 28,415 — — 28,415 Federal Home Loan Bank stock 41,923 41,923 — 41,923 — Liabilities: Deposits $ 5,048,996 $ 5,048,996 $ — $ 5,048,996 $ — Federal Home Loan Bank advances 851,657 853,562 — 853,562 — Federal funds purchased and securities sold under agreements to repurchase 25,000 25,020 25,020 — — Long-term debt 125,321 107,668 — 107,668 — At December 31, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 72,718 $ 72,718 $ 72,718 $ — $ — Investment securities held to maturity 58,036 58,128 — 58,128 — Loans held for investment 4,500,989 4,497,884 — — 4,497,884 Loans held for sale – multifamily and other 33,589 33,589 — 33,589 — Mortgage servicing rights – multifamily 26,093 28,362 — — 28,362 Federal Home Loan Bank stock 46,639 46,639 — 46,639 — Liabilities: Deposits $ 4,760,952 $ 4,760,952 $ — $ 4,760,952 $ — Federal Home Loan Bank advances 979,201 981,441 — 981,441 — Long-term debt 125,274 108,530 — 108,530 —

Earnings Per Share

Earnings Per Share	3 Months Ended
Earnings Per Share	Mar. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE: The following table summarizes the calculation of earnings per share. Three Months Ended March 31, (in thousands, except share and per share data) 2018 2017 Net income $ 5,866 $ 8,983 Weighted average shares: Basic weighted-average number of common shares outstanding 26,927,464 26,821,396 Dilutive effect of outstanding common stock equivalents (1) 231,536 236,053 Diluted weighted-average number of common stock outstanding 27,159,000 27,057,449 Earnings per share: Basic earnings per share $ 0.22 $ 0.33 Diluted earnings per share $ 0.22 $ 0.33 (1) Excluded from the computation of diluted earnings per share (due to their antidilutive effect) for the three months ended March 31, 2018 were certain stock options and unvested restricted stock issued to key senior management personnel and directors of the Company. The aggregate number of common stock equivalents related to such options and unvested restricted shares, which could potentially be dilutive in future periods, was 53,448 at March 31, 2018 and 141,618 at March 31, 2017

Business Segments

Business Segments	3 Months Ended
Business Segments	Mar. 31, 2018
Segment Reporting [Abstract]
BUSINESS SEGMENTS	BUSINESS SEGMENTS: The Company's business segments are determined based on the products and services provided, as well as the nature of the related business activities and reflect the manner in which financial information is currently evaluated by management. The Company organizes the segments into two lines of business: Commercial and Consumer Banking segment and Mortgage Banking segment. A description of the Company's business segments and the products and services that they provide is as follows. Commercial and Consumer Banking provides diversified financial products and services to our commercial and consumer customers through bank branches, ATMs, and online, mobile and telephone banking. These products and services include deposit products; residential, consumer, business and agricultural portfolio loans; non-deposit investment products; insurance products, and cash management services. We originate construction loans, bridge loans and permanent loans for our portfolio primarily on single family residences, and on office, retail, industrial and multifamily properties. We originate multifamily real estate loans through our Fannie Mae DUS ® business, and after origination those loans are sold to or securitized by Fannie Mae, while the Company generally retains the servicing rights. In addition, through the HomeStreet Commercial Capital division of HomeStreet Bank we originate permanent commercial real estate loans primarily up to $10 million in size, a portion of which we intend to pool and sell into the secondary market. As a part of the HomeStreet Commercial Capital division, we also have a team that specializes in U.S. Small Business Administration ("SBA") lending. This segment also reflects the results for the management of the Company's portfolio of investment securities. Mortgage Banking originates single family residential mortgage loans for sale in the secondary markets and performs mortgage servicing on a substantial portion of such loans. The majority of our mortgage loans are sold to or securitized by Fannie Mae, Freddie Mac or Ginnie Mae, while we retain the right to service these loans. We have become a rated originator and servicer of jumbo loans, allowing us to sell these loans to other securitizers. Additionally, we purchase loans from WMS Series LLC through a correspondent arrangement with that company. We also sell loans on a servicing-released and servicing-retained basis to securitizers and correspondent lenders. A small percentage of our loans are brokered to other lenders. On occasion, we may sell a portion of our MSR portfolio. We manage the loan funding and the interest rate risk associated with the secondary market loan sales and the retained single family mortgage servicing rights within this business segment. Financial highlights by operating segment were as follows. Three Months Ended March 31, 2018 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 3,012 $ 45,448 $ 48,460 Provision for credit losses — 750 750 Noninterest income 53,735 7,096 60,831 Noninterest expense 62,497 38,272 100,769 (Loss) income before income taxes (5,750 ) 13,522 7,772 Income tax (benefit) expense (1,410 ) 3,316 1,906 Net (loss) income $ (4,340 ) $ 10,206 $ 5,866 Total assets $ 783,244 $ 6,140,812 $ 6,924,056 Three Months Ended March 31, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 4,747 $ 40,904 $ 45,651 Noninterest income 65,036 9,425 74,461 Noninterest expense 70,404 36,470 106,874 Loss (income) before income taxes (621 ) 13,859 13,238 Income tax (benefit) expense (312 ) 4,567 4,255 Net (loss) income $ (309 ) $ 9,292 $ 8,983 Total assets $ 817,972 $ 5,583,171 $ 6,401,143 (1) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to the other segment. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of excess liabilities from another segment.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS): The following table shows changes in accumulated other comprehensive income (loss) from unrealized gain (loss) on available-for-sale securities, net of tax. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ (7,122 ) $ (10,412 ) Other comprehensive (loss) income before reclassifications (10,000 ) 1,930 Amounts reclassified from accumulated other comprehensive loss (176 ) (4 ) Net current-period other comprehensive (loss) income (10,176 ) 1,926 Ending balance $ (17,298 ) $ (8,486 ) The following table shows the affected line items in the consolidated statements of operations from reclassifications of unrealized gain (loss) on available-for-sale securities from accumulated other comprehensive income (loss). Affected Line Item in the Consolidated Statements of Operations Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended March 31, (in thousands) 2018 2017 Gain on sale of investment securities available for sale $ 222 $ 6 Income tax expense 46 2 Total, net of tax $ 176 $ 4

Revenue

Revenue	3 Months Ended
Revenue	Mar. 31, 2018
Revenue Recognition [Abstract]
Revenue	REVENUE: On January 1, 2018, the Company adopted ASU No. 2014-09 Revenue from Contracts with Customers ("Topic 606") . We elected to implement using the modified retrospective application, with the cumulative effect recorded as an adjustment to retained earnings at January 31, 2018. Due to immateriality, we had no cumulative effect to record. Since net interest income on financial assets and liabilities are excluded from this guidance, a significant majority of our revenues are not subject to the new guidance. Our revenue streams that fall within the scope of Topic 606 are presented within noninterest income and are, in general, recognized as revenue as we satisfy our obligation to the customer. Most of the Company's contracts that fall within the scope of this guidance are contracts with customers that are cancelable by either party without penalty and are short-termed in nature. These revenues include depositor and other retail and business banking fees, commission income, credit card fees and sales of other real estate owned. For the three months ended March 31, 2018, in scope revenue streams were approximately 2.8% of our total revenues. As this standard is immaterial to our consolidated financial statements, the Company has omitted certain disclosures in ASU 2014-09, including the disaggregation of revenue table. In-scope noninterest revenue streams are discussed below. Depositor and other retail and business banking fees Depositor and other retail banking fees consist of monthly service fees, check orders, and other deposit account related fees. The Company’s performance obligation for these fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Commission Income Commission income primarily consists of revenue received on insurance policies and monthly investment management fees earned where the Company has acted as an intermediary between customers and the insurance carriers or investment advisers. Under Topic 606, the commissions received at the inception of the policy should be deferred and recognized over the course of the policy. The company’s performance obligation for commissions is generally satisfied, and the related revenue generally recognized, over the course of the policy or over the period in which the services are provided, generally monthly. Credit Card Fees The Company offers credit cards to its customers through a third party and earns a fee on each transaction and a fee for each new account activation on a net basis. Revenue is recognized on a one-month lag when cash is received for these fees which does not vary materially from recognizing revenue over the period the services are performed. Sale of Real Estate Owned

Restructuring

Restructuring	3 Months Ended
Restructuring	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
RESTRUCTURING	RESTRUCTURING: In 2017, we i mplemented a restructuring plan in our mortgage banking segment to reduce our operating cost structure and improve efficiency. In 2017, we recorded a total restructuring charge of $3.7 million , consisting of facility-related costs of $3.1 million and severance costs of $648 thousand . The charges are included in the occupancy and the salaries and related costs line items on our consolidated statement of operations for that period. The following table summarizes the restructuring charges, the restructuring costs paid or settled during the first quarter of 2018, and the Company's net remaining liability balance at March 31, 2018 . (in thousands) Facility related costs Personnel related costs Total Balance at December 31, 2017 $ 1,386 $ — $ 1,386 Restructuring charges (recoveries) (291 ) — (291 ) Costs paid or otherwise settled (375 ) — (375 ) Balance at March 31, 2018 $ 720 $ — $ 720

Subsequent Events

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS:

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	The Company’s accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (U.S. GAAP). Inter-company balances and transactions have been eliminated in consolidation. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting periods and related disclosures. These estimates that require application of management's most difficult, subjective or complex judgments often result in the need to make estimates about the effect of matters that are inherently uncertain and may change in future periods.
Recent Accounting Developments	Recent Accounting Developments Tax Reform On December 22, 2017, new federal tax reform legislation was enacted in the United States ("2017 Tax Act"), resulting in significant changes from previous tax law. The new legislation reduced the federal corporate income tax rate to 21% from 35% and makes many other sweeping changes to the tax code, effective January 1, 2018. In the fourth quarter of 2017, we were required to revalue our deferred tax assets and liabilities at the new statutory rate upon enactment. As a result of this revaluation, in 2017, we recognized a one-time, non-cash $23.3 million tax benefit. In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No.2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, or ASU 2018-02. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The update does not have any impact on the underlying ASC 740 guidance that requires the effect of a change in tax law be included in income from continuing operations. The amendments in this update are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted and should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, or ASU 2017-12. This standard better aligns an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. To meet that objective, the amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedge instruments and the hedged item in the financial statements. Adoption for this ASU is required for fiscal years and interim periods beginning after December 15, 2018 and early adoption is permitted. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and other Costs (Subtopic 320-20): Premium Amortization on Purchased Callable Debt Securities, or ASU 2017-08. This standard shortens the amortization period for the premium to the earliest call date to more closely align interest income recorded on bonds held at a premium or a discount with the economics of the underlying instrument. Adoption of ASU 2017-08 is required for fiscal years and interim periods within those fiscal years, beginning after December, 15, 2018, early adoption is permitted. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, or ASU 2017-04, which eliminates Step 2 from the goodwill impairment test. ASU 2017-04 also eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. Adoption of ASU 2017-04 is required for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019 with early adoption being permitted for annual or interim goodwill impairment tests performed on testing dates after January 1, 2017. The Company does not expect the adoption of ASU 2017-04 to have a material impact on its consolidated financial statements. Effective January 1, 2018, we adopted ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This standard will be applied prospectively and will impact how we assess acquisitions (or disposals) of assets or businesses. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, we adopted ASU No. 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash: a Consensus of the FASB Emerging Issues Task Force.” This ASU requires a company’s cash flow statement to explain the changes during a reporting period of the totals for cash, cash equivalents, restricted cash, and restricted cash equivalents, including certain disclosures. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, we adopted ASU 2016-15, Statement of Cash Flows (Topic 230):, Classification of Certain Cash Receipts and Cash Payments . The amendments in this ASU were issued to reduce diversity in how certain cash receipts and payments are presented and classified in the statement of cash flows in eight specific areas. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements. In June 2016, FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delay recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendment affects loans, debt securities, trade receivables, net investments in leases, off-balance-sheet credit exposures, reinsurance receivables, and any other financial asset not excluded from the scope that has the contractual right to receive cash. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more decision useful to users of the financial statements. The amendments in this ASU will be effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is still evaluating the effects this ASU will have on the Company’s consolidated financial statements. The Company has formed an internal committee to oversee the project. Upon adoption, the Company expects a change in the processes and procedures to calculate the allowance for loan losses, 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 new guidance may result in an increase in the allowance for loan losses; however, management is still assessing the magnitude of the increase and its impact on the Company's consolidated financial statements. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. The Company has begun developing and implementing processes to address the amendments of this ASU. On February 25, 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The amendments in this ASU require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. This ASU simplifies the accounting for sale and leaseback transactions. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application was permitted upon issuance of the ASU. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. Management is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. While we have not quantified the impact to our balance sheet, upon the adoption of this ASU we expect to report increased assets and liabilities on our consolidated statement of financial condition as a result of recognizing right-of-use assets and lease liabilities related to these leases and certain equipment under non-cancelable operating lease agreements, which currently are not on our consolidated statement of financial condition. Effective January 1, 2018, we adopted ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU require equity securities to be measured at fair value with changes in the fair value recognized through net income. The amendments allow equity investments that do not have readily determinable fair values to be remeasured at fair value under certain circumstances and require enhanced disclosures about those investments. This ASU simplifies the impairment assessment of equity investments without readily determinable fair values. This ASU also eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the consolidated statement of financial position. The amendments in this ASU require separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. This ASU excludes from net income gains or losses that the entity may not realize because those financial liabilities are not usually transferred or settled at their fair values before maturity. The amendments in this ASU require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the consolidated statement of financial position or in the accompanying notes to the financial statements. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements. Effective January 1, 2018, the company adopted ASU 2014-09, Revenue from Contracts with Customers (Topic 606)
Loans and Leases Receivable	The Company's portfolio of loans held for investment is divided into two
Allowance for Loan and Lease Losses	Management considers the level of allowance for loan losses to be appropriate to cover credit losses inherent within the loans held for investment portfolio as of March 31, 2018
Derivatives and Hedging Activities	To reduce the risk of significant interest rate fluctuations on the value of certain assets and liabilities, such as certain mortgage loans held for sale or Mortgage Servicing Rights ("MSRs"), the Company utilizes derivatives, such as forward sale commitments, futures, option contracts, interest rate swaps and interest rate swaptions as risk management instruments in its hedging strategy. Derivative transactions are measured in terms of notional amount, which is not recorded in the consolidated statements of financial condition. The notional amount is generally not exchanged and is used as the basis for interest and other contractual payments. We held no derivatives designated as a fair value, cash flow or foreign currency hedge instrument at March 31, 2018 or December 31, 2017 . Derivatives are reported at their respective fair values in the other assets or accounts payable and other liabilities line items on the consolidated statements of financial condition, with changes in fair value reflected in current period earnings. As permitted under U.S. GAAP, the Company nets derivative assets and liabilities when a legally enforceable master netting agreement exists between the Company and the derivative counterparty, which are documented under industry standard master agreements and credit support annexes. The Company's master netting agreements provide that following an uncured payment default or other event of default, the non-defaulting party may promptly terminate all transactions between the parties and determine a net amount due to be paid to, or by, the defaulting party. An event of default may also occur under a credit support annex if a party fails to make a collateral delivery (which remains uncured following applicable notice and grace periods). The Company's right of offset requires that master netting agreements are legally enforceable and that the exercise of rights by the non-defaulting party under these agreements will not be stayed or avoided under applicable law upon an event of default, including bankruptcy, insolvency or similar proceeding. The collateral used under the Company's master netting agreements is typically cash, but securities may be used under agreements with certain counterparties. Receivables related to cash collateral that has been paid to counterparties is included in other assets on the Company's consolidated statements of financial condition. Any securities pledged to counterparties as collateral remain on the consolidated statements of financial condition. Refer to Note 2, Investment Securities,
Mortgage Banking Operations	All MSRs are initially measured and recorded at fair value at the time loans are sold. Single family MSRs are subsequently carried at fair value with changes in fair value reflected in earnings in the periods in which the changes occur, while multifamily and SBA MSRs are subsequently carried at the lower of amortized cost or fair value.
Fair Value Measurement	Valuation Processes The Company has various processes and controls in place to ensure that fair value measurements are reasonably estimated. The Finance Committee of the Board provides oversight and approves the Company’s Asset/Liability Management Policy ("ALMP"). The Company's ALMP governs, among other things, the application and control of the valuation models used to measure fair value. On a quarterly basis, the Company’s Asset/Liability Management Committee ("ALCO") and the Finance Committee of the Board review significant modeling variables used to measure the fair value of the Company’s financial instruments, including the significant inputs used in the valuation of single family MSRs. Additionally, ALCO periodically obtains an independent review of the MSR valuation process and procedures, including a review of the model architecture and the valuation assumptions. The Company obtains an MSR valuation from an independent valuation firm monthly to assist with the validation of the fair value estimate and the reasonableness of the assumptions used in measuring fair value. The Company’s real estate valuations are overseen by the Company’s appraisal department. The appraisal department maintains the Company’s appraisal policy and recommends changes to the policy subject to approval by the Company’s Loan Committee and the Credit Committee of the Board. The Company’s appraisals are prepared by independent third-party appraisers and the Company’s internal appraisers. Single family appraisals are generally reviewed by the Company’s single family loan underwriters. Single family appraisals with unusual, higher risk or complex characteristics, as well as commercial real estate appraisals, are reviewed by the Company’s appraisal department. We obtain pricing from third party service providers for determining the fair value of a substantial portion of our investment securities available for sale. We have processes in place to evaluate such third party pricing services to ensure information obtained and valuation techniques used are appropriate. For fair value measurements obtained from third party services, we monitor and review the results to ensure the values are reasonable and in line with market experience for similar classes of securities. While the inputs used by the pricing vendor in determining fair value are not provided, and therefore unavailable for our review, we do perform certain procedures to validate the values received, including comparisons to other sources of valuation (if available), comparisons to other independent market data and a variance analysis of prices by Company personnel that are not responsible for the performance of the investment securities. Estimation of Fair Value Fair value is based on quoted market prices, when available. In cases where a quoted price for an asset or liability is not available, the Company uses valuation models to estimate fair value. These models incorporate inputs such as forward yield curves, loan prepayment assumptions, expected loss assumptions, market volatilities, and pricing spreads utilizing market-based inputs where readily available. The Company believes its valuation methods are appropriate and consistent with those that would be used by other market participants. However, imprecision in estimating unobservable inputs and other factors may result in these fair value measurements not reflecting the amount realized in an actual sale or transfer of the asset or liability in a current market exchange. The following table summarizes the fair value measurement methodologies, including significant inputs and assumptions, and classification of the Company’s assets and liabilities. Asset/Liability class Valuation methodology, inputs and assumptions Classification Cash and cash equivalents Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Investment securities Investment securities available for sale Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 2 recurring fair value measurement. Investment securities held to maturity Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at amortized cost. Loans held for sale Single family loans, excluding loans transferred from held for investment Fair value is based on observable market data, including: • Quoted market prices, where available • Dealer quotes for similar loans • Forward sale commitments Level 2 recurring fair value measurement. When not derived from observable market inputs, fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Estimated fair value classified as Level 3. Loans originated as held for investment and transferred to held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at lower of amortized cost or fair value. Multifamily loans (DUS ® ) and other The sale price is set at the time the loan commitment is made, and as such subsequent changes in market conditions have a very limited effect, if any, on the value of these loans carried on the consolidated statements of financial condition, which are typically sold within 30 days of origination. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 2. Asset/Liability class Valuation methodology, inputs and assumptions Classification Loans held for investment Loans held for investment, excluding collateral dependent loans and loans transferred from held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments For the carrying value of loans see Note 1–Summary of Significant Accounting Policies of the 2017 Annual Report on Form 10-K. Loans held for investment, collateral dependent Fair value is based on appraised value of collateral, which considers sales comparison and income approach methodologies. Adjustments are made for various factors, which may include: • Adjustments for variations in specific property qualities such as location, physical dissimilarities, market conditions at the time of sale, income producing characteristics and other factors • Adjustments to obtain “upon completion” and “upon stabilization” values (e.g., property hold discounts where the highest and best use would require development of a property over time) • Bulk discounts applied for sales costs, holding costs and profit for tract development and certain other properties Carried at lower of amortized cost or fair value of collateral, less the estimated cost to sell. Loans held for investment transferred from loans held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 3 recurring fair value measurement. Mortgage servicing rights Single family MSRs For information on how the Company measures the fair value of its single family MSRs, including key economic assumptions and the sensitivity of fair value to changes in those assumptions, see Note 6 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and SBA Fair value is based on discounted estimated future servicing fees and other revenue, less estimated costs to service the loans. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 3. Derivatives Eurodollar futures Fair value is based on closing exchange prices. Level 1 recurring fair value measurement. Interest rate swaps Interest rate swaptions Forward sale commitments Fair value is based on quoted prices for identical or similar instruments, when available. Level 2 recurring fair value measurement. Asset/Liability class Valuation methodology, inputs and assumptions Classification Interest rate lock and purchase loan commitments The fair value considers several factors including: • Fair value of the underlying loan based on quoted prices in the secondary market, when available. • Value of servicing • Fall-out factor Level 3 recurring fair value measurement. Other real estate owned (“OREO”) Fair value is based on appraised value of collateral, less the estimated cost to sell. See discussion of "loans held for investment, collateral dependent" above for further information on appraisals. Carried at lower of amortized cost or fair value of collateral (Level 3), less the estimated cost to sell. Federal Home Loan Bank stock Carrying value approximates fair value as FHLB stock can only be purchased or redeemed at par value. Carried at par value. Estimated fair value classified as Level 2. Deposits Demand deposits Fair value is estimated as the amount payable on demand at the reporting date. Carried at historical cost. Par value classified as Level 2. Fixed-maturity certificates of deposit Fair value is estimated using discounted cash flows based on market rates currently offered for deposits of similar remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal Home Loan Bank advances Fair value is estimated using discounted cash flows based on rates currently available for advances with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal funds purchased and securities sold under agreements to repurchase Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Long-term debt Fair value is estimated using discounted cash flows based on current lending rates for similar long-term debt instruments with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2.
Revenue	Depositor and other retail and business banking fees Depositor and other retail banking fees consist of monthly service fees, check orders, and other deposit account related fees. The Company’s performance obligation for these fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Commission Income Commission income primarily consists of revenue received on insurance policies and monthly investment management fees earned where the Company has acted as an intermediary between customers and the insurance carriers or investment advisers. Under Topic 606, the commissions received at the inception of the policy should be deferred and recognized over the course of the policy. The company’s performance obligation for commissions is generally satisfied, and the related revenue generally recognized, over the course of the policy or over the period in which the services are provided, generally monthly. Credit Card Fees The Company offers credit cards to its customers through a third party and earns a fee on each transaction and a fee for each new account activation on a net basis. Revenue is recognized on a one-month lag when cash is received for these fees which does not vary materially from recognizing revenue over the period the services are performed. Sale of Real Estate Owned

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
Investment Securities (Tables)	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Amortized cost and fair value of investment securities available for sale	The following table sets forth certain information regarding the amortized cost and fair values of our investment securities available for sale and held to maturity. At March 31, 2018 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 126,626 $ — $ (5,270 ) $ 121,356 Commercial 32,022 22 (638 ) 31,406 Municipal bonds 382,216 1,030 (8,606 ) 374,640 Collateralized mortgage obligations: Residential 175,748 — (6,377 ) 169,371 Commercial 99,897 9 (2,179 ) 97,727 Corporate debt securities 22,740 2 (981 ) 21,761 U.S. Treasury securities 10,904 — (415 ) 10,489 Agency debentures 9,865 — (415 ) 9,450 $ 860,018 $ 1,063 $ (24,881 ) $ 836,200 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,012 $ — $ (258 ) $ 11,754 Commercial 21,875 14 (495 ) 21,394 Collateralized mortgage obligations 17,805 50 (49 ) 17,806 Municipal bonds 27,495 179 (455 ) 27,219 Corporate debt securities 96 — — 96 $ 79,283 $ 243 $ (1,257 ) $ 78,269 At December 31, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 133,654 $ 4 $ (3,568 ) $ 130,090 Commercial 24,024 8 (338 ) 23,694 Municipal bonds 389,117 2,978 (3,643 ) 388,452 Collateralized mortgage obligations: Residential 164,502 3 (4,081 ) 160,424 Commercial 100,001 9 (1,441 ) 98,569 Corporate debt securities 25,146 67 (476 ) 24,737 U.S. Treasury securities 10,899 — (247 ) 10,652 Agency debentures 9,861 — (211 ) 9,650 $ 857,204 $ 3,069 $ (14,005 ) $ 846,268 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,062 $ 35 $ (99 ) $ 11,998 Commercial 21,015 75 (161 ) 20,929 Collateralized mortgage obligations 3,439 — — 3,439 Municipal bonds 21,423 339 (97 ) 21,665 Corporate debt securities 97 — — 97 $ 58,036 $ 449 $ (357 ) $ 58,128
Amortized cost and fair value of held-to-maturity securities	The following table sets forth certain information regarding the amortized cost and fair values of our investment securities available for sale and held to maturity. At March 31, 2018 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 126,626 $ — $ (5,270 ) $ 121,356 Commercial 32,022 22 (638 ) 31,406 Municipal bonds 382,216 1,030 (8,606 ) 374,640 Collateralized mortgage obligations: Residential 175,748 — (6,377 ) 169,371 Commercial 99,897 9 (2,179 ) 97,727 Corporate debt securities 22,740 2 (981 ) 21,761 U.S. Treasury securities 10,904 — (415 ) 10,489 Agency debentures 9,865 — (415 ) 9,450 $ 860,018 $ 1,063 $ (24,881 ) $ 836,200 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,012 $ — $ (258 ) $ 11,754 Commercial 21,875 14 (495 ) 21,394 Collateralized mortgage obligations 17,805 50 (49 ) 17,806 Municipal bonds 27,495 179 (455 ) 27,219 Corporate debt securities 96 — — 96 $ 79,283 $ 243 $ (1,257 ) $ 78,269 At December 31, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 133,654 $ 4 $ (3,568 ) $ 130,090 Commercial 24,024 8 (338 ) 23,694 Municipal bonds 389,117 2,978 (3,643 ) 388,452 Collateralized mortgage obligations: Residential 164,502 3 (4,081 ) 160,424 Commercial 100,001 9 (1,441 ) 98,569 Corporate debt securities 25,146 67 (476 ) 24,737 U.S. Treasury securities 10,899 — (247 ) 10,652 Agency debentures 9,861 — (211 ) 9,650 $ 857,204 $ 3,069 $ (14,005 ) $ 846,268 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,062 $ 35 $ (99 ) $ 11,998 Commercial 21,015 75 (161 ) 20,929 Collateralized mortgage obligations 3,439 — — 3,439 Municipal bonds 21,423 339 (97 ) 21,665 Corporate debt securities 97 — — 97 $ 58,036 $ 449 $ (357 ) $ 58,128
Investment securities in an unrealized loss position	Investment securities available for sale and held to maturity that were in an unrealized loss position are presented in the following tables based on the length of time the individual securities have been in an unrealized loss position. At March 31, 2018 Less than 12 months 12 months or more Total (in thousands) Gross unrealized losses Fair value Gross unrealized losses Fair value Gross unrealized losses Fair value AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (366 ) $ 17,848 $ (4,904 ) $ 103,082 $ (5,270 ) $ 120,930 Commercial (326 ) 15,693 (312 ) 6,603 (638 ) 22,296 Municipal bonds (3,300 ) 186,208 (5,306 ) 128,141 (8,606 ) 314,349 Collateralized mortgage obligations: Residential (1,303 ) 62,441 (5,074 ) 106,930 (6,377 ) 169,371 Commercial (1,040 ) 57,850 (1,139 ) 34,368 (2,179 ) 92,218 Corporate debt securities (152 ) 8,766 (829 ) 12,765 (981 ) 21,531 U.S. Treasury securities (3 ) 997 (411 ) 9,492 (414 ) 10,489 Agency debentures (415 ) 9,450 — — (415 ) 9,450 $ (6,905 ) $ 359,253 $ (17,975 ) $ 401,381 $ (24,880 ) $ 760,634 HELD TO MATURITY Mortgage-backed securities: Residential $ (73 ) $ 5,347 $ (186 ) $ 4,338 $ (259 ) $ 9,685 Commercial (495 ) 18,385 — — (495 ) 18,385 Collateralized mortgage obligations (49 ) 9,351 — — (49 ) 9,351 Municipal bonds (192 ) 10,500 (263 ) 9,237 (455 ) 19,737 $ (809 ) $ 43,583 $ (449 ) $ 13,575 $ (1,258 ) $ 57,158 At December 31, 2017 Less than 12 months 12 months or more Total (in thousands) Gross Fair Gross Fair Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (182 ) $ 18,020 $ (3,386 ) $ 110,878 $ (3,568 ) $ 128,898 Commercial (113 ) 15,265 (225 ) 6,748 (338 ) 22,013 Municipal bonds (760 ) 105,415 (2,883 ) 134,103 (3,643 ) 239,518 Collateralized mortgage obligations: Residential (612 ) 53,721 (3,469 ) 104,555 (4,081 ) 158,276 Commercial (538 ) 57,236 (903 ) 35,225 (1,441 ) 92,461 Corporate debt securities (15 ) 5,272 (461 ) 13,365 (476 ) 18,637 U.S. Treasury securities (3 ) 997 (244 ) 9,655 (247 ) 10,652 Agency debentures (211 ) 9,650 $ — — (211 ) 9,650 $ (2,434 ) $ 265,576 $ (11,571 ) $ 414,529 $ (14,005 ) $ 680,105 HELD TO MATURITY Mortgage-backed securities: Residential $ (13 ) $ 2,662 $ (86 ) $ 4,452 $ (99 ) $ 7,114 Commercial (161 ) 15,900 — — (161 ) 15,900 Collateralized mortgage obligations — 3,439 — — — 3,439 Municipal bonds (3 ) 2,185 (94 ) 9,465 (97 ) 11,650 $ (177 ) $ 24,186 $ (180 ) $ 13,917 $ (357 ) $ 38,103
Computation of weighted average yield using coupon on the fair value	The following tables present the fair value of investment securities available for sale and held to maturity by contractual maturity along with the associated contractual yield for the periods indicated below. Contractual maturities for mortgage-backed securities and collateralized mortgage obligations as presented exclude the effect of expected prepayments. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations before the underlying mortgages mature. The weighted-average yield is computed using the contractual coupon of each security weighted based on the fair value of each security and does not include adjustments to a tax equivalent basis. At March 31, 2018 Within one year After one year through five years After five years through ten years After ten years Total (dollars in thousands) Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield AVAILABLE FOR SALE Mortgage-backed securities: Residential $ — — % $ — — % $ 8,420 1.62 % $ 112,936 2.03 % $ 121,356 2.00 % Commercial — — 14,158 2.08 13,569 2.69 3,679 2.92 31,406 2.44 Municipal bonds 635 2.29 15,948 2.25 34,883 2.71 323,174 3.25 374,640 3.15 Collateralized mortgage obligations: Residential — — — — — — 169,371 2.23 169,371 2.23 Commercial — — 12,303 2.18 20,549 2.46 64,875 2.18 97,727 2.24 Agency debentures — — — — 9,450 2.21 — — 9,450 2.21 Corporate debt securities 1,032 2.10 4,189 3.02 11,738 3.36 4,802 3.52 21,761 3.28 U.S. Treasury securities 997 1.22 — — 9,492 1.73 — — 10,489 1.69 Total available for sale $ 2,664 1.82 % $ 46,598 2.25 % $ 108,101 2.52 % $ 678,837 2.68 % $ 836,200 2.64 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 11,754 2.96 % $ 11,754 2.96 % Commercial — — 11,612 2.21 9,782 2.82 — — 21,394 2.49 Collateralized mortgage obligations — — 9,351 3.30 — — 8,455 2.53 17,806 2.93 Municipal bonds — — 1,812 2.84 4,493 2.16 20,914 3.19 27,219 3.00 Corporate debt securities — — — — — — 96 6.00 96 6.00 Total held to maturity $ — — % $ 22,775 2.70 % $ 14,275 2.61 % $ 41,219 3.00 % $ 78,269 2.84 % At December 31, 2017 Within one year After one year through five years After five years through ten years After ten years Total (dollars in thousands) Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield Fair Value Weighted Average Yield AVAILABLE FOR SALE Mortgage-backed securities: Residential $ — — % $ — — % $ 8,914 1.63 % $ 121,176 1.97 % $ 130,090 1.94 % Commercial — — 15,356 2.07 4,558 2.03 3,780 2.98 23,694 2.21 Municipal bonds 641 2.64 24,456 3.10 39,883 3.25 323,472 3.81 388,452 3.71 Collateralized mortgage obligations: Residential — — — — — — 160,424 2.10 160,424 2.10 Commercial — — 12,550 2.09 21,837 2.38 64,182 2.13 98,569 2.18 Agency debentures — — — — 9,650 2.26 — — 9,650 2.26 Corporate debt securities 1,048 2.11 6,527 2.80 11,033 3.49 6,129 3.57 24,737 3.27 U.S. Treasury securities 997 1.22 — — 9,655 1.76 — — 10,652 1.71 Total available for sale $ 2,686 1.90 % $ 58,889 2.58 % $ 105,530 2.67 % $ 679,163 2.90 % $ 846,268 2.85 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 11,998 2.93 % $ 11,998 2.93 % Commercial — — 6,577 2.15 14,352 2.71 — — 20,929 2.53 Collateralized mortgage obligations — — — — — — 3,439 1.90 3,439 1.90 Municipal bonds — — 1,846 3.35 4,630 2.57 15,189 3.50 21,665 3.28 Corporate debt securities — — — — — — 97 6.00 97 6.00 Total held to maturity $ — — % $ 8,423 2.41 % $ 18,982 2.68 % $ 30,723 3.10 % $ 58,128 2.86 %
Sales of investment securities available for sale	Sales of investment securities available for sale were as follows. Three Months Ended March 31, (in thousands) 2018 2017 Proceeds $ 16,875 $ 2,386 Gross gains 223 25 Gross losses (1 ) (19 )
Carrying value of securities pledged as collateral	The following table summarizes the carrying value of securities pledged as collateral to secure borrowings, public deposits and other purposes as permitted or required by law: (in thousands) At March 31, At December 31, Federal Home Loan Bank to secure borrowings $ 62,282 $ 425,866 Washington and California State to secure public deposits 115,739 118,828 Securities pledged to secure derivatives in a liability position 9,455 7,308 Other securities pledged 5,679 6,089 Total securities pledged as collateral $ 193,155 $ 558,091

Loans and Credit Quality (Table

Loans and Credit Quality (Tables)	3 Months Ended
Loans and Credit Quality (Tables)	Mar. 31, 2018
Receivables [Abstract]
Loans held for investment	Loans held for investment consist of the following: (in thousands) At March 31, At December 31, Consumer loans Single family (1) $ 1,444,193 $ 1,381,366 Home equity and other 470,273 453,489 Total consumer loans 1,914,466 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 633,719 622,782 Multifamily 811,892 728,037 Construction/land development 739,248 687,631 Total commercial real estate loans 2,184,859 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 393,845 391,613 Commercial business 287,367 264,709 Total commercial and industrial loans 681,212 656,322 Loans held for investment before deferred fees, costs and allowance 4,780,537 4,529,627 Net deferred loan fees and costs 16,814 14,686 4,797,351 4,544,313 Allowance for loan losses (39,090 ) (37,847 ) Total loans held for investment $ 4,758,261 $ 4,506,466 (1) Includes $5.3 million and $5.5 million at March 31, 2018 and December 31, 2017 , respectively, of loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations.
Activity in allowance for credit losses	Activity in the allowance for credit losses was as follows. Three Months Ended March 31, (in thousands) 2018 2017 Allowance for credit losses (roll-forward): Beginning balance $ 39,116 $ 35,264 Provision for credit losses 750 — Recoveries, net of charge-offs 580 778 Ending balance $ 40,446 $ 36,042 Components: Allowance for loan losses $ 39,090 $ 34,735 Allowance for unfunded commitments 1,356 1,307 Allowance for credit losses $ 40,446 $ 36,042
Allowance for credit losses by loan portfolio segment and loan class	Activity in the allowance for credit losses by loan portfolio and loan class was as follows. Three Months Ended March 31, 2018 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 9,412 $ — $ 280 $ (484 ) $ 9,208 Home equity and other 7,081 (97 ) 76 (73 ) 6,987 Total consumer loans 16,493 (97 ) 356 (557 ) 16,195 Commercial real estate loans Non-owner occupied commercial real estate 4,755 — — (128 ) 4,627 Multifamily 3,895 — — 756 4,651 Construction/land development 8,677 — 171 311 9,159 Total commercial real estate loans 17,327 — 171 939 18,437 Commercial and industrial loans Owner occupied commercial real estate 2,960 — — 6 2,966 Commercial business 2,336 (1 ) 151 362 2,848 Total commercial and industrial loans 5,296 (1 ) 151 368 5,814 Total allowance for credit losses $ 39,116 $ (98 ) $ 678 $ 750 $ 40,446 Three Months Ended March 31, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,196 $ — $ 333 $ (575 ) $ 7,954 Home equity and other 6,153 (325 ) 286 432 6,546 Total consumer loans 14,349 (325 ) 619 (143 ) 14,500 Commercial real estate loans Non-owner occupied commercial real estate 4,481 — — 218 4,699 Multifamily 3,086 — — 707 3,793 Construction/land development 8,553 — 220 (704 ) 8,069 Total commercial real estate loans 16,120 — 220 221 16,561 Commercial and industrial loans Owner occupied commercial real estate 2,199 — — 138 2,337 Commercial business 2,596 — 264 (216 ) 2,644 Total commercial and industrial loans 4,795 — 264 (78 ) 4,981 Total allowance for credit losses $ 35,264 $ (325 ) $ 1,103 $ — $ 36,042
Recorded investment in loans by Impairment Methodology	The following tables disaggregate our allowance for credit losses and recorded investment in loans by impairment methodology. At March 31, 2018 (in thousands) Allowance: collectively evaluated for impairment Allowance: individually evaluated for impairment Total Loans: collectively evaluated for impairment Loans: individually evaluated for impairment Total Consumer loans Single family $ 9,083 $ 125 $ 9,208 $ 1,370,077 $ 68,828 $ 1,438,905 Home equity and other 6,941 46 6,987 468,990 1,267 470,257 Total consumer loans 16,024 171 16,195 1,839,067 70,095 1,909,162 Commercial loans Non-owner occupied commercial real estate 4,627 — 4,627 633,719 — 633,719 Multifamily 4,651 — 4,651 811,093 799 811,892 Construction/land development 9,159 — 9,159 738,658 590 739,248 Total commercial real estate loans 18,437 — 18,437 2,183,470 1,389 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 2,966 — 2,966 390,991 2,854 393,845 Commercial business 2,710 138 2,848 284,582 2,785 287,367 Total commercial and industrial loans 5,676 138 5,814 675,573 5,639 681,212 Total loans evaluated for impairment 40,137 309 40,446 4,698,110 77,123 4,775,233 Loans held for investment carried at fair value — — — — — 5,304 (1) Total loans held for investment $ 40,137 $ 309 $ 40,446 $ 4,698,110 $ 77,123 $ 4,780,537 At December 31, 2017 (in thousands) Allowance: collectively evaluated for impairment Allowance: individually evaluated for impairment Total Loans: collectively evaluated for impairment Loans: individually evaluated for impairment Total Consumer loans Single family $ 9,188 $ 224 $ 9,412 $ 1,300,939 $ 74,967 $ 1,375,906 Home equity and other 7,036 45 7,081 452,182 1,290 453,472 Total consumer loans 16,224 269 16,493 1,753,121 76,257 1,829,378 Commercial real estate loans Non-owner occupied commercial real estate 4,755 — 4,755 622,782 — 622,782 Multifamily 3,895 — 3,895 727,228 809 728,037 Construction/land development 8,677 — 8,677 687,177 454 687,631 Total commercial real estate loans 17,327 — 17,327 2,037,187 1,263 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 2,960 — 2,960 388,624 2,989 391,613 Commercial business 2,316 20 2,336 261,603 3,106 264,709 Total commercial and industrial loans 5,276 20 5,296 650,227 6,095 656,322 Total loans evaluated for impairment 38,827 289 39,116 4,440,535 83,615 4,524,150 Loans held for investment carried at fair value — — — 5,246 231 5,477 (1) Total loans held for investment $ 38,827 $ 289 $ 39,116 $ 4,445,781 $ 83,846 $ 4,529,627 (1) Comprised of single family loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations.
Impaired loans by loan portfolio segment and loan class	The following tables present impaired loans by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 66,257 $ 67,085 $ — Home equity and other 763 788 — Total consumer loans 67,020 67,873 — Commercial real estate loans Multifamily 799 831 — Construction/land development 590 590 — Total commercial real estate loans 1,389 1,421 — Commercial and industrial loans Owner occupied commercial real estate 2,854 3,165 — Commercial business 1,875 2,560 — Total commercial and industrial loans 4,729 5,725 — $ 73,138 $ 75,019 $ — With an allowance recorded: Consumer loans Single family $ 2,571 $ 2,629 $ 125 Home equity and other 504 504 46 Total consumer loans 3,075 3,133 171 Commercial and industrial loans Commercial business 910 1,332 138 Total commercial and industrial loans 910 1,332 138 $ 3,985 $ 4,465 $ 309 Total: Consumer loans Single family (3) $ 68,828 $ 69,714 $ 125 Home equity and other 1,267 1,292 46 Total consumer loans 70,095 71,006 171 Commercial real estate loans Multifamily 799 831 — Construction/land development 590 590 — Total commercial and industrial loans 1,389 1,421 — Commercial and industrial loans Owner occupied commercial real estate 2,854 3,165 — Commercial business 2,785 3,892 138 Total commercial and industrial loans 5,639 7,057 138 Total impaired loans $ 77,123 $ 79,484 $ 309 (1) Includes partial charge-offs and nonaccrual interest paid and purchase discounts and premiums. (2) Unpaid principal balance does not include partial charge-offs, purchase discounts and premiums or nonaccrual interest paid. Related allowance is calculated on net book balances not unpaid principal balances. (3) Includes $66.3 million in single family performing trouble debt restructurings ("TDRs"). At December 31, 2017 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 71,264 (4 ) $ 72,424 $ — Home equity and other 782 807 — Total consumer loans 72,046 73,231 — Commercial real estate loans Multifamily 809 837 — Construction/land development 454 454 — Total commercial real estate loans 1,263 1,291 — Commercial and industrial loans Owner occupied commercial real estate 2,989 3,288 — Commercial business 2,398 3,094 — Total commercial and industrial loans 5,387 6,382 — $ 78,696 $ 80,904 $ — With an allowance recorded: Consumer loans Single family $ 3,934 $ 4,025 $ 224 Home equity and other 508 508 45 Total consumer loans 4,442 4,533 269 Commercial and industrial loans Commercial business 708 755 20 Total commercial and industrial loans 708 755 20 $ 5,150 $ 5,288 $ 289 Total: Consumer loans Single family (3) $ 75,198 $ 76,449 $ 224 Home equity and other 1,290 1,315 45 Total consumer loans 76,488 77,764 269 Commercial real estate loans Multifamily 809 837 — Construction/land development 454 454 — Total commercial real estate loans 1,263 1,291 — Commercial and industrial loans Owner occupied commercial real estate 2,989 3,288 — Commercial business 3,106 3,849 20 Total commercial and industrial loans 6,095 7,137 20 Total impaired loans $ 83,846 $ 86,192 $ 289 (1) Includes partial charge-offs and nonaccrual interest paid and purchase discounts and premiums. (2) Unpaid principal balance does not include partial charge-offs, purchase discounts and premiums or nonaccrual interest paid. Related allowance is calculated on net book balances not unpaid principal balances. (3) Includes $69.6 million in single family performing TDRs. (4) Includes $231 thousand of fair value option loans.
Average recorded investment in impaired loans	The following tables provide the average recorded investment and interest income recognized on impaired loans by portfolio segment and class. Three Months Ended March 31, 2018 Three Months Ended March 31, 2017 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Consumer loans Single family $ 72,013 $ 653 $ 82,007 $ 750 Home equity and other 1,279 19 1,449 19 Total consumer loans 73,292 672 83,456 769 Commercial real estate loans Non-owner occupied commercial real estate — — 1,225 — Multifamily 804 6 841 6 Construction/land development 522 5 1,540 26 Total commercial real estate loans 1,326 11 3,606 32 Commercial and industrial loans Owner occupied commercial real estate 2,921 36 2,707 59 Commercial business 2,945 37 3,113 47 Total commercial and industrial loans 5,866 73 5,820 106 $ 80,484 $ 756 $ 92,882 $ 907
Designated loan grades by loan portfolio segment and loan class	The following tables summarize designated loan grades by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,422,002 (1) $ 2,812 $ 12,187 $ 7,192 $ 1,444,193 Home equity and other 467,900 147 825 1,401 470,273 1,889,902 2,959 13,012 8,593 1,914,466 Commercial real estate loans Non-owner occupied commercial real estate 622,453 10,068 405 793 633,719 Multifamily 777,176 33,917 503 296 811,892 Construction/land development 715,642 21,927 1,603 76 739,248 2,115,271 65,912 2,511 1,165 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 358,034 21,292 12,277 2,242 393,845 Commercial business 230,732 37,457 16,688 2,490 287,367 588,766 58,749 28,965 4,732 681,212 $ 4,593,939 $ 127,620 $ 44,488 $ 14,490 $ 4,780,537 (1) Includes $5.3 million of loans where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations. At December 31, 2017 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,355,965 (1) $ 2,982 $ 11,328 $ 11,091 $ 1,381,366 Home equity and other 451,194 143 751 1,401 453,489 1,807,159 3,125 12,079 12,492 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 613,181 8,801 — 800 622,782 Multifamily 693,190 34,038 507 302 728,037 Construction/land development 664,025 22,062 1,466 78 687,631 1,970,396 64,901 1,973 1,180 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 361,429 20,949 6,399 2,836 391,613 Commercial business 220,461 39,588 1,959 2,701 264,709 581,890 60,537 8,358 5,537 656,322 $ 4,359,445 $ 128,563 $ 22,410 $ 19,209 $ 4,529,627 (1) Includes $5.5 million
Past due loans by portfolio segment and loan class	The following tables present an aging analysis of past due loans by loan portfolio segment and loan class. At March 31, 2018 (in thousands) 30-59 days past due 60-89 days past due 90 days or more past due Total past due Current Total loans 90 days or more past due and accruing Consumer loans Single family $ 12,636 $ 7,750 $ 45,926 $ 66,312 $ 1,377,881 (1) $ 1,444,193 $ 38,734 (2) Home equity and other 186 28 1,400 1,614 468,659 470,273 — 12,822 7,778 47,326 67,926 1,846,540 1,914,466 38,734 Commercial real estate loans Non-owner occupied commercial real estate — — — — 633,719 633,719 — Multifamily — — 296 296 811,596 811,892 — Construction/land development — — 76 76 739,172 739,248 — — — 372 372 2,184,487 2,184,859 — Commercial and industrial loans Owner occupied commercial real estate — — 626 626 393,219 393,845 — Commercial business 378 — 1,288 1,666 285,701 287,367 — 378 — 1,914 2,292 678,920 681,212 — $ 13,200 $ 7,778 $ 49,612 $ 70,590 $ 4,709,947 $ 4,780,537 $ 38,734 At December 31, 2017 (in thousands) 30-59 days 60-89 days 90 days or Total past Current Total 90 days or Consumer loans Single family $ 10,493 $ 4,437 $ 48,262 $ 63,192 $ 1,318,174 (1) $ 1,381,366 $ 37,171 (2) Home equity and other 750 20 1,404 2,174 451,315 453,489 — 11,243 4,457 49,666 65,366 1,769,489 1,834,855 37,171 Commercial real estate loans Non-owner occupied commercial real estate — — — — 622,782 622,782 — Multifamily — — 302 302 727,735 728,037 — Construction/land development 641 — 78 719 686,912 687,631 — 641 — 380 1,021 2,037,429 2,038,450 — Commercial and industrial loans Owner occupied commercial real estate — — 640 640 390,973 391,613 — Commercial business 377 — 1,526 1,903 262,806 264,709 — 377 — 2,166 2,543 653,779 656,322 — $ 12,261 $ 4,457 $ 52,212 $ 68,930 $ 4,460,697 $ 4,529,627 $ 37,171 (1) Includes $5.3 million and $5.5 million of loans at March 31, 2018 and December 31, 2017 , respectively, where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in our consolidated statements of operations. (2) FHA-insured and VA-guaranteed single family loans that are 90 days or more past due are maintained on accrual status if they are determined to have little to no risk of loss.
Performing and non-performing loan balances by portfolio segment and loan class	The following tables present performing and nonperforming loan balances by loan portfolio segment and loan class. At March 31, 2018 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,437,001 (1) $ 7,192 $ 1,444,193 Home equity and other 468,872 1,401 470,273 1,905,873 8,593 1,914,466 Commercial real estate loans Non-owner occupied commercial real estate 633,719 — 633,719 Multifamily 811,596 296 811,892 Construction/land development 739,172 76 739,248 2,184,487 372 2,184,859 Commercial and industrial loans Owner occupied commercial real estate 393,219 626 393,845 Commercial business 286,079 1,288 287,367 679,298 1,914 681,212 $ 4,769,658 $ 10,879 $ 4,780,537 At December 31, 2017 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,370,275 (1) $ 11,091 $ 1,381,366 Home equity and other 452,085 1,404 453,489 1,822,360 12,495 1,834,855 Commercial real estate loans Non-owner occupied commercial real estate 622,782 — 622,782 Multifamily 727,735 302 728,037 Construction/land development 687,553 78 687,631 2,038,070 380 2,038,450 Commercial and industrial loans Owner occupied commercial real estate 390,973 640 391,613 Commercial business 263,183 1,526 264,709 654,156 2,166 656,322 $ 4,514,586 $ 15,041 $ 4,529,627 (1) Includes $5.3 million and $5.5 million of loans at March 31, 2018 and December 31, 2017 , where a fair value option election was made at the time of origination and, therefore, are carried at fair value with changes recognized in the consolidated statements of operations.
TDR activity by loan portfolio segment and loan class	The following tables present information about TDR activity during the periods presented. Three Months Ended March 31, 2018 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 8 $ 1,685 $ — Payment restructure 25 5,189 — Total consumer Interest rate reduction 8 1,685 — Payment restructure 25 5,189 — 33 6,874 — Commercial and industrial loans Commercial business Payment restructure 2 267 — Total commercial real estate 2 267 — Total loans Interest rate reduction 8 1,685 — Payment restructure 27 5,456 — 35 $ 7,141 $ — Three Months Ended March 31, 2017 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 26 $ 4,823 $ — Payment restructure 12 2,877 — Home equity and other Payment restructure 1 74 — Total consumer Interest rate reduction 26 4,823 — Payment restructure 13 2,951 — 39 7,774 — Commercial and industrial loans Commercial business Payment restructure 1 18 — Total commercial and industrial Payment restructure 1 18 — 1 18 — Total loans Interest rate reduction 26 4,823 — Payment restructure 14 2,969 — 40 $ 7,792 $ —
TDR balances that subsequently re-defaulted	The following table presents loans that were modified as TDRs within the previous 12 months and subsequently re-defaulted during the three months ended March 31, 2018 and 2017 , respectively. A TDR loan is considered re-defaulted when it becomes doubtful that the objectives of the modifications will be met, generally when a consumer loan TDR becomes 60 days or more past due on principal or interest payments or when a commercial loan TDR becomes 90 days or more past due on principal or interest payments. Three Months Ended March 31, 2018 2017 (dollars in thousands) Number of loan relationships that re-defaulted Recorded Number of loan relationships that re-defaulted Recorded Consumer loans Single family 6 $ 884 1 $ 270 6 $ 884 1 $ 270

Deposits (Tables)

Deposits (Tables)	3 Months Ended
Deposits (Tables)	Mar. 31, 2018
Banking and Thrift [Abstract]
Deposit balances, including stated rates	Deposit balances, including stated rates, were as follows. (in thousands) At March 31, At December 31, Noninterest-bearing accounts $ 1,027,285 $ 980,902 NOW accounts, 0.00% to 1.00% at March 31, 2018 and 0.00% to 1.98% at December 31, 2017 480,620 461,349 Statement savings accounts, due on demand, 0.05% to 1.13% at March 31, 2018 and December 31, 2017 295,096 293,858 Money market accounts, due on demand, 0.00% to 1.62% and at March 31, 2018 and 0.00% to 1.80% at December 31, 2017 1,926,153 1,834,154 Certificates of deposit, 0.05% to 3.80% at March 31, 2018 and December 31, 2017 1,319,842 1,190,689 $ 5,048,996 $ 4,760,952
Interest expense on deposits	Interest expense on deposits was as follows. Three Months Ended March 31, (in thousands) 2018 2017 NOW accounts $ 440 $ 477 Statement savings accounts 229 252 Money market accounts 3,459 2,230 Certificates of deposit 3,660 2,664 $ 7,788 $ 5,623
Certificates of deposit outstanding	Certificates of deposit outstanding mature as follows. (in thousands) At March 31, Within one year $ 1,068,216 One to two years 187,776 Two to three years 35,116 Three to four years 7,980 Four to five years 20,437 Thereafter 317 $ 1,319,842

Derivatives and Hedging Activ27

Derivatives and Hedging Activities (Tables)	3 Months Ended
Derivatives and Hedging Activities (Tables)	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional amount and fair value for derivatives	The notional amounts and fair values for derivatives consist of the following. At March 31, 2018 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 1,912,574 $ 3,615 $ (4,150 ) Interest rate swaptions 475,000 217 — Interest rate lock and purchase loan commitments 622,565 16,734 (58 ) Interest rate swaps 1,692,550 15,550 (36,027 ) Eurodollar futures 3,643,000 — — Total derivatives before netting $ 8,345,689 36,116 (40,235 ) Netting adjustment/Cash collateral (1) (12,723 ) 36,732 Carrying value on consolidated statements of financial condition $ 23,393 $ (3,503 ) (1) Includes cash collateral of $24.0 million at March 31, 2018 as part of netting adjustments which primarily consists of collateral transferred by the Company at the initiation of derivative transactions and held by the counterparty as security. At December 31, 2017 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 1,687,658 $ 1,311 $ (1,445 ) Interest rate swaptions 120,000 — — Interest rate lock and purchase loan commitments 472,733 12,950 (25 ) Interest rate swaps 1,869,000 12,171 (23,654 ) Eurodollar futures 3,287,000 — (101 ) Total derivatives before netting $ 7,436,391 26,432 (25,225 ) Netting adjustment/Cash collateral (1) (6,646 ) 23,505 Carrying value on consolidated statements of financial condition $ 19,786 $ (1,720 ) (1) Includes cash collateral of $16.9 million at December 31, 2017 as part of netting adjustments which primarily consists of collateral transferred by the Company at the initiation of derivative transactions and held by the counterparty as security.
Fair value, concentration of risk	The following tables present gross and net information about derivative instruments. At March 31, 2018 (in thousands) Gross fair value Netting adjustments/ Cash collateral (1) Carrying value Securities not offset in consolidated balance sheet (disclosure-only netting) Net amount Derivative assets $ 36,116 $ (12,723 ) $ 23,393 $ — $ 23,393 Derivative liabilities (40,235 ) 36,732 (3,503 ) 2,517 (986 ) At December 31, 2017 (in thousands) Gross fair value Netting adjustments/ Cash collateral (1) Carrying value Securities not offset in consolidated balance sheet (disclosure-only netting) Net amount Derivative assets $ 26,432 $ (6,646 ) $ 19,786 $ — $ 19,786 Derivative liabilities (25,225 ) 23,505 (1,720 ) 1,213 (507 ) (1) Includes cash collateral of $24.0 million and $16.9 million at March 31, 2018 and December 31, 2017
Net gains (losses) recognized on economic hedge derivatives	The following table presents the net gain (loss) recognized on derivatives, including economic hedge derivatives, within the respective line items in the statement of operations for the periods indicated. Three Months Ended March 31, (in thousands) 2018 2017 Recognized in noninterest income: Net gain (loss) on loan origination and sale activities (1) $ 14,125 $ (1,499 ) Loan servicing income (2) (30,977 ) 379 $ (16,852 ) $ (1,120 ) (1) Comprised of interest rate lock commitments ("IRLCs") and forward contracts used as an economic hedge of IRLCs and single family mortgage loans held for sale. (2) Comprised of interest rate swaps, interest rate swaptions and forward contracts used as an economic hedge of single family MSRs.

Mortgage Banking Operations (Ta

Mortgage Banking Operations (Tables)	3 Months Ended
Mortgage Banking Operations (Tables)	Mar. 31, 2018
Mortgage Banking [Abstract]
Mortgage loans on real estate, by loan	Loans held for sale consisted of the following. (in thousands) At March 31, At December 31, Single family $ 451,665 $ 577,313 Multifamily DUS ® (1) 18,566 29,651 Small Business Administration ("SBA") 2,301 3,938 CRE-Non-DUS ® (1)(2) 28,001 — Total loans held for sale $ 500,533 $ 610,902 (1) Fannie Mae Multifamily Delegated Underwriting and Servicing Program (“DUS" ® ) is a registered trademark of Fannie Mae. (2) Loans originated as Held for Investment. Loans sold proceeds consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Single family $ 1,550,724 $ 1,739,737 Multifamily DUS ® (1) 32,976 76,849 SBA 3,692 7,635 CRE-Non-DUS ® (1)(2) — 5,551 (3) Total loans sold $ 1,587,392 $ 1,829,772 (1) Fannie Mae Multifamily DUS ® is a registered trademark of Fannie Mae. (2) Loans originated as Held for Investment. (3) Balance represents termination of participation agreement.
Net gain on loan origination and sale activity	Gain on loan origination and sale activities, including the effects of derivative risk management instruments, consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Single family: Servicing value and secondary market gains (1) $ 41,427 $ 50,538 Loan origination and funding fees 5,445 5,781 Total single family 46,872 56,319 Multifamily DUS ® 1,146 3,360 SBA 301 602 Total gain on loan origination and sale activities $ 48,319 $ 60,281 (1) Comprised of gains and losses on interest rate lock and purchase loan commitments (which considers the value of servicing), single family loans held for sale, forward sale commitments used to economically hedge secondary market activities, and changes in the Company's repurchase liability for loans that have been sold.
Company's portfolio of loans serviced for others	The composition of loans serviced for others that contribute to loan servicing income is presented below at the unpaid principal balance. (in thousands) At March 31, At December 31, Single family U.S. government and agency $ 22,715,153 $ 22,123,710 Other 504,423 507,437 23,219,576 22,631,147 Commercial Multifamily DUS ® 1,323,937 1,311,399 Other 81,436 79,797 1,405,373 1,391,196 Total loans serviced for others $ 24,624,949 $ 24,022,343
Mortgage repurchase losses	The following is a summary of changes in the Company's liability for estimated mortgage repurchase losses. Three Months Ended March 31, (in thousands) 2018 2017 Balance, beginning of period $ 3,015 $ 3,382 Additions (reductions), net of adjustments (1) 610 (360 ) Realized losses (2) (960 ) (159 ) Balance, end of period $ 2,665 $ 2,863 (1) Includes additions for new loan sales and changes in estimated probable future repurchase losses on previously sold loans. (2) Includes principal losses and accrued interest on repurchased loans, “make-whole” settlements, settlements with claimants and certain related expense.
Revenue from mortgage servicing, including the effects of derivative risk management instruments	Revenue from mortgage servicing, including the effects of derivative risk management instruments, consisted of the following. Three Months Ended March 31, (in thousands) 2018 2017 Servicing income, net: Servicing fees and other $ 18,451 $ 16,179 Changes in fair value of single family MSRs due to modeled amortization (1) (8,870 ) (8,520 ) Amortization of multifamily and SBA MSRs (1,049 ) (931 ) 8,532 6,728 Risk management, single family MSRs: Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) 30,019 2,132 Net (loss) gain from derivatives economically hedging MSR (30,977 ) 379 (958 ) 2,511 Loan servicing income $ 7,574 $ 9,239 (1) Represents changes due to collection/realization of expected cash flows and curtailments. (2)
Key economic assumptions used in measuring initial FV of capitalized single family MSRs	Key economic assumptions used in measuring the initial fair value of capitalized single family MSRs were as follows. Three Months Ended March 31, (rates per annum) (1) 2018 2017 Constant prepayment rate ("CPR") (2) 13.61 % 11.91 % Discount rate (3) 10.23 % 10.28 % (1) Weighted average rates for sales during the period for sales of loans with similar characteristics. (2) Represents the expected lifetime average. (3)
Schedule of sensitivity analysis of fair value, transferor's interests in transferred financial assets	Key economic assumptions and the sensitivity of the current fair value for single family MSRs to immediate adverse changes in those assumptions were as follows. (dollars in thousands) At March 31, 2018 Fair value of single family MSR $ 294,062 Expected weighted-average life (in years) 6.79 Constant prepayment rate (1) 10.61 % Impact on fair value of 25 basis points adverse change in interest rates $ (19,363 ) Impact on fair value of 50 basis points adverse change in interest rates $ (40,689 ) Discount rate 10.30 % Impact on fair value of 100 basis points increase $ (11,028 ) Impact on fair value of 200 basis points increase $ (21,277 ) (1)
Changes in single family MSRs measured at fair value	The changes in single family MSRs measured at fair value are as follows. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ 258,560 $ 226,113 Additions and amortization: Originations 14,353 15,918 Purchases — 354 Changes due to modeled amortization (1) (8,870 ) (8,520 ) Net additions and amortization 5,483 7,752 Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) 30,019 2,132 Ending balance $ 294,062 $ 235,997 (1) Represents changes due to collection/realization of expected cash flows and curtailments. (2)
Changes in multifamily MSRs measured at the lower of amortized cost or fair value	The changes in multifamily MSRs measured at the lower of amortized cost or fair value were as follows. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ 26,093 $ 19,747 Origination 934 2,608 Amortization (985 ) (931 ) Ending balance $ 26,042 $ 21,424
Projected amortization expense for the gross carrying value of multifamily MSRs	At March 31, 2018 , the expected weighted-average life of the Company’s multifamily MSRs was 10.32 years . Projected amortization expense for the gross carrying value of multifamily MSRs is estimated as follows. (in thousands) At March 31, 2018 Remainder of 2018 $ 2,707 2019 3,514 2020 3,441 2021 3,232 2022 2,913 2023 and thereafter 10,235 Carrying value of multifamily MSR $ 26,042

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
Fair Value Measurement (Tables)	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair value measurement methodologies	The following table summarizes the fair value measurement methodologies, including significant inputs and assumptions, and classification of the Company’s assets and liabilities. Asset/Liability class Valuation methodology, inputs and assumptions Classification Cash and cash equivalents Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Investment securities Investment securities available for sale Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 2 recurring fair value measurement. Investment securities held to maturity Observable market prices of identical or similar securities are used where available. If market prices are not readily available, value is based on discounted cash flows using the following significant inputs: • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at amortized cost. Loans held for sale Single family loans, excluding loans transferred from held for investment Fair value is based on observable market data, including: • Quoted market prices, where available • Dealer quotes for similar loans • Forward sale commitments Level 2 recurring fair value measurement. When not derived from observable market inputs, fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Estimated fair value classified as Level 3. Loans originated as held for investment and transferred to held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Carried at lower of amortized cost or fair value. Multifamily loans (DUS ® ) and other The sale price is set at the time the loan commitment is made, and as such subsequent changes in market conditions have a very limited effect, if any, on the value of these loans carried on the consolidated statements of financial condition, which are typically sold within 30 days of origination. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 2. Asset/Liability class Valuation methodology, inputs and assumptions Classification Loans held for investment Loans held for investment, excluding collateral dependent loans and loans transferred from held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments For the carrying value of loans see Note 1–Summary of Significant Accounting Policies of the 2017 Annual Report on Form 10-K. Loans held for investment, collateral dependent Fair value is based on appraised value of collateral, which considers sales comparison and income approach methodologies. Adjustments are made for various factors, which may include: • Adjustments for variations in specific property qualities such as location, physical dissimilarities, market conditions at the time of sale, income producing characteristics and other factors • Adjustments to obtain “upon completion” and “upon stabilization” values (e.g., property hold discounts where the highest and best use would require development of a property over time) • Bulk discounts applied for sales costs, holding costs and profit for tract development and certain other properties Carried at lower of amortized cost or fair value of collateral, less the estimated cost to sell. Loans held for investment transferred from loans held for sale Fair value is based on discounted cash flows, which considers the following inputs: • Current lending rates for new loans • Expected prepayment speeds • Estimated credit losses • Market liquidity adjustments Level 3 recurring fair value measurement. Mortgage servicing rights Single family MSRs For information on how the Company measures the fair value of its single family MSRs, including key economic assumptions and the sensitivity of fair value to changes in those assumptions, see Note 6 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and SBA Fair value is based on discounted estimated future servicing fees and other revenue, less estimated costs to service the loans. Carried at lower of amortized cost or fair value. Estimated fair value classified as Level 3. Derivatives Eurodollar futures Fair value is based on closing exchange prices. Level 1 recurring fair value measurement. Interest rate swaps Interest rate swaptions Forward sale commitments Fair value is based on quoted prices for identical or similar instruments, when available. Level 2 recurring fair value measurement. Asset/Liability class Valuation methodology, inputs and assumptions Classification Interest rate lock and purchase loan commitments The fair value considers several factors including: • Fair value of the underlying loan based on quoted prices in the secondary market, when available. • Value of servicing • Fall-out factor Level 3 recurring fair value measurement. Other real estate owned (“OREO”) Fair value is based on appraised value of collateral, less the estimated cost to sell. See discussion of "loans held for investment, collateral dependent" above for further information on appraisals. Carried at lower of amortized cost or fair value of collateral (Level 3), less the estimated cost to sell. Federal Home Loan Bank stock Carrying value approximates fair value as FHLB stock can only be purchased or redeemed at par value. Carried at par value. Estimated fair value classified as Level 2. Deposits Demand deposits Fair value is estimated as the amount payable on demand at the reporting date. Carried at historical cost. Par value classified as Level 2. Fixed-maturity certificates of deposit Fair value is estimated using discounted cash flows based on market rates currently offered for deposits of similar remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal Home Loan Bank advances Fair value is estimated using discounted cash flows based on rates currently available for advances with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2. Federal funds purchased and securities sold under agreements to repurchase Carrying value is a reasonable estimate of fair value based on the short-term nature of the instruments. Estimated fair value classified as Level 1. Long-term debt Fair value is estimated using discounted cash flows based on current lending rates for similar long-term debt instruments with similar terms and remaining time to maturity. Carried at historical cost. Estimated fair value classified as Level 2.
Schedule of fair value hierarchy measurement	The following table presents the levels of the fair value hierarchy for the Company’s assets and liabilities measured at fair value on a recurring basis. (in thousands) Fair Value at March 31, 2018 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 121,356 $ — $ 121,356 $ — Commercial 31,406 — 31,406 — Municipal bonds 374,640 — 374,640 — Collateralized mortgage obligations: Residential 169,371 — 169,371 — Commercial 97,727 — 97,727 — Corporate debt securities 21,761 — 21,761 — U.S. Treasury securities 10,489 — 10,489 — Agency debentures 9,450 — 9,450 — Single family mortgage servicing rights 294,062 — — 294,062 Single family loans held for sale 451,669 — 448,343 3,326 Single family loans held for investment 5,304 — — 5,304 Derivatives Forward sale commitments 3,615 — 3,615 — Interest rate swaptions 217 — 217 — Interest rate lock and purchase loan commitments 16,734 — — 16,734 Interest rate swaps 15,550 — 15,550 — Total assets $ 1,623,351 $ — $ 1,303,925 $ 319,426 Liabilities: Derivatives Forward sale commitments $ 4,150 $ — $ 4,150 $ — Interest rate lock and purchase loan commitments 58 — — 58 Interest rate swaps 36,027 — 36,027 — Total liabilities $ 40,235 $ — $ 40,177 $ 58 (in thousands) Fair Value at December 31, 2017 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 130,090 $ — $ 130,090 $ — Commercial 23,694 — 23,694 — Municipal bonds 388,452 — 388,452 — Collateralized mortgage obligations: Residential 160,424 — 160,424 — Commercial 98,569 — 98,569 — Corporate debt securities 24,737 — 24,737 — U.S. Treasury securities 10,652 — 10,652 — Agency debentures 9,650 9,650 — Single family mortgage servicing rights 258,560 — — 258,560 Single family loans held for sale 577,313 — 575,977 1,336 Single family loans held for investment 5,477 — — 5,477 Derivatives Forward sale commitments 1,311 — 1,311 — Interest rate lock and purchase loan commitments 12,950 — — 12,950 Interest rate swaps 12,172 — 12,172 — Total assets $ 1,714,051 $ — $ 1,435,728 $ 278,323 Liabilities: Derivatives Eurodollar futures $ 101 $ 101 $ — $ — Forward sale commitments 1,445 — 1,445 — Interest rate lock and purchase loan commitments 25 — — 25 Interest rate swaps 23,654 — 23,654 — Total liabilities $ 25,225 $ 101 $ 25,099 $ 25
Schedule of inputs used to measure fair value	The following information presents significant Level 3 unobservable inputs used to measure fair value of single family loans held for investment where fair value option was elected. (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,304 Income approach Implied spread to benchmark interest rate curve 3.31% 5.09% 3.95% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,477 Income approach Implied spread to benchmark interest rate curve 3.61% 4.96% 4.10% The following information presents significant Level 3 unobservable inputs used to measure fair value of certain single family loans held for sale where fair value option was elected. (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 3,326 Income approach Implied spread to benchmark interest rate curve 3.68% 5.00% 4.00% Market price movement from comparable bond 0.14% 0.33% 0.23% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 1,336 Income approach Implied spread to benchmark interest rate curve 3.93% 3.93% 3.93% Market price movement from comparable bond (0.38)% (0.10)% (0.24)% (dollars in thousands) At March 31, 2018 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 16,676 Income approach Fall-out factor 0.40% 60.72% 14.79% Value of servicing 0.68% 1.73% 1.09% (dollars in thousands) At December 31, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 12,925 Income approach Fall-out factor 0.00% 58.38% 12.05% Value of servicing 0.69% 1.73% 1.09%
Schedule of fair value changes and activity for Level 3	The following table presents fair value changes and activity for Level 3 interest rate lock and purchase loan commitments. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance, net $ 12,925 $ 19,219 Total realized/unrealized gains 22,514 35,459 Settlements (18,763 ) (27,542 ) Ending balance, net $ 16,676 $ 27,136 The following tables present fair value changes and activity for Level 3 loans held for sale and loans held for investment. Three Months Ended March 31, 2018 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 1,336 $ 2,045 $ — $ — $ (55 ) $ 3,326 Loans held for investment 5,477 — — — (173 ) 5,304 Three Months Ended March 31, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 41,810 $ 2,799 $ (690 ) $ (3,226 ) $ (363 ) $ 40,330 Loans held for investment 17,988 — 1,206 — (152 ) 19,042
Schedule of assets that had changes in their recorded fair value	The following tables present assets that had changes in their recorded fair value during the three months ended March 31, 2018 and 2017 and assets held at the end of the respective reporting period. At or for the Three Months Ended March 31, 2018 (in thousands) Fair Value of Assets Held at March 31, 2018 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 607 $ — $ — $ 607 $ (122 ) Total $ 607 $ — $ — $ 607 $ (122 ) At or for the Three Months Ended March 31, 2017 (in thousands) Fair Value of Assets Held at March 31, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,090 $ — $ — $ 2,090 $ (41 ) Other real estate owned (2) 5,989 — — 5,989 — Total $ 8,079 $ — $ — $ 8,079 $ (41 ) (1) Represents the carrying value of loans for which adjustments are based on the fair value of the collateral. (2)
Schedule of the fair value hierarchy	The following presents the carrying value, estimated fair value and the levels of the fair value hierarchy for the Company’s financial instruments other than assets and liabilities measured at fair value on a recurring basis. At March 31, 2018 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 66,289 $ 66,289 $ 66,289 $ — $ — Investment securities held to maturity 79,283 78,269 — 78,269 — Loans held for investment 4,752,957 4,699,159 — — 4,699,159 Loans held for sale – transferred from held for investment 28,002 28,002 — — 28,002 Loans held for sale – multifamily and other 20,867 20,867 — 20,867 — Mortgage servicing rights – multifamily 26,042 28,415 — — 28,415 Federal Home Loan Bank stock 41,923 41,923 — 41,923 — Liabilities: Deposits $ 5,048,996 $ 5,048,996 $ — $ 5,048,996 $ — Federal Home Loan Bank advances 851,657 853,562 — 853,562 — Federal funds purchased and securities sold under agreements to repurchase 25,000 25,020 25,020 — — Long-term debt 125,321 107,668 — 107,668 — At December 31, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 72,718 $ 72,718 $ 72,718 $ — $ — Investment securities held to maturity 58,036 58,128 — 58,128 — Loans held for investment 4,500,989 4,497,884 — — 4,497,884 Loans held for sale – multifamily and other 33,589 33,589 — 33,589 — Mortgage servicing rights – multifamily 26,093 28,362 — — 28,362 Federal Home Loan Bank stock 46,639 46,639 — 46,639 — Liabilities: Deposits $ 4,760,952 $ 4,760,952 $ — $ 4,760,952 $ — Federal Home Loan Bank advances 979,201 981,441 — 981,441 — Long-term debt 125,274 108,530 — 108,530 —

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
Earnings Per Share (Tables)	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of earnings per share, basic and diluted	The following table summarizes the calculation of earnings per share. Three Months Ended March 31, (in thousands, except share and per share data) 2018 2017 Net income $ 5,866 $ 8,983 Weighted average shares: Basic weighted-average number of common shares outstanding 26,927,464 26,821,396 Dilutive effect of outstanding common stock equivalents (1) 231,536 236,053 Diluted weighted-average number of common stock outstanding 27,159,000 27,057,449 Earnings per share: Basic earnings per share $ 0.22 $ 0.33 Diluted earnings per share $ 0.22 $ 0.33 (1) Excluded from the computation of diluted earnings per share (due to their antidilutive effect) for the three months ended March 31, 2018 were certain stock options and unvested restricted stock issued to key senior management personnel and directors of the Company. The aggregate number of common stock equivalents related to such options and unvested restricted shares, which could potentially be dilutive in future periods, was 53,448 at March 31, 2018 and 141,618 at March 31, 2017

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
Business Segments (Tables)	Mar. 31, 2018
Segment Reporting [Abstract]
Condensed income statement	Financial highlights by operating segment were as follows. Three Months Ended March 31, 2018 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 3,012 $ 45,448 $ 48,460 Provision for credit losses — 750 750 Noninterest income 53,735 7,096 60,831 Noninterest expense 62,497 38,272 100,769 (Loss) income before income taxes (5,750 ) 13,522 7,772 Income tax (benefit) expense (1,410 ) 3,316 1,906 Net (loss) income $ (4,340 ) $ 10,206 $ 5,866 Total assets $ 783,244 $ 6,140,812 $ 6,924,056 Three Months Ended March 31, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 4,747 $ 40,904 $ 45,651 Noninterest income 65,036 9,425 74,461 Noninterest expense 70,404 36,470 106,874 Loss (income) before income taxes (621 ) 13,859 13,238 Income tax (benefit) expense (312 ) 4,567 4,255 Net (loss) income $ (309 ) $ 9,292 $ 8,983 Total assets $ 817,972 $ 5,583,171 $ 6,401,143 (1) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to the other segment. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of excess liabilities from another segment.

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
Schedule of accumulated other comprehensive income (loss)	The following table shows changes in accumulated other comprehensive income (loss) from unrealized gain (loss) on available-for-sale securities, net of tax. Three Months Ended March 31, (in thousands) 2018 2017 Beginning balance $ (7,122 ) $ (10,412 ) Other comprehensive (loss) income before reclassifications (10,000 ) 1,930 Amounts reclassified from accumulated other comprehensive loss (176 ) (4 ) Net current-period other comprehensive (loss) income (10,176 ) 1,926 Ending balance $ (17,298 ) $ (8,486 )
Reclassification out of accumulated other comprehensive income (loss)	The following table shows the affected line items in the consolidated statements of operations from reclassifications of unrealized gain (loss) on available-for-sale securities from accumulated other comprehensive income (loss). Affected Line Item in the Consolidated Statements of Operations Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended March 31, (in thousands) 2018 2017 Gain on sale of investment securities available for sale $ 222 $ 6 Income tax expense 46 2 Total, net of tax $ 176 $ 4

Restructuring (Tables)

Restructuring (Tables)	3 Months Ended
Restructuring (Tables)	Mar. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring reserve rollforward	The following table summarizes the restructuring charges, the restructuring costs paid or settled during the first quarter of 2018, and the Company's net remaining liability balance at March 31, 2018 . (in thousands) Facility related costs Personnel related costs Total Balance at December 31, 2017 $ 1,386 $ — $ 1,386 Restructuring charges (recoveries) (291 ) — (291 ) Costs paid or otherwise settled (375 ) — (375 ) Balance at March 31, 2018 $ 720 $ — $ 720

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	3 Months Ended
	Dec. 31, 2017USD ($)
Accounting Policies [Abstract]
Deferred income tax benefit related Tax Cuts and Job Acts of 2017	$ 23.3

Investment Securities - Unreali

Investment Securities - Unrealized Gain/Loss on Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
AVAILABLE FOR SALE
Amortized cost	$ 860,018	$ 857,204
Gross unrealized gains	1,063	3,069
Gross unrealized losses	(24,881)	(14,005)
Fair value	836,200	846,268
HELD TO MATURITY
Amortized cost	79,283	58,036
Gross unrealized gains	243	449
Gross unrealized losses	(1,257)	(357)
Fair value	78,269	58,128
Residential mortgage-backed securities [Member]
AVAILABLE FOR SALE
Amortized cost	126,626	133,654
Gross unrealized gains	0	4
Gross unrealized losses	(5,270)	(3,568)
Fair value	121,356	130,090
HELD TO MATURITY
Amortized cost	12,012	12,062
Gross unrealized gains	0	35
Gross unrealized losses	(258)	(99)
Fair value	11,754	11,998
Commercial mortgage-backed securities [Member]
AVAILABLE FOR SALE
Amortized cost	32,022	24,024
Gross unrealized gains	22	8
Gross unrealized losses	(638)	(338)
Fair value	31,406	23,694
HELD TO MATURITY
Amortized cost	21,875	21,015
Gross unrealized gains	14	75
Gross unrealized losses	(495)	(161)
Fair value	21,394	20,929
Collateralized mortgage obligations [Member]
HELD TO MATURITY
Amortized cost	17,805	3,439
Gross unrealized gains	50	0
Gross unrealized losses	(49)	0
Fair value	17,806	3,439
Municipal bonds [Member]
AVAILABLE FOR SALE
Amortized cost	382,216	389,117
Gross unrealized gains	1,030	2,978
Gross unrealized losses	(8,606)	(3,643)
Fair value	374,640	388,452
HELD TO MATURITY
Amortized cost	27,495	21,423
Gross unrealized gains	179	339
Gross unrealized losses	(455)	(97)
Fair value	27,219	21,665
Residential collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Amortized cost	175,748	164,502
Gross unrealized gains	0	3
Gross unrealized losses	(6,377)	(4,081)
Fair value	169,371	160,424
Commercial collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Amortized cost	99,897	100,001
Gross unrealized gains	9	9
Gross unrealized losses	(2,179)	(1,441)
Fair value	97,727	98,569
Corporate debt securities [Member]
AVAILABLE FOR SALE
Amortized cost	22,740	25,146
Gross unrealized gains	2	67
Gross unrealized losses	(981)	(476)
Fair value	21,761	24,737
HELD TO MATURITY
Amortized cost	96	97
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	96	97
US Treasury securities [Member]
AVAILABLE FOR SALE
Amortized cost	10,904	10,899
Gross unrealized gains	0	0
Gross unrealized losses	(415)	(247)
Fair value	10,489	10,652
Agency debentures [Member]
AVAILABLE FOR SALE
Amortized cost	9,865	9,861
Gross unrealized gains	0	0
Gross unrealized losses	(415)	(211)
Fair value	$ 9,450	$ 9,650

Investment Securities - Continu

Investment Securities - Continuous Unrealized Loss on Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	$ (6,905)	$ (2,434)
Less than 12 months, Fair value	359,253	265,576
12 months or more, Gross unrealized losses	(17,975)	(11,571)
12 months or more, Fair value	401,381	414,529
Total, Gross unrealized losses	(24,880)	(14,005)
Total, Fair value	760,634	680,105
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(809)	(177)
Less than 12 months, Fair value	43,583	24,186
12 months or more, Gross unrealized losses	(449)	(180)
12 months or more, Fair value	13,575	13,917
Total, Gross unrealized losses	(1,258)	(357)
Total, Fair value	57,158	38,103
Residential mortgage-backed securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(366)	(182)
Less than 12 months, Fair value	17,848	18,020
12 months or more, Gross unrealized losses	(4,904)	(3,386)
12 months or more, Fair value	103,082	110,878
Total, Gross unrealized losses	(5,270)	(3,568)
Total, Fair value	120,930	128,898
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(73)	(13)
Less than 12 months, Fair value	5,347	2,662
12 months or more, Gross unrealized losses	(186)	(86)
12 months or more, Fair value	4,338	4,452
Total, Gross unrealized losses	(259)	(99)
Total, Fair value	9,685	7,114
Commercial mortgage-backed securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(326)	(113)
Less than 12 months, Fair value	15,693	15,265
12 months or more, Gross unrealized losses	(312)	(225)
12 months or more, Fair value	6,603	6,748
Total, Gross unrealized losses	(638)	(338)
Total, Fair value	22,296	22,013
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(495)	(161)
Less than 12 months, Fair value	18,385	15,900
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(495)	(161)
Total, Fair value	18,385	15,900
Collateralized mortgage obligations [Member]
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(49)	0
Less than 12 months, Fair value	9,351	3,439
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(49)	0
Total, Fair value	9,351	3,439
Municipal bonds [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(3,300)	(760)
Less than 12 months, Fair value	186,208	105,415
12 months or more, Gross unrealized losses	(5,306)	(2,883)
12 months or more, Fair value	128,141	134,103
Total, Gross unrealized losses	(8,606)	(3,643)
Total, Fair value	314,349	239,518
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(192)	(3)
Less than 12 months, Fair value	10,500	2,185
12 months or more, Gross unrealized losses	(263)	(94)
12 months or more, Fair value	9,237	9,465
Total, Gross unrealized losses	(455)	(97)
Total, Fair value	19,737	11,650
Residential collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(1,303)	(612)
Less than 12 months, Fair value	62,441	53,721
12 months or more, Gross unrealized losses	(5,074)	(3,469)
12 months or more, Fair value	106,930	104,555
Total, Gross unrealized losses	(6,377)	(4,081)
Total, Fair value	169,371	158,276
Commercial collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(1,040)	(538)
Less than 12 months, Fair value	57,850	57,236
12 months or more, Gross unrealized losses	(1,139)	(903)
12 months or more, Fair value	34,368	35,225
Total, Gross unrealized losses	(2,179)	(1,441)
Total, Fair value	92,218	92,461
Corporate debt securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(152)	(15)
Less than 12 months, Fair value	8,766	5,272
12 months or more, Gross unrealized losses	(829)	(461)
12 months or more, Fair value	12,765	13,365
Total, Gross unrealized losses	(981)	(476)
Total, Fair value	21,531	18,637
US Treasury securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(3)	(3)
Less than 12 months, Fair value	997	997
12 months or more, Gross unrealized losses	(411)	(244)
12 months or more, Fair value	9,492	9,655
Total, Gross unrealized losses	(414)	(247)
Total, Fair value	10,489	10,652
Agency debentures [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(415)	(211)
Less than 12 months, Fair value	9,450	9,650
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(415)	(211)
Total, Fair value	$ 9,450	$ 9,650

Investment Securities - Weighte

Investment Securities - Weighted Average Yield (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
AVAILABLE FOR SALE
Due within one year, Fair value	$ 2,664	$ 2,686
Due in one through five years, Fair value	46,598	58,889
Due in five through ten years, Fair value	108,101	105,530
Due after ten years, Fair value	678,837	679,163
Total, Fair value	$ 836,200	$ 846,268
Weighted Average Yield, due within one year (as a percent)	1.82%	1.90%
Weighted Average Yield, due in one through five years (as a percent)	2.25%	2.58%
Weighted Average Yield, due in five through ten years (as a percent)	2.52%	2.67%
Weighted Average Yield, due after ten years (as a percent)	2.68%	2.90%
Weighted average yield contractual maturities, Total (as a percent)	2.64%	2.85%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	22,775	8,423
Due in five through ten years, Fair value	14,275	18,982
Due after ten years, Fair value	41,219	30,723
Total, Fair value	$ 78,269	$ 58,128
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	2.70%	2.41%
Weighted Average Yield, due in five through ten years (as a percent)	2.61%	2.68%
Weighted Average Yield, due after ten years (as a percent)	3.00%	3.10%
Weighted average yield contractual maturities, Total (as a percent)	2.84%	2.86%
Residential mortgage-backed securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	8,420	8,914
Due after ten years, Fair value	112,936	121,176
Total, Fair value	$ 121,356	$ 130,090
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	1.62%	1.63%
Weighted Average Yield, due after ten years (as a percent)	2.03%	1.97%
Weighted average yield contractual maturities, Total (as a percent)	2.00%	1.94%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	0	0
Due after ten years, Fair value	11,754	11,998
Total, Fair value	$ 11,754	$ 11,998
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	0.00%	0.00%
Weighted Average Yield, due after ten years (as a percent)	2.96%	2.93%
Weighted average yield contractual maturities, Total (as a percent)	2.96%	2.93%
Commercial mortgage-backed securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	14,158	15,356
Due in five through ten years, Fair value	13,569	4,558
Due after ten years, Fair value	3,679	3,780
Total, Fair value	$ 31,406	$ 23,694
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	2.08%	2.07%
Weighted Average Yield, due in five through ten years (as a percent)	2.69%	2.03%
Weighted Average Yield, due after ten years (as a percent)	2.92%	2.98%
Weighted average yield contractual maturities, Total (as a percent)	2.44%	2.21%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	11,612	6,577
Due in five through ten years, Fair value	9,782	14,352
Due after ten years, Fair value	0	0
Total, Fair value	$ 21,394	$ 20,929
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	2.21%	2.15%
Weighted Average Yield, due in five through ten years (as a percent)	2.82%	2.71%
Weighted Average Yield, due after ten years (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	2.49%	2.53%
Collateralized mortgage obligations [Member]
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	9,351	0
Due in five through ten years, Fair value	0	0
Due after ten years, Fair value	8,455	3,439
Total, Fair value	$ 17,806	$ 3,439
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	3.30%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	0.00%	0.00%
Weighted Average Yield, due after ten years (as a percent)	2.53%	1.90%
Weighted average yield contractual maturities, Total (as a percent)	2.93%	1.90%
Municipal bonds [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 635	$ 641
Due in one through five years, Fair value	15,948	24,456
Due in five through ten years, Fair value	34,883	39,883
Due after ten years, Fair value	323,174	323,472
Total, Fair value	$ 374,640	$ 388,452
Weighted Average Yield, due within one year (as a percent)	2.29%	2.64%
Weighted Average Yield, due in one through five years (as a percent)	2.25%	3.10%
Weighted Average Yield, due in five through ten years (as a percent)	2.71%	3.25%
Weighted Average Yield, due after ten years (as a percent)	3.25%	3.81%
Weighted average yield contractual maturities, Total (as a percent)	3.15%	3.71%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	1,812	1,846
Due in five through ten years, Fair value	4,493	4,630
Due after ten years, Fair value	20,914	15,189
Total, Fair value	$ 27,219	$ 21,665
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	2.84%	3.35%
Weighted Average Yield, due in five through ten years (as a percent)	2.16%	2.57%
Weighted Average Yield, due after ten years (as a percent)	3.19%	3.50%
Weighted average yield contractual maturities, Total (as a percent)	3.00%	3.28%
Residential collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	0	0
Due after ten years, Fair value	169,371	160,424
Total, Fair value	$ 169,371	$ 160,424
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	0.00%	0.00%
Weighted Average Yield, due after ten years (as a percent)	2.23%	2.10%
Weighted average yield contractual maturities, Total (as a percent)	2.23%	2.10%
Commercial collateralized mortgage obligations [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	12,303	12,550
Due in five through ten years, Fair value	20,549	21,837
Due after ten years, Fair value	64,875	64,182
Total, Fair value	$ 97,727	$ 98,569
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	2.18%	2.09%
Weighted Average Yield, due in five through ten years (as a percent)	2.46%	2.38%
Weighted Average Yield, due after ten years (as a percent)	2.18%	2.13%
Weighted average yield contractual maturities, Total (as a percent)	2.24%	2.18%
Agency debentures [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	9,450	9,650
Due after ten years, Fair value	0	0
Total, Fair value	$ 9,450	$ 9,650
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	2.21%	2.26%
Weighted Average Yield, due after ten years (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	2.21%	2.26%
Corporate debt securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 1,032	$ 1,048
Due in one through five years, Fair value	4,189	6,527
Due in five through ten years, Fair value	11,738	11,033
Due after ten years, Fair value	4,802	6,129
Total, Fair value	$ 21,761	$ 24,737
Weighted Average Yield, due within one year (as a percent)	2.10%	2.11%
Weighted Average Yield, due in one through five years (as a percent)	3.02%	2.80%
Weighted Average Yield, due in five through ten years (as a percent)	3.36%	3.49%
Weighted Average Yield, due after ten years (as a percent)	3.52%	3.57%
Weighted average yield contractual maturities, Total (as a percent)	3.28%	3.27%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	0	0
Due after ten years, Fair value	96	97
Total, Fair value	$ 96	$ 97
Weighted Average Yield, due within one year (as a percent)	0.00%	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	0.00%	0.00%
Weighted Average Yield, due after ten years (as a percent)	6.00%	6.00%
Weighted average yield contractual maturities, Total (as a percent)	6.00%	6.00%
US Treasury securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 997	$ 997
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	9,492	9,655
Due after ten years, Fair value	0	0
Total, Fair value	$ 10,489	$ 10,652
Weighted Average Yield, due within one year (as a percent)	1.22%	1.22%
Weighted Average Yield, due in one through five years (as a percent)	0.00%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	1.73%	1.76%
Weighted Average Yield, due after ten years (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	1.69%	1.71%

Investment Securities - Realize

Investment Securities - Realized Gain/Loss on Investment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 16,875	$ 2,386
Gross gains	223	25
Gross losses	$ (1)	$ (19)

Investment Securities - Pledged

Investment Securities - Pledged to Secure Borrowings And Public Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank to secure borrowings	$ 62,282	$ 425,866
Washington and California State to secure public deposits	115,739	118,828
Securities pledged to secure derivatives in a liability position	9,455	7,308
Other securities pledged	5,679	6,089
Total securities pledged as collateral	$ 193,155	$ 558,091

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($)	3 Months Ended
Investment Securities - Narrative (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Security pledged under repurchase agreement	$ 0		$ 0
Tax exempt interest income on available-for-sale securities	$ 2,300,000	$ 2,400,000

Loans and Credit Quality - Narr

Loans and Credit Quality - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)
Financing Receivable, Impaired [Line Items]
Number of portfolio segments \| segment	2
Concentration percentage	10.00%	10.00%
Washington \| Single family [Member]
Financing Receivable, Impaired [Line Items]
Percentage of loan portfolio	14.70%	15.00%
California \| Single family [Member]
Financing Receivable, Impaired [Line Items]
Percentage of loan portfolio	11.10%	10.90%
Federal Home Loan Bank Advances [Member]
Financing Receivable, Impaired [Line Items]
Loans pledged as collateral	$ 1,740	$ 1,810
Federal Reserve Bank Advances [Member]
Financing Receivable, Impaired [Line Items]
Loans pledged as collateral	$ 672.8	$ 663.8

Loans and Credit Quality - Loan

Loans and Credit Quality - Loans Held for Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Loans held for investment
Total loans before fees and costs	$ 4,780,537	$ 4,529,627
Net deferred loan fees and costs	16,814	14,686
Total loans	4,797,351	4,544,313
Allowance for loan losses	(39,090)	(37,847)	$ (34,735)
Loans held for investment	4,758,261	4,506,466
Fair value of loans held for investment	5,304	5,477
Recurring [Member]
Loans held for investment
Fair value of loans held for investment	5,304	5,477
Recurring [Member] \| Level 3 [Member]
Loans held for investment
Fair value of loans held for investment	5,304	5,477
Consumer loans [Member]
Loans held for investment
Total loans before fees and costs	1,914,466	1,834,855
Consumer loans [Member] \| Single family [Member]
Loans held for investment
Total loans before fees and costs	1,444,193	1,381,366
Consumer loans [Member] \| Home equity and other [Member]
Loans held for investment
Total loans before fees and costs	470,273	453,489
Commercial real estate loans [Member]
Loans held for investment
Total loans before fees and costs	2,184,859	2,038,450
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Loans held for investment
Total loans before fees and costs	633,719	622,782
Commercial real estate loans [Member] \| Multifamily [Member]
Loans held for investment
Total loans before fees and costs	811,892	728,037
Commercial real estate loans [Member] \| Construction/land development [Member]
Loans held for investment
Total loans before fees and costs	739,248	687,631
Commercial and industrial loans [Member]
Loans held for investment
Total loans before fees and costs	681,212	656,322
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Loans held for investment
Total loans before fees and costs	393,845	391,613
Commercial and industrial loans [Member] \| Commercial business [Member]
Loans held for investment
Total loans before fees and costs	$ 287,367	$ 264,709

Loans and Credit Quality - Allo

Loans and Credit Quality - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance	$ 39,116	$ 35,264
Provision for credit losses	750	0
Recoveries, net of charge-offs	580	778
Ending Balance	40,446	36,042
Allowance for loan losses			$ 39,090	$ 37,847	$ 34,735
Allowance for unfunded commitments			1,356	1,300	1,307
Allowance for credit losses	$ 40,446	$ 36,042	$ 40,446	$ 39,116	$ 36,042

Loans and Credit Quality - Acti

Loans and Credit Quality - Activity in Allowance for Credit Losses by Loan Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for credit losses by loan portfolio
Beginning Balance	$ 39,116	$ 35,264
Charge-offs	(98)	(325)
Recoveries	678	1,103
Provision for (Reversal of) credit losses	750	0
Ending Balance	40,446	36,042
Consumer loans [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	16,493	14,349
Charge-offs	(97)	(325)
Recoveries	356	619
Provision for (Reversal of) credit losses	(557)	(143)
Ending Balance	16,195	14,500
Consumer loans [Member] \| Single family [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	9,412	8,196
Charge-offs	0	0
Recoveries	280	333
Provision for (Reversal of) credit losses	(484)	(575)
Ending Balance	9,208	7,954
Consumer loans [Member] \| Home equity and other [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	7,081	6,153
Charge-offs	(97)	(325)
Recoveries	76	286
Provision for (Reversal of) credit losses	(73)	432
Ending Balance	6,987	6,546
Commercial real estate loans [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	17,327	16,120
Charge-offs	0	0
Recoveries	171	220
Provision for (Reversal of) credit losses	939	221
Ending Balance	18,437	16,561
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	4,755	4,481
Charge-offs	0	0
Recoveries	0	0
Provision for (Reversal of) credit losses	(128)	218
Ending Balance	4,627	4,699
Commercial real estate loans [Member] \| Multifamily [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	3,895	3,086
Charge-offs	0	0
Recoveries	0	0
Provision for (Reversal of) credit losses	756	707
Ending Balance	4,651	3,793
Commercial real estate loans [Member] \| Construction/land development [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	8,677	8,553
Charge-offs	0	0
Recoveries	171	220
Provision for (Reversal of) credit losses	311	(704)
Ending Balance	9,159	8,069
Commercial and industrial loans [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	5,296	4,795
Charge-offs	(1)	0
Recoveries	151	264
Provision for (Reversal of) credit losses	368	(78)
Ending Balance	5,814	4,981
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	2,960	2,199
Charge-offs	0	0
Recoveries	0	0
Provision for (Reversal of) credit losses	6	138
Ending Balance	2,966	2,337
Commercial and industrial loans [Member] \| Commercial business [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	2,336	2,596
Charge-offs	(1)	0
Recoveries	151	264
Provision for (Reversal of) credit losses	362	(216)
Ending Balance	$ 2,848	$ 2,644

Loans and Credit Quality - Reco

Loans and Credit Quality - Recorded Investment in Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	$ 40,137	$ 38,827
Allowance: individually evaluated for impairment	309	289
Allowance for credit losses	40,446	39,116	$ 36,042	$ 35,264
Loans: collectively evaluated for impairment	4,698,110	4,440,535
Loans: individually evaluated for impairment	77,123	83,615
Total	4,775,233	4,524,150
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	16,024	16,224
Allowance: individually evaluated for impairment	171	269
Allowance for credit losses	16,195	16,493	14,500	14,349
Loans: collectively evaluated for impairment	1,839,067	1,753,121
Loans: individually evaluated for impairment	70,095	76,257
Total	1,909,162	1,829,378
Consumer loans [Member] \| Single family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	9,083	9,188
Allowance: individually evaluated for impairment	125	224
Allowance for credit losses	9,208	9,412	7,954	8,196
Loans: collectively evaluated for impairment	1,370,077	1,300,939
Loans: individually evaluated for impairment	68,828	74,967
Total	1,438,905	1,375,906
Consumer loans [Member] \| Home equity and other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	6,941	7,036
Allowance: individually evaluated for impairment	46	45
Allowance for credit losses	6,987	7,081	6,546	6,153
Loans: collectively evaluated for impairment	468,990	452,182
Loans: individually evaluated for impairment	1,267	1,290
Total	470,257	453,472
Commercial real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	18,437	17,327
Allowance: individually evaluated for impairment	0	0
Allowance for credit losses	18,437	17,327	16,561	16,120
Loans: collectively evaluated for impairment	2,183,470	2,037,187
Loans: individually evaluated for impairment	1,389	1,263
Total	2,184,859	2,038,450
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	4,627	4,755
Allowance: individually evaluated for impairment	0	0
Allowance for credit losses	4,627	4,755	4,699	4,481
Loans: collectively evaluated for impairment	633,719	622,782
Loans: individually evaluated for impairment	0	0
Total	633,719	622,782
Commercial real estate loans [Member] \| Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	4,651	3,895
Allowance: individually evaluated for impairment	0	0
Allowance for credit losses	4,651	3,895	3,793	3,086
Loans: collectively evaluated for impairment	811,093	727,228
Loans: individually evaluated for impairment	799	809
Total	811,892	728,037
Commercial real estate loans [Member] \| Construction/land development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	9,159	8,677
Allowance: individually evaluated for impairment	0	0
Allowance for credit losses	9,159	8,677	8,069	8,553
Loans: collectively evaluated for impairment	738,658	687,177
Loans: individually evaluated for impairment	590	454
Total	739,248	687,631
Commercial and industrial loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	5,676	5,276
Allowance: individually evaluated for impairment	138	20
Allowance for credit losses	5,814	5,296	4,981	4,795
Loans: collectively evaluated for impairment	675,573	650,227
Loans: individually evaluated for impairment	5,639	6,095
Total	681,212	656,322
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	2,966	2,960
Allowance: individually evaluated for impairment	0	0
Allowance for credit losses	2,966	2,960	2,337	2,199
Loans: collectively evaluated for impairment	390,991	388,624
Loans: individually evaluated for impairment	2,854	2,989
Total	393,845	391,613
Commercial and industrial loans [Member] \| Commercial business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	2,710	2,316
Allowance: individually evaluated for impairment	138	20
Allowance for credit losses	2,848	2,336	$ 2,644	$ 2,596
Loans: collectively evaluated for impairment	284,582	261,603
Loans: individually evaluated for impairment	2,785	3,106
Total	287,367	264,709
Fair value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans: collectively evaluated for impairment		5,246
Loans: individually evaluated for impairment		231
Total	5,304	5,477
Reported Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans: collectively evaluated for impairment		4,445,781
Loans: individually evaluated for impairment		83,846
Total	$ 4,780,537	$ 4,529,627

Loans and Credit Quality - Impa

Loans and Credit Quality - Impaired Loans by Loan Class (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	$ 73,138	$ 78,696
Recorded investment with related allowance recorded	3,985	5,150
Total recorded investment	77,123	83,846
Unpaid principal balance with no related allowance recorded	75,019	80,904
Unpaid principal balance with related allowance recorded	4,465	5,288
Total unpaid principal balance	79,484	86,192
Related allowance	309	289
Performing TDRs	66,300	69,600
Consumer loans [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	67,020	72,046
Recorded investment with related allowance recorded	3,075	4,442
Total recorded investment	70,095	76,488
Unpaid principal balance with no related allowance recorded	67,873	73,231
Unpaid principal balance with related allowance recorded	3,133	4,533
Total unpaid principal balance	71,006	77,764
Related allowance	171	269
Consumer loans [Member] \| Single family [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	66,257	71,264
Recorded investment with related allowance recorded	2,571	3,934
Total recorded investment	68,828	75,198
Unpaid principal balance with no related allowance recorded	67,085	72,424
Unpaid principal balance with related allowance recorded	2,629	4,025
Total unpaid principal balance	69,714	76,449
Related allowance	125	224
Consumer loans [Member] \| Single family [Member] \| Fair value [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded		231
Consumer loans [Member] \| Home equity and other [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	763	782
Recorded investment with related allowance recorded	504	508
Total recorded investment	1,267	1,290
Unpaid principal balance with no related allowance recorded	788	807
Unpaid principal balance with related allowance recorded	504	508
Total unpaid principal balance	1,292	1,315
Related allowance	46	45
Commercial real estate loans [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	1,389	1,263
Total recorded investment	1,389	1,263
Unpaid principal balance with no related allowance recorded	1,421	1,291
Total unpaid principal balance	1,421	1,291
Related allowance	0	0
Commercial real estate loans [Member] \| Multifamily [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	799	809
Total recorded investment	799	809
Unpaid principal balance with no related allowance recorded	831	837
Total unpaid principal balance	831	837
Related allowance	0	0
Commercial real estate loans [Member] \| Construction/land development [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	590	454
Total recorded investment	590	454
Unpaid principal balance with no related allowance recorded	590	454
Total unpaid principal balance	590	454
Related allowance	0	0
Commercial and industrial loans [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	4,729	5,387
Recorded investment with related allowance recorded	910	708
Total recorded investment	5,639	6,095
Unpaid principal balance with no related allowance recorded	5,725	6,382
Unpaid principal balance with related allowance recorded	1,332	755
Total unpaid principal balance	7,057	7,137
Related allowance	138	20
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	2,854	2,989
Total recorded investment	2,854	2,989
Unpaid principal balance with no related allowance recorded	3,165	3,288
Total unpaid principal balance	3,165	3,288
Related allowance	0	0
Commercial and industrial loans [Member] \| Commercial business [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	1,875	2,398
Recorded investment with related allowance recorded	910	708
Total recorded investment	2,785	3,106
Unpaid principal balance with no related allowance recorded	2,560	3,094
Unpaid principal balance with related allowance recorded	1,332	755
Total unpaid principal balance	3,892	3,849
Related allowance	$ 138	$ 20

Loans and Credit Quality - Aver

Loans and Credit Quality - Average Recorded Investment in Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average recorded investment	$ 80,484	$ 92,882
Interest Income Recognized	756	907
Consumer loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	73,292	83,456
Interest Income Recognized	672	769
Consumer loans [Member] \| Single family [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	72,013	82,007
Interest Income Recognized	653	750
Consumer loans [Member] \| Home equity and other [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,279	1,449
Interest Income Recognized	19	19
Commercial real estate loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,326	3,606
Interest Income Recognized	11	32
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	0	1,225
Interest Income Recognized	0	0
Commercial real estate loans [Member] \| Multifamily [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	804	841
Interest Income Recognized	6	6
Commercial real estate loans [Member] \| Construction/land development [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	522	1,540
Interest Income Recognized	5	26
Commercial and industrial loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	5,866	5,820
Interest Income Recognized	73	106
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	2,921	2,707
Interest Income Recognized	36	59
Commercial and industrial loans [Member] \| Commercial business [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	2,945	3,113
Interest Income Recognized	$ 37	$ 47

Loans and Credit Quality - Lo48

Loans and Credit Quality - Loan Grades by Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	$ 4,780,537	$ 4,529,627
Fair value of loans held for investment	5,304	5,477
Recurring [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Fair value of loans held for investment	5,304	5,477
Level 3 [Member] \| Recurring [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Fair value of loans held for investment	5,304	5,477
Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	4,593,939	4,359,445
Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	127,620	128,563
Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	44,488	22,410
Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	14,490	19,209
Consumer loans [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,914,466	1,834,855
Consumer loans [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,889,902	1,807,159
Consumer loans [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,959	3,125
Consumer loans [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	13,012	12,079
Consumer loans [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	8,593	12,492
Consumer loans [Member] \| Single family [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,444,193	1,381,366
Consumer loans [Member] \| Single family [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,422,002	1,355,965
Consumer loans [Member] \| Single family [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,812	2,982
Consumer loans [Member] \| Single family [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	12,187	11,328
Consumer loans [Member] \| Single family [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	7,192	11,091
Consumer loans [Member] \| Home equity and other [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	470,273	453,489
Consumer loans [Member] \| Home equity and other [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	467,900	451,194
Consumer loans [Member] \| Home equity and other [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	147	143
Consumer loans [Member] \| Home equity and other [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	825	751
Consumer loans [Member] \| Home equity and other [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,401	1,401
Commercial real estate loans [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,184,859	2,038,450
Commercial real estate loans [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,115,271	1,970,396
Commercial real estate loans [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	65,912	64,901
Commercial real estate loans [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,511	1,973
Commercial real estate loans [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,165	1,180
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	633,719	622,782
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	622,453	613,181
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	10,068	8,801
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	405	0
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	793	800
Commercial real estate loans [Member] \| Multifamily [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	811,892	728,037
Commercial real estate loans [Member] \| Multifamily [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	777,176	693,190
Commercial real estate loans [Member] \| Multifamily [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	33,917	34,038
Commercial real estate loans [Member] \| Multifamily [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	503	507
Commercial real estate loans [Member] \| Multifamily [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	296	302
Commercial real estate loans [Member] \| Construction/land development [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	739,248	687,631
Commercial real estate loans [Member] \| Construction/land development [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	715,642	664,025
Commercial real estate loans [Member] \| Construction/land development [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	21,927	22,062
Commercial real estate loans [Member] \| Construction/land development [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,603	1,466
Commercial real estate loans [Member] \| Construction/land development [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	76	78
Commercial and industrial loans [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	681,212	656,322
Commercial and industrial loans [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	588,766	581,890
Commercial and industrial loans [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	58,749	60,537
Commercial and industrial loans [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	28,965	8,358
Commercial and industrial loans [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	4,732	5,537
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	393,845	391,613
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	358,034	361,429
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	21,292	20,949
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	12,277	6,399
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,242	2,836
Commercial and industrial loans [Member] \| Commercial business [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	287,367	264,709
Commercial and industrial loans [Member] \| Commercial business [Member] \| Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	230,732	220,461
Commercial and industrial loans [Member] \| Commercial business [Member] \| Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	37,457	39,588
Commercial and industrial loans [Member] \| Commercial business [Member] \| Special mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	16,688	1,959
Commercial and industrial loans [Member] \| Commercial business [Member] \| Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	$ 2,490	$ 2,701

Loans and Credit Quality - Agin

Loans and Credit Quality - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 70,590	$ 68,930
Current	4,709,947	4,460,697
Total loans	4,780,537	4,529,627
90-days or more past due and still accruing	38,734	37,171
Fair value of loans held for investment	5,304	5,477
Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,304	5,477
Level 3 [Member] \| Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,304	5,477
30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	13,200	12,261
60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,778	4,457
90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	49,612	52,212
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	67,926	65,366
Current	1,846,540	1,769,489
Total loans	1,914,466	1,834,855
90-days or more past due and still accruing	38,734	37,171
Consumer loans [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	12,822	11,243
Consumer loans [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,778	4,457
Consumer loans [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	47,326	49,666
Consumer loans [Member] \| Single family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	66,312	63,192
Current	1,377,881	1,318,174
Total loans	1,444,193	1,381,366
90-days or more past due and still accruing	38,734	37,171
Consumer loans [Member] \| Single family [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	12,636	10,493
Consumer loans [Member] \| Single family [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,750	4,437
Consumer loans [Member] \| Single family [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	45,926	48,262
Consumer loans [Member] \| Home equity and other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,614	2,174
Current	468,659	451,315
Total loans	470,273	453,489
90-days or more past due and still accruing	0	0
Consumer loans [Member] \| Home equity and other [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	186	750
Consumer loans [Member] \| Home equity and other [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	28	20
Consumer loans [Member] \| Home equity and other [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,400	1,404
Commercial real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	372	1,021
Current	2,184,487	2,037,429
Total loans	2,184,859	2,038,450
90-days or more past due and still accruing	0	0
Commercial real estate loans [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	641
Commercial real estate loans [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	372	380
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Current	633,719	622,782
Total loans	633,719	622,782
90-days or more past due and still accruing	0	0
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	296	302
Current	811,596	727,735
Total loans	811,892	728,037
90-days or more past due and still accruing	0	0
Commercial real estate loans [Member] \| Multifamily [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Multifamily [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Multifamily [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	296	302
Commercial real estate loans [Member] \| Construction/land development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	76	719
Current	739,172	686,912
Total loans	739,248	687,631
90-days or more past due and still accruing	0	0
Commercial real estate loans [Member] \| Construction/land development [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	641
Commercial real estate loans [Member] \| Construction/land development [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial real estate loans [Member] \| Construction/land development [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	76	78
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,292	2,543
Current	678,920	653,779
Total loans	681,212	656,322
90-days or more past due and still accruing	0	0
Commercial and industrial loans [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	378	377
Commercial and industrial loans [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial and industrial loans [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,914	2,166
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	626	640
Current	393,219	390,973
Total loans	393,845	391,613
90-days or more past due and still accruing	0	0
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	626	640
Commercial and industrial loans [Member] \| Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,666	1,903
Current	285,701	262,806
Total loans	287,367	264,709
90-days or more past due and still accruing	0	0
Commercial and industrial loans [Member] \| Commercial business [Member] \| 30 to 59 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	378	377
Commercial and industrial loans [Member] \| Commercial business [Member] \| 60 to 89 days past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial and industrial loans [Member] \| Commercial business [Member] \| 90 days or more past due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 1,288	$ 1,526

Loans and Credit Quality - Perf

Loans and Credit Quality - Performing and Nonaccrual (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	$ 4,769,658	$ 4,514,586
Nonaccrual	10,879	15,041
Total loans held for investment	4,780,537	4,529,627
Fair value of loans held for investment	5,304	5,477
Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,304	5,477
Level 3 [Member] \| Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,304	5,477
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	1,905,873	1,822,360
Nonaccrual	8,593	12,495
Total loans held for investment	1,914,466	1,834,855
Consumer loans [Member] \| Single family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	1,437,001	1,370,275
Nonaccrual	7,192	11,091
Total loans held for investment	1,444,193	1,381,366
Consumer loans [Member] \| Home equity and other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	468,872	452,085
Nonaccrual	1,401	1,404
Total loans held for investment	470,273	453,489
Commercial real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	2,184,487	2,038,070
Nonaccrual	372	380
Total loans held for investment	2,184,859	2,038,450
Commercial real estate loans [Member] \| Non-owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	633,719	622,782
Nonaccrual	0	0
Total loans held for investment	633,719	622,782
Commercial real estate loans [Member] \| Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	811,596	727,735
Nonaccrual	296	302
Total loans held for investment	811,892	728,037
Commercial real estate loans [Member] \| Construction/land development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	739,172	687,553
Nonaccrual	76	78
Total loans held for investment	739,248	687,631
Commercial and industrial loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	679,298	654,156
Nonaccrual	1,914	2,166
Total loans held for investment	681,212	656,322
Commercial and industrial loans [Member] \| Owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	393,219	390,973
Nonaccrual	626	640
Total loans held for investment	393,845	391,613
Commercial and industrial loans [Member] \| Commercial business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	286,079	263,183
Nonaccrual	1,288	1,526
Total loans held for investment	$ 287,367	$ 264,709

Loans and Credit Quality - TDRs

Loans and Credit Quality - TDRs (Details) $ in Thousands	3 Months Ended
Loans and Credit Quality - TDRs (Details) $ in Thousands	Mar. 31, 2018USD ($)loan	Mar. 31, 2017USD ($)loan
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	35	40
Recorded investment - TDR	$ 7,141	$ 7,792
Related charge-offs - TDR	$ 0	$ 0
Interest rate reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	8	26
Recorded investment - TDR	$ 1,685	$ 4,823
Related charge-offs - TDR	$ 0	$ 0
Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	27	14
Recorded investment - TDR	$ 5,456	$ 2,969
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	33	39
Recorded investment - TDR	$ 6,874	$ 7,774
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member] \| Interest rate reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	8	26
Recorded investment - TDR	$ 1,685	$ 4,823
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member] \| Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	25	13
Recorded investment - TDR	$ 5,189	$ 2,951
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member] \| Single family [Member] \| Interest rate reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	8	26
Recorded investment - TDR	$ 1,685	$ 4,823
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member] \| Single family [Member] \| Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	25	12
Recorded investment - TDR	$ 5,189	$ 2,877
Related charge-offs - TDR	$ 0	$ 0
Consumer loans [Member] \| Home equity and other [Member] \| Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan		1
Recorded investment - TDR		$ 74
Related charge-offs - TDR		$ 0
Commercial and industrial loans [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	2	1
Recorded investment - TDR	$ 267	$ 18
Related charge-offs - TDR	$ 0	$ 0
Commercial and industrial loans [Member] \| Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan		1
Recorded investment - TDR		$ 18
Related charge-offs - TDR		$ 0
Commercial and industrial loans [Member] \| Commercial business [Member] \| Payment restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR \| loan	2	1
Recorded investment - TDR	$ 267	$ 18
Related charge-offs - TDR	$ 0	$ 0

Loans and Credit Quality - TDR

Loans and Credit Quality - TDR Re-defaults (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)loan	Mar. 31, 2017USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of days past due for consumer loans TDR to be re-default	60 days
Number of days past due for commercial loans TDR to be re-default	90 days
TDR balances which have subsequently re-defaulted
Number of TDR loan relationships that re-defaulted \| loan	6	1
Recorded investment \| $	$ 884	$ 270
Consumer loans [Member] \| Single family [Member]
TDR balances which have subsequently re-defaulted
Number of TDR loan relationships that re-defaulted \| loan	6	1
Recorded investment \| $	$ 884	$ 270

Deposits - Schedule of Deposit

Deposits - Schedule of Deposit Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deposit balances, including stated rates
Noninterest-bearing accounts	$ 1,027,285	$ 980,902
NOW accounts, 0.00% to 1.00% at March 31, 2018 and 0.00% to 1.98% at December 31, 2017	480,620	461,349
Statement savings accounts, due on demand, 0.05% to 1.13% at March 31, 2018 and December 31, 2017	295,096	293,858
Money market accounts, due on demand, 0.00% to 1.62% and at March 31, 2018 and 0.00% to 1.80% at December 31, 2017	1,926,153	1,834,154
Certificates of deposit, 0.05% to 3.80% at March 31, 2018 and December 31, 2017	1,319,842	1,190,689
Deposits, Total	$ 5,048,996	$ 4,760,952
Maximum [Member]
Short-term Debt [Line Items]
Weighted Average Rate, NOW accounts (as a percent)	1.00%	1.98%
Weighted Average Rate, Statement savings accounts (as a percent)	1.13%	1.13%
Weighted Average Rate, Money market accounts (as a percent)	1.62%	1.80%
Weighted Average Rate, Certificates of deposit (as a percent)	3.80%	3.80%
Minimum [Member]
Short-term Debt [Line Items]
Weighted Average Rate, NOW accounts (as a percent)	0.00%	0.00%
Weighted Average Rate, Statement savings accounts (as a percent)	0.05%	0.05%
Weighted Average Rate, Money market accounts (as a percent)	0.00%	0.00%
Weighted Average Rate, Certificates of deposit (as a percent)	0.05%	0.05%

Deposits - Schedule of Interest

Deposits - Schedule of Interest expense on Deposits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest expense on deposits
NOW accounts	$ 440	$ 477
Statement savings accounts	229	252
Money market accounts	3,459	2,230
Certificates of deposit	3,660	2,664
Interest expense on deposits, Total	$ 7,788	$ 5,623

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Certificates of deposit outstanding
Within one year	$ 1,068,216
One to two years	187,776
Two to three years	35,116
Three to four years	7,980
Four to five years	20,437
Thereafter	317
Total	$ 1,319,842	$ 1,190,689

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Weighted-average interest rate on certificates of deposit (as a percent)	1.28%	1.12%
Aggregate amount of time deposits in denominations of 250,000	$ 86.6	$ 88.8
Brokered deposits	$ 489.7	$ 345.5

Derivatives and Hedging Activ57

Derivatives and Hedging Activities - Fair Value of Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Notional amount	$ 8,345,689	$ 7,436,391
Derivatives before netting, Derivative assets	36,116	26,432
Netting adjustments, Derivative assets	(12,723)	(6,646)
Derivative assets	23,393	19,786
Derivatives before netting, Derivative Liabilities	(40,235)	(25,225)
Netting adjustments, Derivative liabilities	36,732	23,505
Derivative liabilities	(3,503)	(1,720)
Concentration of credit risk, master netting arrangements [Member]
Derivatives, Fair Value [Line Items]
Cash collateral, as part of netting adjustment	24,000	16,900
Forward sale commitments [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,912,574	1,687,658
Derivatives before netting, Derivative assets	3,615	1,311
Derivatives before netting, Derivative Liabilities	(4,150)	(1,445)
Interest rate swaptions [Member]
Derivatives, Fair Value [Line Items]
Notional amount	475,000	120,000
Derivatives before netting, Derivative assets	217	0
Derivatives before netting, Derivative Liabilities	0	0
Interest rate lock and purchase loan commitments [Member]
Derivatives, Fair Value [Line Items]
Notional amount	622,565	472,733
Derivatives before netting, Derivative assets	16,734	12,950
Derivatives before netting, Derivative Liabilities	(58)	(25)
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,692,550	1,869,000
Derivatives before netting, Derivative assets	15,550	12,171
Derivatives before netting, Derivative Liabilities	(36,027)	(23,654)
Eurodollar futures [Member]
Derivatives, Fair Value [Line Items]
Notional amount	3,643,000	3,287,000
Derivatives before netting, Derivative assets	0	0
Derivatives before netting, Derivative Liabilities	$ 0	$ (101)

Derivatives and Hedging Activ58

Derivatives and Hedging Activities - Master Netting Agreements (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Gross fair value, Derivative assets	$ 36,116	$ 26,432
Netting adjustments, Derivative assets	(12,723)	(6,646)
Derivative assets	23,393	19,786
Securities pledged, Derivative assets	0	0
Net amount - Derivative assets	23,393	19,786
Derivatives before netting, Derivative Liabilities	(40,235)	(25,225)
Netting adjustments, Derivative liabilities	36,732	23,505
Derivative liabilities	(3,503)	(1,720)
Securities pledged, Derivative liabilities	2,517	1,213
Net amount, Derivative liabilities	(986)	(507)
Concentration of credit risk, master netting arrangements [Member]
Derivative [Line Items]
Cash collateral, as part of netting adjustment	$ 24,000	$ 16,900

Derivatives and Hedging Activ59

Derivatives and Hedging Activities - Gain (Loss) Recognized in Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Loans [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	$ 14,125	$ (1,499)
Servicing contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	(30,977)	379
Mortgages [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	$ (16,852)	$ (1,120)

Derivatives and Hedging Activ60

Derivatives and Hedging Activities - Narrative (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives designated as a hedging instrument	$ 0	$ 0

Mortgage Banking Operations - L

Mortgage Banking Operations - Loans Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	$ 500,533	$ 610,902
Single family [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	451,665	577,313
Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	18,566	29,651
Small business administration (SBA) [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	2,301	3,938
CRE-Non-DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	$ 28,001	$ 0

Mortgage Banking Operations -62

Mortgage Banking Operations - Loans Sold (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Loans sold	$ 1,587,392	$ 1,829,772
Single family [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	1,550,724	1,739,737
Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	32,976	76,849
SBA [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	3,692	7,635
CRE-Non-DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	$ 0	$ 5,551

Mortgage Banking Operations - G

Mortgage Banking Operations - Gain on Sale (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	$ 48,319	$ 60,281
Single family [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Servicing value and secondary market gains	41,427	50,538
Loan origination and funding fees	5,445	5,781
Net gain on loan origination and sale activities	46,872	56,319
Multifamily DUS [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	1,146	3,360
SBA [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	$ 301	$ 602

Mortgage Banking Operations -64

Mortgage Banking Operations - Loans Serviced for Others (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	$ 24,624,949	$ 24,022,343
Single family [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	23,219,576	22,631,147
Single family [Member] \| U.S. government and agency [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	22,715,153	22,123,710
Single family [Member] \| Single family other [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	504,423	507,437
Commercial loans [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	1,405,373	1,391,196
Commercial loans [Member] \| Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	1,323,937	1,311,399
Commercial loans [Member] \| Other [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	$ 81,436	$ 79,797

Mortgage Banking Operations - M

Mortgage Banking Operations - Mortgage Repurchase Liability (Details) - Representations and warranties reserve for loan receivables [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Repurchase Losses [Roll Forward]
Balance, beginning of period	$ 3,015	$ 3,382
Additions (reductions), net of adjustments	610	(360)
Realized losses	(960)	(159)
Balance, end of period	$ 2,665	$ 2,863

Mortgage Banking Operations - R

Mortgage Banking Operations - Revenue from Mortgage Servicing (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Servicing fees and other	$ 18,451	$ 16,179
Changes in fair value of single family MSRs due to modeled amortization	(8,870)	(8,520)
Amortization of multifamily and SBA MSRs	(1,049)	(931)
Net servicing income	8,532	6,728
Changes in fair value due to changes in model inputs and/or assumptions	30,019	2,132
Mortgage servicing rights, risk management	(958)	2,511
Loan servicing income	7,574	9,239
Servicing contracts [Member]
Mortgage Loans on Real Estate [Line Items]
Net (loss) gain from derivatives economically hedging MSR	$ (30,977)	$ 379

Mortgage Banking Operations - K

Mortgage Banking Operations - Key Economic Assumptions (Details)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Banking [Abstract]
Constant prepayment rate (CPR)	13.61%	11.91%
Discount rate	10.23%	10.28%

Mortgage Banking Operations - S

Mortgage Banking Operations - Sensitivity Analysis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Key economic assumptions and the sensitivity of the current fair value for single family MSRs
Fair value of single family MSR	$ 294,062	$ 258,560
Expected weighted-average life	6 years 9 months 14 days
Constant prepayment rate (as a percent)	10.61%
Impact on fair value of 25 basis points adverse change in interest rates	$ (19,363)
Impact on fair value of 50 basis points adverse change in interest rates	$ (40,689)
Discount rate (as a percent)	10.30%
Impact on fair value of 100 basis points increase	$ (11,028)
Impact on fair value of 200 basis points increase	$ (21,277)

Mortgage Banking Operations -69

Mortgage Banking Operations - Single Family MSR Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 258,560
Changes due to modeled amortization	8,870	$ 8,520
Changes in fair value of MSR due to changes in market inputs and/or model updates	30,019	2,132
Ending balance	294,062
Single family MSRs [Member]
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	258,560	226,113
Originations	14,353	15,918
Purchases	0	354
Changes due to modeled amortization	(8,870)	(8,520)
Net additions and amortization	5,483	7,752
Changes in fair value of MSR due to changes in market inputs and/or model updates	30,019	2,132
Ending balance	$ 294,062	$ 235,997

Mortgage Banking Operations -70

Mortgage Banking Operations - Multifamily MSR Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing Asset at Amortized Value, Balance [Roll Forward]
Beginning balance	$ 26,093	$ 19,747
Origination	934	2,608
Amortization	(985)	(931)
Ending balance	$ 26,042	$ 21,424

Mortgage Banking Operations -71

Mortgage Banking Operations - MSR Projected Amortization (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Projected Amortization Expense [Abstract]
Remainder of 2018	$ 2,707
2,019	3,514
2,020	3,441
2,021	3,232
2,022	2,913
2023 and thereafter	10,235
Carrying value of multifamily MSR	26,042	$ 26,093	$ 21,424	$ 19,747
Multifamily originations [Member]
Projected Amortization Expense [Abstract]
Carrying value of multifamily MSR	$ 26,042

Mortgage Banking Operations - N

Mortgage Banking Operations - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Servicing Advances	$ 4.9	$ 5.3
Multifamily DUS [Member]
Financing Receivable, Impaired [Line Items]
Weighted average life of company's multifamily MSRs	10 years 3 months 25 days
Early buyout loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Receivable, in Ginnie Mae pool	$ 47.9	$ 39.3

Commitments, Guarantees and C73

Commitments, Guarantees and Contingencies - Narrative (Details)	3 Months Ended
	Mar. 31, 2018USD ($)claim	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Loss Contingencies [Line Items]
Unfunded loan commitments	$ 52,300,000		$ 56,900,000
Allowance for unfunded commitments	$ 1,356,000	$ 1,307,000	1,300,000
Number of material claims pending \| claim	0
Representations and warranties reserve for loan receivables [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	$ 23,300,000,000		22,710,000,000
Reserve liability related to mortgage repurchase	2,665,000	2,863,000	3,015,000	$ 3,382,000
Undisbursed construction loan funds [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	737,700,000		706,700,000
Home equity and business banking credit lines [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	483,800,000		456,100,000
Loss sharing relationship [Member]
Loss Contingencies [Line Items]
Reserve liability related to multifamily DUS program	2,000,000		2,000,000
Loss sharing relationship [Member] \| Multifamily [Member]
Loss Contingencies [Line Items]
UPB of loans sold through DUS	1,320,000,000		1,310,000,000
Losses incurred - related to DUS	0	$ 0
Credit risk [Member]
Loss Contingencies [Line Items]
Reserve liability related to mortgage repurchase	$ 2,700,000		$ 3,000,000
Minimum [Member]
Loss Contingencies [Line Items]
Percentage of loss that lender is responsible for on loans sold under loss sharing agreement	5.00%
Maximum [Member]
Loss Contingencies [Line Items]
Percentage of loss that lender is responsible for on loans sold under loss sharing agreement	20.00%

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Fair Value Hierarchy Measurement (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Investment securities available for sale	$ 836,200	$ 846,268
Mortgage servicing rights	294,062	258,560
Fair value of loans held for sale	451,665	577,313
Fair value of loans held for investment	5,304	5,477
Derivative assets	23,393	19,786
Liabilities:
Derivative liabilities	3,503	1,720
Residential mortgage-backed securities [Member]
Assets:
Investment securities available for sale	121,356	130,090
Commercial mortgage-backed securities [Member]
Assets:
Investment securities available for sale	31,406	23,694
Municipal bonds [Member]
Assets:
Investment securities available for sale	374,640	388,452
Corporate debt securities [Member]
Assets:
Investment securities available for sale	21,761	24,737
Agency debentures [Member]
Assets:
Investment securities available for sale	9,450	9,650
Recurring [Member]
Assets:
Mortgage servicing rights	294,062	258,560
Fair value of loans held for sale	451,669	577,313
Fair value of loans held for investment	5,304	5,477
Total assets	1,623,351	1,714,051
Liabilities:
Total liabilities	40,235	25,225
Recurring [Member] \| Eurodollar futures [Member]
Liabilities:
Derivative liabilities		101
Recurring [Member] \| Forward sale commitments [Member]
Assets:
Derivative assets	3,615	1,311
Liabilities:
Derivative liabilities	4,150	1,445
Recurring [Member] \| Interest rate swaptions [Member]
Assets:
Derivative assets	217
Recurring [Member] \| Interest rate lock and purchase loan commitments [Member]
Assets:
Derivative assets	16,734	12,950
Liabilities:
Derivative liabilities	58	25
Recurring [Member] \| Interest rate swaps [Member]
Assets:
Derivative assets	15,550	12,172
Liabilities:
Derivative liabilities	36,027	23,654
Recurring [Member] \| Residential mortgage-backed securities [Member]
Assets:
Investment securities available for sale	121,356	130,090
Recurring [Member] \| Commercial mortgage-backed securities [Member]
Assets:
Investment securities available for sale	31,406	23,694
Recurring [Member] \| Municipal bonds [Member]
Assets:
Investment securities available for sale	374,640	388,452
Recurring [Member] \| Collateralized mortgage obligations residential [Member]
Assets:
Investment securities available for sale	169,371	160,424
Recurring [Member] \| Collateralized mortgage obligations commercial [Member]
Assets:
Investment securities available for sale	97,727	98,569
Recurring [Member] \| Corporate debt securities [Member]
Assets:
Investment securities available for sale	21,761	24,737
Recurring [Member] \| US treasury securities [Member]
Assets:
Investment securities available for sale	10,489	10,652
Recurring [Member] \| Agency debentures [Member]
Assets:
Investment securities available for sale	9,450	9,650
Level 1 [Member] \| Recurring [Member]
Assets:
Mortgage servicing rights	0	0
Fair value of loans held for sale	0	0
Fair value of loans held for investment	0	0
Total assets	0	0
Liabilities:
Total liabilities	0	101
Level 1 [Member] \| Recurring [Member] \| Eurodollar futures [Member]
Liabilities:
Derivative liabilities		101
Level 1 [Member] \| Recurring [Member] \| Forward sale commitments [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 [Member] \| Recurring [Member] \| Interest rate swaptions [Member]
Assets:
Derivative assets	0
Level 1 [Member] \| Recurring [Member] \| Interest rate lock and purchase loan commitments [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 [Member] \| Recurring [Member] \| Interest rate swaps [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 1 [Member] \| Recurring [Member] \| Residential mortgage-backed securities [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Commercial mortgage-backed securities [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Municipal bonds [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Collateralized mortgage obligations residential [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Collateralized mortgage obligations commercial [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Corporate debt securities [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| US treasury securities [Member]
Assets:
Investment securities available for sale	0	0
Level 1 [Member] \| Recurring [Member] \| Agency debentures [Member]
Assets:
Investment securities available for sale	0
Level 2 [Member] \| Recurring [Member]
Assets:
Mortgage servicing rights	0	0
Fair value of loans held for sale	448,343	575,977
Fair value of loans held for investment	0	0
Total assets	1,303,925	1,435,728
Liabilities:
Total liabilities	40,177	25,099
Level 2 [Member] \| Recurring [Member] \| Eurodollar futures [Member]
Liabilities:
Derivative liabilities		0
Level 2 [Member] \| Recurring [Member] \| Forward sale commitments [Member]
Assets:
Derivative assets	3,615	1,311
Liabilities:
Derivative liabilities	4,150	1,445
Level 2 [Member] \| Recurring [Member] \| Interest rate swaptions [Member]
Assets:
Derivative assets	217
Level 2 [Member] \| Recurring [Member] \| Interest rate lock and purchase loan commitments [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 2 [Member] \| Recurring [Member] \| Interest rate swaps [Member]
Assets:
Derivative assets	15,550	12,172
Liabilities:
Derivative liabilities	36,027	23,654
Level 2 [Member] \| Recurring [Member] \| Residential mortgage-backed securities [Member]
Assets:
Investment securities available for sale	121,356	130,090
Level 2 [Member] \| Recurring [Member] \| Commercial mortgage-backed securities [Member]
Assets:
Investment securities available for sale	31,406	23,694
Level 2 [Member] \| Recurring [Member] \| Municipal bonds [Member]
Assets:
Investment securities available for sale	374,640	388,452
Level 2 [Member] \| Recurring [Member] \| Collateralized mortgage obligations residential [Member]
Assets:
Investment securities available for sale	169,371	160,424
Level 2 [Member] \| Recurring [Member] \| Collateralized mortgage obligations commercial [Member]
Assets:
Investment securities available for sale	97,727	98,569
Level 2 [Member] \| Recurring [Member] \| Corporate debt securities [Member]
Assets:
Investment securities available for sale	21,761	24,737
Level 2 [Member] \| Recurring [Member] \| US treasury securities [Member]
Assets:
Investment securities available for sale	10,489	10,652
Level 2 [Member] \| Recurring [Member] \| Agency debentures [Member]
Assets:
Investment securities available for sale	9,450	9,650
Level 3 [Member] \| Recurring [Member]
Assets:
Mortgage servicing rights	294,062	258,560
Fair value of loans held for sale	3,326	1,336
Fair value of loans held for investment	5,304	5,477
Total assets	319,426	278,323
Liabilities:
Total liabilities	58	25
Level 3 [Member] \| Recurring [Member] \| Eurodollar futures [Member]
Liabilities:
Derivative liabilities		0
Level 3 [Member] \| Recurring [Member] \| Forward sale commitments [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 3 [Member] \| Recurring [Member] \| Interest rate swaptions [Member]
Assets:
Derivative assets	0
Level 3 [Member] \| Recurring [Member] \| Interest rate lock and purchase loan commitments [Member]
Assets:
Derivative assets	16,734	12,950
Liabilities:
Derivative liabilities	58	25
Level 3 [Member] \| Recurring [Member] \| Interest rate swaps [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Level 3 [Member] \| Recurring [Member] \| Residential mortgage-backed securities [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Commercial mortgage-backed securities [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Municipal bonds [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Collateralized mortgage obligations residential [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Collateralized mortgage obligations commercial [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Corporate debt securities [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| US treasury securities [Member]
Assets:
Investment securities available for sale	0	0
Level 3 [Member] \| Recurring [Member] \| Agency debentures [Member]
Assets:
Investment securities available for sale	$ 0	$ 0

Fair Value Measurement - Sche75

Fair Value Measurement - Schedule of Single Family Loans Held for Sale Measure Using Level 3 Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment, fair value option	$ 5,304		$ 5,477
Loans held for sale, fair value option	$ 451,665		577,313
Market price movement from comparable bond (as a percent)		0.00%
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Market price movement from comparable bond (as a percent)	0.00%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Market price movement from comparable bond (as a percent)	35.00%
Weighted average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Market price movement from comparable bond (as a percent)	10.60%
Recurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment, fair value option	$ 5,304		5,477
Loans held for sale, fair value option	451,669		577,313
Recurring [Member] \| Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment, fair value option	5,304		5,477
Loans held for sale, fair value option	$ 3,326		$ 1,336
Recurring [Member] \| Level 3 [Member] \| Loans held for investment [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	3.31%		3.61%
Recurring [Member] \| Level 3 [Member] \| Loans held for investment [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	5.09%		4.96%
Recurring [Member] \| Level 3 [Member] \| Loans held for investment [Member] \| Weighted average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	3.95%		4.10%
Recurring [Member] \| Level 3 [Member] \| Loans held for sale [Member] \| Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	3.68%		3.93%
Market price movement from comparable bond (as a percent)	0.14%		(0.38%)
Recurring [Member] \| Level 3 [Member] \| Loans held for sale [Member] \| Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	5.00%		3.93%
Market price movement from comparable bond (as a percent)	0.33%		(0.10%)
Recurring [Member] \| Level 3 [Member] \| Loans held for sale [Member] \| Weighted average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied spread to benchmark interest rate curve (as a percent)	4.00%		3.93%
Market price movement from comparable bond (as a percent)	0.23%		(0.24%)

Fair Value Measurement - Sche76

Fair Value Measurement - Schedule of Fair Value Changes and Activity for Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Loans held for sale [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	$ 1,336	$ 41,810
Additions	2,045	2,799
Transfers	0	(690)
Settlements	0	(3,226)
Realized/unrealized gains (losses)	(55)	(363)
Ending balance	3,326	40,330
Loans held for investment [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	5,477	17,988
Additions	0	0
Transfers	0	1,206
Settlements	0	0
Realized/unrealized gains (losses)	(173)	(152)
Ending balance	5,304	19,042
Interest rate lock and purchase loan commitments [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	12,925	19,219
Settlements	(18,763)	(27,542)
Realized/unrealized gains (losses)	22,514	35,459
Ending balance	$ 16,676	$ 27,136

Fair Value Measurement - Sche77

Fair Value Measurement - Schedule of Interest Rate Lock and Purchase Loan Commitments Fair Value Measure Using Level 3 Unobservable Inputs (Details) - Interest rate lock and purchase loan commitments [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate lock and purchase loan commitments, net	$ 16,676	$ 12,925	$ 27,136	$ 19,219
Minimum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	0.40%	0.00%
Fair value inputs, initial value of servicing	0.68%	0.69%
Maximum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	60.72%	58.38%
Fair value inputs, initial value of servicing	1.73%	1.73%
Weighted average [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	14.79%	12.05%
Fair value inputs, initial value of servicing	1.09%	1.09%

Fair Value Measurement - FV Uno

Fair Value Measurement - FV Unobservable Inputs - Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	$ 836,200		$ 846,268
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis [Abstract]
Gains (losses) on loans held for investment	(124)	$ 157
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	607	2,090
Other real estate owned		5,989
Total	607	8,079
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis [Abstract]
Gains (losses) on loans held for investment	(122)	(41)
Gains (losses) on other real estate owned		0
Total gains (losses)	(122)	(41)
Nonrecurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0
Other real estate owned		0
Total	0	0
Nonrecurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0
Other real estate owned		0
Total	0	0
Nonrecurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	607	2,090
Other real estate owned		5,989
Total	$ 607	$ 8,079

Fair Value Measurement - FV of

Fair Value Measurement - FV of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Investment securities held to maturity	$ 78,269	$ 58,128
Fair value of loans held for investment	5,304	5,477
Loans held for sale, fair value option	451,665	577,313
Mortgage servicing rights	294,062	258,560
Liabilities:
Federal funds purchased and securities sold under agreements to repurchase	25,000	0
Carrying value [Member]
Assets:
Cash and cash equivalents	66,289	72,718
Investment securities held to maturity	79,283	58,036
Fair value of loans held for investment	4,752,957	4,500,989
Loans held for sale - transferred from held for investment	28,002
Federal Home Loan Bank Stock	41,923	46,639
Liabilities:
Deposits	5,048,996	4,760,952
Federal Home Loan Bank advances	851,657	979,201
Federal funds purchased and securities sold under agreements to repurchase	25,000
Long-term debt	125,321	125,274
Fair value [Member]
Assets:
Cash and cash equivalents	66,289	72,718
Investment securities held to maturity	78,269	58,128
Fair value of loans held for investment	4,699,159	4,497,884
Loans held for sale - transferred from held for investment	28,002
Federal Home Loan Bank Stock	41,923	46,639
Liabilities:
Federal Home Loan Bank advances	853,562	981,441
Federal funds purchased and securities sold under agreements to repurchase	25,020
Long-term debt	107,668	108,530
Level 1 [Member] \| Fair value [Member]
Assets:
Cash and cash equivalents	66,289	72,718
Investment securities held to maturity	0	0
Fair value of loans held for investment	0	0
Loans held for sale - transferred from held for investment	0
Federal Home Loan Bank Stock	0	0
Liabilities:
Federal Home Loan Bank advances	0	0
Federal funds purchased and securities sold under agreements to repurchase	25,020
Long-term debt	0	0
Level 2 [Member] \| Fair value [Member]
Assets:
Cash and cash equivalents	0	0
Investment securities held to maturity	78,269	58,128
Fair value of loans held for investment	0	0
Loans held for sale - transferred from held for investment	0
Federal Home Loan Bank Stock	41,923	46,639
Liabilities:
Deposits		4,760,952
Federal Home Loan Bank advances	853,562	981,441
Federal funds purchased and securities sold under agreements to repurchase	0
Long-term debt	107,668	108,530
Level 3 [Member] \| Fair value [Member]
Assets:
Cash and cash equivalents	0	0
Investment securities held to maturity	0	0
Fair value of loans held for investment	4,699,159	4,497,884
Loans held for sale - transferred from held for investment	28,002
Federal Home Loan Bank Stock	0	0
Liabilities:
Deposits	0	0
Federal Home Loan Bank advances	0	0
Federal funds purchased and securities sold under agreements to repurchase	0
Long-term debt	0	0
Multifamily [Member] \| Carrying value [Member]
Assets:
Loans held for sale, fair value option	20,867	33,589
Mortgage servicing rights	26,042	26,093
Multifamily [Member] \| Fair value [Member]
Assets:
Loans held for sale, fair value option	20,867	33,589
Mortgage servicing rights	28,415	28,362
Multifamily [Member] \| Level 1 [Member] \| Fair value [Member]
Assets:
Loans held for sale, fair value option	0	0
Mortgage servicing rights	0	0
Multifamily [Member] \| Level 2 [Member] \| Fair value [Member]
Assets:
Loans held for sale, fair value option	20,867	33,589
Mortgage servicing rights	0	0
Multifamily [Member] \| Level 3 [Member] \| Fair value [Member]
Assets:
Loans held for sale, fair value option	0	0
Mortgage servicing rights	$ 28,415	$ 28,362

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details) - USD ($)	3 Months Ended
Fair Value Measurement - Narrative (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between levels of fair value hierarchy	$ 0	$ 0
Fair value of loans held for investment	$ 5,304,000		$ 5,477,000
Adjustments to appraisal value for commercial loans held for investment collateralized by real estate		0.00%
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustments to appraisal value for commercial loans held for investment collateralized by real estate	0.00%
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustments to appraisal value for commercial loans held for investment collateralized by real estate	35.00%
Weighted average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Adjustments to appraisal value for commercial loans held for investment collateralized by real estate	10.60%
Loans receivable [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)	35.00%	9.40%
Loans receivable [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)	100.00%	100.00%
Loans receivable [Member] \| Weighted average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)	66.60%	40.90%
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans held for investment	$ 5,304,000		5,477,000
Level 3 [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans held for investment	$ 5,304,000		$ 5,477,000

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of EPS Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 5,866	$ 8,983
Weighted average shares:
Basic weighted average number of shares outstanding (in shares)	26,927,464	26,821,396
Dilutive effect of outstanding common stock equivalents (in shares)	231,536	236,053
Diluted weighted-average number of shares outstanding (in shares)	27,159,000	27,057,449
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.22	$ 0.33
Diluted income per share (in dollars per share)	$ 0.22	$ 0.33
Aggregate number of common stock equivalents and unvested restricted stock (in shares)	53,448	141,618

Business Segments (Details)

Business Segments (Details)	3 Months Ended
Business Segments (Details)	Mar. 31, 2018USD ($)segment	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment	2
Condensed income statement:
Net interest income	$ 48,460,000	$ 45,651,000
Provision for credit losses	750,000	0
Noninterest Income	60,831,000	74,461,000
Noninterest expense	100,769,000	106,874,000
Income before income taxes	7,772,000	13,238,000
Income tax (benefit) expense	1,906,000	4,255,000
NET INCOME	5,866,000	8,983,000
Total assets	6,924,056,000	6,401,143,000	$ 6,742,041,000
Commercial and Consumer Banking [Member]
Segment Reporting Information [Line Items]
Maximum amount of commercial real estate loans the company would originate	10,000,000
Condensed income statement:
Net interest income	45,448,000	40,904,000
Provision for credit losses	750,000
Noninterest Income	7,096,000	9,425,000
Noninterest expense	38,272,000	36,470,000
Income before income taxes	13,522,000	13,859,000
Income tax (benefit) expense	3,316,000	4,567,000
NET INCOME	10,206,000	9,292,000
Total assets	6,140,812,000	5,583,171,000
Mortgage Banking [Member]
Condensed income statement:
Net interest income	3,012,000	4,747,000
Provision for credit losses	0
Noninterest Income	53,735,000	65,036,000
Noninterest expense	62,497,000	70,404,000
Income before income taxes	(5,750,000)	(621,000)
Income tax (benefit) expense	(1,410,000)	(312,000)
NET INCOME	(4,340,000)	(309,000)
Total assets	$ 783,244,000	$ 817,972,000

Accumulated Other Comprehensi83

Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 704,380	$ 629,284
Amounts reclassified from accumulated other comprehensive loss	(176)	(4)
Other comprehensive (loss) income	(10,176)	1,926
Ending balance	700,963	640,919
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(7,122)	(10,412)
Other comprehensive (loss) income before reclassifications	(10,000)	1,930
Amounts reclassified from accumulated other comprehensive loss	(176)	(4)
Other comprehensive (loss) income	(10,176)	1,926
Ending balance	$ (17,298)	$ (8,486)

Accumulated Other Comprehensi84

Accumulated Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Gain on sale of investment securities available for sale	$ 222	$ 6
Income tax expense	1,906	4,255
Total, net of tax	176	4
Gains and Losses on Available-for-Sale Securities [Member] \| Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Gain on sale of investment securities available for sale	222	6
Income tax expense	$ 46	$ 2

Revenue (Details)

Revenue (Details)	3 Months Ended
Revenue (Details)	Mar. 31, 2018
Revenue Recognition [Abstract]
Percentage of revenue streams in scope with ASU 2014-09	2.80%

Restructuring - Narrative (Deta

Restructuring - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	$ (291)	$ 3,700
Facility related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	(291)	3,100
Personnel related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges (recoveries)	$ 0	$ 648

Restructuring - Restructuring R

Restructuring - Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	$ 1,386
Restructuring charges (recoveries)	(291)	$ 3,700
Costs paid or otherwise settled	(375)
Balance at March 31, 2018	720	1,386
Facility related costs [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	1,386
Restructuring charges (recoveries)	(291)	3,100
Costs paid or otherwise settled	(375)
Balance at March 31, 2018	720	1,386
Personnel related costs [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	0
Restructuring charges (recoveries)	0	648
Costs paid or otherwise settled	0
Balance at March 31, 2018	$ 0	$ 0