HomeStreet (HMST) 10-Q 3 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 01, 2017
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	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		26,888,287.6

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents (including interest-earning instruments of $7,002 and $34,615)	$ 55,050	$ 53,932
Investment securities (includes $862,851 and $993,990 carried at fair value)	919,459	1,043,851
Loans held for sale (includes $730,042 and $656,334 carried at fair value)	851,126	714,559
Loans held for investment (net of allowance for loan losses of $37,055 and $34,001; includes $5,546 and $17,988 carried at fair value)	4,313,225	3,819,027
Mortgage servicing rights (includes $244,106 and $226,113 carried at fair value)	268,072	245,860
Other real estate owned	3,704	5,243
Federal Home Loan Bank stock, at cost	52,486	40,347
Premises and equipment, net	104,389	77,636
Goodwill	22,564	22,175
Other assets	206,271	221,070
Total assets	6,796,346	6,243,700
Liabilities:
Deposits	4,670,486	4,429,701
Federal Home Loan Bank advances	1,135,245	868,379
Accounts payable and other liabilities	193,866	191,189
Long-term debt	125,280	125,147
Total liabilities	6,124,877	5,614,416
Commitments and contingencies (Note 8)
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, 26,884,402 shares and 26,800,183 shares	511	511
Additional paid-in capital	338,283	336,149
Retained earnings	337,067	303,036
Accumulated other comprehensive loss	(4,392)	(10,412)
Total shareholders' equity	671,469	629,284
Total liabilities and shareholders' equity	$ 6,796,346	$ 6,243,700

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Interest-earning instruments	$ 7,002	$ 34,615
Investment securities held at fair value (AFS)	862,851	993,990
Fair value of loans held for sale	730,042	656,334
Allowance for losses on loans held for investment	37,055	34,001
Fair value of loans held for investment	5,546	17,988
Fair value of single family MSR	$ 244,106	$ 226,113
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	26,884,402	26,800,183
Common stock, shares outstanding	26,884,402	26,800,183

Interim Consolidated Statements

Interim Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Loans	$ 56,547	$ 49,752	$ 157,251	$ 139,748
Investment securities	5,264	5,476	16,315	12,531
Other	170	102	431	396
Total interest income	61,981	55,330	173,997	152,675
Interest expense:
Deposits	6,020	5,362	17,510	13,380
Federal Home Loan Bank advances	3,405	1,605	8,174	4,486
Federal funds purchased and securities sold under agreements to repurchase	0	2	5	2
Long-term debt	1,520	1,440	4,513	2,574
Other	196	119	436	258
Total interest expense	11,141	8,528	30,638	20,700
Net interest income	50,840	46,802	143,359	131,975
Provision for credit losses	250	1,250	750	3,750
Net interest income after provision for credit losses	50,590	45,552	142,609	128,225
Noninterest income:
Net gain on loan origination and sale activities	71,010	92,600	197,199	239,493
Loan servicing income	8,282	12,595	26,285	33,330
Income from WMS Series LLC	166	1,174	757	2,474
Depositor and other retail banking fees	1,839	1,744	5,306	4,991
Insurance agency commissions	535	441	1,432	1,205
Gain on sale of investment securities available for sale	331	48	888	145
Other	1,721	3,143	7,486	4,291
Total noninterest income	83,884	111,745	239,353	285,929
Noninterest expense:
Salaries and related costs	75,374	79,164	223,072	221,615
General and administrative	16,147	14,949	49,147	47,210
Amortization of core deposit intangibles	470	579	1,477	1,636
Legal	352	639	662	1,687
Consulting	914	1,390	2,743	4,239
Federal Deposit Insurance Corporation assessments	791	919	2,312	2,419
Occupancy	12,391	7,740	29,480	22,408
Information services	8,760	7,876	24,580	23,857
Net (benefit) cost from operation and sale of other real estate owned	(502)	1,143	(658)	1,712
Total noninterest expense	114,697	114,399	332,815	326,783
Income before income taxes	19,777	42,898	49,147	87,371
Income tax expense	5,938	15,197	15,116	31,514
NET INCOME	$ 13,839	$ 27,701	$ 34,031	$ 55,857
Basic income per share (in dollars per share)	$ 0.51	$ 1.12	$ 1.27	$ 2.29
Diluted income per share (in dollars per share)	$ 0.51	$ 1.11	$ 1.26	$ 2.27
Basic weighted average number of shares outstanding (in shares)	26,883,392	24,811,169	26,857,006	24,398,683
Diluted weighted average number of shares outstanding (in shares)	27,089,040	24,996,747	27,077,032	24,595,348

Interim Consolidated Statement5

Interim Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 13,839	$ 27,701	$ 34,031	$ 55,857
Unrealized gain on investment securities available for sale:
Unrealized holding gain (loss) arising during the period, net of tax expense (benefit) of $665 and $(962) for the three months ended September 30, 2017 and 2016, and $3,552 and $5,640 for the nine months ended September 30, 2017 and 2016, respectively	1,236	(1,786)	6,597	10,474
Reclassification adjustment for net gains included in net income, net of tax expense of $116 and $17 for the three months ended September 30, 2017 and 2016 and, $311 and $51 for the nine months ended September 30, 2017 and 2016, respectively	(215)	(31)	(577)	(94)
Other comprehensive income (loss)	1,021	(1,817)	6,020	10,380
Comprehensive income	$ 14,860	$ 25,884	$ 40,051	$ 66,237

Interim Consolidated Statement6

Interim Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Tax expense (benefit) on unrealized holding gain (loss) on securities	$ 665	$ (962)	$ 3,552	$ 5,640
Tax expense on reclassification adjustment for net gain on securities included in net income	$ 116	$ 17	$ 311	$ 51

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, 2015	$ 465,275	$ 511	$ 222,328	$ 244,885	$ (2,449)
Common Stock, Shares, Outstanding, beginning balance at Dec. 31, 2015		22,076,534
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	55,857			55,857
Share-based compensation expense	1,278		1,278
Common stock issued	53,238	$ 0	53,238
Common stock issued, shares		2,756,474
Other comprehensive income	10,380				10,380
Ending balance at Sep. 30, 2016	586,028	$ 511	276,844	300,742	7,931
Common Stock, Shares, Outstanding, ending balance at Sep. 30, 2016		24,833,008
Beginning balance at Jun. 30, 2016					9,748
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,701
Other comprehensive income	(1,817)				(1,817)
Ending balance at Sep. 30, 2016	586,028	$ 511	276,844	300,742	7,931
Common Stock, Shares, Outstanding, ending balance at Sep. 30, 2016		24,833,008
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	26,800,183
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 34,031			34,031
Share-based compensation expense	1,884		1,884
Common stock issued	250	$ 0	250
Common stock issued, shares		84,219
Other comprehensive income	6,020				6,020
Ending balance at Sep. 30, 2017	$ 671,469	$ 511	338,283	337,067	(4,392)
Common Stock, Shares, Outstanding, ending balance at Sep. 30, 2017	26,884,402	26,884,402
Beginning balance at Jun. 30, 2017					(5,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 13,839
Other comprehensive income	1,021				1,021
Ending balance at Sep. 30, 2017	$ 671,469	$ 511	$ 338,283	$ 337,067	$ (4,392)
Common Stock, Shares, Outstanding, ending balance at Sep. 30, 2017	26,884,402	26,884,402

Interim Consolidated Statement8

Interim Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 34,031	$ 55,857
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation, amortization and accretion	16,765	12,789
Provision for credit losses	750	3,750
Net fair value adjustment and gain on sale of loans held for sale	(170,209)	(220,944)
Fair value adjustment of loans held for investment	(1,056)	(863)
Origination of mortgage servicing rights	(56,067)	(59,487)
Change in fair value of mortgage servicing rights	31,916	61,294
Net gain on sale of investment securities	(888)	(145)
Net gain on sale of loans originated as held for investment	(2,161)	(1,181)
Net fair value adjustment, gain on sale and provision for losses on other real estate owned	(504)	1,653
Loss on disposal of fixed assets	157	186
Loss on lease abandonment	4,450	0
Net deferred income tax expense	11,513	116
Share-based compensation expense	2,129	1,478
Origination of loans held for sale	(5,789,638)	(6,582,189)
Proceeds from sale of loans originated as held for sale	5,889,561	6,571,684
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable and other assets	11,660	(55,845)
(Decrease) increase in accounts payable and other liabilities	(13,769)	30,569
Net cash used in operating activities	(31,360)	(181,278)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of investment securities	(296,843)	(468,900)
Proceeds from sale of investment securities	342,461	21,107
Principal repayments and maturities of investment securities	81,156	61,018
Proceeds from sale of other real estate owned	3,211	4,310
Proceeds from sale of loans originated as held for investment	140,642	80,956
Mortgage servicing rights purchased from others	(565)	0
Capital expenditures related to other real estate owned	(57)	(270)
Origination of loans held for investment and principal repayments, net	(695,199)	(497,222)
Proceeds from sale of property and equipment	0	1,148
Purchase of property and equipment	(35,771)	(17,932)
Net cash acquired from acquisitions	19,285	24,248
Net cash used in investing activities	(441,680)	(791,537)
CASH FLOWS FROM FINANCING ACTIVITIES:
Increase in deposits, net	219,332	1,097,970
Proceeds from Federal Home Loan Bank advances	7,557,200	11,323,660
Repayment of Federal Home Loan Bank advances	(7,290,200)	(11,497,160)
Proceeds from federal funds purchased and securities sold under agreements to repurchase	351,618	52,304
Repayment of federal funds purchased and securities sold under agreements to repurchase	(351,618)	(52,304)
Proceeds from Federal Home Loan Bank stock repurchase	131,603	197,876
Purchase of Federal Home Loan Bank stock	(143,742)	(192,086)
Proceeds from debt issuance, net	0	63,205
Proceeds from stock issuance, net	11	2,664
Payments from equity raise	(46)	0
Net cash provided by financing activities	474,158	996,129
NET INCREASE IN CASH AND CASH EQUIVALENTS	1,118	23,314
CASH AND CASH EQUIVALENTS:
Beginning of year	53,932	32,684
End of period	55,050	55,998
Cash paid during the period for:
Interest paid	29,347	19,067
Federal and state income taxes (refunded) paid, net	(23,382)	14,318
Non-cash activities:
Loans held for investment foreclosed and transferred to other real estate owned	1,125	1,661
Loans transferred from held for investment to held for sale	246,664	101,938
Loans transferred from held for sale to held for investment	41,686	10,262
(Reduction in) Ginnie Mae loans recognized with the right to repurchase, net	493	(33)
Orange County Business Bank [Member]
Assets acquired, excluding cash acquired	0	165,786
Liabilities assumed	0	141,267
Goodwill	0	8,360
Common stock issued	$ 0	$ 50,373

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
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 and HomeStreet Bank (the “Bank”), and the Bank’s subsidiaries, HomeStreet/WMS, Inc., HomeStreet Reinsurance, Ltd., Continental Escrow Company, HS Properties, Inc., HS Evergreen Corporate Center LLC and Union Street Holdings 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 (Note 2, Business Combinations ), allowance for credit losses (Note 4, Loans and Credit Quality ), valuation of residential mortgage servicing rights and loans held for sale (Note 7, Mortgage Banking Operations ), valuation of certain loans held for investment (Note 4, Loans and Credit Quality ), valuation of investment securities (Note 3, Investment Securities ), and valuation of derivatives (Note 6, 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, 2016, filed with the Securities and Exchange Commission (“2016 Annual Report on Form 10-K”). Recent Accounting Developments In August 2017 the Financial Accounting Standards Board ('"FASB") issued Accounting Standards Update ("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 Financial Accounting Standards Board ('"FASB") issued Accounting Standards Update ("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. In January 2017, the FASB issued 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. The new standard is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017 with early adoption permitted for transactions that occurred before the issuance date or effective date of the standard if the transactions were not reported in financial statements that have been issued or made available for issuance. The standard must be applied prospectively. Upon adoption, the standard will impact how we assess acquisitions (or disposals) of assets or businesses. Management does not expect the adoption of ASU 2017-01 to have a material impact on its consolidated financial statements. On November 17, 2016, the FASB issued 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. Additionally, amounts for restricted cash and restricted cash equivalents are to be included with cash and cash equivalents if the cash flow statement includes a reconciliation of the total cash balances for a reporting period. This ASU is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early application permitted. Management does not anticipate that this guidance will have a material impact on the Company's consolidated financial statements. On August 26, 2016, the FASB issued 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 amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years and should be applied using a retrospective transition method to each period presented. Early application was permitted upon issuance of the ASU. Management is currently evaluating the impact of this ASU but does not expect this ASU to 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 delays 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 have 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. In January 2016, FASB issued 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 amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the provisions of ASU No. 2016-01 to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606)

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS: Recent Acquisition Activity On September 15, 2017, the Company completed its acquisition of one branch and its related deposits in Southern California, from Opus Bank. The provisional application of the acquisition method of accounting resulted in goodwill of $389 thousand . On November 10, 2016, the Company completed its acquisition of two branches and their related deposits in Southern California, from Boston Private Bank and Trust. The provisional application of the acquisition method of accounting resulted in goodwill of $2.3 million . On August 12, 2016, the Company completed its acquisition of certain assets and liabilities, including two branches in Lake Oswego, Oregon from The Bank of Oswego. The application of the acquisition method of accounting resulted in goodwill of $19 thousand . On February 1, 2016, the Company completed its acquisition of Orange County Business Bank ("OCBB") located in Irvine, California through the merger of OCBB with and into HomeStreet Bank with HomeStreet Bank as the surviving subsidiary. The purchase price of this acquisition was $55.9 million . OCBB shareholders as of the effective time received merger consideration equal to 0.5206 shares of HomeStreet common stock, and $1.1641 in cash upon the surrender of their OCBB shares, which resulted in the issuance of 2,459,461 shares of HomeStreet common stock. The application of the acquisition method of accounting resulted in goodwill of $8.4 million

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 155,490 $ 8 $ (3,137 ) $ 152,361 Commercial 20,410 23 (218 ) 20,215 Municipal bonds 368,921 3,496 (3,139 ) 369,278 Collateralized mortgage obligations: Residential 187,458 331 (2,852 ) 184,937 Commercial 87,382 187 (752 ) 86,817 Corporate debt securities 29,173 74 (517 ) 28,730 U.S. Treasury securities 10,896 — (146 ) 10,750 Agency debentures 9,857 — (94 ) 9,763 $ 869,587 $ 4,119 $ (10,855 ) $ 862,851 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,579 $ 75 $ (55 ) $ 12,599 Commercial 21,108 125 (77 ) 21,156 Collateralized mortgage obligations 3,492 — (18 ) 3,474 Municipal bonds 19,330 327 (145 ) 19,512 Corporate debt securities 99 — — 99 $ 56,608 $ 527 $ (295 ) $ 56,840 At December 31, 2016 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 181,158 $ 31 $ (4,115 ) $ 177,074 Commercial 25,896 13 (373 ) 25,536 Municipal bonds 473,153 1,333 (6,813 ) 467,673 Collateralized mortgage obligations: Residential 194,982 32 (3,813 ) 191,201 Commercial 71,870 29 (1,135 ) 70,764 Corporate debt securities 52,045 110 (1,033 ) 51,122 U.S. Treasury securities 10,882 — (262 ) 10,620 $ 1,009,986 $ 1,548 $ (17,544 ) $ 993,990 HELD TO MATURITY Mortgage-backed securities: Residential $ 13,844 $ 71 $ (90 ) $ 13,825 Commercial 16,303 70 (64 ) 16,309 Municipal bonds 19,612 99 (459 ) 19,252 Corporate debt securities 102 — — 102 $ 49,861 $ 240 $ (613 ) $ 49,488 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 September 30, 2017 and December 31, 2016 , 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 September 30, 2017 and December 31, 2016 , 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 September 30, 2017 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 $ (2,330 ) $ 119,404 $ (807 ) $ 31,548 $ (3,137 ) $ 150,952 Commercial (60 ) 12,653 (158 ) 2,899 (218 ) 15,552 Municipal bonds (2,324 ) 163,838 (815 ) 52,010 (3,139 ) 215,848 Collateralized mortgage obligations: Residential (1,195 ) 92,065 (1,657 ) 58,595 (2,852 ) 150,660 Commercial (456 ) 51,910 (296 ) 9,423 (752 ) 61,333 Corporate debt securities (180 ) 6,227 (337 ) 8,450 (517 ) 14,677 U.S. Treasury securities (146 ) 10,750 — — (146 ) 10,750 Agency debentures (94 ) 9,763 — — (94 ) 9,763 $ (6,785 ) $ 466,610 $ (4,070 ) $ 162,925 $ (10,855 ) $ 629,535 HELD TO MATURITY Mortgage-backed securities: Residential $ (55 ) $ 4,778 $ — $ — $ (55 ) $ 4,778 Commercial (77 ) 9,512 — — (77 ) 9,512 Collateralized mortgage obligations (18 ) 3,474 — — (18 ) 3,474 Municipal bonds (70 ) 5,247 (75 ) 5,386 (145 ) 10,633 $ (220 ) $ 23,011 $ (75 ) $ 5,386 $ (295 ) $ 28,397 At December 31, 2016 Less than 12 months 12 months or more Total (in thousands) Gross Fair Gross Fair Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (3,842 ) $ 144,240 $ (273 ) $ 9,907 $ (4,115 ) $ 154,147 Commercial (373 ) 23,798 — — (373 ) 23,798 Municipal bonds (6,813 ) 283,531 — — (6,813 ) 283,531 Collateralized mortgage obligations: Residential (3,052 ) 175,490 (761 ) 11,422 (3,813 ) 186,912 Commercial (1,005 ) 60,926 (130 ) 5,349 (1,135 ) 66,275 Corporate debt securities (472 ) 24,447 (561 ) 11,677 (1,033 ) 36,124 U.S. Treasury securities (262 ) 10,620 — — (262 ) 10,620 $ (15,819 ) $ 723,052 $ (1,725 ) $ 38,355 $ (17,544 ) $ 761,407 HELD TO MATURITY Mortgage-backed securities: Residential $ (90 ) $ 5,481 $ — $ — $ (90 ) $ 5,481 Commercial (64 ) 13,156 — — (64 ) 13,156 Municipal bonds (459 ) 11,717 — — (459 ) 11,717 $ (613 ) $ 30,354 $ — $ — $ (613 ) $ 30,354 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 September 30, 2017 and December 31, 2016 . In addition, as of September 30, 2017 and December 31, 2016 , 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 September 30, 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 $ — — % $ — — % $ 10,319 1.65 % $ 142,042 1.98 % $ 152,361 1.95 % Commercial — — 15,606 2.09 4,609 2.04 — — 20,215 2.08 Municipal bonds 1,622 3.00 26,236 3.22 42,055 3.15 299,365 3.80 369,278 3.68 Collateralized mortgage obligations: Residential — — — — 1,063 1.80 183,874 2.05 184,937 2.05 Commercial — — 13,091 2.09 22,280 2.33 51,446 2.05 86,817 2.12 Agency debentures — — — — 9,763 2.29 — — 9,763 2.29 Corporate debt securities — — 7,678 2.72 11,020 3.46 10,032 3.54 28,730 3.30 U.S. Treasury securities 1,000 1.22 — — 9,750 1.78 — — 10,750 1.73 Total available for sale $ 2,622 2.32 % $ 62,611 2.63 % $ 110,859 2.62 % $ 686,759 2.81 % $ 862,851 2.77 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 12,599 2.95 % $ 12,599 2.95 % Commercial — — 4,499 2.03 16,657 2.69 — — 21,156 2.55 Collateralized mortgage obligations — — — — — — 3,474 1.75 3,474 1.75 Municipal bonds — — 1,164 2.93 5,402 2.79 12,946 3.40 19,512 3.21 Corporate debt securities — — — — — — 99 6.00 99 6.00 Total held to maturity $ — — % $ 5,663 2.21 % $ 22,059 2.71 % $ 29,118 3.02 % $ 56,840 2.82 % At December 31, 2016 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 $ 1 0.29 % $ — — % $ 2,122 1.59 % $ 174,951 2.03 % $ 177,074 2.02 % Commercial — — 20,951 2.13 4,585 2.06 — — 25,536 2.11 Municipal bonds 3,479 3.30 20,939 2.94 52,043 2.55 391,212 3.08 467,673 3.02 Collateralized mortgage obligations: Residential — — — — 1,639 1.32 189,562 2.06 191,201 2.06 Commercial — — 10,860 1.84 19,273 2.74 40,631 1.91 70,764 2.12 Corporate debt securities — — 10,516 2.67 21,493 3.74 19,113 3.54 51,122 3.45 U.S. Treasury securities 999 0.64 — — 9,621 1.76 — — 10,620 1.66 Total available for sale $ 4,479 2.70 % $ 63,266 2.43 % $ 110,776 2.69 % $ 815,469 2.57 % $ 993,990 2.57 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 13,825 3.11 % $ 13,825 3.11 % Commercial — — 4,581 2.06 11,728 2.71 — — 16,309 2.53 Municipal bonds — — — — 6,450 2.73 12,802 3.31 19,252 3.11 Corporate debt securities — — — — — — 102 6.00 102 6.00 Total held to maturity $ — — % $ 4,581 2.06 % $ 18,178 2.72 % $ 26,729 3.22 % $ 49,488 2.93 % Sales of investment securities available for sale were as follows. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Proceeds $ 27,827 $ 9,641 $ 342,460 $ 21,108 Gross gains 331 48 907 145 Gross losses — — (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 September 30, Federal Home Loan Bank to secure borrowings $ 196,363 Washington and California State to secure public deposits 37,456 Securities pledged to secure derivatives in a liability position 7,563 Other securities pledged 6,634 Total securities pledged as collateral $ 248,016 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 September 30, 2017 and December 31, 2016 . Tax-exempt interest income on securities available for sale totaling $2.0 million and $1.8 million for the three months ended September 30, 2017 and 2016 , respectively, and $6.9 million and $4.3 million for the nine months ended September 30, 2017 and 2016

Loans and Credit Quality

Loans and Credit Quality	9 Months Ended
	Sep. 30, 2017
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 2016 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 commercial real estate, multifamily, construction/land development and commercial business loans within the commercial loan portfolio segment. Loans held for investment consist of the following: (in thousands) At September 30, At December 31, Consumer loans Single family (1) $ 1,269,484 $ 1,083,822 Home equity and other 436,755 359,874 1,706,239 1,443,696 Commercial loans Commercial real estate 986,421 871,563 Multifamily 747,171 674,219 Construction/land development 653,132 636,320 Commercial business 245,859 223,653 2,632,583 2,405,755 4,338,822 3,849,451 Net deferred loan fees and costs 11,458 3,577 4,350,280 3,853,028 Allowance for loan losses (37,055 ) (34,001 ) $ 4,313,225 $ 3,819,027 (1) Includes $5.5 million and $18.0 million at September 30, 2017 and December 31, 2016 , 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 $1.75 billion and $1.59 billion at September 30, 2017 and December 31, 2016 , respectively, were pledged to secure borrowings from the FHLB as part of our liquidity management strategy. Additionally, loans totaling $724.9 million and $554.7 million at September 30, 2017 and December 31, 2016 , 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 September 30, 2017 , we had concentrations representing 10% or more of the total portfolio by state and property type for the loan classes of single family and commercial real estate within the state of Washington, which represented 14.4% and 13.2% of the total portfolio, respectively. Additionally, we had concentrations representing 10% or more of the total portfolio by state and property type for the loan class of single family within the state of California, which represented 10.2% of the total portfolio. At December 31, 2016 we had concentrations representing 10% or more of the total portfolio by state and property type for the loan classes of single family and commercial real estate within the state of Washington, which represented 13.8% and 14.4% 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 September 30, 2017 . 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 the 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 2016 Annual Report on Form 10-K. Activity in the allowance for credit losses was as follows. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Allowance for credit losses (roll-forward): Beginning balance $ 37,470 $ 34,001 $ 35,264 $ 30,659 Provision for credit losses 250 1,250 750 3,750 Recoveries, net of charge-offs 475 (18 ) 2,181 824 Ending balance $ 38,195 $ 35,233 $ 38,195 $ 35,233 Components: Allowance for loan losses $ 37,055 $ 33,975 $ 37,055 $ 33,975 Allowance for unfunded commitments 1,140 1,258 1,140 1,258 Allowance for credit losses $ 38,195 $ 35,233 $ 38,195 $ 35,233 Activity in the allowance for credit losses by loan portfolio and loan class was as follows. Three Months Ended September 30, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,288 $ — $ 2 $ 791 $ 9,081 Home equity and other 6,856 (72 ) 428 (219 ) 6,993 15,144 (72 ) 430 572 16,074 Commercial loans Commercial real estate 7,455 — — 46 7,501 Multifamily 4,059 — — (3 ) 4,056 Construction/land development 8,226 — 172 (451 ) 7,947 Commercial business 2,586 (201 ) 146 86 2,617 22,326 (201 ) 318 (322 ) 22,121 Total allowance for credit losses $ 37,470 $ (273 ) $ 748 $ 250 $ 38,195 Three Months Ended September 30, 2016 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,294 $ (42 ) $ 1 $ 995 $ 9,248 Home equity and other 5,400 (356 ) 192 512 5,748 13,694 (398 ) 193 1,507 14,996 Commercial loans Commercial real estate 6,045 — — 80 6,125 Multifamily 2,048 — — 49 2,097 Construction/land development 9,369 — 176 (524 ) 9,021 Commercial business 2,845 — 11 138 2,994 20,307 — 187 (257 ) 20,237 Total allowance for credit losses $ 34,001 $ (398 ) $ 380 $ 1,250 $ 35,233 Nine Months Ended September 30, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,196 $ (2 ) $ 1,018 $ (131 ) $ 9,081 Home equity and other 6,153 (583 ) 781 642 6,993 14,349 (585 ) 1,799 511 16,074 Commercial loans Commercial real estate 6,680 — — 821 7,501 Multifamily 3,086 — — 970 4,056 Construction/land development 8,553 — 606 (1,212 ) 7,947 Commercial business 2,596 (217 ) 578 (340 ) 2,617 20,915 (217 ) 1,184 239 22,121 Total allowance for credit losses $ 35,264 $ (802 ) $ 2,983 $ 750 $ 38,195 Nine Months Ended September 30, 2016 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,942 $ (74 ) $ 87 $ 293 $ 9,248 Home equity and other 4,620 (654 ) 530 1,252 5,748 13,562 (728 ) 617 1,545 14,996 Commercial loans Commercial real estate 4,847 — — 1,278 6,125 Multifamily 1,194 — — 903 2,097 Construction/land development 9,271 (42 ) 959 (1,167 ) 9,021 Commercial business 1,785 (26 ) 44 1,191 2,994 17,097 (68 ) 1,003 2,205 20,237 Total allowance for credit losses $ 30,659 $ (796 ) $ 1,620 $ 3,750 $ 35,233 The following table disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. At September 30, 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 $ 8,727 $ 354 $ 9,081 $ 1,184,497 $ 79,441 $ 1,263,938 Home equity and other 6,946 47 6,993 435,454 1,301 436,755 15,673 401 16,074 1,619,951 80,742 1,700,693 Commercial loans Commercial real estate 7,501 — 7,501 983,859 2,562 986,421 Multifamily 4,056 — 4,056 746,349 822 747,171 Construction/land development 7,947 — 7,947 652,125 1,007 653,132 Commercial business 2,215 402 2,617 243,593 2,266 245,859 21,719 402 22,121 2,625,926 6,657 2,632,583 Total loans evaluated for impairment 37,392 803 38,195 4,245,877 87,399 4,333,276 Loans held for investment carried at fair value $ 5,416 $ 130 5,546 (1) Total loans held for investment $ 37,392 $ 803 $ 38,195 $ 4,251,293 $ 87,529 $ 4,338,822 (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. At December 31, 2016 (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 $ 7,871 $ 325 $ 8,196 $ 985,219 $ 80,676 $ 1,065,895 Home equity and other 6,104 49 6,153 358,350 1,463 359,813 13,975 374 14,349 1,343,569 82,139 1,425,708 Commercial loans Commercial real estate 6,680 — 6,680 869,225 2,338 871,563 Multifamily 3,086 — 3,086 673,374 845 674,219 Construction/land development 8,553 — 8,553 634,427 1,893 636,320 Commercial business 2,591 5 2,596 220,360 3,293 223,653 20,910 5 20,915 2,397,386 8,369 2,405,755 Total loans evaluated for impairment 34,885 379 35,264 3,740,955 90,508 3,831,463 Loans held for investment carried at fair value 17,988 (1) Total loans held for investment $ 34,885 $ 379 $ 35,264 $ 3,740,955 $ 90,508 $ 3,849,451 (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 September 30, 2017 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 75,396 $ 77,012 $ — Home equity and other 787 813 — 76,183 77,825 — Commercial loans Commercial real estate 2,562 3,090 — Multifamily 822 842 — Construction/land development 1,007 1,549 — Commercial business 440 1,456 — 4,831 6,937 — $ 81,014 $ 84,762 $ — With an allowance recorded: Consumer loans Single family $ 4,175 $ 4,267 $ 354 Home equity and other 514 514 47 4,689 4,781 401 Commercial loans Commercial business 1,826 1,874 402 $ 6,515 $ 6,655 $ 803 Total: Consumer loans Single family (3) $ 79,571 $ 81,279 $ 354 Home equity and other 1,301 1,327 47 80,872 82,606 401 Commercial loans Commercial real estate 2,562 3,090 — Multifamily 822 842 — Construction/land development 1,007 1,549 — Commercial business 2,266 3,330 402 6,657 8,811 402 Total impaired loans $ 87,529 $ 91,417 $ 803 (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 $73.7 million in single family performing trouble debt restructurings "TDRs". At December 31, 2016 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 77,756 $ 80,573 $ — Home equity and other 946 977 — 78,702 81,550 — Commercial loans Commercial real estate 2,338 2,846 — Multifamily 845 851 — Construction/land development 1,893 2,819 — Commercial business 2,945 4,365 — 8,021 10,881 — $ 86,723 $ 92,431 $ — With an allowance recorded: Consumer loans Single family $ 2,920 $ 3,011 $ 325 Home equity and other 517 517 49 3,437 3,528 374 Commercial loans Commercial business 348 347 5 348 347 5 $ 3,785 $ 3,875 $ 379 Total: Consumer loans Single family (3) $ 80,676 $ 83,584 $ 325 Home equity and other 1,463 1,494 49 82,139 85,078 374 Commercial loans Commercial real estate 2,338 2,846 — Multifamily 845 851 — Construction/land development 1,893 2,819 — Commercial business 3,293 4,712 5 8,369 11,228 5 Total impaired loans $ 90,508 $ 96,306 $ 379 (1) Includes partial charge-offs and nonaccrual interest paid. (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 $73.1 million in single family performing TDRs. The following tables provide the average recorded investment and interest income recognized on impaired loans by portfolio segment and class. (in thousands) Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Consumer loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Single family $ 81,770 $ 738 $ 85,138 $ 727 Home equity and other 1,501 19 1,371 17 83,271 757 86,509 744 Commercial loans Commercial real estate 2,960 33 3,431 4 Multifamily 825 6 621 6 Construction/land development 1,015 21 2,333 23 Commercial business 2,045 30 4,068 15 6,845 90 10,453 48 $ 90,116 $ 847 $ 96,962 $ 792 (in thousands) Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Consumer loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Single family $ 81,889 $ 2,278 $ 83,271 $ 2,171 Home equity and other 1,475 62 1,479 50 83,364 2,340 84,750 2,221 Commercial loans Commercial real estate 3,446 129 3,439 12 Multifamily 833 18 1,877 41 Construction/land development 1,277 68 3,023 67 Commercial business 2,579 113 3,902 56 8,135 328 12,241 176 $ 91,499 $ 2,668 $ 96,991 $ 2,397 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, 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 90-179 days past due from the required payment date at month-end. Loss. A homogeneous loss loan, risk rated 10, is 180 days and more past due from the required payment date. These loans are generally charged-off in the month in which the 180 day time period elapses. 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, risk rated 10, 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 September 30, 2017 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,241,538 (1) $ 2,853 $ 13,510 $ 11,583 $ 1,269,484 Home equity and other 434,377 248 660 1,470 436,755 1,675,915 3,101 14,170 13,053 1,706,239 Commercial loans Commercial real estate 945,951 29,487 7,868 3,115 986,421 Multifamily 734,472 10,501 1,884 314 747,171 Construction/land development 645,968 5,731 1,433 — 653,132 Commercial business 198,687 42,290 1,587 3,295 245,859 2,525,078 88,009 12,772 6,724 2,632,583 $ 4,200,993 $ 91,110 $ 26,942 $ 19,777 $ 4,338,822 (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. At December 31, 2016 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,051,463 (1) $ 4,348 $ 15,172 $ 12,839 $ 1,083,822 Home equity and other 357,191 597 514 1,572 359,874 1,408,654 4,945 15,686 14,411 1,443,696 Commercial loans Commercial real estate 809,996 52,519 7,165 1,883 871,563 Multifamily 660,234 13,140 508 337 674,219 Construction/land development 615,675 16,074 3,083 1,488 636,320 Commercial business 171,883 42,767 3,385 5,618 223,653 2,257,788 124,500 14,141 9,326 2,405,755 $ 3,666,442 $ 129,445 $ 29,827 $ 23,737 $ 3,849,451 (1) Includes $18.0 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 September 30, 2017 and December 31, 2016 , 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 2016 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 FHA or guaranteed by the VA are generally maintained on accrual status even if 90 days or more past due. The following table presents an aging analysis of past due loans by loan portfolio segment and loan class. At September 30, 2017 (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 $ 8,851 $ 4,615 $ 48,647 $ 62,113 $ 1,207,371 (1) $ 1,269,484 $ 37,185 (2) Home equity and other 674 121 1,470 2,265 434,490 436,755 — 9,525 4,736 50,117 64,378 1,641,861 1,706,239 37,185 Commercial loans Commercial real estate 913 — 724 1,637 984,784 986,421 — Multifamily — — 314 314 746,857 747,171 — Construction/land development 992 — — 992 652,140 653,132 — Commercial business 897 — 1,153 2,050 243,809 245,859 — 2,802 — 2,191 4,993 2,627,590 2,632,583 — $ 12,327 $ 4,736 $ 52,308 $ 69,371 $ 4,269,451 $ 4,338,822 $ 37,185 At December 31, 2016 (in thousands) 30-59 days 60-89 days 90 days or Total past Current Total 90 days or Consumer loans Single family $ 4,310 $ 5,459 $ 53,563 $ 63,332 $ 1,020,490 (1) $ 1,083,822 $ 40,846 (2) Home equity and other 251 442 1,571 2,264 357,610 359,874 — 4,561 5,901 55,134 65,596 1,378,100 1,443,696 40,846 Commercial loans Commercial real estate 71 205 2,127 2,403 869,160 871,563 — Multifamily — — 337 337 673,882 674,219 — Construction/land development — — 1,376 1,376 634,944 636,320 — Commercial business 202 — 2,414 2,616 221,037 223,653 — 273 205 6,254 6,732 2,399,023 2,405,755 — $ 4,834 $ 6,106 $ 61,388 $ 72,328 $ 3,777,123 $ 3,849,451 $ 40,846 (1) Includes $5.5 million and $18.0 million of loans at September 30, 2017 and December 31, 2016 , 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 the 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 and are a subset of the 90 days or more past due balance. The following tables present performing and nonperforming loan balances by loan portfolio segment and loan class. At September 30, 2017 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,258,022 (1) $ 11,462 $ 1,269,484 Home equity and other 435,285 1,470 436,755 1,693,307 12,932 1,706,239 Commercial loans Commercial real estate 985,697 724 986,421 Multifamily 746,857 314 747,171 Construction/land development 653,132 — 653,132 Commercial business 244,706 1,153 245,859 2,630,392 2,191 2,632,583 $ 4,323,699 $ 15,123 $ 4,338,822 At December 31, 2016 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,071,105 (1) $ 12,717 $ 1,083,822 Home equity and other 358,303 1,571 359,874 1,429,408 14,288 1,443,696 Commercial loans Commercial real estate 869,436 2,127 871,563 Multifamily 673,882 337 674,219 Construction/land development 634,944 1,376 636,320 Commercial business 221,239 2,414 223,653 2,399,501 6,254 2,405,755 $ 3,828,909 $ 20,542 $ 3,849,451 (1) Includes $5.5 million and $18.0 million of loans at September 30, 2017 and December 31, 2016 , 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. The following tables present information about TDR activity during the periods presented. Three Months Ended September 30, 2017 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 9 $ 1,914 $ — Payment restructure 29 5,911 — Total consumer Interest rate reduction 9 1,914 — Payment restructure 29 5,911 — 38 7,825 — Total loans Interest rate reduction 9 1,914 — Payment restructure 29 5,911 — 38 $ 7,825 $ — Three Months Ended September 30, 2016 (dollars in tho

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
DEPOSITS	DEPOSITS: Deposit balances, including stated rates, were as follows. (in thousands) At September 30, At December 31, Noninterest-bearing accounts $ 1,087,425 $ 964,829 NOW accounts, 0.00% to 1.00% at September 30, 2017 and December 31, 2016 528,679 468,812 Statement savings accounts, due on demand, 0.05% to 1.13% at September 30, 2017 and December 31, 2016 308,217 301,361 Money market accounts, due on demand, 0.00% to 1.70% and at September 30, 2017 and December 31, 2016 1,563,921 1,603,141 Certificates of deposit, 0.05% to 3.80% at September 30, 2017 and December 31, 2016 1,182,244 1,091,558 $ 4,670,486 $ 4,429,701 Interest expense on deposits was as follows. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 NOW accounts $ 500 $ 484 $ 1,480 $ 1,465 Statement savings accounts 256 262 761 771 Money market accounts 2,089 2,084 6,254 5,057 Certificates of deposit 3,175 2,532 9,015 6,087 $ 6,020 $ 5,362 $ 17,510 $ 13,380 The weighted-average interest rates on certificates of deposit were 1.06% and 0.96% at September 30, 2017 and December 31, 2016 , respectively. Certificates of deposit outstanding mature as follows. (in thousands) At September 30, Within one year $ 854,650 One to two years 267,893 Two to three years 31,851 Three to four years 13,714 Four to five years 14,051 Thereafter 85 $ 1,182,244 The aggregate amount of time deposits in denominations of $100 thousand or more at September 30, 2017 and December 31, 2016 were $467.6 million and $508.6 million , respectively. The aggregate amount of time deposits in denominations of more than $250 thousand at September 30, 2017 and December 31, 2016 were $92.4 million and $87.4 million , respectively. There were $324.0 million and $234.4 million of brokered deposits at September 30, 2017 and December 31, 2016

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2017
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 MSRs, the Company utilizes derivatives, such as forward sale commitments, futures, option contracts, interest rate swaps and "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 September 30, 2017 or December 31, 2016 . 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 statement of financial condition. Refer to Note 3, Investment Securities, for further information on securities collateral pledged. At September 30, 2017 and December 31, 2016 , 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 2016 Annual Report on Form 10-K. The notional amounts and fair values for derivatives consist of the following. At September 30, 2017 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 2,127,585 $ 3,907 $ (3,871 ) Interest rate swaptions 215,000 2 — Interest rate lock and purchase loan commitments 722,048 21,067 (65 ) Interest rate swaps 2,030,150 13,515 (20,589 ) Eurodollar futures 2,526,000 135 — Total derivatives before netting $ 7,620,783 38,626 (24,525 ) Netting adjustment/Cash collateral (1) 3,993 22,853 Carrying value on consolidated statements of financial condition $ 42,619 $ (1,672 ) (1) Includes cash collateral of $26.8 million at September 30, 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. At December 31, 2016 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 3,596,677 $ 24,623 $ (15,203 ) Interest rate swaptions 20,000 1 — Interest rate lock and purchase loan commitments 746,102 19,586 (367 ) Interest rate swaps 1,689,850 15,016 (26,829 ) Total derivatives before netting $ 6,052,629 59,226 (42,399 ) Netting adjustment/Cash collateral (1) 10,174 37,836 Carrying value on consolidated statements of financial condition $ 69,400 $ (4,563 ) (1) Includes cash collateral of $48.0 million at December 31, 2016 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 September 30, 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 $ 38,626 $ 3,993 $ 42,619 $ — $ 42,619 Derivative liabilities $ (24,525 ) $ 22,853 $ (1,672 ) $ 154 $ (1,518 ) At December 31, 2016 (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 $ 59,226 $ 10,174 $ 69,400 $ — $ 69,400 Derivative liabilities $ (42,399 ) $ 37,836 $ (4,563 ) $ 1,820 $ (2,743 ) (1) Includes cash collateral of $26.8 million and $48.0 million at September 30, 2017 and December 31, 2016 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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Recognized in noninterest income: Net gain (loss) on loan origination and sale activities (1) $ (9,180 ) $ (3,675 ) $ (20,788 ) $ (4,006 ) Loan servicing income (2) 2,807 3,162 12,060 57,110 Other (3) — 2,087 — 735 $ (6,373 ) $ 1,574 $ (8,728 ) $ 53,839 (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. (3)

Mortgage Banking Operations

Mortgage Banking Operations	9 Months Ended
	Sep. 30, 2017
Mortgage Banking [Abstract]
MORTGAGE BANKING OPERATIONS	MORTGAGE BANKING OPERATIONS: Loans held for sale consisted of the following. (in thousands) At September 30, At December 31, Single family $ 730,042 $ 656,334 Multifamily DUS ® (1) 47,014 35,506 Other (2) 74,070 22,719 Total loans held for sale $ 851,126 $ 714,559 (1) Fannie Mae Multifamily Delegated Underwriting and Servicing Program (“DUS" ® ) is a registered trademark of Fannie Mae. (2) Includes multifamily and commercial loans originated from sources other than DUS ® . Loans sold consisted of the following. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Single family $ 1,956,129 $ 2,489,415 $ 5,504,366 $ 6,134,390 Multifamily DUS ® 102,075 58,484 214,236 215,848 Other (1) 125,493 50,255 163,374 82,068 Total loans sold $ 2,183,697 $ 2,598,154 $ 5,881,976 $ 6,432,306 (1) Includes multifamily and commercial loans originated from sources other than DUS ® . Gain on loan origination and sale activities, including the effects of derivative risk management instruments, consisted of the following. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Single family: Servicing value and secondary market gains (1) $ 56,657 $ 79,946 $ 164,548 $ 207,758 Loan origination and administration fees 7,356 8,931 19,960 21,614 Total single family 64,013 88,877 184,508 229,372 Multifamily DUS ® 4,152 2,695 8,785 7,879 Other (2) 2,845 1,028 3,906 2,242 Total gain on loan origination and sale activities $ 71,010 $ 92,600 $ 197,199 $ 239,493 (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. (2) Includes multifamily and commercial loans originated from sources other than DUS ® . 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 is presented below at the unpaid principal balance. (in thousands) At September 30, At December 31, Single family U.S. government and agency $ 21,378,395 $ 18,931,835 Other 513,858 556,621 21,892,253 19,488,456 Commercial Multifamily DUS ® 1,213,459 1,108,040 Other 78,674 69,323 1,292,133 1,177,363 Total loans serviced for others $ 23,184,386 $ 20,665,819 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 8, Commitments, Guarantees and Contingencies, of this Form 10-Q. The following is a summary of changes in the Company's liability for estimated mortgage repurchase losses. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Balance, beginning of period $ 2,990 $ 3,379 $ 3,382 $ 2,922 Additions (reductions), net (1) (338 ) 495 (370 ) 1,407 Realized losses (2) (148 ) (251 ) (508 ) (706 ) Balance, end of period $ 2,504 $ 3,623 $ 2,504 $ 3,623 (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, depending on the requirements, 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 $6.5 million and $7.5 million were recorded in other assets as of September 30, 2017 and December 31, 2016 , 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 September 30, 2017 and December 31, 2016 , delinquent or defaulted mortgage loans currently in Ginnie Mae pools that the Company has recognized on its consolidated statements of financial condition totaled $36.3 million and $35.8 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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Servicing income, net: Servicing fees and other $ 16,480 $ 14,104 $ 48,636 $ 39,460 Changes in fair value of single family MSRs due to modeled amortization (1) (9,167 ) (8,925 ) (26,596 ) (23,940 ) Amortization of multifamily MSRs (811 ) (661 ) (2,503 ) (1,946 ) 6,502 4,518 19,537 13,574 Risk management, single family MSRs: Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) (1,027 ) 4,915 (5,312 ) (37,354 ) Net gain from derivatives economically hedging MSR 2,807 3,162 12,060 57,110 1,780 8,077 6,748 19,756 Mortgage servicing income $ 8,282 $ 12,595 $ 26,285 $ 33,330 (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 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 September 30, Nine Months Ended September 30, (rates per annum) (1) 2017 2016 2017 2016 Constant prepayment rate ("CPR") (2) 13.24 % 14.77 % 13.34 % 15.67 % Discount rate (3) 10.28 % 10.19 % 10.29 % 10.34 % (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 September 30, 2017 Fair value of single family MSR $ 244,106 Expected weighted-average life (in years) 5.96 Constant prepayment rate (1) 13.09 % Impact on 25 basis points adverse change in interest rates $ (18,776 ) Impact on 50 basis points adverse change in interest rates $ (39,646 ) Discount rate 10.40 % Impact on fair value of 100 basis points increase $ (8,442 ) Impact on fair value of 200 basis points increase $ (16,324 ) (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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ 236,621 $ 130,900 $ 226,113 $ 156,604 Additions and amortization: Originations 17,679 23,020 49,345 54,600 Purchases — — 565 — Changes due to modeled amortization (1) (9,167 ) (8,925 ) (26,596 ) (23,940 ) Net additions and amortization 8,512 14,095 23,314 30,660 Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) (1,027 ) 4,915 (5,321 ) (37,354 ) Ending balance $ 244,106 $ 149,910 $ 244,106 $ 149,910 (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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ 21,600 $ 16,366 $ 19,747 $ 14,651 Origination 3,177 1,886 6,722 4,886 Amortization (811 ) (661 ) (2,503 ) (1,946 ) Ending balance $ 23,966 $ 17,591 $ 23,966 $ 17,591 At September 30, 2017 , the expected weighted-average life of the Company’s multifamily MSRs was 10.28 years . Projected amortization expense for the gross carrying value of multifamily MSRs is estimated as follows. (in thousands) At September 30, 2017 Remainder of 2017 $ 824 2018 3,254 2019 3,152 2020 3,078 2021 2,868 2022 and thereafter 10,790 Carrying value of multifamily MSR $ 23,966

Commitments, Guarantees and Con

Commitments, Guarantees and Contingencies	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 and December 31, 2016 was $91.5 million and $42.6 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 $680.8 million and $603.8 million at September 30, 2017 and December 31, 2016 , respectively. Unused home equity and commercial banking funding lines totaled $426.1 million and $289.3 million at September 30, 2017 and December 31, 2016 , 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 $1.1 million and $1.3 million at September 30, 2017 and December 31, 2016 , 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 September 30, 2017 and December 31, 2016 , the total unpaid principal balance of loans sold under this program was $1.21 billion and $1.11 billion , respectively. The Company’s reserve liability related to this arrangement totaled $2.0 million and $1.8 million at September 30, 2017 and December 31, 2016 , respectively. There were no actual losses incurred under this arrangement during the three and nine months ended September 30, 2017 and 2016 . 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 $21.97 billion and $19.56 billion as of September 30, 2017 and December 31, 2016 , respectively. At September 30, 2017 and December 31, 2016 , 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 $2.5 million and $3.4 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 September 30, 2017 , 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 loss. As a result, the Company did not have any material amounts reserved for legal claims as of September 30, 2017

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2017
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 2016 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 2016 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 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 7 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and other 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. Estimated fair 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. 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 September 30, 2017 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 152,361 $ — $ 152,361 $ — Commercial 20,215 — 20,215 — Municipal bonds 369,278 — 369,278 — Collateralized mortgage obligations: Residential 184,937 — 184,937 — Commercial 86,817 — 86,817 — Corporate debt securities 28,730 — 28,730 — U.S. Treasury securities 10,750 — 10,750 — Agency 9,763 — 9,763 — Single family mortgage servicing rights 244,106 — — 244,106 Single family loans held for sale 730,042 — 729,951 91 Single family loans held for investment 5,546 — — 5,546 Derivatives Eurodollar futures 135 135 — — Forward sale commitments 3,907 — 3,907 — Interest rate swaptions 2 — 2 — Interest rate lock and purchase loan commitments 21,067 — — 21,067 Interest rate swaps 13,515 — 13,515 — Total assets $ 1,881,171 $ 135 $ 1,610,226 $ 270,810 Liabilities: Derivatives Forward sale commitments $ 3,871 $ — $ 3,871 $ — Interest rate lock and purchase loan commitments 65 — — 65 Interest rate swaps 20,589 — 20,589 — Total liabilities $ 24,525 $ — $ 24,460 $ 65 (in thousands) Fair Value at December 31, 2016 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 177,074 $ — $ 177,074 $ — Commercial 25,536 — 25,536 — Municipal bonds 467,673 — 467,673 — Collateralized mortgage obligations: Residential 191,201 — 191,201 — Commercial 70,764 — 70,764 — Corporate debt securities 51,122 — 51,122 — U.S. Treasury securities 10,620 — 10,620 — Single family mortgage servicing rights 226,113 — — 226,113 Single family loans held for sale 656,334 — 614,524 41,810 Single family loans held for investment 17,988 — — 17,988 Derivatives Forward sale commitments 24,623 — 24,623 — Interest rate swaptions 1 — 1 — Interest rate lock and purchase loan commitments 19,586 — — 19,586 Interest rate swaps 15,016 — 15,016 — Total assets $ 1,953,651 $ — $ 1,648,154 $ 305,497 Liabilities: Derivatives Forward sale commitments $ 15,203 $ — $ 15,203 $ — Interest rate lock and purchase loan commitments 367 — — 367 Interest rate swaps 26,829 — 26,829 — Total liabilities $ 42,399 $ — $ 42,032 $ 367 There were no transfers between levels of the fair value hierarchy during the three and nine months ended September 30, 2017 and 2016 . Level 3 Recurring Fair Value Measurements The Company's level 3 recurring fair value measurements consist of single family mortgage servicing rights, 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 and nine months ended September 30, 2017 and 2016 , see Note 7, 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 $5.5 million at September 30, 2017 . 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 September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,546 Income approach Implied spread to benchmark interest rate curve 3.73% 4.84% 4.13% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 17,988 Income approach Implied spread to benchmark interest rate curve 3.62% 4.97% 4.49% 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 September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 91 Income approach Implied spread to benchmark interest rate curve 4.36% 4.36% 4.36% Market price movement from comparable bond (0.58)% (0.14)% (0.36)% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 41,810 Income approach Implied spread to benchmark interest rate curve 3.46% 6.14% 4.23% Market price movement from comparable bond (0.49)% (0.11)% (0.27)% The following table presents fair value changes and activity for Level 3 interest rate lock and purchase loan commitments. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance, net $ 22,283 $ 39,991 $ 19,219 $ 17,711 Total realized/unrealized gains 36,779 56,752 106,365 160,047 Settlements (38,060 ) (51,383 ) (104,582 ) (132,398 ) Ending balance, net $ 21,002 $ 45,360 $ 21,002 $ 45,360 The following table presents fair value changes and activity for Level 3 loans held for sale and loans held for investment. Three Months Ended September 30, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 29,259 $ 93 $ (303 ) $ (28,913 ) $ (45 ) $ 91 Loans held for investment 5,134 127 303 — (18 ) 5,546 Three Months Ended September 30, 2016 Loans held for sale $ 43,742 $ 4,579 $ (46 ) $ (3,566 ) $ (410 ) $ 44,299 Loans held for investment 22,362 342 46 (2,005 ) (198 ) 20,547 Nine Months Ended September 30, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 41,810 $ 3,088 $ 12,797 $ (58,396 ) $ 792 $ 91 Loans held for investment 17,988 127 (12,272 ) (480 ) 183 5,546 Nine Months Ended September 30, 2016 Loans held for sale $ 49,322 $ 12,698 $ (4,654 ) $ (11,926 ) $ (1,141 ) $ 44,299 Loans held for investment 21,544 601 4,654 (5,782 ) (470 ) 20,547 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 September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 21,002 Income approach Fall-out factor 0.40% 61.46% 14.18% Value of servicing 0.63% 2.14% 1.05% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 19,219 Income approach Fall-out factor 0.50% 60.34% 11.95% Value of servicing 0.65% 2.27% 1.08% 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 and nine months ended September 30, 2017 , the Company recorded adjustments ranging from 7.10% to 100.00% to the appraisal values of certain commercial loans held for investment that are collateralized by real estate. During the three and nine months ended September 30, 2016 , 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 September 30, 2017 , the Company applied a range of stated value adjustments of 42.2% to 100.0% , with a weighted average of 54.8% . During the nine months ended September 30, 2017 , the Company applied a range of stated value adjustments of 0.0% to 100.0% , with a weighted average of 44.8% . During the three months ended September 30, 2016 , the Company applied a stated value adjustment of 7.0% . During the nine months ended September 30, 2016 , the Company applied a range of stated value adjustments of 7.0% to 63.4% , with a weighted average of 58.4% . During the three and nine months ended September 30, 2017 , the Company did not apply any adjustment to the appraisal value of OREO. During the three and nine months ended September 30, 2016 , the Company used a fair value of collateral technique to apply an adjustment to the appraisal value of certain OREO using a range of discount adjustments of 27.40% to 49.10% , with a weighted average rate of 32.10% . 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 and nine months ended September 30, 2017 and 2016 and what we still held at the end of the respective reporting period. At or for the Three Months Ended September 30, 2017 (in thousands) Fair Value of Assets Held at September 30, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,286 $ — $ — $ 2,286 $ (467 ) Other real estate owned (2) 5,521 — — 5,521 (33 ) Total $ 7,807 $ — $ — $ 7,807 $ (500 ) At or for the Three Months Ended September 30, 2016 (in thousands) Fair Value of Assets Held at September 30, 2016 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 10,570 $ — $ — $ 10,570 $ (750 ) Other real estate owned (2) 5,755 — — 5,755 (1,160 ) Total $ 16,325 $ — $ — $ 16,325 $ (1,910 ) At or for the Nine Months Ended September 30, 2017 (in thousands) Fair Value of Assets Held at September 30, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,286 $ — $ — $ 2,286 $ (348 ) Other real estate owned (2) 5,521 — — 5,521 (33 ) Total $ 7,807 $ — $ — $ 7,807 $ (381 ) At or for the Nine Months Ended September 30, 2016 (in thousands) Fair Value of Assets Held at September 30, 2016 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 10,570 $ — $ — $ 10,570 $ (827 ) Other real estate owned (2) 5,755 — — 5,755 (1,551 ) Total $ 16,325 $ — $ — $ 16,325 $ (2,378 ) (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 September 30, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 55,050 $ 55,050 $ 55,050 $ — $ — Investment securities held to maturity 56,608 56,840 — 56,840 — Loans held for investment 4,307,679 4,334,941 — — 4,334,941 Loans held for sale – transferred from held for investment 69,450 69,450 — — 69,450 Loans held for sale – multifamily and other 51,634 51,634 — 51,634 — Mortgage servicing rights – multifamily 23,967 26,117 — — 26,117 Federal Home Loan Bank stock 52,486 52,486 — 52,486 — Liabilities: Deposits $ 4,670,486 $ 4,649,934 $ — $ 4,649,934 $ — Federal Home Loan Bank advances 1,135,245 1,137,651 — 1,137,651 — Long-term debt 125,280 122,696 — 122,696 — At December 31, 2016 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 53,932 $ 53,932 $ 53,932 $ — $ — Investment securities held to maturity 49,861 49,488 — 49,488 — Loans held for investment 3,801,039 3,840,990 — — 3,840,990 Loans held for sale – transferred from held for investment 17,512 17,512 — — 17,512 Loans held for sale – multifamily 40,712 40,712 — 40,712 — Mortgage servicing rights – multifamily 19,747 21,610 — — 21,610 Federal Home Loan Bank stock 40,347 40,347 — 40,347 — Liabilities: Deposits $ 4,429,701 $ 4,410,213 $ — $ 4,410,213 $ — Federal Home Loan Bank advances 868,379 870,782 — 870,782 — Long-term debt 125,147 122,357 — 122,357 —

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE: The following table summarizes the calculation of earnings per share. Three Months Ended September 30, Nine Months Ended September 30, (in thousands, except share and per share data) 2017 2016 2017 2016 Net income $ 13,839 $ 27,701 $ 34,031 $ 55,857 Weighted average shares: Basic weighted-average number of common shares outstanding 26,883,392 24,811,169 26,857,006 24,398,683 Dilutive effect of outstanding common stock equivalents (1) 205,648 185,578 220,026 196,665 Diluted weighted-average number of common stock outstanding 27,089,040 24,996,747 27,077,032 24,595,348 Earnings per share: Basic earnings per share $ 0.51 $ 1.12 $ 1.27 $ 2.29 Diluted earnings per share $ 0.51 $ 1.11 $ 1.26 $ 2.27 (1) Excluded from the computation of diluted earnings per share (due to their antidilutive effect) for the three and nine months ended September 30, 2017 and 2016 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 912 at September 30, 2017 and zero at September 30, 2016

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2017
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 they 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 and through ATMs, 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 property types. We originate multifamily real estate loans through our Fannie Mae DUS ® business, whereby loans are sold to or securitized by Fannie Mae, while the Company generally retains the servicing rights. 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 certain 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 or sold on a servicing-released basis to correspondent lenders. On occasion, we may sell a portion of our MSR portfolio. We reflect the results from the management of 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 September 30, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 5,526 $ 45,314 $ 50,840 Provision for credit losses — 250 250 Noninterest income 71,922 11,962 83,884 Noninterest expense 77,537 37,160 114,697 Income before income taxes (89 ) 19,866 19,777 Income tax expense 34 5,904 5,938 Net income (loss) $ (123 ) $ 13,962 $ 13,839 Total assets $ 1,032,510 $ 5,763,836 $ 6,796,346 Three Months Ended September 30, 2016 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 7,463 $ 39,339 $ 46,802 Provision for credit losses — 1,250 1,250 Noninterest income 101,974 9,771 111,745 Noninterest expense 82,229 32,170 114,399 Income before income taxes 27,208 15,690 42,898 Income tax expense 9,640 5,557 15,197 Net income $ 17,568 $ 10,133 $ 27,701 Total assets $ 1,103,899 $ 5,122,702 $ 6,226,601 Nine Months Ended September 30, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 14,693 $ 128,666 $ 143,359 Provision for credit losses — 750 750 Noninterest income 209,690 29,663 239,353 Noninterest expense 222,554 110,261 332,815 Income before income taxes 1,829 47,318 49,147 Income tax expense 498 14,618 15,116 Net income $ 1,331 $ 32,700 $ 34,031 Total assets $ 1,032,510 $ 5,763,836 $ 6,796,346 Nine Months Ended September 30, 2016 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 18,597 $ 113,378 $ 131,975 Provision for credit losses — 3,750 3,750 Noninterest income 263,334 22,595 285,929 Noninterest expense 223,880 102,903 326,783 Income before income taxes 58,051 29,320 87,371 Income tax expense 20,948 10,566 31,514 Net income $ 37,103 $ 18,754 $ 55,857 Total assets $ 1,103,899 $ 5,122,702 $ 6,226,601 (1)

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income [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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ (5,413 ) $ 9,748 $ (10,412 ) $ (2,449 ) Other comprehensive income (loss) before reclassifications 1,236 (1,786 ) 6,597 10,474 Amounts reclassified from accumulated other comprehensive loss (215 ) (31 ) (577 ) (94 ) Net current-period other comprehensive income (loss) 1,021 (1,817 ) 6,020 10,380 Ending balance $ (4,392 ) $ 7,931 $ (4,392 ) $ 7,931 The following table shows the affected line items in the consolidated statements of operations from reclassifications of unrealized gain 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 Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Gain on sale of investment securities available for sale $ 331 $ 48 $ 888 $ 145 Income tax expense 116 17 311 51 Total, net of tax $ 215 $ 31 $ 577 $ 94

Restructuring

Restructuring	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
RESTRUCTURING	RESTRUCTURING: In September 2017, we i mplemented a restructuring plan in our mortgage banking segment to reduce our operating cost structure and improve efficiency. We recorded a total restructuring charge of $3.9 million , consisting of facility related cost of $3.3 million and severance cost of $545 thousand . We recorded these restructuring charges in the third quarter of 2017. 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 third quarter, and the Company's net remaining liability balance. (in thousands) Facility related costs Personnel related costs Total Balance at June 30, 2017 $ — $ 71 $ 71 Restructuring charges 3,332 545 3,877 Costs paid or otherwise settled (1,279 ) (180 ) (1,459 ) Balance at September 30, 2017 $ 2,053 $ 436 $ 2,489

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS:

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
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 In August 2017 the Financial Accounting Standards Board ('"FASB") issued Accounting Standards Update ("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 Financial Accounting Standards Board ('"FASB") issued Accounting Standards Update ("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. In January 2017, the FASB issued 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. The new standard is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017 with early adoption permitted for transactions that occurred before the issuance date or effective date of the standard if the transactions were not reported in financial statements that have been issued or made available for issuance. The standard must be applied prospectively. Upon adoption, the standard will impact how we assess acquisitions (or disposals) of assets or businesses. Management does not expect the adoption of ASU 2017-01 to have a material impact on its consolidated financial statements. On November 17, 2016, the FASB issued 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. Additionally, amounts for restricted cash and restricted cash equivalents are to be included with cash and cash equivalents if the cash flow statement includes a reconciliation of the total cash balances for a reporting period. This ASU is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early application permitted. Management does not anticipate that this guidance will have a material impact on the Company's consolidated financial statements. On August 26, 2016, the FASB issued 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 amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years and should be applied using a retrospective transition method to each period presented. Early application was permitted upon issuance of the ASU. Management is currently evaluating the impact of this ASU but does not expect this ASU to 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 delays 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 have 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. In January 2016, FASB issued 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 amendments in this ASU are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the provisions of ASU No. 2016-01 to determine the potential impact the new standard will have on the Company's Consolidated Financial Statements. In May 2014, the FASB issued 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 September 30, 2017
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 MSRs, the Company utilizes derivatives, such as forward sale commitments, futures, option contracts, interest rate swaps and "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 September 30, 2017 or December 31, 2016 . 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 statement of financial condition. Refer to Note 3, Investment Securities,
Mortgage Banking Operations	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.
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 2016 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 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 7 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and other 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. Estimated fair 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. 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.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 155,490 $ 8 $ (3,137 ) $ 152,361 Commercial 20,410 23 (218 ) 20,215 Municipal bonds 368,921 3,496 (3,139 ) 369,278 Collateralized mortgage obligations: Residential 187,458 331 (2,852 ) 184,937 Commercial 87,382 187 (752 ) 86,817 Corporate debt securities 29,173 74 (517 ) 28,730 U.S. Treasury securities 10,896 — (146 ) 10,750 Agency debentures 9,857 — (94 ) 9,763 $ 869,587 $ 4,119 $ (10,855 ) $ 862,851 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,579 $ 75 $ (55 ) $ 12,599 Commercial 21,108 125 (77 ) 21,156 Collateralized mortgage obligations 3,492 — (18 ) 3,474 Municipal bonds 19,330 327 (145 ) 19,512 Corporate debt securities 99 — — 99 $ 56,608 $ 527 $ (295 ) $ 56,840 At December 31, 2016 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 181,158 $ 31 $ (4,115 ) $ 177,074 Commercial 25,896 13 (373 ) 25,536 Municipal bonds 473,153 1,333 (6,813 ) 467,673 Collateralized mortgage obligations: Residential 194,982 32 (3,813 ) 191,201 Commercial 71,870 29 (1,135 ) 70,764 Corporate debt securities 52,045 110 (1,033 ) 51,122 U.S. Treasury securities 10,882 — (262 ) 10,620 $ 1,009,986 $ 1,548 $ (17,544 ) $ 993,990 HELD TO MATURITY Mortgage-backed securities: Residential $ 13,844 $ 71 $ (90 ) $ 13,825 Commercial 16,303 70 (64 ) 16,309 Municipal bonds 19,612 99 (459 ) 19,252 Corporate debt securities 102 — — 102 $ 49,861 $ 240 $ (613 ) $ 49,488
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 September 30, 2017 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 155,490 $ 8 $ (3,137 ) $ 152,361 Commercial 20,410 23 (218 ) 20,215 Municipal bonds 368,921 3,496 (3,139 ) 369,278 Collateralized mortgage obligations: Residential 187,458 331 (2,852 ) 184,937 Commercial 87,382 187 (752 ) 86,817 Corporate debt securities 29,173 74 (517 ) 28,730 U.S. Treasury securities 10,896 — (146 ) 10,750 Agency debentures 9,857 — (94 ) 9,763 $ 869,587 $ 4,119 $ (10,855 ) $ 862,851 HELD TO MATURITY Mortgage-backed securities: Residential $ 12,579 $ 75 $ (55 ) $ 12,599 Commercial 21,108 125 (77 ) 21,156 Collateralized mortgage obligations 3,492 — (18 ) 3,474 Municipal bonds 19,330 327 (145 ) 19,512 Corporate debt securities 99 — — 99 $ 56,608 $ 527 $ (295 ) $ 56,840 At December 31, 2016 (in thousands) Amortized Gross Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ 181,158 $ 31 $ (4,115 ) $ 177,074 Commercial 25,896 13 (373 ) 25,536 Municipal bonds 473,153 1,333 (6,813 ) 467,673 Collateralized mortgage obligations: Residential 194,982 32 (3,813 ) 191,201 Commercial 71,870 29 (1,135 ) 70,764 Corporate debt securities 52,045 110 (1,033 ) 51,122 U.S. Treasury securities 10,882 — (262 ) 10,620 $ 1,009,986 $ 1,548 $ (17,544 ) $ 993,990 HELD TO MATURITY Mortgage-backed securities: Residential $ 13,844 $ 71 $ (90 ) $ 13,825 Commercial 16,303 70 (64 ) 16,309 Municipal bonds 19,612 99 (459 ) 19,252 Corporate debt securities 102 — — 102 $ 49,861 $ 240 $ (613 ) $ 49,488
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 September 30, 2017 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 $ (2,330 ) $ 119,404 $ (807 ) $ 31,548 $ (3,137 ) $ 150,952 Commercial (60 ) 12,653 (158 ) 2,899 (218 ) 15,552 Municipal bonds (2,324 ) 163,838 (815 ) 52,010 (3,139 ) 215,848 Collateralized mortgage obligations: Residential (1,195 ) 92,065 (1,657 ) 58,595 (2,852 ) 150,660 Commercial (456 ) 51,910 (296 ) 9,423 (752 ) 61,333 Corporate debt securities (180 ) 6,227 (337 ) 8,450 (517 ) 14,677 U.S. Treasury securities (146 ) 10,750 — — (146 ) 10,750 Agency debentures (94 ) 9,763 — — (94 ) 9,763 $ (6,785 ) $ 466,610 $ (4,070 ) $ 162,925 $ (10,855 ) $ 629,535 HELD TO MATURITY Mortgage-backed securities: Residential $ (55 ) $ 4,778 $ — $ — $ (55 ) $ 4,778 Commercial (77 ) 9,512 — — (77 ) 9,512 Collateralized mortgage obligations (18 ) 3,474 — — (18 ) 3,474 Municipal bonds (70 ) 5,247 (75 ) 5,386 (145 ) 10,633 $ (220 ) $ 23,011 $ (75 ) $ 5,386 $ (295 ) $ 28,397 At December 31, 2016 Less than 12 months 12 months or more Total (in thousands) Gross Fair Gross Fair Gross Fair AVAILABLE FOR SALE Mortgage-backed securities: Residential $ (3,842 ) $ 144,240 $ (273 ) $ 9,907 $ (4,115 ) $ 154,147 Commercial (373 ) 23,798 — — (373 ) 23,798 Municipal bonds (6,813 ) 283,531 — — (6,813 ) 283,531 Collateralized mortgage obligations: Residential (3,052 ) 175,490 (761 ) 11,422 (3,813 ) 186,912 Commercial (1,005 ) 60,926 (130 ) 5,349 (1,135 ) 66,275 Corporate debt securities (472 ) 24,447 (561 ) 11,677 (1,033 ) 36,124 U.S. Treasury securities (262 ) 10,620 — — (262 ) 10,620 $ (15,819 ) $ 723,052 $ (1,725 ) $ 38,355 $ (17,544 ) $ 761,407 HELD TO MATURITY Mortgage-backed securities: Residential $ (90 ) $ 5,481 $ — $ — $ (90 ) $ 5,481 Commercial (64 ) 13,156 — — (64 ) 13,156 Municipal bonds (459 ) 11,717 — — (459 ) 11,717 $ (613 ) $ 30,354 $ — $ — $ (613 ) $ 30,354
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 September 30, 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 $ — — % $ — — % $ 10,319 1.65 % $ 142,042 1.98 % $ 152,361 1.95 % Commercial — — 15,606 2.09 4,609 2.04 — — 20,215 2.08 Municipal bonds 1,622 3.00 26,236 3.22 42,055 3.15 299,365 3.80 369,278 3.68 Collateralized mortgage obligations: Residential — — — — 1,063 1.80 183,874 2.05 184,937 2.05 Commercial — — 13,091 2.09 22,280 2.33 51,446 2.05 86,817 2.12 Agency debentures — — — — 9,763 2.29 — — 9,763 2.29 Corporate debt securities — — 7,678 2.72 11,020 3.46 10,032 3.54 28,730 3.30 U.S. Treasury securities 1,000 1.22 — — 9,750 1.78 — — 10,750 1.73 Total available for sale $ 2,622 2.32 % $ 62,611 2.63 % $ 110,859 2.62 % $ 686,759 2.81 % $ 862,851 2.77 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 12,599 2.95 % $ 12,599 2.95 % Commercial — — 4,499 2.03 16,657 2.69 — — 21,156 2.55 Collateralized mortgage obligations — — — — — — 3,474 1.75 3,474 1.75 Municipal bonds — — 1,164 2.93 5,402 2.79 12,946 3.40 19,512 3.21 Corporate debt securities — — — — — — 99 6.00 99 6.00 Total held to maturity $ — — % $ 5,663 2.21 % $ 22,059 2.71 % $ 29,118 3.02 % $ 56,840 2.82 % At December 31, 2016 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 $ 1 0.29 % $ — — % $ 2,122 1.59 % $ 174,951 2.03 % $ 177,074 2.02 % Commercial — — 20,951 2.13 4,585 2.06 — — 25,536 2.11 Municipal bonds 3,479 3.30 20,939 2.94 52,043 2.55 391,212 3.08 467,673 3.02 Collateralized mortgage obligations: Residential — — — — 1,639 1.32 189,562 2.06 191,201 2.06 Commercial — — 10,860 1.84 19,273 2.74 40,631 1.91 70,764 2.12 Corporate debt securities — — 10,516 2.67 21,493 3.74 19,113 3.54 51,122 3.45 U.S. Treasury securities 999 0.64 — — 9,621 1.76 — — 10,620 1.66 Total available for sale $ 4,479 2.70 % $ 63,266 2.43 % $ 110,776 2.69 % $ 815,469 2.57 % $ 993,990 2.57 % HELD TO MATURITY Mortgage-backed securities: Residential $ — — % $ — — % $ — — % $ 13,825 3.11 % $ 13,825 3.11 % Commercial — — 4,581 2.06 11,728 2.71 — — 16,309 2.53 Municipal bonds — — — — 6,450 2.73 12,802 3.31 19,252 3.11 Corporate debt securities — — — — — — 102 6.00 102 6.00 Total held to maturity $ — — % $ 4,581 2.06 % $ 18,178 2.72 % $ 26,729 3.22 % $ 49,488 2.93 %
Sales of investment securities available for sale	Sales of investment securities available for sale were as follows. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Proceeds $ 27,827 $ 9,641 $ 342,460 $ 21,108 Gross gains 331 48 907 145 Gross losses — — (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 September 30, Federal Home Loan Bank to secure borrowings $ 196,363 Washington and California State to secure public deposits 37,456 Securities pledged to secure derivatives in a liability position 7,563 Other securities pledged 6,634 Total securities pledged as collateral $ 248,016

Loans and Credit Quality (Table

Loans and Credit Quality (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans held for investment	Loans held for investment consist of the following: (in thousands) At September 30, At December 31, Consumer loans Single family (1) $ 1,269,484 $ 1,083,822 Home equity and other 436,755 359,874 1,706,239 1,443,696 Commercial loans Commercial real estate 986,421 871,563 Multifamily 747,171 674,219 Construction/land development 653,132 636,320 Commercial business 245,859 223,653 2,632,583 2,405,755 4,338,822 3,849,451 Net deferred loan fees and costs 11,458 3,577 4,350,280 3,853,028 Allowance for loan losses (37,055 ) (34,001 ) $ 4,313,225 $ 3,819,027 (1) Includes $5.5 million and $18.0 million at September 30, 2017 and December 31, 2016 , 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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Allowance for credit losses (roll-forward): Beginning balance $ 37,470 $ 34,001 $ 35,264 $ 30,659 Provision for credit losses 250 1,250 750 3,750 Recoveries, net of charge-offs 475 (18 ) 2,181 824 Ending balance $ 38,195 $ 35,233 $ 38,195 $ 35,233 Components: Allowance for loan losses $ 37,055 $ 33,975 $ 37,055 $ 33,975 Allowance for unfunded commitments 1,140 1,258 1,140 1,258 Allowance for credit losses $ 38,195 $ 35,233 $ 38,195 $ 35,233
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 September 30, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,288 $ — $ 2 $ 791 $ 9,081 Home equity and other 6,856 (72 ) 428 (219 ) 6,993 15,144 (72 ) 430 572 16,074 Commercial loans Commercial real estate 7,455 — — 46 7,501 Multifamily 4,059 — — (3 ) 4,056 Construction/land development 8,226 — 172 (451 ) 7,947 Commercial business 2,586 (201 ) 146 86 2,617 22,326 (201 ) 318 (322 ) 22,121 Total allowance for credit losses $ 37,470 $ (273 ) $ 748 $ 250 $ 38,195 Three Months Ended September 30, 2016 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,294 $ (42 ) $ 1 $ 995 $ 9,248 Home equity and other 5,400 (356 ) 192 512 5,748 13,694 (398 ) 193 1,507 14,996 Commercial loans Commercial real estate 6,045 — — 80 6,125 Multifamily 2,048 — — 49 2,097 Construction/land development 9,369 — 176 (524 ) 9,021 Commercial business 2,845 — 11 138 2,994 20,307 — 187 (257 ) 20,237 Total allowance for credit losses $ 34,001 $ (398 ) $ 380 $ 1,250 $ 35,233 Nine Months Ended September 30, 2017 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,196 $ (2 ) $ 1,018 $ (131 ) $ 9,081 Home equity and other 6,153 (583 ) 781 642 6,993 14,349 (585 ) 1,799 511 16,074 Commercial loans Commercial real estate 6,680 — — 821 7,501 Multifamily 3,086 — — 970 4,056 Construction/land development 8,553 — 606 (1,212 ) 7,947 Commercial business 2,596 (217 ) 578 (340 ) 2,617 20,915 (217 ) 1,184 239 22,121 Total allowance for credit losses $ 35,264 $ (802 ) $ 2,983 $ 750 $ 38,195 Nine Months Ended September 30, 2016 (in thousands) Beginning Charge-offs Recoveries (Reversal of) Provision Ending Consumer loans Single family $ 8,942 $ (74 ) $ 87 $ 293 $ 9,248 Home equity and other 4,620 (654 ) 530 1,252 5,748 13,562 (728 ) 617 1,545 14,996 Commercial loans Commercial real estate 4,847 — — 1,278 6,125 Multifamily 1,194 — — 903 2,097 Construction/land development 9,271 (42 ) 959 (1,167 ) 9,021 Commercial business 1,785 (26 ) 44 1,191 2,994 17,097 (68 ) 1,003 2,205 20,237 Total allowance for credit losses $ 30,659 $ (796 ) $ 1,620 $ 3,750 $ 35,233
Recorded investment in loans by Impairment Methodology	The following table disaggregates our allowance for credit losses and recorded investment in loans by impairment methodology. At September 30, 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 $ 8,727 $ 354 $ 9,081 $ 1,184,497 $ 79,441 $ 1,263,938 Home equity and other 6,946 47 6,993 435,454 1,301 436,755 15,673 401 16,074 1,619,951 80,742 1,700,693 Commercial loans Commercial real estate 7,501 — 7,501 983,859 2,562 986,421 Multifamily 4,056 — 4,056 746,349 822 747,171 Construction/land development 7,947 — 7,947 652,125 1,007 653,132 Commercial business 2,215 402 2,617 243,593 2,266 245,859 21,719 402 22,121 2,625,926 6,657 2,632,583 Total loans evaluated for impairment 37,392 803 38,195 4,245,877 87,399 4,333,276 Loans held for investment carried at fair value $ 5,416 $ 130 5,546 (1) Total loans held for investment $ 37,392 $ 803 $ 38,195 $ 4,251,293 $ 87,529 $ 4,338,822 (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. At December 31, 2016 (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 $ 7,871 $ 325 $ 8,196 $ 985,219 $ 80,676 $ 1,065,895 Home equity and other 6,104 49 6,153 358,350 1,463 359,813 13,975 374 14,349 1,343,569 82,139 1,425,708 Commercial loans Commercial real estate 6,680 — 6,680 869,225 2,338 871,563 Multifamily 3,086 — 3,086 673,374 845 674,219 Construction/land development 8,553 — 8,553 634,427 1,893 636,320 Commercial business 2,591 5 2,596 220,360 3,293 223,653 20,910 5 20,915 2,397,386 8,369 2,405,755 Total loans evaluated for impairment 34,885 379 35,264 3,740,955 90,508 3,831,463 Loans held for investment carried at fair value 17,988 (1) Total loans held for investment $ 34,885 $ 379 $ 35,264 $ 3,740,955 $ 90,508 $ 3,849,451 (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 September 30, 2017 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 75,396 $ 77,012 $ — Home equity and other 787 813 — 76,183 77,825 — Commercial loans Commercial real estate 2,562 3,090 — Multifamily 822 842 — Construction/land development 1,007 1,549 — Commercial business 440 1,456 — 4,831 6,937 — $ 81,014 $ 84,762 $ — With an allowance recorded: Consumer loans Single family $ 4,175 $ 4,267 $ 354 Home equity and other 514 514 47 4,689 4,781 401 Commercial loans Commercial business 1,826 1,874 402 $ 6,515 $ 6,655 $ 803 Total: Consumer loans Single family (3) $ 79,571 $ 81,279 $ 354 Home equity and other 1,301 1,327 47 80,872 82,606 401 Commercial loans Commercial real estate 2,562 3,090 — Multifamily 822 842 — Construction/land development 1,007 1,549 — Commercial business 2,266 3,330 402 6,657 8,811 402 Total impaired loans $ 87,529 $ 91,417 $ 803 (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 $73.7 million in single family performing trouble debt restructurings "TDRs". At December 31, 2016 (in thousands) Recorded investment (1) Unpaid principal balance (2) Related allowance With no related allowance recorded: Consumer loans Single family $ 77,756 $ 80,573 $ — Home equity and other 946 977 — 78,702 81,550 — Commercial loans Commercial real estate 2,338 2,846 — Multifamily 845 851 — Construction/land development 1,893 2,819 — Commercial business 2,945 4,365 — 8,021 10,881 — $ 86,723 $ 92,431 $ — With an allowance recorded: Consumer loans Single family $ 2,920 $ 3,011 $ 325 Home equity and other 517 517 49 3,437 3,528 374 Commercial loans Commercial business 348 347 5 348 347 5 $ 3,785 $ 3,875 $ 379 Total: Consumer loans Single family (3) $ 80,676 $ 83,584 $ 325 Home equity and other 1,463 1,494 49 82,139 85,078 374 Commercial loans Commercial real estate 2,338 2,846 — Multifamily 845 851 — Construction/land development 1,893 2,819 — Commercial business 3,293 4,712 5 8,369 11,228 5 Total impaired loans $ 90,508 $ 96,306 $ 379 (1) Includes partial charge-offs and nonaccrual interest paid. (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 $73.1 million in single family performing TDRs.
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. (in thousands) Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 Consumer loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Single family $ 81,770 $ 738 $ 85,138 $ 727 Home equity and other 1,501 19 1,371 17 83,271 757 86,509 744 Commercial loans Commercial real estate 2,960 33 3,431 4 Multifamily 825 6 621 6 Construction/land development 1,015 21 2,333 23 Commercial business 2,045 30 4,068 15 6,845 90 10,453 48 $ 90,116 $ 847 $ 96,962 $ 792 (in thousands) Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 Consumer loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Single family $ 81,889 $ 2,278 $ 83,271 $ 2,171 Home equity and other 1,475 62 1,479 50 83,364 2,340 84,750 2,221 Commercial loans Commercial real estate 3,446 129 3,439 12 Multifamily 833 18 1,877 41 Construction/land development 1,277 68 3,023 67 Commercial business 2,579 113 3,902 56 8,135 328 12,241 176 $ 91,499 $ 2,668 $ 96,991 $ 2,397
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 September 30, 2017 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,241,538 (1) $ 2,853 $ 13,510 $ 11,583 $ 1,269,484 Home equity and other 434,377 248 660 1,470 436,755 1,675,915 3,101 14,170 13,053 1,706,239 Commercial loans Commercial real estate 945,951 29,487 7,868 3,115 986,421 Multifamily 734,472 10,501 1,884 314 747,171 Construction/land development 645,968 5,731 1,433 — 653,132 Commercial business 198,687 42,290 1,587 3,295 245,859 2,525,078 88,009 12,772 6,724 2,632,583 $ 4,200,993 $ 91,110 $ 26,942 $ 19,777 $ 4,338,822 (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. At December 31, 2016 (in thousands) Pass Watch Special mention Substandard Total Consumer loans Single family $ 1,051,463 (1) $ 4,348 $ 15,172 $ 12,839 $ 1,083,822 Home equity and other 357,191 597 514 1,572 359,874 1,408,654 4,945 15,686 14,411 1,443,696 Commercial loans Commercial real estate 809,996 52,519 7,165 1,883 871,563 Multifamily 660,234 13,140 508 337 674,219 Construction/land development 615,675 16,074 3,083 1,488 636,320 Commercial business 171,883 42,767 3,385 5,618 223,653 2,257,788 124,500 14,141 9,326 2,405,755 $ 3,666,442 $ 129,445 $ 29,827 $ 23,737 $ 3,849,451 (1) Includes $18.0 million
Past due loans by portfolio segment and loan class	The following table presents an aging analysis of past due loans by loan portfolio segment and loan class. At September 30, 2017 (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 $ 8,851 $ 4,615 $ 48,647 $ 62,113 $ 1,207,371 (1) $ 1,269,484 $ 37,185 (2) Home equity and other 674 121 1,470 2,265 434,490 436,755 — 9,525 4,736 50,117 64,378 1,641,861 1,706,239 37,185 Commercial loans Commercial real estate 913 — 724 1,637 984,784 986,421 — Multifamily — — 314 314 746,857 747,171 — Construction/land development 992 — — 992 652,140 653,132 — Commercial business 897 — 1,153 2,050 243,809 245,859 — 2,802 — 2,191 4,993 2,627,590 2,632,583 — $ 12,327 $ 4,736 $ 52,308 $ 69,371 $ 4,269,451 $ 4,338,822 $ 37,185 At December 31, 2016 (in thousands) 30-59 days 60-89 days 90 days or Total past Current Total 90 days or Consumer loans Single family $ 4,310 $ 5,459 $ 53,563 $ 63,332 $ 1,020,490 (1) $ 1,083,822 $ 40,846 (2) Home equity and other 251 442 1,571 2,264 357,610 359,874 — 4,561 5,901 55,134 65,596 1,378,100 1,443,696 40,846 Commercial loans Commercial real estate 71 205 2,127 2,403 869,160 871,563 — Multifamily — — 337 337 673,882 674,219 — Construction/land development — — 1,376 1,376 634,944 636,320 — Commercial business 202 — 2,414 2,616 221,037 223,653 — 273 205 6,254 6,732 2,399,023 2,405,755 — $ 4,834 $ 6,106 $ 61,388 $ 72,328 $ 3,777,123 $ 3,849,451 $ 40,846 (1) Includes $5.5 million and $18.0 million of loans at September 30, 2017 and December 31, 2016 , 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 the 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 and are a subset of the 90 days or more past due balance.
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 September 30, 2017 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,258,022 (1) $ 11,462 $ 1,269,484 Home equity and other 435,285 1,470 436,755 1,693,307 12,932 1,706,239 Commercial loans Commercial real estate 985,697 724 986,421 Multifamily 746,857 314 747,171 Construction/land development 653,132 — 653,132 Commercial business 244,706 1,153 245,859 2,630,392 2,191 2,632,583 $ 4,323,699 $ 15,123 $ 4,338,822 At December 31, 2016 (in thousands) Accrual Nonaccrual Total Consumer loans Single family $ 1,071,105 (1) $ 12,717 $ 1,083,822 Home equity and other 358,303 1,571 359,874 1,429,408 14,288 1,443,696 Commercial loans Commercial real estate 869,436 2,127 871,563 Multifamily 673,882 337 674,219 Construction/land development 634,944 1,376 636,320 Commercial business 221,239 2,414 223,653 2,399,501 6,254 2,405,755 $ 3,828,909 $ 20,542 $ 3,849,451 (1) Includes $5.5 million and $18.0 million of loans at September 30, 2017 and December 31, 2016 , 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 September 30, 2017 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 9 $ 1,914 $ — Payment restructure 29 5,911 — Total consumer Interest rate reduction 9 1,914 — Payment restructure 29 5,911 — 38 7,825 — Total loans Interest rate reduction 9 1,914 — Payment restructure 29 5,911 — 38 $ 7,825 $ — Three Months Ended September 30, 2016 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 11 $ 2,492 $ — Payment restructure 12 2,773 — Home equity and other Interest rate reduction 1 100 — Total consumer Interest rate reduction 12 2,592 — Payment restructure 12 2,773 — 24 5,365 — Total loans Interest rate reduction 12 2,592 — Payment restructure 12 2,773 — 24 $ 5,365 $ — Nine Months Ended September 30, 2017 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 48 $ 8,834 $ — Payment restructure 71 14,803 — Home equity and other Payment restructure 2 351 — Total consumer Interest rate reduction 48 8,834 — Payment restructure 73 15,154 — 121 23,988 — Commercial loans Construction/land development Payment restructure 1 436 — Commercial business Payment restructure 1 18 — Total commercial Payment restructure 2 454 — 2 454 — Total loans Interest rate reduction 48 8,834 — Payment restructure 75 15,608 — 123 $ 24,442 $ — Nine Months Ended September 30, 2016 (dollars in thousands) Concession type Number of loan Recorded Related charge- Consumer loans Single family Interest rate reduction 29 $ 5,881 $ — Payment restructure 46 9,691 — Home equity and other Interest rate reduction 2 113 — Total consumer Interest rate reduction 31 5,994 — Payment restructure 46 9,691 — 77 15,685 — Total loans Interest rate reduction 31 5,994 — Payment restructure 46 9,691 — 77 $ 15,685 $ —
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 and nine months ended September 30, 2017 and 2016 , 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 September 30, 2017 2016 (dollars in thousands) Number of loan relationships that re-defaulted Recorded Number of loan relationships that re-defaulted Recorded Consumer loans Single family 8 $ 1,743 7 $ 1,173 8 $ 1,743 7 $ 1,173 Nine Months Ended September 30, 2017 2016 (dollars in thousands) Number of loan relationships that re-defaulted Recorded Number of loan relationships that re-defaulted Recorded Consumer loans Single family 16 $ 3,395 16 $ 3,811 Home equity and other — — 1 93 16 $ 3,395 17 $ 3,904

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Deposit balances, including stated rates	Deposit balances, including stated rates, were as follows. (in thousands) At September 30, At December 31, Noninterest-bearing accounts $ 1,087,425 $ 964,829 NOW accounts, 0.00% to 1.00% at September 30, 2017 and December 31, 2016 528,679 468,812 Statement savings accounts, due on demand, 0.05% to 1.13% at September 30, 2017 and December 31, 2016 308,217 301,361 Money market accounts, due on demand, 0.00% to 1.70% and at September 30, 2017 and December 31, 2016 1,563,921 1,603,141 Certificates of deposit, 0.05% to 3.80% at September 30, 2017 and December 31, 2016 1,182,244 1,091,558 $ 4,670,486 $ 4,429,701
Interest expense on deposits	Interest expense on deposits was as follows. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 NOW accounts $ 500 $ 484 $ 1,480 $ 1,465 Statement savings accounts 256 262 761 771 Money market accounts 2,089 2,084 6,254 5,057 Certificates of deposit 3,175 2,532 9,015 6,087 $ 6,020 $ 5,362 $ 17,510 $ 13,380
Certificates of deposit outstanding	Certificates of deposit outstanding mature as follows. (in thousands) At September 30, Within one year $ 854,650 One to two years 267,893 Two to three years 31,851 Three to four years 13,714 Four to five years 14,051 Thereafter 85 $ 1,182,244

Derivatives and Hedging Activ27

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, 2017 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 2,127,585 $ 3,907 $ (3,871 ) Interest rate swaptions 215,000 2 — Interest rate lock and purchase loan commitments 722,048 21,067 (65 ) Interest rate swaps 2,030,150 13,515 (20,589 ) Eurodollar futures 2,526,000 135 — Total derivatives before netting $ 7,620,783 38,626 (24,525 ) Netting adjustment/Cash collateral (1) 3,993 22,853 Carrying value on consolidated statements of financial condition $ 42,619 $ (1,672 ) (1) Includes cash collateral of $26.8 million at September 30, 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. At December 31, 2016 Notional amount Fair value derivatives (in thousands) Asset Liability Forward sale commitments $ 3,596,677 $ 24,623 $ (15,203 ) Interest rate swaptions 20,000 1 — Interest rate lock and purchase loan commitments 746,102 19,586 (367 ) Interest rate swaps 1,689,850 15,016 (26,829 ) Total derivatives before netting $ 6,052,629 59,226 (42,399 ) Netting adjustment/Cash collateral (1) 10,174 37,836 Carrying value on consolidated statements of financial condition $ 69,400 $ (4,563 ) (1) Includes cash collateral of $48.0 million at December 31, 2016 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 September 30, 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 $ 38,626 $ 3,993 $ 42,619 $ — $ 42,619 Derivative liabilities $ (24,525 ) $ 22,853 $ (1,672 ) $ 154 $ (1,518 ) At December 31, 2016 (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 $ 59,226 $ 10,174 $ 69,400 $ — $ 69,400 Derivative liabilities $ (42,399 ) $ 37,836 $ (4,563 ) $ 1,820 $ (2,743 ) (1) Includes cash collateral of $26.8 million and $48.0 million at September 30, 2017 and December 31, 2016
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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Recognized in noninterest income: Net gain (loss) on loan origination and sale activities (1) $ (9,180 ) $ (3,675 ) $ (20,788 ) $ (4,006 ) Loan servicing income (2) 2,807 3,162 12,060 57,110 Other (3) — 2,087 — 735 $ (6,373 ) $ 1,574 $ (8,728 ) $ 53,839 (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. (3)

Mortgage Banking Operations (Ta

Mortgage Banking Operations (Tables)	9 Months Ended
	Sep. 30, 2017
Mortgage Banking [Abstract]
Mortgage loans on real estate, by loan	Loans held for sale consisted of the following. (in thousands) At September 30, At December 31, Single family $ 730,042 $ 656,334 Multifamily DUS ® (1) 47,014 35,506 Other (2) 74,070 22,719 Total loans held for sale $ 851,126 $ 714,559 (1) Fannie Mae Multifamily Delegated Underwriting and Servicing Program (“DUS" ® ) is a registered trademark of Fannie Mae. (2) Includes multifamily and commercial loans originated from sources other than DUS ® . Loans sold consisted of the following. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Single family $ 1,956,129 $ 2,489,415 $ 5,504,366 $ 6,134,390 Multifamily DUS ® 102,075 58,484 214,236 215,848 Other (1) 125,493 50,255 163,374 82,068 Total loans sold $ 2,183,697 $ 2,598,154 $ 5,881,976 $ 6,432,306 (1) Includes multifamily and commercial loans originated from sources other than DUS ®
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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Single family: Servicing value and secondary market gains (1) $ 56,657 $ 79,946 $ 164,548 $ 207,758 Loan origination and administration fees 7,356 8,931 19,960 21,614 Total single family 64,013 88,877 184,508 229,372 Multifamily DUS ® 4,152 2,695 8,785 7,879 Other (2) 2,845 1,028 3,906 2,242 Total gain on loan origination and sale activities $ 71,010 $ 92,600 $ 197,199 $ 239,493 (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. (2) Includes multifamily and commercial loans originated from sources other than DUS ® .
Company's portfolio of loans serviced for others	The composition of loans serviced for others is presented below at the unpaid principal balance. (in thousands) At September 30, At December 31, Single family U.S. government and agency $ 21,378,395 $ 18,931,835 Other 513,858 556,621 21,892,253 19,488,456 Commercial Multifamily DUS ® 1,213,459 1,108,040 Other 78,674 69,323 1,292,133 1,177,363 Total loans serviced for others $ 23,184,386 $ 20,665,819
Mortgage repurchase losses	The following is a summary of changes in the Company's liability for estimated mortgage repurchase losses. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Balance, beginning of period $ 2,990 $ 3,379 $ 3,382 $ 2,922 Additions (reductions), net (1) (338 ) 495 (370 ) 1,407 Realized losses (2) (148 ) (251 ) (508 ) (706 ) Balance, end of period $ 2,504 $ 3,623 $ 2,504 $ 3,623 (1) Includes additions for new loan sales and changes in estimated probable future repurchase losses on previously sold loans. (2)
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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Servicing income, net: Servicing fees and other $ 16,480 $ 14,104 $ 48,636 $ 39,460 Changes in fair value of single family MSRs due to modeled amortization (1) (9,167 ) (8,925 ) (26,596 ) (23,940 ) Amortization of multifamily MSRs (811 ) (661 ) (2,503 ) (1,946 ) 6,502 4,518 19,537 13,574 Risk management, single family MSRs: Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) (1,027 ) 4,915 (5,312 ) (37,354 ) Net gain from derivatives economically hedging MSR 2,807 3,162 12,060 57,110 1,780 8,077 6,748 19,756 Mortgage servicing income $ 8,282 $ 12,595 $ 26,285 $ 33,330 (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 September 30, Nine Months Ended September 30, (rates per annum) (1) 2017 2016 2017 2016 Constant prepayment rate ("CPR") (2) 13.24 % 14.77 % 13.34 % 15.67 % Discount rate (3) 10.28 % 10.19 % 10.29 % 10.34 % (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 September 30, 2017 Fair value of single family MSR $ 244,106 Expected weighted-average life (in years) 5.96 Constant prepayment rate (1) 13.09 % Impact on 25 basis points adverse change in interest rates $ (18,776 ) Impact on 50 basis points adverse change in interest rates $ (39,646 ) Discount rate 10.40 % Impact on fair value of 100 basis points increase $ (8,442 ) Impact on fair value of 200 basis points increase $ (16,324 ) (1) Represents the expected lifetime average.
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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ 236,621 $ 130,900 $ 226,113 $ 156,604 Additions and amortization: Originations 17,679 23,020 49,345 54,600 Purchases — — 565 — Changes due to modeled amortization (1) (9,167 ) (8,925 ) (26,596 ) (23,940 ) Net additions and amortization 8,512 14,095 23,314 30,660 Changes in fair value of MSRs due to changes in market inputs and/or model updates (2) (1,027 ) 4,915 (5,321 ) (37,354 ) Ending balance $ 244,106 $ 149,910 $ 244,106 $ 149,910 (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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ 21,600 $ 16,366 $ 19,747 $ 14,651 Origination 3,177 1,886 6,722 4,886 Amortization (811 ) (661 ) (2,503 ) (1,946 ) Ending balance $ 23,966 $ 17,591 $ 23,966 $ 17,591
Projected amortization expense for the gross carrying value of multifamily MSRs	At September 30, 2017 , the expected weighted-average life of the Company’s multifamily MSRs was 10.28 years . Projected amortization expense for the gross carrying value of multifamily MSRs is estimated as follows. (in thousands) At September 30, 2017 Remainder of 2017 $ 824 2018 3,254 2019 3,152 2020 3,078 2021 2,868 2022 and thereafter 10,790 Carrying value of multifamily MSR $ 23,966

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2017
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 2016 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 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 7 , Mortgage Banking Operations . Level 3 recurring fair value measurement. Multifamily MSRs and other 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. Estimated fair 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. 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 September 30, 2017 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 152,361 $ — $ 152,361 $ — Commercial 20,215 — 20,215 — Municipal bonds 369,278 — 369,278 — Collateralized mortgage obligations: Residential 184,937 — 184,937 — Commercial 86,817 — 86,817 — Corporate debt securities 28,730 — 28,730 — U.S. Treasury securities 10,750 — 10,750 — Agency 9,763 — 9,763 — Single family mortgage servicing rights 244,106 — — 244,106 Single family loans held for sale 730,042 — 729,951 91 Single family loans held for investment 5,546 — — 5,546 Derivatives Eurodollar futures 135 135 — — Forward sale commitments 3,907 — 3,907 — Interest rate swaptions 2 — 2 — Interest rate lock and purchase loan commitments 21,067 — — 21,067 Interest rate swaps 13,515 — 13,515 — Total assets $ 1,881,171 $ 135 $ 1,610,226 $ 270,810 Liabilities: Derivatives Forward sale commitments $ 3,871 $ — $ 3,871 $ — Interest rate lock and purchase loan commitments 65 — — 65 Interest rate swaps 20,589 — 20,589 — Total liabilities $ 24,525 $ — $ 24,460 $ 65 (in thousands) Fair Value at December 31, 2016 Level 1 Level 2 Level 3 Assets: Investment securities available for sale Mortgage backed securities: Residential $ 177,074 $ — $ 177,074 $ — Commercial 25,536 — 25,536 — Municipal bonds 467,673 — 467,673 — Collateralized mortgage obligations: Residential 191,201 — 191,201 — Commercial 70,764 — 70,764 — Corporate debt securities 51,122 — 51,122 — U.S. Treasury securities 10,620 — 10,620 — Single family mortgage servicing rights 226,113 — — 226,113 Single family loans held for sale 656,334 — 614,524 41,810 Single family loans held for investment 17,988 — — 17,988 Derivatives Forward sale commitments 24,623 — 24,623 — Interest rate swaptions 1 — 1 — Interest rate lock and purchase loan commitments 19,586 — — 19,586 Interest rate swaps 15,016 — 15,016 — Total assets $ 1,953,651 $ — $ 1,648,154 $ 305,497 Liabilities: Derivatives Forward sale commitments $ 15,203 $ — $ 15,203 $ — Interest rate lock and purchase loan commitments 367 — — 367 Interest rate swaps 26,829 — 26,829 — Total liabilities $ 42,399 $ — $ 42,032 $ 367
Fair Value Inputs, Assets, Quantitative Information	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 September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 5,546 Income approach Implied spread to benchmark interest rate curve 3.73% 4.84% 4.13% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for investment, fair value option $ 17,988 Income approach Implied spread to benchmark interest rate curve 3.62% 4.97% 4.49% 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 September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 91 Income approach Implied spread to benchmark interest rate curve 4.36% 4.36% 4.36% Market price movement from comparable bond (0.58)% (0.14)% (0.36)% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Loans held for sale, fair value option $ 41,810 Income approach Implied spread to benchmark interest rate curve 3.46% 6.14% 4.23% Market price movement from comparable bond (0.49)% (0.11)% (0.27)% (dollars in thousands) At September 30, 2017 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 21,002 Income approach Fall-out factor 0.40% 61.46% 14.18% Value of servicing 0.63% 2.14% 1.05% (dollars in thousands) At December 31, 2016 Fair Value Valuation Technique Significant Unobservable Input Low High Weighted Average Interest rate lock and purchase loan commitments, net $ 19,219 Income approach Fall-out factor 0.50% 60.34% 11.95% Value of servicing 0.65% 2.27% 1.08%
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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance, net $ 22,283 $ 39,991 $ 19,219 $ 17,711 Total realized/unrealized gains 36,779 56,752 106,365 160,047 Settlements (38,060 ) (51,383 ) (104,582 ) (132,398 ) Ending balance, net $ 21,002 $ 45,360 $ 21,002 $ 45,360 The following table presents fair value changes and activity for Level 3 loans held for sale and loans held for investment. Three Months Ended September 30, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 29,259 $ 93 $ (303 ) $ (28,913 ) $ (45 ) $ 91 Loans held for investment 5,134 127 303 — (18 ) 5,546 Three Months Ended September 30, 2016 Loans held for sale $ 43,742 $ 4,579 $ (46 ) $ (3,566 ) $ (410 ) $ 44,299 Loans held for investment 22,362 342 46 (2,005 ) (198 ) 20,547 Nine Months Ended September 30, 2017 Beginning balance Additions Transfers Payoffs/Sales Change in mark to market Ending balance (in thousands) Loans held for sale $ 41,810 $ 3,088 $ 12,797 $ (58,396 ) $ 792 $ 91 Loans held for investment 17,988 127 (12,272 ) (480 ) 183 5,546 Nine Months Ended September 30, 2016 Loans held for sale $ 49,322 $ 12,698 $ (4,654 ) $ (11,926 ) $ (1,141 ) $ 44,299 Loans held for investment 21,544 601 4,654 (5,782 ) (470 ) 20,547
Fair Value Measurements on Nonrecurring Basis	The following tables present assets that had changes in their recorded fair value during the three and nine months ended September 30, 2017 and 2016 and what we still held at the end of the respective reporting period. At or for the Three Months Ended September 30, 2017 (in thousands) Fair Value of Assets Held at September 30, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,286 $ — $ — $ 2,286 $ (467 ) Other real estate owned (2) 5,521 — — 5,521 (33 ) Total $ 7,807 $ — $ — $ 7,807 $ (500 ) At or for the Three Months Ended September 30, 2016 (in thousands) Fair Value of Assets Held at September 30, 2016 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 10,570 $ — $ — $ 10,570 $ (750 ) Other real estate owned (2) 5,755 — — 5,755 (1,160 ) Total $ 16,325 $ — $ — $ 16,325 $ (1,910 ) At or for the Nine Months Ended September 30, 2017 (in thousands) Fair Value of Assets Held at September 30, 2017 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 2,286 $ — $ — $ 2,286 $ (348 ) Other real estate owned (2) 5,521 — — 5,521 (33 ) Total $ 7,807 $ — $ — $ 7,807 $ (381 ) At or for the Nine Months Ended September 30, 2016 (in thousands) Fair Value of Assets Held at September 30, 2016 Level 1 Level 2 Level 3 Total Gains (Losses) Loans held for investment (1) $ 10,570 $ — $ — $ 10,570 $ (827 ) Other real estate owned (2) 5,755 — — 5,755 (1,551 ) Total $ 16,325 $ — $ — $ 16,325 $ (2,378 ) (1) Represents the carrying value of loans for which adjustments are based on the fair value of the collateral. (2)
Fair Value, by Balance Sheet Grouping	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 September 30, 2017 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 55,050 $ 55,050 $ 55,050 $ — $ — Investment securities held to maturity 56,608 56,840 — 56,840 — Loans held for investment 4,307,679 4,334,941 — — 4,334,941 Loans held for sale – transferred from held for investment 69,450 69,450 — — 69,450 Loans held for sale – multifamily and other 51,634 51,634 — 51,634 — Mortgage servicing rights – multifamily 23,967 26,117 — — 26,117 Federal Home Loan Bank stock 52,486 52,486 — 52,486 — Liabilities: Deposits $ 4,670,486 $ 4,649,934 $ — $ 4,649,934 $ — Federal Home Loan Bank advances 1,135,245 1,137,651 — 1,137,651 — Long-term debt 125,280 122,696 — 122,696 — At December 31, 2016 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Assets: Cash and cash equivalents $ 53,932 $ 53,932 $ 53,932 $ — $ — Investment securities held to maturity 49,861 49,488 — 49,488 — Loans held for investment 3,801,039 3,840,990 — — 3,840,990 Loans held for sale – transferred from held for investment 17,512 17,512 — — 17,512 Loans held for sale – multifamily 40,712 40,712 — 40,712 — Mortgage servicing rights – multifamily 19,747 21,610 — — 21,610 Federal Home Loan Bank stock 40,347 40,347 — 40,347 — Liabilities: Deposits $ 4,429,701 $ 4,410,213 $ — $ 4,410,213 $ — Federal Home Loan Bank advances 868,379 870,782 — 870,782 — Long-term debt 125,147 122,357 — 122,357 —

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
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 September 30, Nine Months Ended September 30, (in thousands, except share and per share data) 2017 2016 2017 2016 Net income $ 13,839 $ 27,701 $ 34,031 $ 55,857 Weighted average shares: Basic weighted-average number of common shares outstanding 26,883,392 24,811,169 26,857,006 24,398,683 Dilutive effect of outstanding common stock equivalents (1) 205,648 185,578 220,026 196,665 Diluted weighted-average number of common stock outstanding 27,089,040 24,996,747 27,077,032 24,595,348 Earnings per share: Basic earnings per share $ 0.51 $ 1.12 $ 1.27 $ 2.29 Diluted earnings per share $ 0.51 $ 1.11 $ 1.26 $ 2.27 (1) Excluded from the computation of diluted earnings per share (due to their antidilutive effect) for the three and nine months ended September 30, 2017 and 2016 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 912 at September 30, 2017 and zero at September 30, 2016

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Condensed Income Statement	Financial highlights by operating segment were as follows. Three Months Ended September 30, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 5,526 $ 45,314 $ 50,840 Provision for credit losses — 250 250 Noninterest income 71,922 11,962 83,884 Noninterest expense 77,537 37,160 114,697 Income before income taxes (89 ) 19,866 19,777 Income tax expense 34 5,904 5,938 Net income (loss) $ (123 ) $ 13,962 $ 13,839 Total assets $ 1,032,510 $ 5,763,836 $ 6,796,346 Three Months Ended September 30, 2016 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 7,463 $ 39,339 $ 46,802 Provision for credit losses — 1,250 1,250 Noninterest income 101,974 9,771 111,745 Noninterest expense 82,229 32,170 114,399 Income before income taxes 27,208 15,690 42,898 Income tax expense 9,640 5,557 15,197 Net income $ 17,568 $ 10,133 $ 27,701 Total assets $ 1,103,899 $ 5,122,702 $ 6,226,601 Nine Months Ended September 30, 2017 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 14,693 $ 128,666 $ 143,359 Provision for credit losses — 750 750 Noninterest income 209,690 29,663 239,353 Noninterest expense 222,554 110,261 332,815 Income before income taxes 1,829 47,318 49,147 Income tax expense 498 14,618 15,116 Net income $ 1,331 $ 32,700 $ 34,031 Total assets $ 1,032,510 $ 5,763,836 $ 6,796,346 Nine Months Ended September 30, 2016 (in thousands) Mortgage Banking Commercial and Consumer Banking Total Condensed income statement: Net interest income (1) $ 18,597 $ 113,378 $ 131,975 Provision for credit losses — 3,750 3,750 Noninterest income 263,334 22,595 285,929 Noninterest expense 223,880 102,903 326,783 Income before income taxes 58,051 29,320 87,371 Income tax expense 20,948 10,566 31,514 Net income $ 37,103 $ 18,754 $ 55,857 Total assets $ 1,103,899 $ 5,122,702 $ 6,226,601 (1)

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Income [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 September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Beginning balance $ (5,413 ) $ 9,748 $ (10,412 ) $ (2,449 ) Other comprehensive income (loss) before reclassifications 1,236 (1,786 ) 6,597 10,474 Amounts reclassified from accumulated other comprehensive loss (215 ) (31 ) (577 ) (94 ) Net current-period other comprehensive income (loss) 1,021 (1,817 ) 6,020 10,380 Ending balance $ (4,392 ) $ 7,931 $ (4,392 ) $ 7,931
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 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 Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2017 2016 2017 2016 Gain on sale of investment securities available for sale $ 331 $ 48 $ 888 $ 145 Income tax expense 116 17 311 51 Total, net of tax $ 215 $ 31 $ 577 $ 94

Restructuring (Tables)

Restructuring (Tables)	9 Months Ended
	Sep. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring reserve rollforward	The following table summarizes the restructuring charges, the restructuring costs paid or settled during the third quarter, and the Company's net remaining liability balance. (in thousands) Facility related costs Personnel related costs Total Balance at June 30, 2017 $ — $ 71 $ 71 Restructuring charges 3,332 545 3,877 Costs paid or otherwise settled (1,279 ) (180 ) (1,459 ) Balance at September 30, 2017 $ 2,053 $ 436 $ 2,489

Business Combinations - Narrati

Business Combinations - Narrative (Details) $ / shares in Units, $ in Thousands	Sep. 15, 2017USD ($)branch	Nov. 10, 2016USD ($)branch	Aug. 12, 2016USD ($)branch	Feb. 01, 2016USD ($)$ / sharesshares	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Goodwill from acquisition					$ 22,564	$ 22,175
Opus Bank [Member]
Business Acquisition [Line Items]
Number of branches opened | branch	1
Goodwill from acquisition	$ 389
Boston Private Bank and Trust [Member]
Business Acquisition [Line Items]
Number of branches opened | branch		2
Goodwill from acquisition		$ 2,300
Bank of Oswego [Member]
Business Acquisition [Line Items]
Number of branches opened | branch			2
Goodwill from acquisition			$ 19
Orange County Business Bank [Member]
Business Acquisition [Line Items]
Goodwill from acquisition				$ 8,400
Purchase price of acquisition				$ 55,900
Equity interests issued per share				0.5206
Share price (in dollars per share) | $ / shares				$ 1.1641
Equity interests issued for acquisition (in shares) | shares				2,459,461

Investment Securities - Unreali

Investment Securities - Unrealized Gain/Loss on Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
AVAILABLE FOR SALE
Amortized cost	$ 869,587	$ 1,009,986
Gross unrealized gains	4,119	1,548
Gross unrealized losses	(10,855)	(17,544)
Fair value	862,851	993,990
HELD TO MATURITY
Amortized cost	56,608	49,861
Gross unrealized gains	527	240
Gross unrealized losses	(295)	(613)
Fair value	56,840	49,488
Residential Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Amortized cost	155,490	181,158
Gross unrealized gains	8	31
Gross unrealized losses	(3,137)	(4,115)
Fair value	152,361	177,074
HELD TO MATURITY
Amortized cost	12,579	13,844
Gross unrealized gains	75	71
Gross unrealized losses	(55)	(90)
Fair value	12,599	13,825
Commercial Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Amortized cost	20,410	25,896
Gross unrealized gains	23	13
Gross unrealized losses	(218)	(373)
Fair value	20,215	25,536
HELD TO MATURITY
Amortized cost	21,108	16,303
Gross unrealized gains	125	70
Gross unrealized losses	(77)	(64)
Fair value	21,156	16,309
Collateralized Mortgage Obligations [Member]
HELD TO MATURITY
Amortized cost	3,492
Gross unrealized gains	0
Gross unrealized losses	(18)
Fair value	3,474
Municipal Bonds [Member]
AVAILABLE FOR SALE
Amortized cost	368,921	473,153
Gross unrealized gains	3,496	1,333
Gross unrealized losses	(3,139)	(6,813)
Fair value	369,278	467,673
HELD TO MATURITY
Amortized cost	19,330	19,612
Gross unrealized gains	327	99
Gross unrealized losses	(145)	(459)
Fair value	19,512	19,252
Residential Collateralized Mortgage Obligations [Member]
AVAILABLE FOR SALE
Amortized cost	187,458	194,982
Gross unrealized gains	331	32
Gross unrealized losses	(2,852)	(3,813)
Fair value	184,937	191,201
Commercial Collateralized Mortgage Obligations [Member]
AVAILABLE FOR SALE
Amortized cost	87,382	71,870
Gross unrealized gains	187	29
Gross unrealized losses	(752)	(1,135)
Fair value	86,817	70,764
Corporate Debt Securities [Member]
AVAILABLE FOR SALE
Amortized cost	29,173	52,045
Gross unrealized gains	74	110
Gross unrealized losses	(517)	(1,033)
Fair value	28,730	51,122
HELD TO MATURITY
Amortized cost	99	102
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	99	102
US Treasury Securities [Member]
AVAILABLE FOR SALE
Amortized cost	10,896	10,882
Gross unrealized gains	0	0
Gross unrealized losses	(146)	(262)
Fair value	10,750	$ 10,620
Agency Securities [Member]
AVAILABLE FOR SALE
Amortized cost	9,857
Gross unrealized gains	0
Gross unrealized losses	(94)
Fair value	$ 9,763

Investment Securities - Continu

Investment Securities - Continuous Unrealized Loss on Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	$ (6,785)	$ (15,819)
Less than 12 months, Fair value	466,610	723,052
12 months or more, Gross unrealized losses	(4,070)	(1,725)
12 months or more, Fair value	162,925	38,355
Total, Gross unrealized losses	(10,855)	(17,544)
Total, Fair value	629,535	761,407
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(220)	(613)
Less than 12 months, Fair value	23,011	30,354
12 months or more, Gross unrealized losses	(75)	0
12 months or more, Fair value	5,386	0
Total, Gross unrealized losses	(295)	(613)
Total, Fair value	28,397	30,354
Residential Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(2,330)	(3,842)
Less than 12 months, Fair value	119,404	144,240
12 months or more, Gross unrealized losses	(807)	(273)
12 months or more, Fair value	31,548	9,907
Total, Gross unrealized losses	(3,137)	(4,115)
Total, Fair value	150,952	154,147
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(55)	(90)
Less than 12 months, Fair value	4,778	5,481
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(55)	(90)
Total, Fair value	4,778	5,481
Commercial Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(60)	(373)
Less than 12 months, Fair value	12,653	23,798
12 months or more, Gross unrealized losses	(158)	0
12 months or more, Fair value	2,899	0
Total, Gross unrealized losses	(218)	(373)
Total, Fair value	15,552	23,798
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(77)	(64)
Less than 12 months, Fair value	9,512	13,156
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(77)	(64)
Total, Fair value	9,512	13,156
Collateralized Mortgage Obligations [Member]
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(18)
Less than 12 months, Fair value	3,474
12 months or more, Gross unrealized losses	0
12 months or more, Fair value	0
Total, Gross unrealized losses	(18)
Total, Fair value	3,474
Municipal Bonds [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(2,324)	(6,813)
Less than 12 months, Fair value	163,838	283,531
12 months or more, Gross unrealized losses	(815)	0
12 months or more, Fair value	52,010	0
Total, Gross unrealized losses	(3,139)	(6,813)
Total, Fair value	215,848	283,531
HELD TO MATURITY
Less than 12 months, Gross unrealized losses	(70)	(459)
Less than 12 months, Fair value	5,247	11,717
12 months or more, Gross unrealized losses	(75)	0
12 months or more, Fair value	5,386	0
Total, Gross unrealized losses	(145)	(459)
Total, Fair value	10,633	11,717
Residential Collateralized Mortgage Obligations [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(1,195)	(3,052)
Less than 12 months, Fair value	92,065	175,490
12 months or more, Gross unrealized losses	(1,657)	(761)
12 months or more, Fair value	58,595	11,422
Total, Gross unrealized losses	(2,852)	(3,813)
Total, Fair value	150,660	186,912
Commercial Collateralized Mortgage Obligations [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(456)	(1,005)
Less than 12 months, Fair value	51,910	60,926
12 months or more, Gross unrealized losses	(296)	(130)
12 months or more, Fair value	9,423	5,349
Total, Gross unrealized losses	(752)	(1,135)
Total, Fair value	61,333	66,275
Corporate Debt Securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(180)	(472)
Less than 12 months, Fair value	6,227	24,447
12 months or more, Gross unrealized losses	(337)	(561)
12 months or more, Fair value	8,450	11,677
Total, Gross unrealized losses	(517)	(1,033)
Total, Fair value	14,677	36,124
US Treasury Securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(146)	(262)
Less than 12 months, Fair value	10,750	10,620
12 months or more, Gross unrealized losses	0	0
12 months or more, Fair value	0	0
Total, Gross unrealized losses	(146)	(262)
Total, Fair value	10,750	$ 10,620
Agency Securities [Member]
AVAILABLE FOR SALE
Less than 12 months, Gross unrealized losses	(94)
Less than 12 months, Fair value	9,763
12 months or more, Gross unrealized losses	0
12 months or more, Fair value	0
Total, Gross unrealized losses	(94)
Total, Fair value	$ 9,763

Investment Securities - Weighte

Investment Securities - Weighted Average Yield (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
AVAILABLE FOR SALE
Due within one year, Fair value	$ 2,622	$ 4,479
Due in one through five years, Fair value	62,611	63,266
Due in five through ten years, Fair value	110,859	110,776
Due in ten years or more, Fair value	686,759	815,469
Total, Fair value	$ 862,851	$ 993,990
Weighted Average Yield, due within one year (as a percent)	2.32%	2.70%
Weighted Average Yield, due in one through five years (as a percent)	2.63%	2.43%
Weighted Average Yield, due in five through ten years (as a percent)	2.62%	2.69%
Weighted Average Yield, due in ten years or more (as a percent)	2.81%	2.57%
Weighted average yield contractual maturities, Total (as a percent)	2.77%	2.57%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	5,663	4,581
Due in five through ten years, Fair value	22,059	18,178
Due in ten years or more, Fair value	29,118	26,729
Total, Fair value	$ 56,840	$ 49,488
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%	2.06%
Weighted Average Yield, due in five through ten years (as a percent)	2.71%	2.72%
Weighted Average Yield, due in ten years or more (as a percent)	3.02%	3.22%
Weighted average yield contractual maturities, Total (as a percent)	2.82%	2.93%
Residential Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 1
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	10,319	2,122
Due in ten years or more, Fair value	142,042	174,951
Total, Fair value	$ 152,361	$ 177,074
Weighted Average Yield, due within one year (as a percent)	0.00%	0.29%
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)	1.65%	1.59%
Weighted Average Yield, due in ten years or more (as a percent)	1.98%	2.03%
Weighted average yield contractual maturities, Total (as a percent)	1.95%	2.02%
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 in ten years or more, Fair value	12,599	13,825
Total, Fair value	$ 12,599	$ 13,825
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 in ten years or more (as a percent)	2.95%	3.11%
Weighted average yield contractual maturities, Total (as a percent)	2.95%	3.11%
Commercial Mortgage-backed Securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	15,606	20,951
Due in five through ten years, Fair value	4,609	4,585
Due in ten years or more, Fair value	0	0
Total, Fair value	$ 20,215	$ 25,536
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)	2.09%	2.13%
Weighted Average Yield, due in five through ten years (as a percent)	2.04%	2.06%
Weighted Average Yield, due in ten years or more (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	2.08%	2.11%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	4,499	4,581
Due in five through ten years, Fair value	16,657	11,728
Due in ten years or more, Fair value	0	0
Total, Fair value	$ 21,156	$ 16,309
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)	2.03%	2.06%
Weighted Average Yield, due in five through ten years (as a percent)	2.69%	2.71%
Weighted Average Yield, due in ten years or more (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	2.55%	2.53%
Collateralized Mortgage Obligations [Member]
HELD TO MATURITY
Due within one year, Fair value	$ 0
Due in one through five years, Fair value	0
Due in five through ten years, Fair value	0
Due in ten years or more, Fair value	3,474
Total, Fair value	$ 3,474
Weighted Average Yield, due within one year (as a percent)	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	0.00%
Weighted Average Yield, due in ten years or more (as a percent)	1.75%
Weighted average yield contractual maturities, Total (as a percent)	1.75%
Municipal Bonds [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 1,622	$ 3,479
Due in one through five years, Fair value	26,236	20,939
Due in five through ten years, Fair value	42,055	52,043
Due in ten years or more, Fair value	299,365	391,212
Total, Fair value	$ 369,278	$ 467,673
Weighted Average Yield, due within one year (as a percent)	3.00%	3.30%
Weighted Average Yield, due in one through five years (as a percent)	3.22%	2.94%
Weighted Average Yield, due in five through ten years (as a percent)	3.15%	2.55%
Weighted Average Yield, due in ten years or more (as a percent)	3.80%	3.08%
Weighted average yield contractual maturities, Total (as a percent)	3.68%	3.02%
HELD TO MATURITY
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	1,164	0
Due in five through ten years, Fair value	5,402	6,450
Due in ten years or more, Fair value	12,946	12,802
Total, Fair value	$ 19,512	$ 19,252
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)	2.93%	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	2.79%	2.73%
Weighted Average Yield, due in ten years or more (as a percent)	3.40%	3.31%
Weighted average yield contractual maturities, Total (as a percent)	3.21%	3.11%
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	1,063	1,639
Due in ten years or more, Fair value	183,874	189,562
Total, Fair value	$ 184,937	$ 191,201
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)	1.80%	1.32%
Weighted Average Yield, due in ten years or more (as a percent)	2.05%	2.06%
Weighted average yield contractual maturities, Total (as a percent)	2.05%	2.06%
Commercial Collateralized Mortgage Obligations [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	13,091	10,860
Due in five through ten years, Fair value	22,280	19,273
Due in ten years or more, Fair value	51,446	40,631
Total, Fair value	$ 86,817	$ 70,764
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)	2.09%	1.84%
Weighted Average Yield, due in five through ten years (as a percent)	2.33%	2.74%
Weighted Average Yield, due in ten years or more (as a percent)	2.05%	1.91%
Weighted average yield contractual maturities, Total (as a percent)	2.12%	2.12%
Agency Securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0
Due in one through five years, Fair value	0
Due in five through ten years, Fair value	9,763
Due in ten years or more, Fair value	0
Total, Fair value	$ 9,763
Weighted Average Yield, due within one year (as a percent)	0.00%
Weighted Average Yield, due in one through five years (as a percent)	0.00%
Weighted Average Yield, due in five through ten years (as a percent)	2.29%
Weighted Average Yield, due in ten years or more (as a percent)	0.00%
Weighted average yield contractual maturities, Total (as a percent)	2.29%
Corporate Debt Securities [Member]
AVAILABLE FOR SALE
Due within one year, Fair value	$ 0	$ 0
Due in one through five years, Fair value	7,678	10,516
Due in five through ten years, Fair value	11,020	21,493
Due in ten years or more, Fair value	10,032	19,113
Total, Fair value	$ 28,730	$ 51,122
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)	2.72%	2.67%
Weighted Average Yield, due in five through ten years (as a percent)	3.46%	3.74%
Weighted Average Yield, due in ten years or more (as a percent)	3.54%	3.54%
Weighted average yield contractual maturities, Total (as a percent)	3.30%	3.45%
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 in ten years or more, Fair value	99	102
Total, Fair value	$ 99	$ 102
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 in ten years or more (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	$ 1,000	$ 999
Due in one through five years, Fair value	0	0
Due in five through ten years, Fair value	9,750	9,621
Due in ten years or more, Fair value	0	0
Total, Fair value	$ 10,750	$ 10,620
Weighted Average Yield, due within one year (as a percent)	1.22%	0.64%
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)	1.78%	1.76%
Weighted Average Yield, due in ten years or more (as a percent)	0.00%	0.00%
Weighted average yield contractual maturities, Total (as a percent)	1.73%	1.66%

Investment Securities - Realize

Investment Securities - Realized Gain/Loss on Investment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 27,827	$ 9,641	$ 342,460	$ 21,108
Gross gains	331	48	907	145
Gross losses	$ 0	$ 0	$ (19)	$ 0

Investment Securities - Pledged

Investment Securities - Pledged to Secure Borrowings And Public Deposits (Details) $ in Thousands	Sep. 30, 2017USD ($)
Investments, Debt and Equity Securities [Abstract]
Federal Home Loan Bank to secure borrowings	$ 196,363
Washington and California State to secure public deposits	37,456
Securities pledged to secure derivatives in a liability position	7,563
Other securities pledged	6,634
Total securities pledged as collateral	$ 248,016

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Security pledged under repurchase agreement	$ 0		$ 0		$ 0
Tax exempt interest income on available-for-sale securities	$ 2,000,000	$ 1,800,000	$ 6,900,000	$ 4,300,000

Loans and Credit Quality - Loan

Loans and Credit Quality - Loans Held for Investment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Loans held for investment
Total loans before fees and costs	$ 4,338,822	$ 3,849,451
Net deferred loan fees and costs	11,458	3,577
Total loans	4,350,280	3,853,028
Allowance for loan losses	(37,055)	(34,001)	$ (33,975)
Loans held for investment	4,313,225	3,819,027
Fair value of loans held for investment	5,546	17,988
Consumer Loans [Member]
Loans held for investment
Total loans before fees and costs	1,706,239	1,443,696
Consumer Loans [Member] | Single Family [Member]
Loans held for investment
Total loans before fees and costs	1,269,484	1,083,822
Consumer Loans [Member] | Home Equity and Other [Member]
Loans held for investment
Total loans before fees and costs	436,755	359,874
Commercial Loans [Member]
Loans held for investment
Total loans before fees and costs	2,632,583	2,405,755
Commercial Loans [Member] | Commercial Real Estate [Member]
Loans held for investment
Total loans before fees and costs	986,421	871,563
Commercial Loans [Member] | Multifamily [Member]
Loans held for investment
Total loans before fees and costs	747,171	674,219
Commercial Loans [Member] | Construction/Land Development [Member]
Loans held for investment
Total loans before fees and costs	653,132	636,320
Commercial Loans [Member] | Commercial Business [Member]
Loans held for investment
Total loans before fees and costs	245,859	223,653
Fair Value, Measurements, Recurring [Member]
Loans held for investment
Fair value of loans held for investment	5,546	17,988
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Loans held for investment
Fair value of loans held for investment	$ 5,546	$ 17,988

Loans and Credit Quality - Allo

Loans and Credit Quality - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance	$ 37,470	$ 34,001	$ 35,264	$ 30,659
Provision for credit losses	250	1,250	750	3,750
Recoveries, net of charge-offs	475	(18)	2,181	824
Ending Balance	38,195	35,233	38,195	35,233
Allowance for loan losses					$ 37,055	$ 34,001	$ 33,975
Allowance for unfunded commitments					1,140	1,300	1,258
Allowance for credit losses	$ 37,470	$ 35,233	$ 35,264	$ 30,659	$ 38,195	$ 35,264	$ 35,233

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for credit losses by loan portfolio
Beginning Balance	$ 37,470	$ 34,001	$ 35,264	$ 30,659
Charge-offs	(273)	(398)	(802)	(796)
Recoveries	748	380	2,983	1,620
Provision for (Reversal of) credit losses	250	1,250	750	3,750
Ending Balance	38,195	35,233	38,195	35,233
Consumer Loans [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	15,144	13,694	14,349	13,562
Charge-offs	(72)	(398)	(585)	(728)
Recoveries	430	193	1,799	617
Provision for (Reversal of) credit losses	572	1,507	511	1,545
Ending Balance	16,074	14,996	16,074	14,996
Consumer Loans [Member] | Single Family [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	8,288	8,294	8,196	8,942
Charge-offs	0	(42)	(2)	(74)
Recoveries	2	1	1,018	87
Provision for (Reversal of) credit losses	791	995	(131)	293
Ending Balance	9,081	9,248	9,081	9,248
Consumer Loans [Member] | Home Equity and Other [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	6,856	5,400	6,153	4,620
Charge-offs	(72)	(356)	(583)	(654)
Recoveries	428	192	781	530
Provision for (Reversal of) credit losses	(219)	512	642	1,252
Ending Balance	6,993	5,748	6,993	5,748
Commercial Loans [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	22,326	20,307	20,915	17,097
Charge-offs	(201)	0	(217)	(68)
Recoveries	318	187	1,184	1,003
Provision for (Reversal of) credit losses	(322)	(257)	239	2,205
Ending Balance	22,121	20,237	22,121	20,237
Commercial Loans [Member] | Commercial Real Estate [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	7,455	6,045	6,680	4,847
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Reversal of) credit losses	46	80	821	1,278
Ending Balance	7,501	6,125	7,501	6,125
Commercial Loans [Member] | Multifamily [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	4,059	2,048	3,086	1,194
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Reversal of) credit losses	(3)	49	970	903
Ending Balance	4,056	2,097	4,056	2,097
Commercial Loans [Member] | Construction/Land Development [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	8,226	9,369	8,553	9,271
Charge-offs	0	0	0	(42)
Recoveries	172	176	606	959
Provision for (Reversal of) credit losses	(451)	(524)	(1,212)	(1,167)
Ending Balance	7,947	9,021	7,947	9,021
Commercial Loans [Member] | Commercial Business [Member]
Allowance for credit losses by loan portfolio
Beginning Balance	2,586	2,845	2,596	1,785
Charge-offs	(201)	0	(217)	(26)
Recoveries	146	11	578	44
Provision for (Reversal of) credit losses	86	138	(340)	1,191
Ending Balance	$ 2,617	$ 2,994	$ 2,617	$ 2,994

Loans and Credit Quality - Reco

Loans and Credit Quality - Recorded Investment in Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	$ 37,392		$ 34,885
Allowance: individually evaluated for impairment	803		379
Allowance for credit losses	38,195	$ 37,470	35,264	$ 35,233	$ 34,001	$ 30,659
Loans: collectively evaluated for impairment	4,245,877		3,740,955
Loans: individually evaluated for impairment	87,399		90,508
Total	4,333,276		3,831,463
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	15,673		13,975
Allowance: individually evaluated for impairment	401		374
Allowance for credit losses	16,074	15,144	14,349	14,996	13,694	13,562
Loans: collectively evaluated for impairment	1,619,951		1,343,569
Loans: individually evaluated for impairment	80,742		82,139
Total	1,700,693		1,425,708
Consumer Loans [Member] | Single Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	8,727		7,871
Allowance: individually evaluated for impairment	354		325
Allowance for credit losses	9,081	8,288	8,196	9,248	8,294	8,942
Loans: collectively evaluated for impairment	1,184,497		985,219
Loans: individually evaluated for impairment	79,441		80,676
Total	1,263,938		1,065,895
Consumer Loans [Member] | Home Equity and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	6,946		6,104
Allowance: individually evaluated for impairment	47		49
Allowance for credit losses	6,993	6,856	6,153	5,748	5,400	4,620
Loans: collectively evaluated for impairment	435,454		358,350
Loans: individually evaluated for impairment	1,301		1,463
Total	436,755		359,813
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	21,719		20,910
Allowance: individually evaluated for impairment	402		5
Allowance for credit losses	22,121	22,326	20,915	20,237	20,307	17,097
Loans: collectively evaluated for impairment	2,625,926		2,397,386
Loans: individually evaluated for impairment	6,657		8,369
Total	2,632,583		2,405,755
Commercial Loans [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	7,501		6,680
Allowance: individually evaluated for impairment	0		0
Allowance for credit losses	7,501	7,455	6,680	6,125	6,045	4,847
Loans: collectively evaluated for impairment	983,859		869,225
Loans: individually evaluated for impairment	2,562		2,338
Total	986,421		871,563
Commercial Loans [Member] | Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	4,056		3,086
Allowance: individually evaluated for impairment	0		0
Allowance for credit losses	4,056	4,059	3,086	2,097	2,048	1,194
Loans: collectively evaluated for impairment	746,349		673,374
Loans: individually evaluated for impairment	822		845
Total	747,171		674,219
Commercial Loans [Member] | Construction/Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	7,947		8,553
Allowance: individually evaluated for impairment	0		0
Allowance for credit losses	7,947	8,226	8,553	9,021	9,369	9,271
Loans: collectively evaluated for impairment	652,125		634,427
Loans: individually evaluated for impairment	1,007		1,893
Total	653,132		636,320
Commercial Loans [Member] | Commercial Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance: collectively evaluated for impairment	2,215		2,591
Allowance: individually evaluated for impairment	402		5
Allowance for credit losses	2,617	$ 2,586	2,596	$ 2,994	$ 2,845	$ 1,785
Loans: collectively evaluated for impairment	243,593		220,360
Loans: individually evaluated for impairment	2,266		3,293
Total	245,859		223,653
Estimate of Fair Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans: collectively evaluated for impairment	5,416
Loans: individually evaluated for impairment	130
Total	5,546		17,988
Reported Value Measurement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans: collectively evaluated for impairment	4,251,293
Loans: individually evaluated for impairment	87,529
Total	$ 4,338,822		$ 3,849,451

Loans and Credit Quality - Impa

Loans and Credit Quality - Impaired Loans by Loan Class (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	$ 81,014	$ 86,723
Recorded investment with related allowance recorded	6,515	3,785
Total recorded investment	87,529	90,508
Unpaid principal balance with no related allowance recorded	84,762	92,431
Unpaid principal balance with related allowance recorded	6,655	3,875
Total unpaid principal balance	91,417	96,306
Related allowance	803	379
Performing TDRs	73,700	73,100
Consumer Loans [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	76,183	78,702
Recorded investment with related allowance recorded	4,689	3,437
Total recorded investment	80,872	82,139
Unpaid principal balance with no related allowance recorded	77,825	81,550
Unpaid principal balance with related allowance recorded	4,781	3,528
Total unpaid principal balance	82,606	85,078
Related allowance	401	374
Consumer Loans [Member] | Single Family [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	75,396	77,756
Recorded investment with related allowance recorded	4,175	2,920
Total recorded investment	79,571	80,676
Unpaid principal balance with no related allowance recorded	77,012	80,573
Unpaid principal balance with related allowance recorded	4,267	3,011
Total unpaid principal balance	81,279	83,584
Related allowance	354	325
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	787	946
Recorded investment with related allowance recorded	514	517
Total recorded investment	1,301	1,463
Unpaid principal balance with no related allowance recorded	813	977
Unpaid principal balance with related allowance recorded	514	517
Total unpaid principal balance	1,327	1,494
Related allowance	47	49
Commercial Loans [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	4,831	8,021
Recorded investment with related allowance recorded		348
Total recorded investment	6,657	8,369
Unpaid principal balance with no related allowance recorded	6,937	10,881
Unpaid principal balance with related allowance recorded		347
Total unpaid principal balance	8,811	11,228
Related allowance	402	5
Commercial Loans [Member] | Commercial Real Estate [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	2,562	2,338
Total recorded investment	2,562	2,338
Unpaid principal balance with no related allowance recorded	3,090	2,846
Total unpaid principal balance	3,090	2,846
Related allowance	0	0
Commercial Loans [Member] | Multifamily [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	822	845
Total recorded investment	822	845
Unpaid principal balance with no related allowance recorded	842	851
Total unpaid principal balance	842	851
Related allowance	0	0
Commercial Loans [Member] | Construction/Land Development [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	1,007	1,893
Total recorded investment	1,007	1,893
Unpaid principal balance with no related allowance recorded	1,549	2,819
Total unpaid principal balance	1,549	2,819
Related allowance	0	0
Commercial Loans [Member] | Commercial Business [Member]
Impaired loans by loan portfolio segment and loan class [Abstract]
Recorded investment with no related allowance recorded	440	2,945
Recorded investment with related allowance recorded	1,826	348
Total recorded investment	2,266	3,293
Unpaid principal balance with no related allowance recorded	1,456	4,365
Unpaid principal balance with related allowance recorded	1,874	347
Total unpaid principal balance	3,330	4,712
Related allowance	$ 402	$ 5

Loans and Credit Quality - Aver

Loans and Credit Quality - Average Recorded Investment in Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Impaired [Line Items]
Average recorded investment	$ 90,116	$ 96,962	$ 91,499	$ 96,991
Interest Income Recognized	847	792	2,668	2,397
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	83,271	86,509	83,364	84,750
Interest Income Recognized	757	744	2,340	2,221
Consumer Loans [Member] | Single Family [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	81,770	85,138	81,889	83,271
Interest Income Recognized	738	727	2,278	2,171
Consumer Loans [Member] | Home Equity and Other [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,501	1,371	1,475	1,479
Interest Income Recognized	19	17	62	50
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	6,845	10,453	8,135	12,241
Interest Income Recognized	90	48	328	176
Commercial Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	2,960	3,431	3,446	3,439
Interest Income Recognized	33	4	129	12
Commercial Loans [Member] | Multifamily [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	825	621	833	1,877
Interest Income Recognized	6	6	18	41
Commercial Loans [Member] | Construction/Land Development [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	1,015	2,333	1,277	3,023
Interest Income Recognized	21	23	68	67
Commercial Loans [Member] | Commercial Business [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment	2,045	4,068	2,579	3,902
Interest Income Recognized	$ 30	$ 15	$ 113	$ 56

Loans and Credit Quality - Lo47

Loans and Credit Quality - Loan Grades by Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	$ 4,338,822	$ 3,849,451
Fair value of loans held for investment	5,546	17,988
Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	4,200,993	3,666,442
Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	91,110	129,445
Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	26,942	29,827
Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	19,777	23,737
Consumer Loans [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,706,239	1,443,696
Consumer Loans [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,675,915	1,408,654
Consumer Loans [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	3,101	4,945
Consumer Loans [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	14,170	15,686
Consumer Loans [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	13,053	14,411
Consumer Loans [Member] | Single Family [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,269,484	1,083,822
Consumer Loans [Member] | Single Family [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,241,538	1,051,463
Consumer Loans [Member] | Single Family [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,853	4,348
Consumer Loans [Member] | Single Family [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	13,510	15,172
Consumer Loans [Member] | Single Family [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	11,583	12,839
Consumer Loans [Member] | Home Equity and Other [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	436,755	359,874
Consumer Loans [Member] | Home Equity and Other [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	434,377	357,191
Consumer Loans [Member] | Home Equity and Other [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	248	597
Consumer Loans [Member] | Home Equity and Other [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	660	514
Consumer Loans [Member] | Home Equity and Other [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,470	1,572
Commercial Loans [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,632,583	2,405,755
Commercial Loans [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	2,525,078	2,257,788
Commercial Loans [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	88,009	124,500
Commercial Loans [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	12,772	14,141
Commercial Loans [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	6,724	9,326
Commercial Loans [Member] | Commercial Real Estate [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	986,421	871,563
Commercial Loans [Member] | Commercial Real Estate [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	945,951	809,996
Commercial Loans [Member] | Commercial Real Estate [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	29,487	52,519
Commercial Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	7,868	7,165
Commercial Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	3,115	1,883
Commercial Loans [Member] | Multifamily [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	747,171	674,219
Commercial Loans [Member] | Multifamily [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	734,472	660,234
Commercial Loans [Member] | Multifamily [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	10,501	13,140
Commercial Loans [Member] | Multifamily [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,884	508
Commercial Loans [Member] | Multifamily [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	314	337
Commercial Loans [Member] | Construction/Land Development [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	653,132	636,320
Commercial Loans [Member] | Construction/Land Development [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	645,968	615,675
Commercial Loans [Member] | Construction/Land Development [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	5,731	16,074
Commercial Loans [Member] | Construction/Land Development [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,433	3,083
Commercial Loans [Member] | Construction/Land Development [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	0	1,488
Commercial Loans [Member] | Commercial Business [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	245,859	223,653
Commercial Loans [Member] | Commercial Business [Member] | Pass [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	198,687	171,883
Commercial Loans [Member] | Commercial Business [Member] | Watch [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	42,290	42,767
Commercial Loans [Member] | Commercial Business [Member] | Special Mention [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	1,587	3,385
Commercial Loans [Member] | Commercial Business [Member] | Substandard [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Total loans	3,295	5,618
Fair Value, Measurements, Recurring [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Fair value of loans held for investment	5,546	17,988
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Designated Loan Grades by Loan Portfolio Segment and Loan Class [Abstract]
Fair value of loans held for investment	$ 5,546	$ 17,988

Loans and Credit Quality - Agin

Loans and Credit Quality - Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 69,371	$ 72,328
Current	4,269,451	3,777,123
Total loans	4,338,822	3,849,451
90-days or more past due and still accruing	37,185	40,846
Fair value of loans held for investment	5,546	17,988
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	12,327	4,834
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,736	6,106
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	52,308	61,388
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	64,378	65,596
Current	1,641,861	1,378,100
Total loans	1,706,239	1,443,696
90-days or more past due and still accruing	37,185	40,846
Consumer Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	9,525	4,561
Consumer Loans [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,736	5,901
Consumer Loans [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	50,117	55,134
Consumer Loans [Member] | Single Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	62,113	63,332
Current	1,207,371	1,020,490
Total loans	1,269,484	1,083,822
90-days or more past due and still accruing	37,185	40,846
Consumer Loans [Member] | Single Family [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	8,851	4,310
Consumer Loans [Member] | Single Family [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,615	5,459
Consumer Loans [Member] | Single Family [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	48,647	53,563
Consumer Loans [Member] | Home Equity and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,265	2,264
Current	434,490	357,610
Total loans	436,755	359,874
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	674	251
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	121	442
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	1,470	1,571
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,993	6,732
Current	2,627,590	2,399,023
Total loans	2,632,583	2,405,755
90-days or more past due and still accruing	0	0
Commercial Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,802	273
Commercial Loans [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	205
Commercial Loans [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,191	6,254
Commercial Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,637	2,403
Current	984,784	869,160
Total loans	986,421	871,563
90-days or more past due and still accruing	0	0
Commercial Loans [Member] | Commercial Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	913	71
Commercial Loans [Member] | Commercial Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	205
Commercial Loans [Member] | Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	724	2,127
Commercial Loans [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	314	337
Current	746,857	673,882
Total loans	747,171	674,219
90-days or more past due and still accruing	0	0
Commercial 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 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 Loans [Member] | Multifamily [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	314	337
Commercial Loans [Member] | Construction/Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	992	1,376
Current	652,140	634,944
Total loans	653,132	636,320
90-days or more past due and still accruing	0	0
Commercial Loans [Member] | Construction/Land Development [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	992	0
Commercial 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 Loans [Member] | Construction/Land Development [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	1,376
Commercial Loans [Member] | Commercial Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,050	2,616
Current	243,809	221,037
Total loans	245,859	223,653
90-days or more past due and still accruing	0	0
Commercial Loans [Member] | Commercial Business [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	897	202
Commercial 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 Loans [Member] | Commercial Business [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,153	2,414
Fair Value, Measurements, Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,546	17,988
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	$ 5,546	$ 17,988

Loans and Credit Quality - Perf

Loans and Credit Quality - Performing and Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	$ 4,323,699	$ 3,828,909
Nonaccrual	15,123	20,542
Total loans held for investment	4,338,822	3,849,451
Fair value of loans held for investment	5,546	17,988
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	1,693,307	1,429,408
Nonaccrual	12,932	14,288
Total loans held for investment	1,706,239	1,443,696
Consumer Loans [Member] | Single Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	1,258,022	1,071,105
Nonaccrual	11,462	12,717
Total loans held for investment	1,269,484	1,083,822
Consumer Loans [Member] | Home Equity and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	435,285	358,303
Nonaccrual	1,470	1,571
Total loans held for investment	436,755	359,874
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	2,630,392	2,399,501
Nonaccrual	2,191	6,254
Total loans held for investment	2,632,583	2,405,755
Commercial Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	985,697	869,436
Nonaccrual	724	2,127
Total loans held for investment	986,421	871,563
Commercial Loans [Member] | Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	746,857	673,882
Nonaccrual	314	337
Total loans held for investment	747,171	674,219
Commercial Loans [Member] | Construction/Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	653,132	634,944
Nonaccrual	0	1,376
Total loans held for investment	653,132	636,320
Commercial Loans [Member] | Commercial Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accrual	244,706	221,239
Nonaccrual	1,153	2,414
Total loans held for investment	245,859	223,653
Fair Value, Measurements, Recurring [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	5,546	17,988
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Fair value of loans held for investment	$ 5,546	$ 17,988

Loans and Credit Quality - TDRs

Loans and Credit Quality - TDRs (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	38	24	123	77
Recorded investment - TDR	$ 7,825	$ 5,365	$ 24,442	$ 15,685
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Interest Rate Reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	9	12	48	31
Recorded investment - TDR	$ 1,914	$ 2,592	$ 8,834	$ 5,994
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Payment Restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	29	12	75	46
Recorded investment - TDR	$ 5,911	$ 2,773	$ 15,608	$ 9,691
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	38	24	121	77
Recorded investment - TDR	$ 7,825	$ 5,365	$ 23,988	$ 15,685
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member] | Interest Rate Reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	9	12	48	31
Recorded investment - TDR	$ 1,914	$ 2,592	$ 8,834	$ 5,994
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member] | Payment Restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	29	12	73	46
Recorded investment - TDR	$ 5,911	$ 2,773	$ 15,154	$ 9,691
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member] | Single Family [Member] | Interest Rate Reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	9	11	48	29
Recorded investment - TDR	$ 1,914	$ 2,492	$ 8,834	$ 5,881
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member] | Single Family [Member] | Payment Restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan	29	12	71	46
Recorded investment - TDR	$ 5,911	$ 2,773	$ 14,803	$ 9,691
Related charge-offs - TDR	$ 0	$ 0	$ 0	$ 0
Consumer Loans [Member] | Home Equity and Other [Member] | Interest Rate Reduction [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan		1		2
Recorded investment - TDR		$ 100		$ 113
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			2
Recorded investment - TDR			$ 351
Related charge-offs - TDR			$ 0
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan			2
Recorded investment - TDR			$ 454
Related charge-offs - TDR			$ 0
Commercial Loans [Member] | Payment Restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan			2
Recorded investment - TDR			$ 454
Related charge-offs - TDR			$ 0
Commercial Loans [Member] | Commercial Real Estate [Member] | Payment Restructure [Member]
Financing Receivable, Impaired [Line Items]
Number of loan modifications - TDR | loan			1
Recorded investment - TDR			$ 436
Related charge-offs - TDR			$ 0
Commercial Loans [Member] | Commercial Business [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

Loans and Credit Quality - TDR

Loans and Credit Quality - TDR Re-defaults (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)loan	Sep. 30, 2017USD ($)loan	Sep. 30, 2016USD ($)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	8	7	16	17
Recorded investment | $	$ 1,743	$ 1,173	$ 3,395	$ 3,904
Consumer Loans [Member] | Single Family [Member]
TDR balances which have subsequently re-defaulted
Number of TDR loan relationships that re-defaulted | loan	8	7	16	16
Recorded investment | $	$ 1,743	$ 1,173	$ 3,395	$ 3,811
Consumer Loans [Member] | Home Equity and Other [Member]
TDR balances which have subsequently re-defaulted
Number of TDR loan relationships that re-defaulted | loan			0	1
Recorded investment | $			$ 0	$ 93

Loans and Credit Quality - Narr

Loans and Credit Quality - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)segment	Dec. 31, 2016USD ($)
Financing Receivable, Impaired [Line Items]
Number of portfolio segments | segment	2
Concentration percentage	10.00%	10.00%
Federal Home Loan Bank Advances [Member]
Financing Receivable, Impaired [Line Items]
Loans pledged as collateral	$ 1,750	$ 1,590
Federal Reserve Bank Advances [Member]
Financing Receivable, Impaired [Line Items]
Loans pledged as collateral	$ 724.9	$ 554.7
Washington | Single Family [Member]
Financing Receivable, Impaired [Line Items]
Percentage of loan portfolio	14.40%	13.80%
Washington | Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Percentage of loan portfolio	13.20%	14.40%
California | Single Family [Member]
Financing Receivable, Impaired [Line Items]
Percentage of loan portfolio	10.20%

Deposits - Schedule of Deposit

Deposits - Schedule of Deposit Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Deposit balances, including stated rates
Noninterest-bearing accounts	$ 1,087,425	$ 964,829
NOW accounts, 0.00% to 1.00% at September 30, 2017 and December 31, 2016	528,679	468,812
Statement savings accounts, due on demand, 0.05% to 1.13% at September 30, 2017 and December 31, 2016	308,217	301,361
Money market accounts, due on demand, 0.00% to 1.70% and at September 30, 2017 and December 31, 2016	1,563,921	1,603,141
Certificates of deposit, 0.05% to 3.80% at September 30, 2017 and December 31, 2016	1,182,244	1,091,558
Deposits, Total	$ 4,670,486	$ 4,429,701
Maximum [Member]
Short-term Debt [Line Items]
Weighted Average Rate, NOW accounts (as a percent)	1.00%	1.00%
Weighted Average Rate, Statement savings accounts (as a percent)	1.13%	1.13%
Weighted Average Rate, Money market accounts (as a percent)	1.70%	1.70%
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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest expense on deposits
NOW accounts	$ 500	$ 484	$ 1,480	$ 1,465
Statement savings accounts	256	262	761	771
Money market accounts	2,089	2,084	6,254	5,057
Certificates of deposit	3,175	2,532	9,015	6,087
Interest expense on deposits, Total	$ 6,020	$ 5,362	$ 17,510	$ 13,380

Deposits - Schedule of Deposits

Deposits - Schedule of Deposits Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Certificates of deposit outstanding
Within one year	$ 854,650
One to two years	267,893
Two to three years	31,851
Three to four years	13,714
Four to five years	14,051
Thereafter	85
Total	$ 1,182,244	$ 1,091,558

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Weighted-average interest rate on certificates of deposit (as a percent)	1.06%	0.96%
Aggregate amount of time deposits in denominations of 100,000	$ 467.6	$ 508.6
Aggregate amount of time deposits in denominations of 250,000	92.4	87.4
Brokered deposits	$ 324	$ 234.4

Derivatives and Hedging Activ57

Derivatives and Hedging Activities - Fair Value of Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Notional Amount	$ 7,620,783	$ 6,052,629
Derivatives before netting, Derivative assets	38,626	59,226
Netting adjustments, Derivative assets	3,993	10,174
Derivative Assets	42,619	69,400
Derivatives before netting, Derivative Liabilities	(24,525)	(42,399)
Netting adjustments, Derivative liabilities	22,853	37,836
Derivative Liabilities	(1,672)	(4,563)
Forward Sale Commitments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	2,127,585	3,596,677
Derivatives before netting, Derivative assets	3,907	24,623
Derivatives before netting, Derivative Liabilities	(3,871)	(15,203)
Interest Rate Swaptions [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	215,000	20,000
Derivatives before netting, Derivative assets	2	1
Derivatives before netting, Derivative Liabilities	0	0
Interest Rate Lock and Purchase Loan Commitments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	722,048	746,102
Derivatives before netting, Derivative assets	21,067	19,586
Derivatives before netting, Derivative Liabilities	(65)	(367)
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	2,030,150	1,689,850
Derivatives before netting, Derivative assets	13,515	15,016
Derivatives before netting, Derivative Liabilities	(20,589)	(26,829)
Eurodollar Futures [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	2,526,000
Derivatives before netting, Derivative assets	135
Derivatives before netting, Derivative Liabilities	0
Fair Value, Concentration of Credit Risk, Master Netting Arrangements [Member]
Derivatives, Fair Value [Line Items]
Cash collateral, as part of netting adjustment	$ 26,800	$ 48,000

Derivatives and Hedging Activ58

Derivatives and Hedging Activities - Master Netting Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Gross fair value, Derivative assets	$ 38,626	$ 59,226
Netting adjustments, Derivative assets	3,993	10,174
Derivative Assets	42,619	69,400
Securities pledged, Derivative assets	0	0
Net amount - Derivative assets	42,619	69,400
Derivatives before netting, Derivative Liabilities	(24,525)	(42,399)
Netting adjustments, Derivative liabilities	22,853	37,836
Derivative Liabilities	(1,672)	(4,563)
Securities pledged, Derivative liabilities	154	1,820
Net amount, Derivative liabilities	(1,518)	(2,743)
Fair Value, Concentration of Credit Risk, Master Netting Arrangements [Member]
Derivative [Line Items]
Cash collateral, as part of netting adjustment	$ 26,800	$ 48,000

Derivatives and Hedging Activ59

Derivatives and Hedging Activities - Gain (Loss) Recognized in Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	$ (9,180)	$ (3,675)	$ (20,788)	$ (4,006)
Servicing Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	2,807	3,162	12,060	57,110
Other Credit Derivatives [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	0	2,087	0	735
Mortgages [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized on derivatives, including economic hedge	$ (6,373)	$ 1,574	$ (8,728)	$ 53,839

Derivatives and Hedging Activ60

Derivatives and Hedging Activities - Narrative (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
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	Sep. 30, 2017	Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	$ 851,126	$ 714,559
Single Family [Member]
Mortgage Loans on Real Estate [Line Items]
Single family, held-for-sale	730,042	656,334
Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	47,014	35,506
Commercial Mortgage, excluding DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans held for sale	$ 74,070	$ 22,719

Mortgage Banking Operations -62

Mortgage Banking Operations - Loans Sold (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Mortgage Loans on Real Estate [Line Items]
Loans sold	$ 2,183,697	$ 2,598,154	$ 5,881,976	$ 6,432,306
Single Family [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	1,956,129	2,489,415	5,504,366	6,134,390
Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	102,075	58,484	214,236	215,848
Commercial Mortgage, excluding DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans sold	$ 125,493	$ 50,255	$ 163,374	$ 82,068

Mortgage Banking Operations - G

Mortgage Banking Operations - Gain on Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	$ 71,010	$ 92,600	$ 197,199	$ 239,493
Single Family [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Servicing value and secondary market gains	56,657	79,946	164,548	207,758
Loan origination and funding fees	7,356	8,931	19,960	21,614
Net gain on loan origination and sale activities	64,013	88,877	184,508	229,372
Multifamily DUS [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	4,152	2,695	8,785	7,879
Commercial Mortgage, excluding DUS [Member]
Gain on mortgage loan origination and sale activities [Line Items]
Net gain on loan origination and sale activities	$ 2,845	$ 1,028	$ 3,906	$ 2,242

Mortgage Banking Operations -64

Mortgage Banking Operations - Loans Serviced for Others (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	$ 23,184,386	$ 20,665,819
Single Family Residential [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	21,892,253	19,488,456
Agency Securities [Member] | Single Family Residential [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	21,378,395	18,931,835
Single Family other [Member] | Single Family Residential [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	513,858	556,621
Commercial Loans [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	1,292,133	1,177,363
Commercial Loans [Member] | Multifamily DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	1,213,459	1,108,040
Commercial Loans [Member] | Commercial Mortgage, excluding DUS [Member]
Mortgage Loans on Real Estate [Line Items]
Loans serviced for others	$ 78,674	$ 69,323

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		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Mortgage Repurchase Losses [Roll Forward]
Balance, beginning of period	$ 2,990	$ 3,379	$ 3,382	$ 2,922
Additions	(338)	495	(370)	1,407
Realized losses	(148)	(251)	(508)	(706)
Balance, end of period	$ 2,504	$ 3,623	$ 2,504	$ 3,623

Mortgage Banking Operations - R

Mortgage Banking Operations - Revenue from Mortgage Servicing (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Mortgage Loans on Real Estate [Line Items]
Servicing fees and other	$ 16,480	$ 14,104	$ 48,636	$ 39,460
Changes in fair value of single family MSRs due to modeled amortization	(9,167)	(8,925)	(26,596)	(23,940)
Amortization of multifamily MSRs	(811)	(661)	(2,503)	(1,946)
Net servicing income	6,502	4,518	19,537	13,574
Changes in fair value due to changes in model inputs and/or assumptions	(1,027)	4,915	(5,312)	(37,354)
Mortgage servicing rights, risk management	1,780	8,077	6,748	19,756
Mortgage servicing income	8,282	12,595	26,285	33,330
Servicing Contracts [Member]
Mortgage Loans on Real Estate [Line Items]
Net gain from derivatives economically hedging MSR	$ 2,807	$ 3,162	$ 12,060	$ 57,110

Mortgage Banking Operations - K

Mortgage Banking Operations - Key Economic Assumptions (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Mortgage Banking [Abstract]
Constant prepayment rate (CPR)	13.24%	14.77%	13.34%	15.67%
Discount rate	10.28%	10.19%	10.29%	10.34%

Mortgage Banking Operations - S

Mortgage Banking Operations - Sensitivity Analysis (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Key economic assumptions and the sensitivity of the current fair value for single family MSRs
Fair value of single family MSR	$ 244,106	$ 226,113
Expected weighted-average life	5 years 11 months 15 days
Constant prepayment rate (as a percent)	13.09%
Impact on fair value of 25 basis points decrease	$ (18,776)
Impact on fair value of 50 basis points decrease	$ (39,646)
Discount rate (as a percent)	10.40%
Impact on fair value of 100 basis points increase	$ (8,442)
Impact on fair value of 200 basis points increase	$ (16,324)

Mortgage Banking Operations -69

Mortgage Banking Operations - Single Family MSR Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance			$ 226,113
Changes due to modeled amortization	$ 9,167	$ 8,925	26,596	$ 23,940
Changes in fair value of MSR due to changes in market inputs and/or model updates	(1,027)	4,915	(5,312)	(37,354)
Ending balance	244,106		244,106
Single family MSRs [Member]
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	236,621	130,900	226,113	156,604
Originations	17,679	23,020	49,345	54,600
Purchases	0	0	565	0
Changes due to modeled amortization	(9,167)	(8,925)	(26,596)	(23,940)
Net additions and amortization	8,512	14,095	23,314	30,660
Changes in fair value of MSR due to changes in market inputs and/or model updates	(1,027)	4,915	(5,321)	(37,354)
Ending balance	$ 244,106	$ 149,910	$ 244,106	$ 149,910

Mortgage Banking Operations -70

Mortgage Banking Operations - Multifamily MSR Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Servicing Asset at Amortized Value, Balance [Roll Forward]
Beginning balance	$ 21,600	$ 16,366	$ 19,747	$ 14,651
Origination	3,177	1,886	6,722	4,886
Amortization	(811)	(661)	(2,503)	(1,946)
Ending balance	$ 23,966	$ 17,591	$ 23,966	$ 17,591

Mortgage Banking Operations -71

Mortgage Banking Operations - MSR Projected Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Projected Amortization Expense [Abstract]
Remainder of 2017	$ 824
2,018	3,254
2,019	3,152
2,020	3,078
2,021	2,868
2022 and thereafter	10,790
Carrying value of multifamily MSR	23,966	$ 21,600	$ 19,747	$ 17,591	$ 16,366	$ 14,651
Multifamily originations [Member]
Projected Amortization Expense [Abstract]
Carrying value of multifamily MSR	$ 23,966

Mortgage Banking Operations - N

Mortgage Banking Operations - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Servicing Advances	$ 6.5	$ 7.5
Early Buyout Loans [Member]
Financing Receivable, Impaired [Line Items]
Loans Receivable, in Ginnie Mae pool	$ 36.3	$ 35.8
Multifamily DUS [Member]
Financing Receivable, Impaired [Line Items]
Weighted average life of company's multifamily MSRs	10 years 3 months 10 days

Commitments, Guarantees and C73

Commitments, Guarantees and Contingencies - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)claim	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)claim	Sep. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Loss Contingencies [Line Items]
Unfunded loan commitments	$ 91,500,000		$ 91,500,000			$ 42,600,000
Allowance for unfunded commitments	$ 1,140,000	$ 1,258,000	$ 1,140,000	$ 1,258,000		1,300,000
Number of material claims pending | claim	0		0
Representations and Warranties Reserve for Loan Receivables [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	$ 21,970,000,000		$ 21,970,000,000			19,560,000,000
Reserve liability related to mortgage repurchase	2,504,000	3,623,000	2,504,000	3,623,000	$ 2,990,000	3,382,000	$ 3,379,000	$ 2,922,000
Undisbursed construction loan funds [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	680,800,000		680,800,000			603,800,000
Home Equity and Business Banking Credit Lines [Member]
Loss Contingencies [Line Items]
Unfunded commitment balance of loans sold on a servicing-retained basis	426,100,000		426,100,000			289,300,000
Loss Sharing Relationship [Member]
Loss Contingencies [Line Items]
Reserve liability related to multifamily DUS program	2,000,000		2,000,000			1,800,000
Loss Sharing Relationship [Member] | Multifamily [Member]
Loss Contingencies [Line Items]
UPB of loans sold through DUS	1,210,000,000		1,210,000,000			1,110,000,000
Losses incurred - related to DUS	0	$ 0	0	$ 0
Credit Risk [Member]
Loss Contingencies [Line Items]
Reserve liability related to mortgage repurchase	$ 2,500,000		$ 2,500,000			$ 3,400,000
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	Sep. 30, 2017	Dec. 31, 2016
Assets:
Investment securities available for sale	$ 862,851	$ 993,990
Single family mortgage servicing rights	244,106	226,113
Fair value of loans held for sale	730,042	656,334
Fair value of loans held for investment	5,546	17,988
Derivative assets	42,619	69,400
Liabilities:
Derivative liabilities	1,672	4,563
Residential Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	152,361	177,074
Commercial Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	20,215	25,536
Municipal Bonds [Member]
Assets:
Investment securities available for sale	369,278	467,673
Corporate Debt Securities [Member]
Assets:
Investment securities available for sale	28,730	51,122
Agency Securities [Member]
Assets:
Investment securities available for sale	9,763
Fair Value, Measurements, Recurring [Member]
Assets:
Single family mortgage servicing rights	244,106	226,113
Fair value of loans held for sale	730,042	656,334
Fair value of loans held for investment	5,546	17,988
Total assets	1,881,171	1,953,651
Liabilities:
Total liabilities	24,525	42,399
Fair Value, Measurements, Recurring [Member] | Residential Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	152,361	177,074
Fair Value, Measurements, Recurring [Member] | Commercial Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	20,215	25,536
Fair Value, Measurements, Recurring [Member] | Municipal Bonds [Member]
Assets:
Investment securities available for sale	369,278	467,673
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Obligations Residential [Member]
Assets:
Investment securities available for sale	184,937	191,201
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Obligations Commercial [Member]
Assets:
Investment securities available for sale	86,817	70,764
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Assets:
Investment securities available for sale	28,730	51,122
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Assets:
Investment securities available for sale	10,750	10,620
Fair Value, Measurements, Recurring [Member] | Agency Securities [Member]
Assets:
Investment securities available for sale	9,763
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Assets:
Single family 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	135	0
Liabilities:
Total liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Residential Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Commercial Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Municipal Bonds [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Collateralized Mortgage Obligations Residential [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Collateralized Mortgage Obligations Commercial [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Corporate Debt Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | US Treasury Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Agency Securities [Member]
Assets:
Investment securities available for sale	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Assets:
Single family mortgage servicing rights	0	0
Fair value of loans held for sale	729,951	614,524
Fair value of loans held for investment	0	0
Total assets	1,610,226	1,648,154
Liabilities:
Total liabilities	24,460	42,032
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Residential Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	152,361	177,074
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Commercial Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	20,215	25,536
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Municipal Bonds [Member]
Assets:
Investment securities available for sale	369,278	467,673
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations Residential [Member]
Assets:
Investment securities available for sale	184,937	191,201
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations Commercial [Member]
Assets:
Investment securities available for sale	86,817	70,764
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate Debt Securities [Member]
Assets:
Investment securities available for sale	28,730	51,122
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | US Treasury Securities [Member]
Assets:
Investment securities available for sale	10,750	10,620
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Agency Securities [Member]
Assets:
Investment securities available for sale	9,763
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Assets:
Single family mortgage servicing rights	244,106	226,113
Fair value of loans held for sale	91	41,810
Fair value of loans held for investment	5,546	17,988
Total assets	270,810	305,497
Liabilities:
Total liabilities	65	367
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Residential Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Commercial Mortgage-backed Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Municipal Bonds [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Collateralized Mortgage Obligations Residential [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Collateralized Mortgage Obligations Commercial [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate Debt Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | US Treasury Securities [Member]
Assets:
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Agency Securities [Member]
Assets:
Investment securities available for sale	0
Fair Value, Measurements, Recurring [Member] | Eurodollar Futures [Member]
Assets:
Derivative assets	135
Fair Value, Measurements, Recurring [Member] | Eurodollar Futures [Member] | Level 1 [Member]
Assets:
Derivative assets	135
Fair Value, Measurements, Recurring [Member] | Eurodollar Futures [Member] | Level 2 [Member]
Assets:
Derivative assets	0
Fair Value, Measurements, Recurring [Member] | Eurodollar Futures [Member] | Level 3 [Member]
Assets:
Derivative assets	0
Fair Value, Measurements, Recurring [Member] | Forward Sale Commitments [Member]
Assets:
Derivative assets	3,907	24,623
Liabilities:
Derivative liabilities	3,871	15,203
Fair Value, Measurements, Recurring [Member] | Forward Sale Commitments [Member] | Level 1 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Forward Sale Commitments [Member] | Level 2 [Member]
Assets:
Derivative assets	3,907	24,623
Liabilities:
Derivative liabilities	3,871	15,203
Fair Value, Measurements, Recurring [Member] | Forward Sale Commitments [Member] | Level 3 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaptions [Member]
Assets:
Derivative assets	2	1
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaptions [Member] | Level 1 [Member]
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaptions [Member] | Level 2 [Member]
Assets:
Derivative assets	2	1
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaptions [Member] | Level 3 [Member]
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock and Purchase Loan Commitments [Member]
Assets:
Derivative assets	21,067	19,586
Liabilities:
Derivative liabilities	65	367
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock and Purchase Loan Commitments [Member] | Level 1 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock and Purchase Loan Commitments [Member] | Level 2 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock and Purchase Loan Commitments [Member] | Level 3 [Member]
Assets:
Derivative assets	21,067	19,586
Liabilities:
Derivative liabilities	65	367
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member]
Assets:
Derivative assets	13,515	15,016
Liabilities:
Derivative liabilities	20,589	26,829
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Level 1 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Level 2 [Member]
Assets:
Derivative assets	13,515	15,016
Liabilities:
Derivative liabilities	20,589	26,829
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Level 3 [Member]
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	$ 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		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment carried at fair value	$ 5,546		$ 5,546		$ 17,988
Loans held for sale, fair value	$ 730,042		$ 730,042		656,334
Market price movement from comparable bond (as a percent)	7.10%	0.00%	100.00%	0.00%
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment carried at fair value	$ 5,546		$ 5,546		17,988
Loans held for sale, fair value	730,042		730,042		656,334
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans held for investment carried at fair value	5,546		5,546		17,988
Loans held for sale, fair value	$ 91		$ 91		$ 41,810
Fair Value, Measurements, 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)			3.73%		3.62%
Fair Value, Measurements, 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)			4.84%		4.97%
Fair Value, Measurements, 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)			4.13%		4.49%
Fair Value, Measurements, 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)			4.36%		3.46%
Market price movement from comparable bond (as a percent)			(0.58%)		(0.49%)
Fair Value, Measurements, 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)			4.36%		6.14%
Market price movement from comparable bond (as a percent)			(0.14%)		(0.11%)
Fair Value, Measurements, 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)			4.36%		4.23%
Market price movement from comparable bond (as a percent)			(0.36%)		(0.27%)

Fair Value Measurement - Sche76

Fair Value Measurement - Schedule of Fair Value Changes and Activity for Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loans Held for Sale [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	$ 29,259	$ 43,742	$ 41,810	$ 49,322
Additions	93	4,579	3,088	12,698
Transfers	(303)	(46)	12,797	(4,654)
Settlements	(28,913)	(3,566)	(58,396)	(11,926)
Realized/unrealized gains (losses)	(45)	(410)	792	(1,141)
Ending balance	91	44,299	91	44,299
Loans Held for Investment [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	5,134	22,362	17,988	21,544
Additions	127	342	127	601
Transfers	303	46	(12,272)	4,654
Settlements	0	(2,005)	(480)	(5,782)
Realized/unrealized gains (losses)	(18)	(198)	183	(470)
Ending balance	5,546	20,547	5,546	20,547
Interest Rate Lock and Purchase Loan Commitments [Member]
Fair Value Changes and Activity for Level 3 [Roll Forward]
Beginning balance	22,283	39,991	19,219	17,711
Settlements	(38,060)	(51,383)	(104,582)	(132,398)
Realized/unrealized gains (losses)	36,779	56,752	106,365	160,047
Ending balance	$ 21,002	$ 45,360	$ 21,002	$ 45,360

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	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate lock and purchase loan commitments, net	$ 21,002	$ 19,219	$ 22,283	$ 45,360	$ 39,991	$ 17,711
Minimum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	0.40%	0.50%
Fair value inputs, initial value of servicing	0.63%	0.65%
Maximum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	61.46%	60.34%
Fair value inputs, initial value of servicing	2.14%	2.27%
Weighted Average [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value inputs, fall-out factor	14.18%	11.95%
Fair value inputs, initial value of servicing	1.05%	1.08%

Fair Value Measurement - FV Uno

Fair Value Measurement - FV Unobservable Inputs - Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	$ 862,851		$ 862,851		$ 993,990
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis [Abstract]
Gains (losses) on loans held for investment			1,056	$ 863
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	2,286	$ 10,570	2,286	10,570
Other real estate owned	5,521	5,755	5,521	5,755
Total	7,807	16,325	7,807	16,325
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis [Abstract]
Gains (losses) on loans held for investment	(467)	(750)	(348)	(827)
Gains (losses) on other real estate owned	(33)	(1,160)	(33)	(1,551)
Total gains (losses)	(500)	(1,910)	(381)	(2,378)
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0	0	0
Other real estate owned	0	0	0	0
Total	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	0	0	0	0
Other real estate owned	0	0	0	0
Total	0	0	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	2,286	10,570	2,286	10,570
Other real estate owned	5,521	5,755	5,521	5,755
Total	$ 7,807	$ 16,325	$ 7,807	$ 16,325

Fair Value Measurement - FV of

Fair Value Measurement - FV of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Assets:
Investment securities held to maturity	$ 56,840		$ 49,488
Fair value of loans held for investment	5,546		17,988
Loans held for sale, fair value	730,042		656,334
Mortgage servicing rights - multifamily	23,966	$ 21,600	19,747	$ 17,591	$ 16,366	$ 14,651
Carrying value [Member]
Assets:
Cash and cash equivalents	55,050		53,932
Investment securities held to maturity	56,608		49,861
Fair value of loans held for investment	4,307,679		3,801,039
Loans held for sale - transferred from held for investment	69,450		17,512
Federal Home Loan Bank Stock	52,486		40,347
Liabilities:
Deposits	4,670,486		4,429,701
Federal Home Loan Bank advances	1,135,245		868,379
Long-term debt	125,280		125,147
Fair value [Member]
Assets:
Cash and cash equivalents	55,050		53,932
Investment securities held to maturity	56,840		49,488
Fair value of loans held for investment	4,334,941		3,840,990
Loans held for sale - transferred from held for investment	69,450		17,512
Federal Home Loan Bank Stock	52,486		40,347
Liabilities:
Deposits	4,649,934		4,410,213
Federal Home Loan Bank advances	1,137,651		870,782
Long-term debt	122,696		122,357
Level 1 [Member] | Fair value [Member]
Assets:
Cash and cash equivalents	55,050		53,932
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		0
Federal Home Loan Bank Stock	0		0
Liabilities:
Deposits	0		0
Federal Home Loan Bank advances	0		0
Long-term debt	0		0
Level 2 [Member] | Fair value [Member]
Assets:
Cash and cash equivalents	0		0
Investment securities held to maturity	56,840		49,488
Fair value of loans held for investment	0		0
Loans held for sale - transferred from held for investment	0		0
Federal Home Loan Bank Stock	52,486		40,347
Liabilities:
Deposits	4,649,934		4,410,213
Federal Home Loan Bank advances	1,137,651		870,782
Long-term debt	122,696		122,357
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	4,334,941		3,840,990
Loans held for sale - transferred from held for investment	69,450		17,512
Federal Home Loan Bank Stock	0		0
Liabilities:
Deposits	0		0
Federal Home Loan Bank advances	0		0
Long-term debt	0		0
Multifamily [Member] | Carrying value [Member]
Assets:
Loans held for sale, fair value	51,634		40,712
Mortgage servicing rights - multifamily	23,967		19,747
Multifamily [Member] | Fair value [Member]
Assets:
Loans held for sale, fair value	51,634		40,712
Mortgage servicing rights - multifamily	26,117		21,610
Multifamily [Member] | Level 1 [Member] | Fair value [Member]
Assets:
Loans held for sale, fair value	0		0
Mortgage servicing rights - multifamily	0		0
Multifamily [Member] | Level 2 [Member] | Fair value [Member]
Assets:
Loans held for sale, fair value	51,634		40,712
Mortgage servicing rights - multifamily	0		0
Multifamily [Member] | Level 3 [Member] | Fair value [Member]
Assets:
Loans held for sale, fair value	0		0
Mortgage servicing rights - multifamily	$ 26,117		$ 21,610

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between levels of fair value hierarchy	$ 0	$ 0	$ 0	$ 0
Fair value of loans held for investment	$ 5,546,000		$ 5,546,000		$ 17,988,000
Adjustments to appraisal value for commercial loans held for investment collateralized by real estate	7.10%	0.00%	100.00%	0.00%
Loans Receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)		7.00%
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)	42.20%		0.00%	7.00%
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%	63.40%
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)	54.80%		44.80%	58.40%
Real Estate Acquired in Satisfaction of Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)	0.00%		0.00%
Real Estate Acquired in Satisfaction of Debt [Member] | Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)		27.40%		27.40%
Real Estate Acquired in Satisfaction of Debt [Member] | Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)		49.10%		49.10%
Real Estate Acquired in Satisfaction of Debt [Member] | Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range of stated value (as a percent)		32.10%		32.10%
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans held for investment	$ 5,546,000		$ 5,546,000		17,988,000
Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of loans held for investment	$ 5,546,000		$ 5,546,000		$ 17,988,000

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of EPS Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income	$ 13,839	$ 27,701	$ 34,031	$ 55,857
Weighted average shares:
Basic weighted average number of shares outstanding (in shares)	26,883,392	24,811,169	26,857,006	24,398,683
Dilutive effect of outstanding common stock equivalents (in shares)	205,648	185,578	220,026	196,665
Diluted weighted-average number of shares outstanding (in shares)	27,089,040	24,996,747	27,077,032	24,595,348
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.51	$ 1.12	$ 1.27	$ 2.29
Diluted income per share (in dollars per share)	$ 0.51	$ 1.11	$ 1.26	$ 2.27
Aggregate number of common stock equivalents and unvested restricted stock (in shares)			912	0

Business Segments (Details)

Business Segments (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segment	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			2
Condensed income statement:
Net interest income	$ 50,840	$ 46,802	$ 143,359	$ 131,975
Provision for credit losses	250	1,250	750	3,750
Noninterest Income	83,884	111,745	239,353	285,929
Noninterest expense	114,697	114,399	332,815	326,783
Income before income taxes	19,777	42,898	49,147	87,371
Income tax expense	5,938	15,197	15,116	31,514
NET INCOME	13,839	27,701	34,031	55,857
Total assets	6,796,346	6,226,601	6,796,346	6,226,601	$ 6,243,700
Mortgage Banking [Member]
Condensed income statement:
Net interest income	5,526	7,463	14,693	18,597
Provision for credit losses	0	0	0	0
Noninterest Income	71,922	101,974	209,690	263,334
Noninterest expense	77,537	82,229	222,554	223,880
Income before income taxes	(89)	27,208	1,829	58,051
Income tax expense	34	9,640	498	20,948
NET INCOME	(123)	17,568	1,331	37,103
Total assets	1,032,510	1,103,899	1,032,510	1,103,899
Commercial and Consumer Banking [Member]
Condensed income statement:
Net interest income	45,314	39,339	128,666	113,378
Provision for credit losses	250	1,250	750	3,750
Noninterest Income	11,962	9,771	29,663	22,595
Noninterest expense	37,160	32,170	110,261	102,903
Income before income taxes	19,866	15,690	47,318	29,320
Income tax expense	5,904	5,557	14,618	10,566
NET INCOME	13,962	10,133	32,700	18,754
Total assets	$ 5,763,836	$ 5,122,702	$ 5,763,836	$ 5,122,702

Accumulated Other Comprehensi83

Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 629,284	$ 465,275
Amounts reclassified from accumulated other comprehensive loss	$ (215)	$ (31)	(577)	(94)
Other comprehensive income (loss)	1,021	(1,817)	6,020	10,380
Ending balance	671,469	586,028	671,469	586,028
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,413)	9,748	(10,412)	(2,449)
Other comprehensive income (loss) before reclassifications	1,236	(1,786)	6,597	10,474
Amounts reclassified from accumulated other comprehensive loss	(215)	(31)	(577)	(94)
Other comprehensive income (loss)	1,021	(1,817)	6,020	10,380
Ending balance	$ (4,392)	$ 7,931	$ (4,392)	$ 7,931

Accumulated Other Comprehensi84

Accumulated Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Gain on sale of investment securities available for sale	$ 331	$ 48	$ 888	$ 145
Income tax expense	5,938	15,197	15,116	31,514
Total, net of tax	215	31	577	94
Gains and Losses on Available-for-Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Gain on sale of investment securities available for sale	331	48	888	145
Income tax expense	$ 116	$ 17	$ 311	$ 51

Restructuring - Narrative (Deta

Restructuring - Narrative (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2017USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,877
Facility related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,332
Personnel related costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 545

Restructuring - Restructuring R

Restructuring - Restructuring Reserve Rollforward (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2017USD ($)
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	$ 71
Restructuring charges	3,877
Costs paid or otherwise settled	(1,459)
Balance at September 30, 2017	2,489
Facility related costs [Member]
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	0
Restructuring charges	3,332
Costs paid or otherwise settled	(1,279)
Balance at September 30, 2017	2,053
Personnel related costs [Member]
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	71
Restructuring charges	545
Costs paid or otherwise settled	(180)
Balance at September 30, 2017	$ 436