FS Bancorp (FSBW) 10-Q 11 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020
Document And Entity Information
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Entity Registrant Name	FS BANCORP, INC.
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		4,281,541
Entity Central Index Key	0001530249
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 12,928	$ 13,175
Interest-bearing deposits at other financial institutions	35,993	32,603
Total cash and cash equivalents	48,921	45,778
Certificates of deposit at other financial institutions	17,926	20,902
Securities available-for-sale, at fair value	156,466	126,057
Loans held for sale, at fair value	115,632	69,699
Loans receivable, net	1,393,070	1,336,346
Accrued interest receivable	6,326	5,908
Premises and equipment, net	28,655	28,770
Operating lease right-of-use ("ROU") assets	4,692	5,016
Federal Home Loan Bank ("FHLB") stock, at cost	10,921	8,045
Other real estate owned ("OREO")	90	168
Bank owned life insurance ("BOLI"), net	35,572	35,356
Servicing rights, held at the lower of cost or fair value	10,626	11,560
Goodwill	2,312	2,312
Core deposit intangible, net	5,281	5,457
Other assets	10,678	11,682
TOTAL ASSETS	1,847,168	1,713,056
LIABILITIES
Noninterest-bearing accounts	285,566	273,602
Interest-bearing accounts	1,160,703	1,118,806
Total deposits	1,446,269	1,392,408
Borrowings	159,114	84,864
Principal amount	10,000	10,000
Unamortized debt issuance costs	(110)	(115)
Total subordinated note less unamortized debt issuance costs	9,890	9,885
Operating lease liabilities	4,898	5,214
Deferred tax liability, net	2,260	1,971
Other liabilities	23,908	18,472
Total liabilities	1,646,339	1,512,814
COMMITMENTS AND CONTINGENCIES (NOTE 10)
STOCKHOLDERS' EQUITY
Preferred stock, $.01 par value; 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $.01 par value; 45,000,000 shares authorized; 4,332,196 and 4,459,041 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	43	44
Additional paid-in capital	84,517	89,268
Retained earnings	114,957	110,715
Accumulated other comprehensive income, net of tax	1,819	788
Unearned shares - Employee Stock Ownership Plan ("ESOP")	(507)	(573)
Total stockholders' equity	200,829	200,242
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,847,168	$ 1,713,056

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Items Included in Consolidated Statement of Financial Condition [Abstract]
Preferred stock par value, in dollars per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock par value, in dollars per share	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	4,332,196	4,459,041
Common stock, shares outstanding	4,332,196	4,459,041

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
INTEREST INCOME
Loans receivable, including fees	$ 20,740,000	$ 21,109,000
Interest and dividends on investment securities, cash and cash equivalents, and certificates of deposit at other financial institutions	1,209,000	1,202,000
Total interest and dividend income	21,949,000	22,311,000
INTEREST EXPENSE
Deposits	3,807,000	3,710,000
Borrowings	497,000	744,000
Subordinated note	172,000	168,000
Total interest expense	4,476,000	4,622,000
NET INTEREST INCOME	17,473,000	17,689,000
PROVISION FOR LOAN LOSSES	3,686,000	750,000
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	13,787,000	16,939,000
NONINTEREST INCOME
Service charges and fee income	924,000	1,658,000
Gain on sale of loans	5,899,000	2,397,000
Earnings on cash surrender value of BOLI	216,000	215,000
Other noninterest income	1,852,000	285,000
Total noninterest income	8,891,000	4,555,000
NONINTEREST EXPENSE
Salaries and benefits	9,547,000	8,243,000
Operations	2,403,000	2,044,000
Occupancy	1,109,000	1,112,000
Data processing	980,000	1,286,000
Loss (gain) on sale of OREO	2,000	(85,000)
OREO expenses		4,000
Loan costs	500,000	673,000
Professional and board fees	681,000	550,000
Federal Deposit Insurance Corporation ("FDIC") insurance	126,000	248,000
Marketing and advertising	146,000	135,000
Acquisition costs		374,000
Amortization of core deposit intangible	176,000	190,000
Impairment of servicing rights	514,000	23,000
Total noninterest expense	16,184,000	14,797,000
INCOME BEFORE PROVISION FOR INCOME TAXES	6,494,000	6,697,000
PROVISION FOR INCOME TAXES	1,327,000	1,505,000
NET INCOME	$ 5,167,000	$ 5,192,000
Basic earnings per share (in dollars per share)	$ 1.16	$ 1.19
Diluted earnings per share (in dollars per share)	$ 1.14	$ 1.15

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income	$ 5,167	$ 5,192
Securities available-for-sale:
Unrealized holding gain during period	2,364	1,328
Income tax provision related to unrealized holding gain	(508)	(285)
Other Comprehensive Income Cash Flow Hedges [Abstract]
Unrealized holding loss during period	(1,052)	0
Reclassification for losses included in net income	1
Income tax benefit related to unrealized holding loss	226	0
Other comprehensive income, net of tax	1,031	1,043
COMPREHENSIVE INCOME	$ 6,198	$ 6,235

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common StockRepurchase plan	Common Stock	Additional Paid-in CapitalRepurchase plan	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net of Tax	Unearned ESOP Shares	Repurchase plan	Total
Beginning balance at Dec. 31, 2018		$ 45		$ 91,466	$ 90,854	$ (1,479)	$ (848)		$ 180,038
Beginning Balance (in shares) at Dec. 31, 2018		4,492,478
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					5,192				5,192
Dividends paid ($0.21 and $0.14 per share for 2020 and 2019, respectively)					(663)				(663)
Share-based compensation				262					262
Common stock repurchased			$ (285)					$ (285)
Common stock repurchased (in shares)	(6,036)
Stock options exercised				44					44
Stock options shares exercised (in shares)		2,600
Other comprehensive income, net of tax						1,043			1,043
ESOP shares allocated				255			66		321
Ending balance at Mar. 31, 2019		$ 45		91,742	95,383	(436)	(782)		185,952
Ending Balance (in shares) at Mar. 31, 2019		4,489,042
Beginning balance at Dec. 31, 2019		$ 44		89,268	110,715	788	(573)		200,242
Beginning Balance (in shares) at Dec. 31, 2019		4,459,041
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					5,167				5,167
Dividends paid ($0.21 and $0.14 per share for 2020 and 2019, respectively)					(925)				(925)
Share-based compensation				224					224
Common stock repurchased		$ (1)		(4,988)					(4,989)
Common stock repurchased (in shares)		(136,243)
Stock options exercised				(246)					(246)
Stock options shares exercised (in shares)		9,398
Other comprehensive income, net of tax						1,031			1,031
ESOP shares allocated				259			66		325
Ending balance at Mar. 31, 2020		$ 43		$ 84,517	$ 114,957	$ 1,819	$ (507)		$ 200,829
Ending Balance (in shares) at Mar. 31, 2020		4,332,196

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends paid (in dollars per share)	$ 0.21	$ 0.14

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS (USED BY) FROM OPERATING ACTIVITIES
Net income	$ 5,167,000	$ 5,192,000
Adjustments to reconcile net income to net cash from operating activities
Provision for loan losses	3,686,000	750,000
Depreciation, amortization and accretion	2,178,000	2,321,000
Compensation expense related to stock options and restricted stock awards	224,000	262,000
ESOP compensation expense for allocated shares	325,000	321,000
Increase in cash surrender value of BOLI	(216,000)	(215,000)
Gain on sale of loans held for sale	(5,899,000)	(2,397,000)
Origination of loans held for sale	(259,191,000)	(125,281,000)
Proceeds from sale of loans held for sale	218,574,000	132,461,000
Impairment of servicing rights	514,000	23,000
Loss (gain) on sale of OREO	2,000	(85,000)
Changes in operating assets and liabilities
Accrued interest receivable	(418,000)	(51,000)
Other assets	5,058,000	(7,953,000)
Other liabilities	14,000	1,517,000
Net cash (used by) from operating activities	(29,982,000)	6,865,000
Activity in securities available-for-sale:
Maturities, prepayments, and calls	12,002,000	4,659,000
Purchases	(40,236,000)	(6,005,000)
Maturities of certificates of deposit at other financial institutions	2,976,000	0
Loan originations and principal collections, net	(27,573,000)	26,997,000
Purchase of portfolio loans	(32,743,000)	(321,000)
Proceeds from sale of portfolio loans	0	538,000
Proceeds from sale of OREO, net	76,000	684,000
Purchase of premises and equipment, net	(583,000)	(860,000)
Change in FHLB stock, net	(2,876,000)	1,730,000
Net cash (used by) from investing activities	(88,957,000)	27,422,000
CASH FLOWS FROM (USED BY) FINANCING ACTIVITIES
Net increase in deposits	53,992,000	47,331,000
Proceeds from borrowings	203,750,000	155,306,000
Repayments of borrowings	(129,500,000)	(205,725,000)
Dividends paid on common stock	(925,000)	(663,000)
Proceeds from stock options exercised, net		44,000
(Disbursements) from stock options exercised, net	246,000
Common stock repurchased	(4,989,000)	(285,000)
Net cash from (used by) financing activities	122,082,000	(3,992,000)
NET INCREASE IN CASH AND CASH EQUIVALENTS	3,143,000	30,295,000
CASH AND CASH EQUIVALENTS, beginning of year	45,778,000	32,779,000
CASH AND CASH EQUIVALENTS, end of year	48,921,000	63,074,000
Cash paid during the year for:
Interest on deposits and borrowings	4,285,000	4,462,000
Income taxes	0	0
SUPPLEMENTARY DISCLOSURES OF NONCASH OPERATING, INVESTING AND FINANCING ACTIVITIES
Change in unrealized gain on investment securities, net	2,364,000	1,328,000
Change in unrealized gain on cash flow hedges, net	(1,051,000)	0
Retention of gross mortgage servicing rights from loan sales	1,185,000	844,000
Property taken in settlement of loans	$ 0	$ 92,000

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	NOTE 1 - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations - FS Bancorp, Inc. (the “Company”) was incorporated in September 2011 as the holding company for 1st Security Bank of Washington (the “Bank” or “1st Security Bank”) in connection with the Bank’s conversion from the mutual to stock form of ownership which was completed on July 9, 2012. The Bank is a community-based savings bank with 21 full-service bank branches, a headquarters that accepts deposits, and seven home loan production offices in suburban communities in the greater Puget Sound area which includes Snohomish, King, Pierce, Jefferson, Kitsap, Clallam, Grays Harbor, Thurston, and Lewis counties, and one loan production office in the market area of the Tri-Cities, Washington. The Bank provides loan and deposit services to customers who are predominantly small- and middle-market businesses and individuals. The Company and its subsidiary are subject to regulation by certain federal and state agencies and undergo periodic examination by these regulatory agencies. Financial Statement Presentation - The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and in accordance with the instructions to Form 10‑Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). It is recommended that these unaudited interim consolidated financial statements be read in conjunction with the Company’s Annual Report on Form 10‑K with all of the audited information and footnotes required by U.S. GAAP for complete financial statements for the year ended December 31, 2019, as filed with the SEC on March 16, 2020. In the opinion of management, all normal adjustments and recurring accruals considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. The results for the three months ended March 31, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020, or any other future period. The preparation of financial statements, in conformity with U.S. GAAP, requires management to make estimates and assumptions that affect amounts reported in the financial statements. Actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses, fair value of financial instruments, the valuation of servicing rights, deferred income taxes, and if needed, a deferred tax asset valuation allowance. Amounts presented in the consolidated financial statements and footnote tables are rounded and presented to the nearest thousands of dollars except per share amounts. If the amounts are above $1.0 million, they are rounded one decimal point, and if they are above $1.0 billion, they are rounded two decimal points. Principles of Consolidation - The consolidated financial statements include the accounts of FS Bancorp, Inc. and its wholly owned subsidiary, 1st Security Bank of Washington. All material intercompany accounts have been eliminated in consolidation. Segment Reporting - The Company operates in two business segments through the Bank: commercial and consumer banking and home lending. 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 regularly reviewed for the purpose of allocating resources and evaluating performance of the Company’s businesses. The results for these business segments are based on management’s accounting process, which assigns income statement items and assets to each responsible operating segment. This process is dynamic and is based on management’s view of the Company’s operations. See “Note 15 - Business Segments.” Subsequent Events - The Company has evaluated events and transactions subsequent to March 31, 2020 for potential recognition or disclosure. RECENT ACCOUNTING PRONOUNCEMENTS In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016‑13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as amended by ASU 2018-19, ASU 2019-10, and ASU 2019-11. The ASU is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. The ASU requires the recognition and measurement of all current expected credit losses (“CECL”) for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the approach under CECL. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances. The ASU requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The ASU and associated amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022. Early adoption will be permitted for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company has selected a third-party vendor to assist in the implementation of this ASU and has run parallel computations as it continues to evaluate the impact of adoption of the new standard. As part of the implementation, management is also evaluating economic variables and forecast time horizons it believes to be most relevant based on the composition of the loans portfolio to develop a reasonable and supportable forecast, likely to include forecasted levels of employment, gross domestic product, and home price index, depending on the nature of the loan segment, as well as various loss methodologies to estimate expected credit losses. In addition, management has kept current on evolving interpretations and industry practices related to ASU 2016-13 via webcasts, publications, and conferences. Once adopted, the Company anticipates the allowance for loan losses to increase through a one‑time adjustment to retained earnings, however, until the evaluation is complete the magnitude of the potential increase will be unknown. In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments . This ASU clarifies and improves areas of guidance related to the recently issued standards on credit losses, hedging, and recognition and measurement including improvements resulting from various FASB Transition Resource Group meetings. Early adoption is permitted. The Company plans to adopt Topic 326 of this ASU, in conjunction with ASU No. 2016-13, on January 1, 2023. The adoption of Topic 815 is not expected to have a material impact on the Company’s consolidated financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief . The amendments in this ASU provide entities that have certain instruments within the scope of Subtopic 326-20 with an option to irrevocably elect the fair value option in Subtopic 825-10, applied on an instrument-by-instrument basis for eligible instruments, upon the adoption of Topic 326. The fair value option election does not apply to held-to-maturity debt securities. An entity that elects the fair value option should subsequently measure those instruments at fair value with changes in fair value flowing through earnings. This ASU is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. The ASU should be applied on a modified-retrospective basis by means of a cumulative-effect adjustment to the opening balance of retained earnings balance in the balance sheet. Early adoption is permitted. The Company is currently assessing the impact that ASU 2019-05 will have on its consolidated financial statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740, Income Taxes. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. The Company does not expect the adoption of ASU 2019-12 to have a material impact on its consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of reference Rate Reform on Financial Reporting. This ASU applies to contracts, hedging relationships and other transactions that reference LIBOR or other rate references expected to be discontinued because of reference rate reform. The ASU permits an entity to make necessary modifications to eligible contracts or transactions without requiring contract remeasurement or reassessment of a previous accounting determination. For a cash flow hedge, a change in the method used to assess hedge effectiveness will not result in dedesignation of the hedging relationship if certain criteria are met. This ASU is effective for all entities as of March 12, 2020 through December 31, 2022. The Company is party to cash flow hedge arrangements where the hedge effectiveness is based on LIBOR. The Company is currently evaluating the impact of the reference rate reform on the Company’s consolidated financial statements. Recent Events - On March 22, 2020, the federal banking agencies issued an “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus”. This guidance encourages financial institutions to work prudently with borrowers that may be unable to meet their contractual obligations because of the effects of the novel coronavirus of 2019 (“COVID-19”) pandemic. The guidance provides that short-term modifications (e.g. six months) made on a good faith basis to borrowers who were current as of the implementation date of a relief program are not Troubled Debt Restructurings (“TDRs”). The Coronavirus Aid, Relief, and Economic Security Act of 2020 signed into law on March 27, 2020 ("CARES Act") provided similar guidance around the modification of loans as a result of the COVID-19 pandemic, providing, among other criteria, that modifications made between March 1, 2020, and the earlier of December 31, 2020, or 60 days after the COVID-19 emergency is terminated, on a good faith basis to borrowers who were current as of December 31, 2019, are not TDRs. This includes modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment. Borrowers are considered current under the CARES Act if they are not more than 30 days past due on their contractual payments as of December 31, 2019. Through March 31, 2020, the Bank had applied the interagency statement guidance and modified 66 individual loans with aggregate principal balances totaling $12.5 million. More of these types of modifications are likely to be executed in the second quarter of 2020. The majority of these modifications involved short-term extensions and/or interest-only periods. For additional information, see “NOTE 18 - COVID - 19 Pandemic.” Application of New Accounting Guidance Adopted in 2020 On January 1, 2020, the Company adopted FASB ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement . This ASU contains some technical adjustments related to the fair value disclosure requirements of public companies. Included in this ASU is the additional disclosure requirement of unrealized gains and losses for the period in recurring level 3 fair value disclosures and the range and weighted average of significant unobservable inputs, among other technical changes. The adoption of ASU 2018-13 did not have a material impact on the Company's consolidated financial statements.

Investments

Investments	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investments	NOTE 2 - INVESTMENTS The following tables present the amortized costs, unrealized gains, unrealized losses, and estimated fair values of securities available-for-sale at March 31, 2020 and December 31, 2019: March 31, 2020 Estimated Amortized Unrealized Unrealized Fair SECURITIES AVAILABLE-FOR-SALE Cost Gains Losses Values U.S. agency securities $ 6,991 $ 136 $ — $ 7,127 Corporate securities 19,858 144 (151) 19,851 Municipal bonds 31,062 475 (131) 31,406 Mortgage-backed securities 74,503 2,271 (41) 76,733 U.S. Small Business Administration securities 20,684 672 (7) 21,349 Total securities available-for-sale $ 153,098 $ 3,698 $ (330) $ 156,466 December 31, 2019 Estimated Amortized Unrealized Unrealized Fair SECURITIES AVAILABLE-FOR-SALE Cost Gains Losses Values U.S. agency securities $ 8,986 $ 95 $ (15) $ 9,066 Corporate securities 10,525 52 (7) 10,570 Municipal bonds 20,516 604 — 21,120 Mortgage-backed securities 62,745 405 (300) 62,850 U.S. Small Business Administration securities 22,281 191 (21) 22,451 Total securities available-for-sale $ 125,053 $ 1,347 $ (343) $ 126,057 At March 31, 2020, the Bank pledged seven securities held at the FHLB of Des Moines with a carrying value of $6.9 million to secure Washington State public deposits of $11.4 million with a $4.1 million collateral requirement by the Washington Public Deposit Protection Commission. At Decemb er 31, 2019, t he Bank pledged seven securities held at the FHLB of Des Moines with a carrying value of $7.4 million to secure Washington State public deposits of $10.3 million with a $4.0 million minimum collateral requirement by the Washington Public Deposit Protection Commission. Investment securities that were in an unrealized loss position at March 31, 2020 and December 31, 2019 are presented in the following tables, based on the length of time individual securities have been in an unrealized loss position. Management believes that these securities are only temporarily impaired due to changes in market interest rates or the widening of market spreads subsequent to the initial purchase of the securities, and not due to concerns regarding the underlying credit of the issuers or the underlying collateral. March 31, 2020 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized SECURITIES AVAILABLE-FOR-SALE Value Losses Value Losses Value Losses Corporate securities $ 7,729 $ (151) $ — $ — $ 7,729 $ (151) Municipal bonds 10,285 (131) — — 10,285 (131) Mortgage-backed securities 4,578 (19) 2,411 (22) 6,989 (41) U.S. Small Business Administration securities 1,955 (7) — — 1,955 (7) Total $ 24,547 $ (308) $ 2,411 $ (22) $ 26,958 $ (330) December 31, 2019 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized SECURITIES AVAILABLE-FOR-SALE Value Losses Value Losses Value Losses U.S. agency securities $ 2,977 $ (15) $ — $ — $ 2,977 $ (15) Corporate securities 1,993 (7) — — 1,993 (7) Mortgage-backed securities 12,345 (154) 11,459 (146) 23,804 (300) U.S. Small Business Administration securities 4,395 (21) — — 4,395 (21) Total $ 21,710 $ (197) $ 11,459 $ (146) $ 33,169 $ (343) There were 14 investments with unrealized losses of less than one year, and two investments with unrealized losses of more than one year at March 31, 2020. There were 13 investments with unrealized losses of less than one year, and 10 investments with unrealized losses of more than one year at December 31, 2019. The unrealized losses associated with these investments are believed to be caused by changing market conditions that are considered to be temporary and the Company does not intend to sell the securities, and it is not likely to be required to sell these securities prior to maturity. Based on the Company’s evaluation of these securities, no other-than-temporary impairment was recorded for the three months ended March 31, 2020, or for the year ended December 31, 2019. Additional deterioration in market and economic conditions related to the COVID-19 pandemic, may have an adverse impact on credit quality in the future and result in other-than-temporary impairment charges. The contractual maturities of securities available-for-sale at March 31, 2020 and December 31, 2019 are listed below. Expected maturities of mortgage-backed securities may differ from contractual maturities because borrowers may have the right to call or prepay the obligations; therefore, these securities are classified separately with no specific maturity date. March 31, 2020 December 31, 2019 Amortized Fair Amortized Fair U.S. agency securities Cost Value Cost Value Due after one year through five years $ 992 $ 1,068 $ 996 $ 1,036 Due after five years through ten years 3,999 4,041 3,997 4,027 Due after ten years 2,000 2,018 3,993 4,003 Subtotal 6,991 7,127 8,986 9,066 Corporate securities Due in one year or less 5,024 5,003 5,034 5,044 Due after one year through five years 5,854 5,763 3,491 3,532 Due after five years through ten years 8,980 9,085 2,000 1,994 Subtotal 19,858 19,851 10,525 10,570 Municipal bonds Due after one year through five years 3,768 3,680 3,774 3,833 Due after five years through ten years 5,215 5,301 3,162 3,307 Due after ten years 22,079 22,425 13,580 13,980 Subtotal 31,062 31,406 20,516 21,120 Mortgage-backed securities Federal National Mortgage Association (“FNMA”) 51,139 52,933 42,131 42,333 Federal Home Loan Mortgage Corporation (“FHLMC”) 17,698 18,083 15,250 15,179 Government National Mortgage Association (“GNMA”) 5,666 5,717 5,364 5,338 Subtotal 74,503 76,733 62,745 62,850 U.S. Small Business Administration securities Due after one year through five years 1,186 1,210 1,546 1,555 Due after five years through ten years 10,467 10,787 11,500 11,598 Due after ten years 9,031 9,352 9,235 9,298 Subtotal 20,684 21,349 22,281 22,451 Total $ 153,098 $ 156,466 $ 125,053 $ 126,057 There were no sales proceeds, gains or losses for the three months ended March 31, 2020, or March 31, 2019, from securities available-for-sale. The Bank received 7,158 shares of Class B common stock in Visa, Inc. (“Visa”) at no cost as a result of the Visa initial public offering in March 2008. During the first quarter of 2020, a one-time net gain of $1.5 million on the sale of equity investment securities included in other noninterest income on the Consolidated Statements of Income related to the sale of Class B Visa stock was recognized, which had been held at a carrying cost and fair value of zero due to the litigation liability associated with the stock. At March 31, 2020, the Bank no longer had any involvement or exposure to Visa litigation related to the shares sold during the quarter ended March 31, 2020.

Loans Receivable and Allowance

Loans Receivable and Allowance For Loan Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans Receivable and Allowance For Loan Losses	NOTE 3 - LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES The composition of the loan portfolio was as follows at March 31, 2020 and December 31, 2019: March 31, December 31, REAL ESTATE LOANS 2020 2019 Commercial $ 220,509 $ 210,749 Construction and development 168,658 179,654 Home equity 37,503 38,167 One-to-four-family (excludes loans held for sale) 305,436 261,539 Multi-family 130,570 133,931 Total real estate loans 862,676 824,040 CONSUMER LOANS Indirect home improvement 261,566 254,691 Marine 69,473 67,179 Other consumer 4,056 4,340 Total consumer loans 335,095 326,210 COMMERCIAL BUSINESS LOANS Commercial and industrial 149,086 140,531 Warehouse lending 65,017 61,112 Total commercial business loans 214,103 201,643 Total loans receivable, gross 1,411,874 1,351,893 Allowance for loan losses (16,872) (13,229) Deferred costs and fees, net (3,425) (3,273) Premiums on purchased loans, net 1,493 955 Total loans receivable, net $ 1,393,070 $ 1,336,346 Most of the Company’s commercial and multi-family real estate, construction, residential, and/or commercial business lending activities are with customers located in Western Washington and near the loan production office located in the Tri-Cities, Washington. The Company originates real estate, consumer, and commercial business loans and has concentrations in these areas, however, indirect home improvement loans, including solar-related home improvement loans, are originated through a network of home improvement contractors and dealers located throughout Washington, Oregon, California, Idaho, Colorado, Arizona, and just recently, Minnesota and Nevada. Loans are generally secured by collateral and rights to collateral vary and are legally documented to the extent practicable. Local economic conditions may affect borrowers’ ability to meet the stated repayment terms. At March 31, 2020, the Bank held approximately $706.4 million in loans that qualify as collateral for FHLB advances, compared to approximately $646.1 million at December 31, 2019. The Bank held approximately $327.4 million in loans that qualify as collateral for the Federal Reserve Bank line of credit at March 31, 2020, compared to approximately $318.8 million at December 31, 2019. The Company has defined its loan portfolio into three segments that reflect the structure of the lending function, the Company’s strategic plan and the manner in which management monitors performance and credit quality. The three loan portfolio segments are: (a) Real Estate Loans, (b) Consumer Loans, and (c) Commercial Business Loans. Each of these segments is disaggregated into classes based on the risk characteristics of the borrower and/or the collateral type securing the loan. The following is a summary of each of the Company’s loan portfolio segments and classes: Real Estate Loans Commercial Lending . Loans originated by the Company primarily secured by income producing properties, including retail centers, warehouses, and office buildings located in our market areas. Construction and Development Lending . Loans originated by the Company for the construction of, and secured by, commercial real estate, one-to-four-family, and multi-family residences and tracts of land for development that are not pre-sold. A small portion of the one-to-four-family construction portfolio is custom construction loans to the intended occupant of the residence. Home Equity Lending . Loans originated by the Company secured by second mortgages on one-to-four-family residences, including home equity lines of credit in our market areas. One-to-Four-Family Real Estate Lending . One-to-four-family residential loans include owner occupied properties (including second homes), and non-owner occupied properties with four or less units. These loans originated by the Company or purchased from banks are secured by first mortgages on one-to-four-family residences in our market areas that the Company intends to hold (excludes loans held for sale). Multi-Family Lending . Apartment term lending (five or more units) to current banking customers and community reinvestment loans for low to moderate income individuals in the Company’s footprint. Consumer Loans Indirect Home Improvement . Fixture secured loans for home improvement are originated by the Company through its network of home improvement contractors and dealers and are secured by the personal property installed in, on, or at the borrower’s real property, and may be perfected with a UCC‑2 financing statement filed in the county of the borrower’s residence. These indirect home improvement loans include replacement windows, siding, roofing, pools, and other home fixture installations, including solar related home improvement projects. Marine . Loans originated by the Company, secured by boats, to borrowers primarily located in the states we originate consumer loans. Other Consumer. Loans originated by the Company to consumers in our retail branch footprint, including automobiles, recreational vehicles, direct home improvement loans, loans on deposits, and other consumer loans, primarily consisting of personal lines of credit and credit cards. Commercial Business Loans Commercial and Industrial Lending (“C&I”) . Loans originated by the Company to local small- and mid-sized businesses in our Puget Sound market area are secured primarily by accounts receivable, inventory, or personal property, plant and equipment. Some of the C&I loans purchased by the Company are outside of the Greater Puget Sound market area. C&I loans are made on the basis of the borrower’s ability to make repayment from the cash flow of the borrower’s business. Warehouse Lending . Loans originated to non-depository financial institutions and secured by notes originated by the non-depository financial institution. The Company has two distinct warehouse lending divisions: commercial warehouse re-lending secured by notes on construction loans and mortgage warehouse re-lending secured by notes on one-to-four-family loans. The Company’s commercial construction warehouse lines are secured by notes on construction loans and typically guaranteed by principals with experience in construction lending. Mortgage warehouse lending loans are funded through third-party residential mortgage bankers. Under this program the Company provides short-term funding to the mortgage banking companies for the purpose of originating residential mortgage loans for sale into the secondary market. The following tables detail activity in the allowance for loan losses by loan categories at or for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 Commercial ALLOWANCE FOR LOAN LOSSES Real Estate Consumer Business Unallocated Total Beginning balance $ 6,206 $ 3,766 $ 3,254 $ 3 $ 13,229 Provision for loan losses 1,019 660 824 1,183 3,686 Charge-offs — (370) (11) — (381) Recoveries 18 143 177 — 338 Net recoveries (charge-offs) 18 (227) 166 — (43) Ending balance $ 7,243 $ 4,199 $ 4,244 $ 1,186 $ 16,872 Period end amount allocated to: Loans individually evaluated for impairment $ 15 $ 231 $ — $ — $ 246 Loans collectively evaluated for impairment 7,228 3,968 4,244 1,186 16,626 Ending balance $ 7,243 $ 4,199 $ 4,244 $ 1,186 $ 16,872 LOANS RECEIVABLE Loans individually evaluated for impairment $ 2,528 $ 664 $ — $ — $ 3,192 Loans collectively evaluated for impairment 860,148 334,431 214,103 — 1,408,682 Ending balance $ 862,676 $ 335,095 $ 214,103 $ — $ 1,411,874 At or For the Three Months Ended March 31, 2019 Commercial ALLOWANCE FOR LOAN LOSSES Real Estate Consumer Business Unallocated Total Beginning balance $ 5,761 $ 3,351 $ 3,191 $ 46 $ 12,349 Provision (recapture) for loan losses 24 114 691 (79) 750 Charge-offs — (250) (1,152) — (1,402) Recoveries — 148 — — 148 Net charge-offs — (102) (1,152) — (1,254) Ending balance $ 5,785 $ 3,363 $ 2,730 $ (33) $ 11,845 Period end amount allocated to: Loans individually evaluated for impairment $ 173 $ 160 $ — $ — $ 333 Loans collectively evaluated for impairment 5,612 3,203 2,730 (33) 11,512 Ending balance $ 5,785 $ 3,363 $ 2,730 $ (33) $ 11,845 LOANS RECEIVABLE Loans individually evaluated for impairment $ 1,156 $ 457 $ 431 $ — $ 2,044 Loans collectively evaluated for impairment 832,259 283,959 178,808 — 1,295,026 Ending balance $ 833,415 $ 284,416 $ 179,239 $ — $ 1,297,070 Non-accrual and Past Due Loans . Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are automatically placed on non-accrual once the loan is 90 days past due or sooner if, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, or as required by regulatory authorities. The exception is the legacy Anchor Bank credit card portfolio which is serviced externally and loans are manually placed on non-accrual once the credit card payment is 90 days past due. As a result of the negative impact on employment from the COVID-19 pandemic, we are anticipating higher levels of financial hardship for our customers, which we expect will lead to higher levels of forbearance, delinquency and defaults. We expect that, left unabated, this deterioration in forbearance, delinquency and default rates will persist until such time as the economy and employment return to relatively normal levels. We assist customers with an array of payment programs during periods of financial hardship, including forbearance. Forbearance allows a borrower to temporarily not make scheduled payments or to make smaller than scheduled payments, in each case for a specified period of time. Forbearance does not grant any reduction in the total principal or interest repayment obligation. While a loan is in forbearance status, interest continues to accrue and is repaid over a specified time period when the loan re-enters repayment status. The following tables provide information pertaining to the aging analysis of contractually past due loans and non-accrual loans at March 31, 2020 and December 31, 2019: March 31, 2020 30-59 60-89 Days Days 90 Days Total Total Past Past or More Past Loans Non- REAL ESTATE LOANS Due Due Past Due Due Current Receivable Accrual Commercial $ — $ — $ — $ — $ 220,509 $ 220,509 $ 1,083 Construction and development — — — — 168,658 168,658 — Home equity 204 289 220 713 36,790 37,503 220 One-to-four-family 2,203 — 1,112 3,315 302,121 305,436 1,225 Multi-family — — — — 130,570 130,570 — Total real estate loans 2,407 289 1,332 4,028 858,648 862,676 2,528 CONSUMER LOANS Indirect home improvement 654 266 171 1,091 260,475 261,566 533 Marine 14 — 124 138 69,335 69,473 124 Other consumer 22 12 2 36 4,020 4,056 7 Total consumer loans 690 278 297 1,265 333,830 335,095 664 COMMERCIAL BUSINESS LOANS Commercial and industrial — — — — 149,086 149,086 — Warehouse lending — — — — 65,017 65,017 — Total commercial business loans — — — — 214,103 214,103 — Total loans $ 3,097 $ 567 $ 1,629 $ 5,293 $ 1,406,581 $ 1,411,874 $ 3,192 December 31, 2019 30-59 60-89 Days Days 90 Days Total Total Past Past or More Past Loans Non- REAL ESTATE LOANS Due Due Past Due Due Current Receivable Accrual Commercial $ — $ — $ — $ — $ 210,749 $ 210,749 $ 1,086 Construction and development 533 — — 533 179,121 179,654 — Home equity 109 — 185 294 37,873 38,167 190 One-to-four-family 894 114 1,150 2,158 259,381 261,539 1,264 Multi-family — — — — 133,931 133,931 — Total real estate loans 1,536 114 1,335 2,985 821,055 824,040 2,540 CONSUMER LOANS Indirect home improvement 692 227 147 1,066 253,625 254,691 468 Marine 15 — — 15 67,164 67,179 — Other consumer 71 2 20 93 4,247 4,340 25 Total consumer loans 778 229 167 1,174 325,036 326,210 493 COMMERCIAL BUSINESS LOANS Commercial and industrial — — — — 140,531 140,531 — Warehouse lending — — — — 61,112 61,112 — Total commercial business loans — — — — 201,643 201,643 — Total loans $ 2,314 $ 343 $ 1,502 $ 4,159 $ 1,347,734 $ 1,351,893 $ 3,033 There were no loans 90 days or more past due and still accruing interest at March 31, 2020, or at December 31, 2019. The following tables provide additional information about our impaired loans that have been segregated to reflect loans for which an allowance for loan losses has been provided and loans for which no allowance was provided at March 31, 2020 and December 31, 2019: March 31, 2020 Unpaid WITH NO RELATED ALLOWANCE RECORDED Principal Recorded Related Real estate loans: Balance Investment Allowance Commercial $ 1,094 $ 1,083 $ — Home equity 271 220 — One-to-four-family 1,193 1,165 — Consumer loans: Other consumer 5 5 — 2,563 2,473 — WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 61 60 15 Consumer loans: Indirect 533 533 187 Marine 124 124 43 Other consumer 2 2 1 720 719 246 Total $ 3,283 $ 3,192 $ 246 December 31, 2019 Unpaid WITH NO RELATED ALLOWANCE RECORDED Principal Recorded Related Real estate loans: Balance Investment Allowance Commercial $ 1,097 $ 1,086 $ — Home equity 278 225 — One-to-four-family 1,293 1,264 Consumer loans Other consumer 17 17 — 2,685 2,592 — WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 61 60 15 Consumer loans: Indirect 468 468 164 Other consumer 8 8 3 537 536 182 Total $ 3,222 $ 3,128 $ 182 The following tables present the average recorded investment in loans individually evaluated for impairment and the interest income recognized and received for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 March 31, 2019 WITH NO RELATED ALLOWANCE RECORDED Average Recorded Interest Income Average Recorded Interest Income Real estate loans: Investment Recognized Investment Recognized Commercial $ 1,084 $ 8 $ — $ — Home equity 220 — 267 — One-to-four-family 1,230 5 830 15 Consumer loans: Other consumer 5 — — — Commercial business loans: Commercial and industrial — — 431 — 2,539 13 1,528 15 WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 60 — 1,156 — Consumer loans: Indirect 548 13 441 9 Marine 41 — 13 — Other consumer 1 — 5 — Commercial business loans: Commercial and industrial — — 1,152 7 650 13 2,767 16 Total $ 3,189 $ 26 $ 4,295 $ 31 Credit Quality Indicators As part of the Company’s on-going monitoring of credit quality of the loan portfolio, management tracks certain credit quality indicators including trends related to (i) the risk grading of loans, (ii) the level of classified loans, (iii) net charge-offs, (iv) non-performing loans, and (v) the general economic conditions in the Company’s markets. The Company utilizes a risk grading matrix to assign a risk grade to its real estate and commercial business loans. Loans are graded on a scale of 1 to 10, with loans in risk grades 1 to 6 considered “Pass” and loans in risk grades 7 to 10 are reported as classified loans in the Company’s allowance for loan loss analysis. A description of the 10 risk grades is as follows: · Grades 1 and 2 - These grades include loans to very high quality borrowers with excellent or desirable business credit. · Grade 3 - This grade includes loans to borrowers of good business credit with moderate risk. · Grades 4 and 5 - These grades include “Pass” grade loans to borrowers of average credit quality and risk. · Grade 6 - This grade includes loans on management’s “Watch” list and is intended to be utilized on a temporary basis for “Pass” grade borrowers where frequent and thorough monitoring is required due to credit weaknesses and where significant risk-modifying action is anticipated in the near term. · Grade 7 - This grade is for “Other Assets Especially Mentioned” (“OAEM”) in accordance with regulatory guidelines and includes borrowers where performance is poor or significantly less than expected. · Grade 8 - This grade includes “Substandard” loans in accordance with regulatory guidelines which represent an unacceptable business credit where a loss is possible if loan weakness is not corrected. · Grade 9 - This grade includes “Doubtful” loans in accordance with regulatory guidelines where a loss is highly probable. · Grade 10 - This grade includes “Loss” loans in accordance with regulatory guidelines for which total loss is expected and when identified are charged off. Consumer, Home Equity, and One-to-Four-Family Real Estate Loans Homogeneous loans are risk rated based upon the Federal Financial Institutions Examination Council’s Uniform Retail Credit Classification and Account Management Policy. Loans classified under this policy at the Company are consumer loans which include indirect home improvement, solar, marine, other consumer, and one-to-four-family first and second liens. Under the Uniform Retail Credit Classification Policy, loans that are current or less than 90 days past due are graded “Pass” and risk rated “4” or “5” internally. Loans that are past due more than 90 days are classified “Substandard” and risk rated “8” internally until the loan has demonstrated consistent performance, typically six months of contractual payments. Closed-end loans that are 120 days past due and open-end loans that are 180 days past due are charged off based on the value of the collateral less cost to sell. Commercial real estate, construction and development, multi-family and commercial business loans are evaluated individually for their risk classification and may be classified as “Substandard” even if current on their loan payment obligations. The following tables summarize risk rated loan balances by category at the dates indicated: March 31, 2020 Special Pass Watch Mention Substandard Doubtful Loss REAL ESTATE LOANS (1 - 5) (6) (7) (8) (9) (10) Total Commercial $ 168,015 $ 46,802 $ 3,675 $ 2,017 $ — $ — $ 220,509 Construction and development 165,848 2,810 — — — — 168,658 Home equity 37,283 — — 220 — — 37,503 One-to-four-family 304,046 165 — 1,225 — — 305,436 Multi-family 130,570 — — — — — 130,570 Total real estate loans 805,762 49,777 3,675 3,462 — — 862,676 CONSUMER LOANS Indirect home improvement 261,033 — — 533 — — 261,566 Marine 69,349 — — 124 — — 69,473 Other consumer 4,049 — — 7 — — 4,056 Total consumer loans 334,431 — — 664 — — 335,095 COMMERCIAL BUSINESS LOANS Commercial and industrial 105,396 32,119 8,058 3,513 — — 149,086 Warehouse lending 61,202 3,815 — — — — 65,017 Total commercial business loans 166,598 35,934 8,058 3,513 — — 214,103 Total loans receivable, gross $ 1,306,791 $ 85,711 $ 11,733 $ 7,639 $ — $ — $ 1,411,874 December 31, 2019 Special Pass Watch Mention Substandard Doubtful Loss REAL ESTATE LOANS (1 - 5) (6) (7) (8) (9) (10) Total Commercial $ 203,703 $ 2,274 $ 3,686 $ 1,086 $ — $ — $ 210,749 Construction and development 177,109 2,545 — — — — 179,654 Home equity 37,942 — 35 190 — — 38,167 One-to-four-family 259,580 635 60 1,264 — — 261,539 Multi-family 127,792 6,139 — — — — 133,931 Total real estate loans 806,126 11,593 3,781 2,540 — — 824,040 CONSUMER LOANS Indirect home improvement 254,223 — — 468 — — 254,691 Marine 67,179 — — — — — 67,179 Other consumer 4,315 — — 25 — — 4,340 Total consumer loans 325,717 — — 493 — — 326,210 COMMERCIAL BUSINESS LOANS Commercial and industrial 125,025 10,435 1,442 3,629 — — 140,531 Warehouse lending 61,112 — — — — — 61,112 Total commercial business loans 186,137 10,435 1,442 3,629 — — 201,643 Total loans receivable, gross $ 1,317,980 $ 22,028 $ 5,223 $ 6,662 $ — $ — $ 1,351,893

Servicing Rights

Servicing Rights	3 Months Ended
	Mar. 31, 2020
Fair Value, Off-balance Sheet Risk [Abstract]
Servicing Rights	NOTE 4 - SERVICING RIGHTS Loans serviced for others are not included on the Consolidated Balance Sheets. The unpaid principal balances of permanent loans serviced for others were $1.49 billion and $1.46 billion at March 31, 2020 and December 31, 2019, respectively. The following tables summarize servicing rights activity for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 2019 Beginning balance $ 11,560 $ 10,429 Additions 1,185 844 Servicing rights amortized (1,605) (639) Impairment of servicing rights (514) (23) Ending balance $ 10,626 $ 10,611 The fair market value of the servicing rights’ assets was $10.9 million and $13.3 million at March 31, 2020 and December 31, 2019, respectively. Fair value adjustments to servicing rights are mainly due to market-based assumptions associated with discounted cash flows, loan prepayment speeds, and changes in interest rates. A significant change in prepayments of the loans in the servicing portfolio could result in significant changes in the valuation adjustments, thus creating potential volatility in the carrying amount of servicing rights. The following provides valuation assumptions used in determining the fair value of mortgage servicing rights (“MSR”) at the dates indicated: At March 31, At December 31, Key assumptions: 2020 2019 Weighted average discount rate 9.1 % 9.7 % Conditional prepayment rate (“CPR”) 23.3 % 17.1 % Weighted average life in years 3.9 5.1 Key economic assumptions of the current fair value for single family MSR are presented in the table below. Also presented is the sensitivity to market rate changes for the par rate coupon for a conventional one-to-four-family FNMA, FHLMC, GNMA, or FHLB serviced home loan. The table below references a 50 basis point and 100 basis point adverse rate change and the impact on prepayment speeds and discount rates at March 31, 2020 and December 31, 2019: March 31, 2020 December 31, 2019 Aggregate portfolio principal balance $ 1,490,874 $ 1,463,732 Weighted average rate of note 4.2 % % At March 31, 2020 Base 0.5% Adverse Rate Change 1.0% Adverse Rate Change Conditional prepayment rate 23.3 % 31.9 % 36.4 % Fair value MSR $ 10,855 $ 8,638 $ 7,796 Percentage of MSR 0.7 % 0.6 % 0.5 % Discount rate 9.1 % 9.6 % 10.1 % Fair value MSR $ 10,855 $ 10,706 $ 10,561 Percentage of MSR 0.7 % 0.7 % 0.7 % At December 31, 2019 Base 0.5% Adverse Rate Change 1.0% Adverse Rate Change Conditional prepayment rate 17.1 % 24.6 % 32.5 % Fair value MSR $ 13,255 $ 10,582 $ 8,674 Percentage of MSR 0.9 % 0.7 % 0.6 % Discount rate 9.7 % 10.2 % 10.7 % Fair value MSR $ 13,255 $ 13,037 $ 12,826 Percentage of MSR 0.9 % 0.9 % 0.9 % These sensitivities are hypothetical and should be used with caution as the tables above demonstrate the Company’s methodology for estimating the fair value of the MSR which 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 the assumption to the change in fair value may not be linear. Also, in these tables, the effects of a variation in a particular assumption on the fair value of the MSR 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 at a particular point in time. Those assumptions may not be appropriate if they are applied to a different point in time. The Company recorded $977,000 and $802,000 of gross contractually specified servicing fees, late fees, and other ancillary fees resulting from servicing of loans for the three months ended March 31, 2020 and 2019, respectively. The income, net of amortization, or the reduction in income, if MSR amortization is greater than servicing fees, is reported in noninterest income on the Consolidated Statements of Income.

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	NOTE 5 - DERIVATIVES The Company regularly enters into commitments to originate and sell loans held for sale. The Company has established a hedging strategy to protect itself against the risk of loss associated with interest rate movements on loan commitments. The Company enters into contracts to sell forward To-Be-Announced (“TBA”) mortgage-backed securities. These commitments and contracts are considered derivatives but have not been designated as hedging instruments for reporting purposes under U.S. GAAP. Rather, they are accounted for as free-standing derivatives, or economic hedges, with changes in the fair value of the derivatives reported in noninterest income or noninterest expense. The Company recognizes all derivative instruments as either other assets or other liabilities on the Consolidated Balance Sheets and measures those instruments at fair value. Derivative instruments not related to mortgage banking activities primarily relate to interest rate swap agreements. The Company's objectives in using certain interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The Company has entered into interest rate swaps to reduce the exposure to variability in interest-related cash outflows attributable to changes in forecasted LIBOR-based FHLB borrowings and brokered deposits. These derivative instruments are designated as cash flow hedges. The hedged item is the LIBOR portion of the series of future adjustable rate borrowings and deposits over the term of the interest rate swap. Accordingly, changes to the amount of interest payment cash flows for the hedged transactions attributable to a change in credit risk are excluded from management’s assessment of hedge effectiveness. The Company tests for hedging effectiveness on a quarterly basis. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The Company has not recorded any hedge ineffectiveness since inception. The Company has master netting agreements with derivative dealers with which it does business, but reflects gross assets and liabilities as other assets and other liabilities, respectively, on the Consolidated Balance Sheets. The net unrealized loss on cash flow hedges recorded in accumulated other comprehensive income was $825,000 and $0, net of tax, at March 31, 2020 and December 31, 2019, respectively. The Company reclassified expense of $1,000 and $0 from accumulated other comprehensive income to interest expense related to these cash flow hedges for the three months ended March 31, 2020 and March 31, 2019, respectively. The Company expects that approximately $188,000 will be reclassified from accumulated other comprehensive income as an increase to interest expense over the next twelve months related to these cash flow hedges. The following tables summarize the Company’s derivative instruments at the dates indicated: March 31, 2020 Fair Value Cash flow hedges: Notional Asset Liability Interest rate swaps $ 60,000 $ — $ 1,051 Non-hedging derivatives: Fallout adjusted interest rate lock commitments with customers 207,564 4,291 — Mandatory and best effort forward commitments with investors 60,368 — 181 Forward TBA mortgage-backed securities 248,000 — 3,723 December 31, 2019 Fair Value Non-hedging derivatives: Notional Asset Liability Fallout adjusted interest rate lock commitments with customers $ 33,914 $ 557 $ — Mandatory and best effort forward commitments with investors 43,752 — 195 Forward TBA mortgage-backed securities 46,000 — 8 At March 31, 2020 and December 31, 2019, the Company had $248.0 million and $46.0 million of TBA trades with counterparties that required margin collateral of $5.3 million and $1.2 million , respectively . At March 31, 2020, and December 31, 2019, interest rate swaps designated as cash flow hedges required margin collateral of $910,000 and $0.0, respectively. This restricted cash collateral is included in interest-bearing deposits at other financial institutions on the Consolidated Balance Sheets. Changes in the fair value of the non-hedging derivatives recognized in other noninterest income on the Consolidated Statements of Income and included in gain on sale of loans resulted in net gains of $1.7 million and $299,000 for the three months ended March 31, 2020 and 2019, respectively.

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	NOTE 6 - LEASES The Company has operating leases for retail bank and home lending branches, and certain equipment. The Company’s leases have remaining lease terms of one month to seven years and six months, some of which include options to extend the leases for up to five years. The components of lease cost (included in occupancy expense on the Consolidated Statements of Income) are as follows for the three months ended March 31, 2020 and 2019: Three Months Ended Three Months Ended Lease cost: March 31, 2020 March 31, 2019 Operating lease cost $ 343 $ 308 Short-term lease cost 8 46 Total lease cost $ 351 $ 354 The following table provides supplemental information related to operating leases at or for the three months ended March 31, 2020 and 2019: Cash paid for amounts included in the measurement At or For the Three Months Ended At or For the Three Months Ended of lease liabilities: March 31, 2020 March 31, 2019 Operating cash flows from operating leases $ 336 $ 334 Weighted average remaining lease term- operating leases 5.2 years 5.8 years Weighted average discount rate- operating leases 2.97 % 3.08 % The Company’s leases typically do not contain a discount rate implicit in the lease contract. As an alternative, the discount rate used in determining the lease liability for each individual lease was the FHLB of Des Moines’ fixed advance rate. Maturities of operating lease liabilities at March 31, 2020 for future periods are as follows: Remainder of 2020 $ 944 2021 1,169 2022 1,065 2023 674 2024 614 Thereafter 884 Total lease payments 5,350 Less imputed interest (452) Total $ 4,898 The Company has secured one new lease commencing between April 1, 2020 and June 30, 2020. The initial lease term is 60 months and includes one option to extend for five years. This lease was not included in the ROU assets or operating lease liabilities at March 31, 2020.

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Other Real Estate Owned	NOTE 7 - OTHER REAL ESTATE OWNED (“OREO”) The following table presents the activity related to OREO at or for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 2019 Beginning balance $ 168 $ 689 Additions — 77 Gross proceeds from sale of OREO (76) (684) (Loss) gain on sale of OREO (2) 85 Ending balance $ 90 $ 167 There was one OREO property in the amount of $90,000 at March 31, 2020, and two OREO properties totaling $167,000 at March 31, 2019. There were no holding costs for the three months ended March 31, 2020, compared to $4,000 for the three months ended March 31, 2019. There were $1.2 million in mortgage loans collateralized by residential real estate property in the process of foreclosure at March 31, 2020.

Deposits

Deposits	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Deposits	NOTE 8 - DEPOSITS Deposits are summarized as follows at March 31, 2020 and December 31, 2019: March 31, December 31, 2020 2019 Noninterest-bearing checking $ 267,966 $ 260,131 Interest-bearing checking 208,952 177,972 Savings 123,052 118,845 Money market 303,405 270,489 Certificates of deposit less than $100,000 263,787 277,988 Certificates of deposit of $100,000 through $250,000 176,322 181,402 Certificates of deposit of $250,000 and over 85,185 92,110 Escrow accounts related to mortgages serviced 17,600 13,471 Total $ 1,446,269 $ 1,392,408 Federal Reserve regulations require that the Bank maintain reserves in the form of cash on hand when there are deposit balances with the Federal Reserve Bank based on a percentage of deposits. At March 31, 2020 and December 31, 2019, the Bank had no reserve requirement based on its reserve calculation. Scheduled maturities of time deposits at March 31, 2020 for future periods ending are as follows: At March 31, 2020 Maturing in 2020 $ 273,650 Maturing in 2021 152,427 Maturing in 2022 63,458 Maturing in 2023 15,111 Maturing in 2024 17,505 Thereafter 3,143 Total $ 525,294 Interest expense by deposit category for the three months ended March 31, 2020 and 2019 is as follows: Three Months Ended March 31, 2020 2019 Interest-bearing checking $ 136 $ 196 Savings and money market 826 763 Certificates of deposit 2,845 2,751 Total $ 3,807 $ 3,710

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 9 - COMMITMENTS AND CONTINGENCIES Commitments - The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized on the Consolidated Balance Sheets. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The following table provides a summary of the Company’s commitments at March 31, 2020 and December 31, 2019: COMMITMENTS TO EXTEND CREDIT March 31, December 31, REAL ESTATE LOANS 2020 2019 Commercial $ 1,332 $ 247 Construction and development 106,862 95,031 One-to-four-family (includes locks for salable loans) 218,244 39,697 Home equity 46,558 47,880 Multi-family 630 622 Total real estate loans 373,626 183,477 CONSUMER LOANS 22,331 22,176 COMMERCIAL BUSINESS LOANS Commercial and industrial 82,202 72,731 Warehouse lending 26,983 33,888 Total commercial business loans 109,185 106,619 Total commitments to extend credit $ 505,142 $ 312,272 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Since many of the commitments are expected to expire without being drawn upon, the amount of the total commitments do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon an extension of credit, is based on management’s credit evaluation of the party. Collateral held varies, but may include accounts receivable, inventory, property and equipment, residential real estate, and income-producing commercial properties. Unfunded commitments under commercial lines of credit, revolving credit lines, and overdraft protection agreements are commitments for possible future extensions of credit to existing customers. These lines of credit are uncollateralized and usually do not contain a specified maturity date and ultimately may not be drawn upon to the total extent to which the Company is committed. The Company has established reserves for estimated losses from unfunded commitments of $312,000 at March 31, 2020 and $293,000 at December 31, 2019. One-to-four-family commitments included in the table above are accounted for as fair value derivatives and do not carry an associated holdback. The Company also sells one-to-four-family loans to the FHLB of Des Moines that require a limited level of recourse if the loans default and exceed a certain loss exposure. Specific to that recourse, the FHLB of Des Moines established a first loss account (“FLA”) related to the loans and required a credit enhancement (“CE”) obligation by the Bank to be utilized after the FLA is used. Based on loans sold through March 31, 2020, the total loans sold to the FHLB were $60.7 million with the FLA totaling $938,000 and the CE obligation at $811,000 or 1.3% of the loans outstanding. Management has established a holdback of 10% of the outstanding CE, or $272,000, which is a part of the off-balance sheet holdback for loans sold. At March 31, 2020, there were $482,000 of loans sold to the FHLB of Des Moines greater than 30 days past their contractual payment due date, compared to none at December 31, 2019. Contingent liabilities for loans held for sale - In the ordinary course of business, loans are sold with limited recourse against the Company and may have to subsequently be repurchased due to defects that occurred during the origination of the loan. The defects are categorized as documentation errors, underwriting errors, early payoff, early payment defaults, breach of representation or warranty, servicing errors, and/or fraud. When a loan sold to an investor without recourse fails to perform according to its contractual terms, the investor will typically review the loan file to determine whether defects in the origination process occurred. If a defect is identified, the Company may be required to either repurchase the loan or indemnify the investor for losses sustained. If there are no such defects, the Company has no commitment to repurchase the loan. The Company has recorded a holdback reserve of $1.3 million to cover loss exposure related to these guarantees for one-to-four-family loans sold into the secondary market at March 31, 2020, and $1.2 million at December 31, 2019, which is included in other liabilities on the Consolidated Balance Sheets. The Company has entered into a severance agreement with its Chief Executive Officer (“CEO”). The severance agreement, subject to certain requirements, generally includes a lump sum payment to the CEO equal to 24 months of base compensation in the event his employment is involuntarily terminated, other than for cause or the executive terminates his employment with good reason, as defined in the severance agreement. The Company has entered into change of control agreements with its Chief Financial Officer/Chief Operating Officer, Chief Lending Officer, Chief Credit Officer, Chief Risk Officer, Chief Human Resources Officer, Senior Vice President Compliance Officer, Executive Vice President of Retail Banking and Marketing, and the Executive Vice President of Home Lending. The change of control agreements, subject to certain requirements, generally remain in effect until canceled by either party upon at least 24 months prior written notice. Under the change of control agreements, the executive generally will be entitled to a change of control payment from the Company if the executive is involuntarily terminated within six months preceding or 12 months after a change in control (as defined in the change of control agreements). In such an event, the executives would each be entitled to receive a cash payment in an amount equal to 12 months of their then current salary, subject to certain requirements in the change of control agreements. As a result of the nature of our activities, the Company is subject to various pending and threatened legal actions, which arise in the ordinary course of business. From time to time, subordination liens may create litigation which requires us to defend our lien rights. In the opinion of management, liabilities arising from these claims, if any, will not have a material effect on our financial position. The Company had no material pending legal actions at March 31, 2020.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 10 - FAIR VALUE MEASUREMENTS The Company determines fair value based on the requirements established in Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements, which provides a framework for measuring fair value in accordance with U.S. GAAP and requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. ASC 820 defines fair value as the exit price, or the price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date under current market conditions. ASU 2016-01 , Financial Instruments - Overall (Subtopic 825‑10), Recognition and Measurement of Financial Assets and Financial Liabilities, requires us to use the exit price notion when measuring the fair value of instruments for disclosure purposes. The following definitions describe the levels of inputs that may be used to measure fair value: Level 1 - Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 - Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3 - Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The following methods were used to estimate the fair value of certain assets and liabilities on a recurring and nonrecurring basis: Securities Available-for-Sale - The fair value of securities available-for-sale are recorded on a recurring basis. The fair value of investments and mortgage-backed securities are provided by a third-party pricing service. These valuations are based on market data using pricing models that vary by asset class and incorporate available current trade, bid, and other market information, and for structured securities, cash flow, and loan performance data. The pricing processes utilize benchmark curves, benchmarking of similar securities, sector groupings, and matrix pricing. Option adjusted spread models are also used to assess the impact of changes in interest rates and to develop prepayment scenarios (Level 2). Certain other corporate securities and municipal bonds are generally measured at fair value based on discounted cash flow models (Level 3). Transfers between the fair value hierarchy are determined through the third-party service provider which, from time to time will transfer between levels based on market conditions per the related security. All models and processes used take into account market convention. Mortgage Loans Held for Sale - The fair value of loans held for sale reflects the value of commitments with investors and/or the relative price as delivered into a TBA mortgage-backed security (Level 2). Derivative Instruments - Fair values for derivative assets and liabilities are measured on a recurring basis. The primary use of derivative instruments is related to the mortgage banking activities of the Company. The fair value of the interest rate lock commitments and forward sales commitments are estimated using quoted or published market prices for similar instruments, adjusted for factors such as pull-though rate assumptions based on historical information, where appropriate. TBA mortgage-backed securities are fair valued on similar contracts in active markets (Level 2), while locks and forwards with customers and investors are fair valued using similar contracts in the market and changes in the market interest rates (Level 2 and 3). Derivative instruments not related to mortgage banking activities include interest rate swap agreements. The fair values of interest rate swap agreements are based on valuation models using observable market data as of the measurement date (Level 2). The Company’s derivatives are traded in an over-the-counter market where quoted market prices are not always available. Therefore, the fair values of derivatives are determined using quantitative models that utilize multiple market inputs. The inputs will vary based on the type of derivative, but could include interest rates, prices and indices to generate continuous yield or pricing curves, prepayment rates, and volatility factors to value the position. The majority of market inputs are actively quoted and can be validated through external sources, including market transactions and third-party pricing services. The fair values of all interest rate swaps are determined from third-party pricing services without adjustment. Impaired Loans - Fair value adjustments to impaired collateral dependent loans are recorded to reflect partial write-downs based on the current appraised value of the collateral or internally developed models, which contain management’s assumptions. Management will utilize discounted cashflow impairment for troubled debt restructures when the change in terms results in a discount to the overall cashflows to be received (Level 3). Other Real Estate Owned - Fair value adjustments to OREO are recorded at the lower of carrying amount of the loan or fair value of the collateral less selling costs. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell (Level 3). Servicing Rights - The fair value of mortgage servicing rights are estimated using net present value of expected cash flows using a third party model that incorporates assumptions used in the industry to value such rights, adjusted for factors such as weighted average prepayments speeds based on historical information where appropriate (Level 3). The following tables present securities available-for-sale, mortgage loans held for sale, and derivative assets and liabilities measured at fair value on a recurring basis at the dates indicated: Financial Assets At March 31, 2020 Securities available-for-sale: Level 1 Level 2 Level 3 Total U.S. agency securities $ — $ 7,127 $ — $ 7,127 Corporate securities — 18,815 1,036 19,851 Municipal bonds — 31,271 135 31,406 Mortgage-backed securities — 76,733 — 76,733 U.S. Small Business Administration securities — 21,349 — 21,349 Mortgage loans held for sale, at fair value — 115,632 — 115,632 Derivatives: Interest rate lock commitments with customers — — 4,291 4,291 Total assets measured at fair value $ — $ 270,927 $ 5,462 $ 276,389 Financial Liabilities Derivatives: Individual forward sale commitments with investors $ — $ (3,723) $ (181) $ (3,904) Interest rate swaps — (1,051) — (1,051) Total liabilities measured at fair value $ — $ (3,723) $ (181) $ (3,904) Financial Assets At December 31, 2019 Securities available-for-sale: Level 1 Level 2 Level 3 Total U.S. agency securities $ — $ 9,066 $ — $ 9,066 Corporate securities — 9,546 1,024 10,570 Municipal bonds — 20,982 138 21,120 Mortgage-backed securities — 62,850 — 62,850 U.S. Small Business Administration securities — 22,451 — 22,451 Mortgage loans held for sale, at fair value — 69,699 — 69,699 Derivatives: Interest rate lock commitments with customers — — 557 557 Total assets measured at fair value $ — $ 194,594 $ 1,719 $ 196,313 Financial Liabilities Derivatives: Individual forward sale commitments with investors $ — $ (8) $ (195) $ (203) Total liabilities measured at fair value $ — $ (8) $ (195) $ (203) The following tables present impaired loans, OREO, and servicing rights measured at fair value on a nonrecurring basis for which a nonrecurring change in fair value has been recorded during the reporting periods indicated. The amounts disclosed below represent the fair values at the time the nonrecurring fair value measurements were evaluated. March 31, 2020 Level 1 Level 2 Level 3 Total Impaired loans $ — $ — $ 3,192 $ 3,192 OREO — — 90 90 Servicing rights — — 10,855 10,855 December 31, 2019 Level 1 Level 2 Level 3 Total Impaired loans $ — $ — $ 3,128 $ 3,128 OREO — — 168 168 Servicing rights — — 13,255 13,255 Quantitative Information about Level 3 Fair Value Measurements - Shown in the table below is the fair value of financial instruments measured under a Level 3 unobservable input on a recurring and nonrecurring basis at March 31, 2020 and December 31, 2019: Level 3 Significant Weighted Average Fair Value Valuation Unobservable March 31, December 31, Instruments Techniques Inputs Range 2020 2019 RECURRING Interest rate lock commitments with customers Quoted market prices Pull-through expectations 80% - 99% 91.5 % 94.5 % Individual forward sale commitments with investors Quoted market prices Pull-through expectations 80% - 99% 91.5 % 94.5 % Corporate securities Discounted cash flows Discount rate 1.6% 1.6 % 2.1 % Municipal bonds Discounted cash flows Discount rate 2.5% - 2.6% 2.6 % 3.4 % NONRECURRING Impaired loans Fair value of underlying collateral Discount applied to the obtained appraisal 10.0% 10.0 % 10.0 % OREO Fair value of collateral Discount applied to the obtained appraisal 10.0% 10.0 % 10.0 % Servicing rights Industry sources Pre-payment speeds 0% - 50% 23.3 % 17.1 % An increase in the pull-through rate utilized in the fair value measurement of the interest rate lock commitments with customers and forward sale commitments with investors will result in positive fair value adjustments (and an increase in the fair value measurement). Conversely, a decrease in the pull-through rate will result in a negative fair value adjustment (and a decrease in the fair value measurement). The following tables provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three months ended March 31, 2020 and 2019: Purchases Net change Net change Beginning and Sales and Transfers Ending in fair value in fair value 2020 Balance Issuances Settlements In Balance for gains/(losses) (1) for gains (2) Interest rate lock commitments with customers $ 557 $ 7,411 $ (3,677) $ — $ 4,291 $ 3,734 $ — Individual forward sale commitments with investors (195) (531) 545 — (181) 14 — Securities available-for-sale, at fair value 1,162 12 (3) — 1,171 — 12 2019 Interest rate lock commitments with customers $ 503 $ 1,931 $ (1,748) $ — $ 686 $ 183 $ — Individual forward sale commitments with investors (34) (162) 100 — (96) (62) — __________________________ (1) Relating to items held at end of period included in income. (2) Relating to items held at end of period included in other comprehensive income. Gains (losses) on interest rate lock commitments carried at fair value are recorded in other noninterest income. Gains (losses) on forward sale commitments with investors carried at fair value are recorded within other noninterest income or noninterest expense. The following table provides estimated fair values of the Company’s financial instruments at March 31, 2020 and December 31, 2019, whether or not recognized at fair value on the Consolidated Balance Sheets: March 31, December 31, 2020 2019 Financial Assets Carrying Fair Carrying Fair Level 1 inputs: Amount Value Amount Value Cash and cash equivalents $ 48,921 $ 48,921 $ $ Certificates of deposit at other financial institutions 17,926 17,926 Level 2 inputs: Securities available-for-sale, at fair value 155,295 155,295 Loans held for sale, at fair value 115,632 115,632 FHLB stock, at cost 10,921 10,921 Accrued interest receivable 6,326 6,326 Level 3 inputs: Securities available-for-sale, at fair value 1,171 1,171 1,162 1,162 Loans receivable, gross 1,411,874 1,413,954 Servicing rights, held at lower of cost or fair value 10,626 10,855 Fair value interest rate locks with customers 4,291 4,291 Financial Liabilities Level 2 inputs: Deposits 1,446,269 1,452,760 Borrowings 159,114 163,294 Subordinated note 9,890 10,599 Accrued interest payable 293 293 Paired off commitments with investors 112 112 Interest rate swaps 1,051 1,051 — — Individual forward sale commitments with investors 3,723 3,723 Level 3 inputs: Individual forward sale commitments with investors 181 181

Employee Benefits

Employee Benefits	3 Months Ended
	Mar. 31, 2020
Compensation and Retirement Disclosure [Abstract]
Employee Benefit	NOTE 11 - EMPLOYEE BENEFITS Employee Stock Ownership Plan On January 1, 2012, the Company established an ESOP for eligible employees of the Company and the Bank. Employees of the Company and the Bank are eligible to participate in the ESOP if they have been credited with at least 1,000 hours of service during the employees’ first 12‑month period and based on the employee’s anniversary date will be vested in the ESOP. The employee will be 100% vested in the ESOP after two years of working at least 1,000 hours in each of those two years. The ESOP borrowed $2.6 million from FS Bancorp, Inc. and used those funds to acquire 259,210 shares of FS Bancorp, Inc. common stock in the open market at an average price of $10.17 per share during the second half of 2012. It is anticipated that the Bank will make contributions to the ESOP in amounts necessary to amortize the ESOP loan payable to FS Bancorp, Inc. over a period of 10 years, bearing interest at 2.30%. Intercompany expenses associated with the ESOP are eliminated in consolidation. Shares purchased by the ESOP with the loan proceeds are held in a suspense account and allocated to ESOP participants on a pro rata basis as principal and interest payments are made by the ESOP to FS Bancorp, Inc. The loan is secured by shares purchased with the loan proceeds and will be repaid by the ESOP with funds from the Bank’s discretionary contributions to the ESOP and earnings on the ESOP assets. Payments of principal and interest are due annually on December 31, the Company’s fiscal year end. On December 31, 2019, the ESOP paid the eighth annual installment of principal in the amount of $275,000, plus accrued interest of $20,000 pursuant to the ESOP loan agreement. As shares are committed to be released from collateral, the Company reports compensation expense equal to the average daily market prices of the shares at March 31, 2020 for the prior 90 days. These shares become outstanding for earnings per share computations. The compensation expense is accrued monthly throughout the year. Dividends on allocated ESOP shares are recorded as a reduction of retained earnings; dividends on unallocated ESOP shares are recorded as a reduction of debt and accrued interest. Compensation expense related to the ESOP for the three months ended March 31, 2020 and 2019 was $325,000 and $321,000, respectively. Shares held by the ESOP at March 31, 2020 and 2019 were as follows (shown as actual): Balances Balances at March 31, 2020 at March 31, 2019 Allocated shares 189,511 176,809 Committed to be released shares 6,480 6,480 Unallocated shares 45,362 71,283 Total ESOP shares 241,353 254,572 Fair value of unallocated shares (in thousands) $ 2,276 $ 3,530

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 12 - EARNINGS PER SHARE The Company computes earnings per share using the two-class method, which is an earnings allocation method for computing earnings per share that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Basic earnings per share are computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Unvested share-based awards containing non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per share pursuant to the two-class method. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. For earnings per share calculations, the ESOP shares committed to be released are included as outstanding shares for both basic and diluted earnings per share. The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, Numerator (in thousands): 2020 2019 Net income $ 5,167 $ 5,192 Dividends and undistributed earnings allocated to participating securities (56) — Net income available to common shareholders $ 5,111 $ 5,192 Denominator (shown as actual): Basic weighted average common shares outstanding 4,391,499 4,355,307 Dilutive shares 87,419 138,119 Diluted weighted average common shares outstanding 4,478,918 4,493,426 Basic earnings per share $ 1.16 $ 1.19 Diluted earnings per share $ 1.14 $ 1.15 Potentially dilutive weighted average share options that were not included in the computation of diluted earnings per share because to do so would be anti-dilutive 41,627 44,488

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	NOTE 13 - STOCK-BASED COMPENSATION Stock Options and Restricted Stock On May 17, 2018, the shareholders of FS Bancorp, Inc. approved the 2018 Equity Incentive Plan (the “2018 Plan”) that authorizes 650,000 shares of the Company’s common stock to be awarded. The 2018 Plan pr ovides for the grant of incentive stock options, non-qualified stock options, and up to 163,000 restricted stock awards (“RSAs”) to directors, emeritus directors, officers, employees or advisory directors of the Company. On August 15, 2019, the Company awarded grants of 20,215 RSAs and 50,655 stock options with an exercise price equal to the market price of FS Bancorp’s common stock on the grant date of $48.74 per share. In September 2013, the shareholders of FS Bancorp, Inc. approved the FS Bancorp, Inc. 2013 Equity Incentive Plan (the “2013 Plan”). The Plan provided for the grant of stock options and RSAs. The 2013 Plan authorized the grant of stock options totaling 324,013 shares of common stock to Company directors and employees of which 322,000 stock options were granted with an exercise price equal to the market price of FS Bancorp’s common stock on the grant date of May 8, 2014, of $16.89 per share. The 2013 Plan authorized the grant of RSAs totaling 129,605 shares to Company directors, advisory directors, emeritus directors, officers, and employees, all of which have been granted. All options and RSAs previously granted have vested as of March 31, 2020. Total share-based compensation expense for the 2018 Plan was $224,000 for the three months ended March 31, 2020, and for the 2013 and 2018 Plans was $262,000 for the three months ended March 31, 2019. Stock Options Both plans consist of stock option awards that may be granted as incentive stock options or non-qualified stock options. Stock option awards generally vest at one year for independent directors or over five years for employees and officers with 20% vesting on the anniversary date of each grant date as long as the award recipient remains in service to the Company. The options are exercisable after vesting for up to the remaining term of the original grant. The maximum term of the options granted is 10 years. Any unexercised stock options will expire 10 years after the grant date or sooner in the event of the award recipient’s termination of service with the Company or the Bank. At March 31, 2020, there were 336,345 and 6,013 stock option awards available to be granted under the 2018 Plan and the 2013 Plan, respectively. The fair value of each stock option award is estimated on the grant date using a Black-Scholes Option pricing model that uses the following assumptions. The dividend yield is based on the current quarterly dividend in effect at the time of the grant. Historical employment data is used to estimate the forfeiture rate. The Company elected to use Staff Accounting Bulletin 107, simplified expected term calculation for the “Share-Based Payments” method permitted by the SEC to calculate the expected term. This method uses the vesting term of an option along with the contractual term, setting the expected life at 5.5 years for one-year vesting and 6.5 years for five-year vesting. The following table presents a summary of the Company’s stock option awards during the three months ended March 31, 2020 (shown as actual): Weighted-Average Weighted- Remaining Average Contractual Term In Aggregate Shares Exercise Price Years Intrinsic Value Outstanding at January 1, 2020 287,990 $ 36.98 6.77 $ 7,722,369 Granted — — — — Less exercised 9,398 $ 16.89 — $ 350,414 Forfeited or expired — — — — Outstanding at March 31, 2020 278,592 $ 37.65 6.57 $ 2,444,876 Expected to vest, assuming a 0.31% annual forfeiture rate (1) 277,770 $ 37.60 6.57 $ 2,444,876 Exercisable at March 31, 2020 147,937 $ 22.53 4.63 $ 2,444,876 __________________________ (1) Forfeiture rate has been calculated and estimated to assume a forfeiture of 3.1% of the options forfeited over 10 years. At March 31, 2020, there was $1.3 million of total unrecognized compensation cost related to nonvested stock options granted under both plans. The cost is expected to be recognized over the remaining weighted-average vesting period of 3.7 years. Restricted Stock Awards The RSAs’ fair value is equal to the value of the stock based on the market price of FS Bancorp’s common stock on the grant date and compensation expense is recognized over the vesting period of the awards based on the fair value of the restricted stock. Shares for the 2018 Plan generally vest at one-year for independent directors or over a five-year period for employees and officers beginning on the grant date. Any unvested RSAs will expire after vesting or sooner in the event of the award recipient’s termination of service with the Company or the Bank. The following table presents a summary of the Company’s nonvested awards during the three months ended March 31, 2020 (shown as actual): Weighted-Average Grant-Date Fair Value Nonvested Shares Shares Per Share Nonvested at January 1, 2020 40,215 $ 53.64 Granted — $ — Less vested — $ — Forfeited or expired — — Nonvested at March 31, 2020 40,215 $ 53.64 At March 31, 2020, there was $1.8 million of total unrecognized compensation cost related to nonvested shares granted under the 2018 Plan as RSAs. The cost is expected to be recognized over the remaining weighted-average vesting period of 3.8 years.

Regulatory Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 2020
Regulatory Capital Requirements [Abstract]
Regulatory Capital	NOTE 14 - REGULATORY CAPITAL The Bank is subject to various regulatory capital requirements administered by the Federal Reserve and the FDIC. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines of the regulatory framework for prompt corrective action, the Bank must meet specific capital adequacy guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital classification is also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. The federal banking agencies jointly issued a final rule that provides for an optional, simplified measure of capital adequacy, the community bank leverage ratio framework, for qualifying community banking organizations, consistent with Section 201 of the Economic Growth, Regulatory Relief, and Consumer Protection Act. This final rule is applicable to all non-advanced approaches FDIC-supervised institutions with less than $10 billion in total consolidated assets. The community bank leverage ratio (“CBLR”) final rule was effective on January 1, 2020, and will allow qualifying community banking organizations to calculate a leverage ratio to measure capital adequacy. Banks opting into the CBLR framework will not be required to calculate or report risk-based capital. A qualifying community banking organization is defined as having less than $10 billion in total consolidated assets, a leverage ratio greater than 9%, off-balance sheet exposures of 25% or less of total consolidated assets, and trading assets and liabilities of 5% or less of total consolidated assets. The final rule adopts Tier 1 capital and the existing leverage ratio into the community bank leverage ratio framework. A bank electing the framework will not be subject to other capital and leverage requirements. A bank electing the framework that ceases to meet any qualifying criteria in a future period and that has a leverage ratio greater than 8% will be allowed a grace period of two reporting periods to satisfy the CBLR qualifying criteria or comply with the generally applicable capital requirements. A bank may opt out of the framework at any time, without restriction, by reverting to the generally applicable risk-based capital rule. In response to the COVID-19 pandemic, the CARES Act was signed into law on March 27, 2020. Among other things, the CARES Act directs federal banking agencies to adopt interim final rules to lower the threshold under the CBLR from 9% to 8% and to provide a reasonable grace period for a community bank that falls below the threshold to regain compliance, in each case until the earlier of the termination date of the national emergency or December 31, 2020. In April 2020, the federal banking agencies issued two interim final rules implementing this directive. One interim final rule provides that, as of the second quarter 2020, banking organizations with leverage ratios of 8% or greater (and that meet the other existing qualifying criteria) may elect to use the CBLR framework. It also establishes a two-quarter grace period for qualifying community banking organizations whose leverage ratios fall below the 8% CBLR requirement, so long as the banking organization maintains a leverage ratio of 7% or greater. The second interim final rule provides a transition from the temporary 8% CBLR requirement to a 9% CBLR requirement. It establishes a minimum CBLR of 8% for the second through fourth quarters of 2020, 8.5% for 2021, and 9% thereafter, and maintains a two-quarter grace period for qualifying community banking organizations whose leverage ratios fall no more than 100 basis points below the applicable CBLR requirement. The Bank qualified and elected the CBLR framework as of March 31, 2020. The Tier 1 leverage-based capital ratio calculated for the Bank at March 31, 2020 was 11.3%, compared to 11.6% at December 31, 2019. At March 31, 2020, the Bank had Tier 1 capital of $194.3 million and a minimum Tier 1 capital requirement of $138.0 million to be considered well capitalized under the CBLR framework. At December 31, 2019, The Bank had Tier 1 capital of $196.0 million and a minimum Tier 1 capital requirement of $84.8 million to be considered well capitalized for the Tier 1 leverage-based ratio under the Basel Committee on Companying Supervision’s capital guidelines for U.S. Banks (“Basel III”) requirements. At March 31, 2020 and December 31, 2019, the Bank was categorized as well capitalized under applicable regulatory requirements. There are no conditions or events since that notification that management believes have changed the Bank’s category. Management believes, at March 31, 2020, that the Bank met all capital adequacy requirements. FS Bancorp, Inc. is a bank holding company registered with the Federal Reserve. Bank holding companies are subject to capital adequacy requirements of the Federal Reserve under the Bank Holding Company Act of 1956, as amended, and the regulations of the Federal Reserve. Bank holding companies with less than $3.0 billion in assets are generally not subject to compliance with the Federal Reserve’s capital regulations, which are generally the same as the capital regulations applicable to the Bank. The Federal Reserve has a policy that a bank holding company is required to serve as a source of financial and managerial strength to the holding company’s subsidiary bank and expects the holding company’s subsidiary bank to be well capitalized under the prompt corrective action regulations. If FS Bancorp, Inc. was subject to regulatory guidelines for bank holding companies with $3.0 billion or more in assets at March 31, 2020, FS Bancorp, Inc. would have exceeded all regulatory capital requirements. The Tier 1 leverage-based capital ratio calculated for FS Bancorp, Inc. at March 31, 2020 was 11.1%, compared to 11.3% at December 31, 2019.

Business Segments

Business Segments	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Business Segments	NOTE 15 - 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. This process is dynamic and is based on management’s current view of the Company’s operations and is not necessarily comparable with similar information for other financial institutions. The Company defines its business segments by product type and customer segment which it has organized into two lines of business: commercial and consumer banking and home lending. The Company uses various management accounting methodologies to assign certain income statement items to the responsible operating segment, including:  a funds transfer pricing (“FTP”) system, which allocates interest income credits and funding charges between the segments, assigning to each segment a funding credit for its liabilities, such as deposits, and a charge to fund its assets;  a cost per loan serviced allocation based on the number of loans being serviced on the balance sheet and the number of loans serviced for third parties;  an allocation based upon the approximate square footage utilized by the home lending segment in Company owned locations;  an allocation of charges for services rendered to the segments by centralized functions, such as corporate overhead, which are generally based on the number of full time employees (“FTEs”) in each segment; and  an allocation of the Company’s consolidated income taxes which are based on the effective tax rate applied to the segment’s pretax income or loss. The FTP methodology is based on management’s estimated cost of originating funds including the cost of overhead for deposit generation. A description of the Company’s business segments and the products and services that they provide is as follows: Commercial and Consumer Banking Segment The commercial and consumer banking segment provides diversified financial products and services to its commercial and consumer customers through Bank branches, automated teller machines (“ATM”), online banking platforms, mobile banking apps, and telephone banking. These products and services include deposit products; residential, consumer, business and commercial real estate lending portfolios and cash management services. The Company originates consumer loans, commercial and multi-family real estate loans, construction loans for residential and multi-family construction, and commercial business loans. At March 31, 2020, the Company’s retail deposit branch network consisted of 21 branches in the Pacific Northwest. At March 31, 2020 and December 31, 2019, deposits totaled $1.45 billion and $1.39 billion, respectively. This segment is also responsible for the management of the investment portfolio and other assets of the Bank. Home Lending Segment The home lending segment originates one-to-four-family residential mortgage loans primarily for sale in the secondary markets as well as originating adjustable rate mortgage (“ARM”) loans held for investment. The majority of mortgage loans are sold to or securitized by FNMA, FHLMC, GNMA, or FHLB of Des Moines, while the Company retains the right to service these loans. Loans originated under the guidelines of the Federal Housing Administration or FHA, US Department of Veterans Affairs or VA, and United States Department of Agriculture or USDA are generally sold servicing released to a correspondent bank or mortgage company. The Company has the option to sell loans on a servicing-released or servicing-retained basis to securitizers and correspondent lenders. A small percentage of its loans are brokered to other lenders. On occasion, the Company may sell a portion of its MSR portfolio and may sell small pools of loans initially originated to be held in the loan portfolio. The Company manages the loan funding and the interest rate risk associated with the secondary market loan sales and the retained one-to-four-family mortgage servicing rights within this business segment. One-to-four-family loans originated for investment are allocated to the home lending segment with a corresponding provision expense and FTP for cost of funds. Segment Financial Results The tables below summarize the financial results for each segment based primarily on the number of FTEs and assets within each segment for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 Condensed income statement: Home Lending Commercial and Consumer Banking Total Net interest income (1) $ 1,181 $ 16,292 $ 17,473 Provision for loan losses (559) (3,127) (3,686) Noninterest income 5,158 3,733 8,891 Noninterest expense (4,162) (12,022) (16,184) Income before provision for income taxes 1,618 4,876 6,494 Provision for income taxes (331) (996) (1,327) Net income $ 1,287 $ 3,880 $ 5,167 Total average assets for period ended $ 327,441 $ 1,406,594 $ 1,734,035 FTEs 127 317 444 At or For the Three Months Ended March 31, 2019 Condensed income statement: Home Lending Commercial and Consumer Banking Total Net interest income (1) $ 1,071 $ 16,618 $ 17,689 Provision for loan losses (59) (691) (750) Noninterest income 2,419 2,136 4,555 Noninterest expense (3,304) (11,493) (14,797) Income before provision for income taxes 127 6,570 6,697 Provision for income taxes (29) (1,476) (1,505) Net income $ 98 $ 5,094 $ 5,192 Total average assets for period ended $ 239,287 $ 1,375,574 $ 1,614,861 FTEs 112 314 426 ____________________________ (1) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to the other segment. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of assigned liabilities to fund segment assets.

Goodwill And Other Intangible A

Goodwill And Other Intangible Assets	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	NOTE 16 - GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and certain other intangibles generally arise from business combinations accounted for under the acquisition method of accounting. Goodwill totaled $2.3 million at March 31, 2020 and December 31, 2019, and represents the excess of the total acquisition price paid over the fair value of the assets acquired, net of the fair values of liabilities assumed as a result of the purchase of four retail bank branches from Bank of America, National Association on January 22, 2016 (“Branch Purchase”). Goodwill is not amortized but is evaluated for impairment on an annual basis at December 31 of each year or whenever events or changes in circumstances indicate the carrying value may not be recoverable. The Company performed an impairment analysis at December 31, 2019, and determined that no impairment of goodwill existed. No events or circumstances since the December 31, 2019 annual impairment test were noted that would indicate it was more likely than not a goodwill impairment existed at March 31, 2020. As of March 31, 2020, the Company had positive equity, however, if adverse economic conditions as a result of the COVID-19 pandemic were to be deemed sustained rather than temporary, it may significantly affect the fair value of our goodwill. Accordingly, no assurances can be given that the Company will not record an impairment loss on goodwill in the future. Core deposit intangible (“CDI”) is evaluated for impairment whenever events or changes in circumstances indicate that its carrying amount may not be recoverable, with any changes in estimated useful life accounted for prospectively over the revised remaining life. As of March 31, 2020, management believes that there have been no events or changes in the circumstances that would indicate a potential impairment of CDI. The following table summarizes the changes in the Company’s other intangible assets comprised solely of CDI for the year ended December 31, 2019, and the three months ended March 31, 2020. Other Intangible Assets Accumulated Gross CDI Amortization Net CDI Balance, December 31, 2018 $ 7,490 $ (1,273) $ 6,217 Amortization — (760) (760) Balance, December 31, 2019 7,490 (2,033) 5,457 Amortization — (176) (176) Balance, March 31, 2020 $ 7,490 $ (2,209) $ 5,281 The CDI represents the fair value of the intangible core deposit base acquired in business combinations. The CDI will be amortized on a straight-line basis over 10 years for the CDI related to the Anchor Merger on November 15, 2018 (“Anchor Acquisition”) and on an accelerated basis over approximately nine years for the CDI related to the Branch Purchase. Total amortization expense was $176,000 for the three months ended March 31, 2020, and $190,000 for the same period in 2019. Amortization expense for CDI is expected to be as follows at March 31, 2020: Remainder of 2020 $ 530 2021 691 2022 691 2023 691 2024 621 Thereafter 2,057 Total $ 5,281

Revenue From Contracts With Cus

Revenue From Contracts With Customers	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customers	NOTE 17 - REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue Recognition In accordance with Topic 606, revenues are recognized when control of promised goods or services is transferred to customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of Topic 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of Topic 606, the Company assesses the goods or services that are promised within each contract and identifies those that contain performance obligations, and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. All of the Company’s revenue from contracts with customers in-scope of ASC 606 is recognized in noninterest income and included in our commercial and consumer banking segment. The following table presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2020 and 2019. (Dollars in thousands): At or For the Three Months Ended March 31, Noninterest income 2020 2019 In-scope of Topic 606: Debit card interchange fees $ 435 $ 423 Deposit service and account maintenance fees 266 271 Noninterest income (in-scope of Topic 606) 701 694 Noninterest income (out-of-scope of Topic 606) 8,190 3,861 Total noninterest income $ 8,891 $ 4,555 Deposit Fees The Bank earns fees from its deposit customers for account maintenance, transaction-based services, and overdraft charges. Account maintenance fees consist primarily of account fees and analyzed account fees charged on deposit accounts on a monthly basis. The performance obligation is satisfied and the fees are recognized on a monthly basis as the service period is completed. Transaction-based fees on deposit accounts are charged to deposit customers for specific services provided to the customer, such as wire fees, as well as charges against the account, such as fees for non-sufficient funds and overdrafts. The performance obligation is completed as the transaction occurs and the fees are recognized at the time each specific service is provided to the customer. Debit Interchange Income Debit and ATM interchange income represent fees earned when a debit card issued by the Bank is used. The Bank earns interchange fees from debit cardholder transactions through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the cardholders’ debit card

COVID-19 Pandemic

COVID-19 Pandemic	3 Months Ended
	Mar. 31, 2020
Covid 19 Pandemic
Covid-19 Pandemic	NOTE 18 - COVID-19 PANDEMIC In response to the current global situation surrounding the COVID-19 pandemic, the Company is offering a variety of relief options designed to support our customers and the communities we serve. The Company is following the Federal Housing Finance Agency guidelines for forbearance, foreclosure relief, and late payment reporting for the COVID-19 pandemic on all serviced loans and a modified format for portfolio loans. As of May 5, 2020, the amount of one-to-four-family loans that have entered into forbearance agreements with the borrowers is $59.1 million for serviced loans and $20.7 million for portfolio loans, and the amount of consumer loans that we have entered into a skip pay/interest deferral agreements with the borrower is $8.2 million. All loans modified due to COVID-19 will be separately monitored and any request for continuation of relief beyond the initial modification will be reassessed at that time to determine if a further modification should be granted and if a downgrade in risk rating is appropriate. The Company participated in the PPP and has secured 433 approvals and 414 fundings as of May 5, 2020 for borrowers in the communities we serve. The Company has funded over $72.0 million in PPP loans to date. We intend to utilize the FRB's Paycheck Protection Program Liquidity Facility (“PPPLF”), pursuant to which the Company will pledge its PPP loans as collateral to obtain FRB non-recourse loans. The PPPLF will take the PPP loans as collateral at face value. As of May 5, 2020 the Company has borrowed $63.3 million under the PPPLF, with additional unused borrowing capacity of $9.6 million. All of our branches are open via drive thru and by appointment; and to enhance health and safety measures, approximately 70% of our staff have been approved to work remotely, where feasible.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Financial Statement Presentation	Financial Statement Presentation - The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and in accordance with the instructions to Form 10‑Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). It is recommended that these unaudited interim consolidated financial statements be read in conjunction with the Company’s Annual Report on Form 10‑K with all of the audited information and footnotes required by U.S. GAAP for complete financial statements for the year ended December 31, 2019, as filed with the SEC on March 16, 2020. In the opinion of management, all normal adjustments and recurring accruals considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. The results for the three months ended March 31, 2020 are not necessarily indicative of the results that may be expected for the year ending December 31, 2020, or any other future period. The preparation of financial statements, in conformity with U.S. GAAP, requires management to make estimates and assumptions that affect amounts reported in the financial statements. Actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses, fair value of financial instruments, the valuation of servicing rights, deferred income taxes, and if needed, a deferred tax asset valuation allowance. Amounts presented in the consolidated financial statements and footnote tables are rounded and presented to the nearest thousands of dollars except per share amounts. If the amounts are above $1.0 million, they are rounded one decimal point, and if they are above $1.0 billion, they are rounded two decimal points.
Principles of Consolidation	Principles of Consolidation - The consolidated financial statements include the accounts of FS Bancorp, Inc. and its wholly owned subsidiary, 1st Security Bank of Washington. All material intercompany accounts have been eliminated in consolidation.
Segment Reporting	Segment Reporting - The Company operates in two business segments through the Bank: commercial and consumer banking and home lending. 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 regularly reviewed for the purpose of allocating resources and evaluating performance of the Company’s businesses. The results for these business segments are based on management’s accounting process, which assigns income statement items and assets to each responsible operating segment. This process is dynamic and is based on management’s view of the Company’s operations. See “Note 15 - Business Segments.”
Recent Events	Recent Events - On March 22, 2020, the federal banking agencies issued an “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus”. This guidance encourages financial institutions to work prudently with borrowers that may be unable to meet their contractual obligations because of the effects of the novel coronavirus of 2019 (“COVID-19”) pandemic. The guidance provides that short-term modifications (e.g. six months) made on a good faith basis to borrowers who were current as of the implementation date of a relief program are not Troubled Debt Restructurings (“TDRs”). The Coronavirus Aid, Relief, and Economic Security Act of 2020 signed into law on March 27, 2020 ("CARES Act") provided similar guidance around the modification of loans as a result of the COVID-19 pandemic, providing, among other criteria, that modifications made between March 1, 2020, and the earlier of December 31, 2020, or 60 days after the COVID-19 emergency is terminated, on a good faith basis to borrowers who were current as of December 31, 2019, are not TDRs. This includes modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment. Borrowers are considered current under the CARES Act if they are not more than 30 days past due on their contractual payments as of December 31, 2019. Through March 31, 2020, the Bank had applied the interagency statement guidance and modified 66 individual loans with aggregate principal balances totaling $12.5 million. More of these types of modifications are likely to be executed in the second quarter of 2020. The majority of these modifications involved short-term extensions and/or interest-only periods. For additional information, see “NOTE 18 - COVID - 19 Pandemic.”
Subsequent Events	Subsequent Events - The Company has evaluated events and transactions subsequent to March 31, 2020 for potential recognition or disclosure.
Employee Stock Ownership Plan	On January 1, 2012, the Company established an ESOP for eligible employees of the Company and the Bank. Employees of the Company and the Bank are eligible to participate in the ESOP if they have been credited with at least 1,000 hours of service during the employees’ first 12‑month period and based on the employee’s anniversary date will be vested in the ESOP. The employee will be 100% vested in the ESOP after two years of working at least 1,000 hours in each of those two years. As shares are committed to be released from collateral, the Company reports compensation expense equal to the average daily market prices of the shares at September 30, 2019 for the prior 90 days. These shares become outstanding for earnings per share computations. The compensation expense is accrued monthly throughout the year. Dividends on allocated ESOP shares are recorded as a reduction of retained earnings; dividends on unallocated ESOP shares are recorded as a reduction of debt and accrued interest.
Earnings Per Share	The Company computes earnings per share using the two-class method, which is an earnings allocation method for computing earnings per share that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Basic earnings per share are computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Unvested share-based awards containing non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per share pursuant to the two-class method. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. For earnings per share calculations, the ESOP shares committed to be released are included as outstanding shares for both basic and diluted earnings per share.
Application of New Accounting Guidance	Application of New Accounting Guidance Adopted in 2020 On January 1, 2020, the Company adopted FASB ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement . This ASU contains some technical adjustments related to the fair value disclosure requirements of public companies. Included in this ASU is the additional disclosure requirement of unrealized gains and losses for the period in recurring level 3 fair value disclosures and the range and weighted average of significant unobservable inputs, among other technical changes. The adoption of ASU 2018-13 did not have a material impact on the Company's consolidated financial statements.
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016‑13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, as amended by ASU 2018-19, ASU 2019-10, and ASU 2019-11. The ASU is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. The ASU requires the recognition and measurement of all current expected credit losses (“CECL”) for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the approach under CECL. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances. The ASU requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The ASU and associated amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022. Early adoption will be permitted for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company has selected a third-party vendor to assist in the implementation of this ASU and has run parallel computations as it continues to evaluate the impact of adoption of the new standard. As part of the implementation, management is also evaluating economic variables and forecast time horizons it believes to be most relevant based on the composition of the loans portfolio to develop a reasonable and supportable forecast, likely to include forecasted levels of employment, gross domestic product, and home price index, depending on the nature of the loan segment, as well as various loss methodologies to estimate expected credit losses. In addition, management has kept current on evolving interpretations and industry practices related to ASU 2016-13 via webcasts, publications, and conferences. Once adopted, the Company anticipates the allowance for loan losses to increase through a one‑time adjustment to retained earnings, however, until the evaluation is complete the magnitude of the potential increase will be unknown. In April 2019, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments . This ASU clarifies and improves areas of guidance related to the recently issued standards on credit losses, hedging, and recognition and measurement including improvements resulting from various FASB Transition Resource Group meetings. Early adoption is permitted. The Company plans to adopt Topic 326 of this ASU, in conjunction with ASU No. 2016-13, on January 1, 2023. The adoption of Topic 815 is not expected to have a material impact on the Company’s consolidated financial statements. In May 2019, the FASB issued ASU 2019-05, Financial Instruments-Credit Losses (Topic 326): Targeted Transition Relief . The amendments in this ASU provide entities that have certain instruments within the scope of Subtopic 326-20 with an option to irrevocably elect the fair value option in Subtopic 825-10, applied on an instrument-by-instrument basis for eligible instruments, upon the adoption of Topic 326. The fair value option election does not apply to held-to-maturity debt securities. An entity that elects the fair value option should subsequently measure those instruments at fair value with changes in fair value flowing through earnings. This ASU is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. The ASU should be applied on a modified-retrospective basis by means of a cumulative-effect adjustment to the opening balance of retained earnings balance in the balance sheet. Early adoption is permitted. The Company is currently assessing the impact that ASU 2019-05 will have on its consolidated financial statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing certain exceptions to the general principles in Topic 740, Income Taxes. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. The Company does not expect the adoption of ASU 2019-12 to have a material impact on its consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of reference Rate Reform on Financial Reporting. This ASU applies to contracts, hedging relationships and other transactions that reference LIBOR or other rate references expected to be discontinued because of reference rate reform. The ASU permits an entity to make necessary modifications to eligible contracts or transactions without requiring contract remeasurement or reassessment of a previous accounting determination. For a cash flow hedge, a change in the method used to assess hedge effectiveness will not result in dedesignation of the hedging relationship if certain criteria are met. This ASU is effective for all entities as of March 12, 2020 through December 31, 2022. The Company is party to cash flow hedge arrangements where the hedge effectiveness is based on LIBOR. The Company is currently evaluating the impact of the reference rate reform on the Company’s consolidated financial statements. Recent Events - On March 22, 2020, the federal banking agencies issued an “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus”. This guidance encourages financial institutions to work prudently with borrowers that may be unable to meet their contractual obligations because of the effects of the novel coronavirus of 2019 (“COVID-19”) pandemic. The guidance provides that short-term modifications (e.g. six months) made on a good faith basis to borrowers who were current as of the implementation date of a relief program are not Troubled Debt Restructurings (“TDRs”). The Coronavirus Aid, Relief, and Economic Security Act of 2020 signed into law on March 27, 2020 ("CARES Act") provided similar guidance around the modification of loans as a result of the COVID-19 pandemic, providing, among other criteria, that modifications made between March 1, 2020, and the earlier of December 31, 2020, or 60 days after the COVID-19 emergency is terminated, on a good faith basis to borrowers who were current as of December 31, 2019, are not TDRs. This includes modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment. Borrowers are considered current under the CARES Act if they are not more than 30 days past due on their contractual payments as of December 31, 2019. Through March 31, 2020, the Bank had applied the interagency statement guidance and modified 66 individual loans with aggregate principal balances totaling $12.5 million. More of these types of modifications are likely to be executed in the second quarter of 2020. The majority of these modifications involved short-term extensions and/or interest-only periods. For additional information, see “NOTE 18 - COVID - 19 Pandemic.”
Loan Portfolio Segment	The Company has defined its loan portfolio into three segments that reflect the structure of the lending function, the Company’s strategic plan and the manner in which management monitors performance and credit quality. The three loan portfolio segments are: (a) Real Estate Loans, (b) Consumer Loans, and (c) Commercial Business Loans. Each of these segments is disaggregated into classes based on the risk characteristics of the borrower and/or the collateral type securing the loan. The following is a summary of each of the Company’s loan portfolio segments and classes: Real Estate Loans Commercial Lending . Loans originated by the Company primarily secured by income producing properties, including retail centers, warehouses, and office buildings located in our market areas. Construction and Development Lending . Loans originated by the Company for the construction of, and secured by, commercial real estate, one-to-four-family, and multi-family residences and tracts of land for development that are not pre-sold. A small portion of the one-to-four-family construction portfolio is custom construction loans to the intended occupant of the residence. Home Equity Lending . Loans originated by the Company secured by second mortgages on one-to-four-family residences, including home equity lines of credit in our market areas. One-to-Four-Family Real Estate Lending . One-to-four-family residential loans include owner occupied properties (including second homes), and non-owner occupied properties with four or less units. These loans originated by the Company or purchased from banks are secured by first mortgages on one-to-four-family residences in our market areas that the Company intends to hold (excludes loans held for sale). Multi-Family Lending . Apartment term lending (five or more units) to current banking customers and community reinvestment loans for low to moderate income individuals in the Company’s footprint. Consumer Loans Indirect Home Improvement . Fixture secured loans for home improvement are originated by the Company through its network of home improvement contractors and dealers and are secured by the personal property installed in, on, or at the borrower’s real property, and may be perfected with a UCC‑2 financing statement filed in the county of the borrower’s residence. These indirect home improvement loans include replacement windows, siding, roofing, pools, and other home fixture installations, including solar related home improvement projects. Marine . Loans originated by the Company, secured by boats, to borrowers primarily located in the states we originate consumer loans. Other Consumer. Loans originated by the Company to consumers in our retail branch footprint, including automobiles, recreational vehicles, direct home improvement loans, loans on deposits, and other consumer loans, primarily consisting of personal lines of credit and credit cards. Commercial Business Loans Commercial and Industrial Lending (“C&I”) . Loans originated by the Company to local small- and mid-sized businesses in our Puget Sound market area are secured primarily by accounts receivable, inventory, or personal property, plant and equipment. Some of the C&I loans purchased by the Company are outside of the Greater Puget Sound market area. C&I loans are made on the basis of the borrower’s ability to make repayment from the cash flow of the borrower’s business. Warehouse Lending . Loans originated to non-depository financial institutions and secured by notes originated by the non-depository financial institution. The Company has two distinct warehouse lending divisions: commercial warehouse re-lending secured by notes on construction loans and mortgage warehouse re-lending secured by notes on one-to-four-family loans. The Company’s commercial construction warehouse lines are secured by notes on construction loans and typically guaranteed by principals with experience in construction lending. Mortgage warehouse lending loans are funded through third-party residential mortgage bankers. Under this program the Company provides short-term funding to the mortgage banking companies for the purpose of originating residential mortgage loans for sale into the secondary market.
Credit Quality Indicators	The Company utilizes a risk grading matrix to assign a risk grade to its real estate and commercial business loans. Loans are graded on a scale of 1 to 10, with loans in risk grades 1 to 6 considered “Pass” and loans in risk grades 7 to 10 are reported as classified loans in the Company’s allowance for loan loss analysis. A description of the 10 risk grades is as follows: · Grades 1 and 2 - These grades include loans to very high quality borrowers with excellent or desirable business credit. · Grade 3 - This grade includes loans to borrowers of good business credit with moderate risk. · Grades 4 and 5 - These grades include “Pass” grade loans to borrowers of average credit quality and risk. · Grade 6 - This grade includes loans on management’s “Watch” list and is intended to be utilized on a temporary basis for “Pass” grade borrowers where frequent and thorough monitoring is required due to credit weaknesses and where significant risk-modifying action is anticipated in the near term. · Grade 7 - This grade is for “Other Assets Especially Mentioned” (“OAEM”) in accordance with regulatory guidelines and includes borrowers where performance is poor or significantly less than expected. · Grade 8 - This grade includes “Substandard” loans in accordance with regulatory guidelines which represent an unacceptable business credit where a loss is possible if loan weakness is not corrected. · Grade 9 - This grade includes “Doubtful” loans in accordance with regulatory guidelines where a loss is highly probable. · Grade 10 - This grade includes “Loss” loans in accordance with regulatory guidelines for which total loss is expected and when identified are charged off. Consumer, Home Equity, and One-to-Four-Family Real Estate Loans Homogeneous loans are risk rated based upon the Federal Financial Institutions Examination Council’s Uniform Retail Credit Classification and Account Management Policy. Loans classified under this policy at the Company are consumer loans which include indirect home improvement, solar, marine, other consumer, and one-to-four-family first and second liens. Under the Uniform Retail Credit Classification Policy, loans that are current or less than 90 days past due are graded “Pass” and risk rated “4” or “5” internally. Loans that are past due more than 90 days are classified “Substandard” and risk rated “8” internally until the loan has demonstrated consistent performance, typically six months of contractual payments. Closed-end loans that are 120 days past due and open-end loans that are 180 days past due are charged off based on the value of the collateral less cost to sell. Commercial real estate, construction and development, multi-family and commercial business loans are evaluated individually for their risk classification and may be classified as “Substandard” even if current on their loan payment obligations.
Determination of Fair Market Values	The following methods were used to estimate the fair value of certain assets and liabilities on a recurring and nonrecurring basis: Securities Available-for-Sale - The fair value of securities available-for-sale are recorded on a recurring basis. The fair value of investments and mortgage-backed securities are provided by a third-party pricing service. These valuations are based on market data using pricing models that vary by asset class and incorporate available current trade, bid, and other market information, and for structured securities, cash flow, and loan performance data. The pricing processes utilize benchmark curves, benchmarking of similar securities, sector groupings, and matrix pricing. Option adjusted spread models are also used to assess the impact of changes in interest rates and to develop prepayment scenarios (Level 2). Certain other corporate securities and municipal bonds are generally measured at fair value based on discounted cash flow models (Level 3). Transfers between the fair value hierarchy are determined through the third-party service provider which, from time to time will transfer between levels based on market conditions per the related security. All models and processes used take into account market convention. Mortgage Loans Held for Sale - The fair value of loans held for sale reflects the value of commitments with investors and/or the relative price as delivered into a TBA mortgage-backed security (Level 2). Derivative Instruments - Fair values for derivative assets and liabilities are measured on a recurring basis. The primary use of derivative instruments is related to the mortgage banking activities of the Company. The fair value of the interest rate lock commitments and forward sales commitments are estimated using quoted or published market prices for similar instruments, adjusted for factors such as pull-though rate assumptions based on historical information, where appropriate. TBA mortgage-backed securities are fair valued on similar contracts in active markets (Level 2), while locks and forwards with customers and investors are fair valued using similar contracts in the market and changes in the market interest rates (Level 2 and 3). Derivative instruments not related to mortgage banking activities include interest rate swap agreements. The fair values of interest rate swap agreements are based on valuation models using observable market data as of the measurement date (Level 2). The Company’s derivatives are traded in an over-the-counter market where quoted market prices are not always available. Therefore, the fair values of derivatives are determined using quantitative models that utilize multiple market inputs. The inputs will vary based on the type of derivative, but could include interest rates, prices and indices to generate continuous yield or pricing curves, prepayment rates, and volatility factors to value the position. The majority of market inputs are actively quoted and can be validated through external sources, including market transactions and third-party pricing services. The fair values of all interest rate swaps are determined from third-party pricing services without adjustment. Impaired Loans - Fair value adjustments to impaired collateral dependent loans are recorded to reflect partial write-downs based on the current appraised value of the collateral or internally developed models, which contain management’s assumptions. Management will utilize discounted cashflow impairment for troubled debt restructures when the change in terms results in a discount to the overall cashflows to be received (Level 3). Other Real Estate Owned - Fair value adjustments to OREO are recorded at the lower of carrying amount of the loan or fair value of the collateral less selling costs. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell (Level 3). Servicing Rights - The fair value of mortgage servicing rights are estimated using net present value of expected cash flows using a third party model that incorporates assumptions used in the industry to value such rights, adjusted for factors such as weighted average prepayments speeds based on historical information where appropriate (Level 3).
Nonaccrual and Past Due Loans	Non-accrual and Past Due Loans . Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are automatically placed on non-accrual once the loan is 90 days past due or sooner if, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, or as required by regulatory authorities. The exception is the legacy Anchor Bank credit card portfolio which is serviced externally and loans are manually placed on non-accrual once the credit card payment is 90 days past due. As a result of the negative impact on employment from the COVID-19 pandemic, we are anticipating higher levels of financial hardship for our customers, which we expect will lead to higher levels of forbearance, delinquency and defaults. We expect that, left unabated, this deterioration in forbearance, delinquency and default rates will persist until such time as the economy and employment return to relatively normal levels. We assist customers with an array of payment programs during periods of financial hardship, including forbearance. Forbearance allows a borrower to temporarily not make scheduled payments or to make smaller than scheduled payments, in each case for a specified period of time. Forbearance does not grant any reduction in the total principal or interest repayment obligation. While a loan is in forbearance status, interest continues to accrue and is repaid over a specified time period when the loan re-enters repayment status.
Loan Commitments	The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments.

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The following tables present the amortized costs, unrealized gains, unrealized losses, and estimated fair values of securities available-for-sale at March 31, 2020 and December 31, 2019: March 31, 2020 Estimated Amortized Unrealized Unrealized Fair SECURITIES AVAILABLE-FOR-SALE Cost Gains Losses Values U.S. agency securities $ 6,991 $ 136 $ — $ 7,127 Corporate securities 19,858 144 (151) 19,851 Municipal bonds 31,062 475 (131) 31,406 Mortgage-backed securities 74,503 2,271 (41) 76,733 U.S. Small Business Administration securities 20,684 672 (7) 21,349 Total securities available-for-sale $ 153,098 $ 3,698 $ (330) $ 156,466 December 31, 2019 Estimated Amortized Unrealized Unrealized Fair SECURITIES AVAILABLE-FOR-SALE Cost Gains Losses Values U.S. agency securities $ 8,986 $ 95 $ (15) $ 9,066 Corporate securities 10,525 52 (7) 10,570 Municipal bonds 20,516 604 — 21,120 Mortgage-backed securities 62,745 405 (300) 62,850 U.S. Small Business Administration securities 22,281 191 (21) 22,451 Total securities available-for-sale $ 125,053 $ 1,347 $ (343) $ 126,057
Schedule of Unrealized Loss on Investments	Investment securities that were in an unrealized loss position at March 31, 2020 and December 31, 2019 are presented in the following tables, based on the length of time individual securities have been in an unrealized loss position. Management believes that these securities are only temporarily impaired due to changes in market interest rates or the widening of market spreads subsequent to the initial purchase of the securities, and not due to concerns regarding the underlying credit of the issuers or the underlying collateral. March 31, 2020 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized SECURITIES AVAILABLE-FOR-SALE Value Losses Value Losses Value Losses Corporate securities $ 7,729 $ (151) $ — $ — $ 7,729 $ (151) Municipal bonds 10,285 (131) — — 10,285 (131) Mortgage-backed securities 4,578 (19) 2,411 (22) 6,989 (41) U.S. Small Business Administration securities 1,955 (7) — — 1,955 (7) Total $ 24,547 $ (308) $ 2,411 $ (22) $ 26,958 $ (330) December 31, 2019 Less than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized SECURITIES AVAILABLE-FOR-SALE Value Losses Value Losses Value Losses U.S. agency securities $ 2,977 $ (15) $ — $ — $ 2,977 $ (15) Corporate securities 1,993 (7) — — 1,993 (7) Mortgage-backed securities 12,345 (154) 11,459 (146) 23,804 (300) U.S. Small Business Administration securities 4,395 (21) — — 4,395 (21) Total $ 21,710 $ (197) $ 11,459 $ (146) $ 33,169 $ (343)
Schedule of Available for Sale Securities by Contractual Maturity	The contractual maturities of securities available-for-sale at March 31, 2020 and December 31, 2019 are listed below. Expected maturities of mortgage-backed securities may differ from contractual maturities because borrowers may have the right to call or prepay the obligations; therefore, these securities are classified separately with no specific maturity date. March 31, 2020 December 31, 2019 Amortized Fair Amortized Fair U.S. agency securities Cost Value Cost Value Due after one year through five years $ 992 $ 1,068 $ 996 $ 1,036 Due after five years through ten years 3,999 4,041 3,997 4,027 Due after ten years 2,000 2,018 3,993 4,003 Subtotal 6,991 7,127 8,986 9,066 Corporate securities Due in one year or less 5,024 5,003 5,034 5,044 Due after one year through five years 5,854 5,763 3,491 3,532 Due after five years through ten years 8,980 9,085 2,000 1,994 Subtotal 19,858 19,851 10,525 10,570 Municipal bonds Due after one year through five years 3,768 3,680 3,774 3,833 Due after five years through ten years 5,215 5,301 3,162 3,307 Due after ten years 22,079 22,425 13,580 13,980 Subtotal 31,062 31,406 20,516 21,120 Mortgage-backed securities Federal National Mortgage Association (“FNMA”) 51,139 52,933 42,131 42,333 Federal Home Loan Mortgage Corporation (“FHLMC”) 17,698 18,083 15,250 15,179 Government National Mortgage Association (“GNMA”) 5,666 5,717 5,364 5,338 Subtotal 74,503 76,733 62,745 62,850 U.S. Small Business Administration securities Due after one year through five years 1,186 1,210 1,546 1,555 Due after five years through ten years 10,467 10,787 11,500 11,598 Due after ten years 9,031 9,352 9,235 9,298 Subtotal 20,684 21,349 22,281 22,451 Total $ 153,098 $ 156,466 $ 125,053 $ 126,057

Loans Receivable and Allowanc_2

Loans Receivable and Allowance For Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The composition of the loan portfolio was as follows at March 31, 2020 and December 31, 2019: March 31, December 31, REAL ESTATE LOANS 2020 2019 Commercial $ 220,509 $ 210,749 Construction and development 168,658 179,654 Home equity 37,503 38,167 One-to-four-family (excludes loans held for sale) 305,436 261,539 Multi-family 130,570 133,931 Total real estate loans 862,676 824,040 CONSUMER LOANS Indirect home improvement 261,566 254,691 Marine 69,473 67,179 Other consumer 4,056 4,340 Total consumer loans 335,095 326,210 COMMERCIAL BUSINESS LOANS Commercial and industrial 149,086 140,531 Warehouse lending 65,017 61,112 Total commercial business loans 214,103 201,643 Total loans receivable, gross 1,411,874 1,351,893 Allowance for loan losses (16,872) (13,229) Deferred costs and fees, net (3,425) (3,273) Premiums on purchased loans, net 1,493 955 Total loans receivable, net $ 1,393,070 $ 1,336,346
Allowance for Credit Losses on Financing Receivables	The following tables detail activity in the allowance for loan losses by loan categories at or for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 Commercial ALLOWANCE FOR LOAN LOSSES Real Estate Consumer Business Unallocated Total Beginning balance $ 6,206 $ 3,766 $ 3,254 $ 3 $ 13,229 Provision for loan losses 1,019 660 824 1,183 3,686 Charge-offs — (370) (11) — (381) Recoveries 18 143 177 — 338 Net recoveries (charge-offs) 18 (227) 166 — (43) Ending balance $ 7,243 $ 4,199 $ 4,244 $ 1,186 $ 16,872 Period end amount allocated to: Loans individually evaluated for impairment $ 15 $ 231 $ — $ — $ 246 Loans collectively evaluated for impairment 7,228 3,968 4,244 1,186 16,626 Ending balance $ 7,243 $ 4,199 $ 4,244 $ 1,186 $ 16,872 LOANS RECEIVABLE Loans individually evaluated for impairment $ 2,528 $ 664 $ — $ — $ 3,192 Loans collectively evaluated for impairment 860,148 334,431 214,103 — 1,408,682 Ending balance $ 862,676 $ 335,095 $ 214,103 $ — $ 1,411,874 At or For the Three Months Ended March 31, 2019 Commercial ALLOWANCE FOR LOAN LOSSES Real Estate Consumer Business Unallocated Total Beginning balance $ 5,761 $ 3,351 $ 3,191 $ 46 $ 12,349 Provision (recapture) for loan losses 24 114 691 (79) 750 Charge-offs — (250) (1,152) — (1,402) Recoveries — 148 — — 148 Net charge-offs — (102) (1,152) — (1,254) Ending balance $ 5,785 $ 3,363 $ 2,730 $ (33) $ 11,845 Period end amount allocated to: Loans individually evaluated for impairment $ 173 $ 160 $ — $ — $ 333 Loans collectively evaluated for impairment 5,612 3,203 2,730 (33) 11,512 Ending balance $ 5,785 $ 3,363 $ 2,730 $ (33) $ 11,845 LOANS RECEIVABLE Loans individually evaluated for impairment $ 1,156 $ 457 $ 431 $ — $ 2,044 Loans collectively evaluated for impairment 832,259 283,959 178,808 — 1,295,026 Ending balance $ 833,415 $ 284,416 $ 179,239 $ — $ 1,297,070
Past Due Financing Receivables	March 31, 2020 30-59 60-89 Days Days 90 Days Total Total Past Past or More Past Loans Non- REAL ESTATE LOANS Due Due Past Due Due Current Receivable Accrual Commercial $ — $ — $ — $ — $ 220,509 $ 220,509 $ 1,083 Construction and development — — — — 168,658 168,658 — Home equity 204 289 220 713 36,790 37,503 220 One-to-four-family 2,203 — 1,112 3,315 302,121 305,436 1,225 Multi-family — — — — 130,570 130,570 — Total real estate loans 2,407 289 1,332 4,028 858,648 862,676 2,528 CONSUMER LOANS Indirect home improvement 654 266 171 1,091 260,475 261,566 533 Marine 14 — 124 138 69,335 69,473 124 Other consumer 22 12 2 36 4,020 4,056 7 Total consumer loans 690 278 297 1,265 333,830 335,095 664 COMMERCIAL BUSINESS LOANS Commercial and industrial — — — — 149,086 149,086 — Warehouse lending — — — — 65,017 65,017 — Total commercial business loans — — — — 214,103 214,103 — Total loans $ 3,097 $ 567 $ 1,629 $ 5,293 $ 1,406,581 $ 1,411,874 $ 3,192 December 31, 2019 30-59 60-89 Days Days 90 Days Total Total Past Past or More Past Loans Non- REAL ESTATE LOANS Due Due Past Due Due Current Receivable Accrual Commercial $ — $ — $ — $ — $ 210,749 $ 210,749 $ 1,086 Construction and development 533 — — 533 179,121 179,654 — Home equity 109 — 185 294 37,873 38,167 190 One-to-four-family 894 114 1,150 2,158 259,381 261,539 1,264 Multi-family — — — — 133,931 133,931 — Total real estate loans 1,536 114 1,335 2,985 821,055 824,040 2,540 CONSUMER LOANS Indirect home improvement 692 227 147 1,066 253,625 254,691 468 Marine 15 — — 15 67,164 67,179 — Other consumer 71 2 20 93 4,247 4,340 25 Total consumer loans 778 229 167 1,174 325,036 326,210 493 COMMERCIAL BUSINESS LOANS Commercial and industrial — — — — 140,531 140,531 — Warehouse lending — — — — 61,112 61,112 — Total commercial business loans — — — — 201,643 201,643 — Total loans $ 2,314 $ 343 $ 1,502 $ 4,159 $ 1,347,734 $ 1,351,893 $ 3,033
Impaired Financing Receivables	The following tables provide additional information about our impaired loans that have been segregated to reflect loans for which an allowance for loan losses has been provided and loans for which no allowance was provided at March 31, 2020 and December 31, 2019: March 31, 2020 Unpaid WITH NO RELATED ALLOWANCE RECORDED Principal Recorded Related Real estate loans: Balance Investment Allowance Commercial $ 1,094 $ 1,083 $ — Home equity 271 220 — One-to-four-family 1,193 1,165 — Consumer loans: Other consumer 5 5 — 2,563 2,473 — WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 61 60 15 Consumer loans: Indirect 533 533 187 Marine 124 124 43 Other consumer 2 2 1 720 719 246 Total $ 3,283 $ 3,192 $ 246 December 31, 2019 Unpaid WITH NO RELATED ALLOWANCE RECORDED Principal Recorded Related Real estate loans: Balance Investment Allowance Commercial $ 1,097 $ 1,086 $ — Home equity 278 225 — One-to-four-family 1,293 1,264 Consumer loans Other consumer 17 17 — 2,685 2,592 — WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 61 60 15 Consumer loans: Indirect 468 468 164 Other consumer 8 8 3 537 536 182 Total $ 3,222 $ 3,128 $ 182 The following tables present the average recorded investment in loans individually evaluated for impairment and the interest income recognized and received for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 March 31, 2019 WITH NO RELATED ALLOWANCE RECORDED Average Recorded Interest Income Average Recorded Interest Income Real estate loans: Investment Recognized Investment Recognized Commercial $ 1,084 $ 8 $ — $ — Home equity 220 — 267 — One-to-four-family 1,230 5 830 15 Consumer loans: Other consumer 5 — — — Commercial business loans: Commercial and industrial — — 431 — 2,539 13 1,528 15 WITH RELATED ALLOWANCE RECORDED Real estate loans: One-to-four-family 60 — 1,156 — Consumer loans: Indirect 548 13 441 9 Marine 41 — 13 — Other consumer 1 — 5 — Commercial business loans: Commercial and industrial — — 1,152 7 650 13 2,767 16 Total $ 3,189 $ 26 $ 4,295 $ 31
Financing Receivable Credit Quality Indicators	The following tables summarize risk rated loan balances by category at the dates indicated: March 31, 2020 Special Pass Watch Mention Substandard Doubtful Loss REAL ESTATE LOANS (1 - 5) (6) (7) (8) (9) (10) Total Commercial $ 168,015 $ 46,802 $ 3,675 $ 2,017 $ — $ — $ 220,509 Construction and development 165,848 2,810 — — — — 168,658 Home equity 37,283 — — 220 — — 37,503 One-to-four-family 304,046 165 — 1,225 — — 305,436 Multi-family 130,570 — — — — — 130,570 Total real estate loans 805,762 49,777 3,675 3,462 — — 862,676 CONSUMER LOANS Indirect home improvement 261,033 — — 533 — — 261,566 Marine 69,349 — — 124 — — 69,473 Other consumer 4,049 — — 7 — — 4,056 Total consumer loans 334,431 — — 664 — — 335,095 COMMERCIAL BUSINESS LOANS Commercial and industrial 105,396 32,119 8,058 3,513 — — 149,086 Warehouse lending 61,202 3,815 — — — — 65,017 Total commercial business loans 166,598 35,934 8,058 3,513 — — 214,103 Total loans receivable, gross $ 1,306,791 $ 85,711 $ 11,733 $ 7,639 $ — $ — $ 1,411,874 December 31, 2019 Special Pass Watch Mention Substandard Doubtful Loss REAL ESTATE LOANS (1 - 5) (6) (7) (8) (9) (10) Total Commercial $ 203,703 $ 2,274 $ 3,686 $ 1,086 $ — $ — $ 210,749 Construction and development 177,109 2,545 — — — — 179,654 Home equity 37,942 — 35 190 — — 38,167 One-to-four-family 259,580 635 60 1,264 — — 261,539 Multi-family 127,792 6,139 — — — — 133,931 Total real estate loans 806,126 11,593 3,781 2,540 — — 824,040 CONSUMER LOANS Indirect home improvement 254,223 — — 468 — — 254,691 Marine 67,179 — — — — — 67,179 Other consumer 4,315 — — 25 — — 4,340 Total consumer loans 325,717 — — 493 — — 326,210 COMMERCIAL BUSINESS LOANS Commercial and industrial 125,025 10,435 1,442 3,629 — — 140,531 Warehouse lending 61,112 — — — — — 61,112 Total commercial business loans 186,137 10,435 1,442 3,629 — — 201,643 Total loans receivable, gross $ 1,317,980 $ 22,028 $ 5,223 $ 6,662 $ — $ — $ 1,351,893

Servicing Rights (Tables)

Servicing Rights (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Summary of servicing rights activity	The following tables summarize servicing rights activity for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 2019 Beginning balance $ 11,560 $ 10,429 Additions 1,185 844 Servicing rights amortized (1,605) (639) Impairment of servicing rights (514) (23) Ending balance $ 10,626 $ 10,611
Key economic assumptions and the sensitivity of the current fair value for single family mortgage servicing rights	Key economic assumptions of the current fair value for single family MSR are presented in the table below. Also presented is the sensitivity to market rate changes for the par rate coupon for a conventional one-to-four-family FNMA, FHLMC, GNMA, or FHLB serviced home loan. The table below references a 50 basis point and 100 basis point adverse rate change and the impact on prepayment speeds and discount rates at March 31, 2020 and December 31, 2019: March 31, 2020 December 31, 2019 Aggregate portfolio principal balance $ 1,490,874 $ 1,463,732 Weighted average rate of note 4.2 % % At March 31, 2020 Base 0.5% Adverse Rate Change 1.0% Adverse Rate Change Conditional prepayment rate 23.3 % 31.9 % 36.4 % Fair value MSR $ 10,855 $ 8,638 $ 7,796 Percentage of MSR 0.7 % 0.6 % 0.5 % Discount rate 9.1 % 9.6 % 10.1 % Fair value MSR $ 10,855 $ 10,706 $ 10,561 Percentage of MSR 0.7 % 0.7 % 0.7 % At December 31, 2019 Base 0.5% Adverse Rate Change 1.0% Adverse Rate Change Conditional prepayment rate 17.1 % 24.6 % 32.5 % Fair value MSR $ 13,255 $ 10,582 $ 8,674 Percentage of MSR 0.9 % 0.7 % 0.6 % Discount rate 9.7 % 10.2 % 10.7 % Fair value MSR $ 13,255 $ 13,037 $ 12,826 Percentage of MSR 0.9 % 0.9 % 0.9 %
Mortgage servicing rights
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Valuation assumptions	The following provides valuation assumptions used in determining the fair value of mortgage servicing rights (“MSR”) at the dates indicated: At March 31, At December 31, Key assumptions: 2020 2019 Weighted average discount rate 9.1 % 9.7 % Conditional prepayment rate (“CPR”) 23.3 % 17.1 % Weighted average life in years 3.9 5.1

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following tables summarize the Company’s derivative instruments at the dates indicated: March 31, 2020 Fair Value Cash flow hedges: Notional Asset Liability Interest rate swaps $ 60,000 $ — $ 1,051 Non-hedging derivatives: Fallout adjusted interest rate lock commitments with customers 207,564 4,291 — Mandatory and best effort forward commitments with investors 60,368 — 181 Forward TBA mortgage-backed securities 248,000 — 3,723 December 31, 2019 Fair Value Non-hedging derivatives: Notional Asset Liability Fallout adjusted interest rate lock commitments with customers $ 33,914 $ 557 $ — Mandatory and best effort forward commitments with investors 43,752 — 195 Forward TBA mortgage-backed securities 46,000 — 8

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Summary of lease cost	The components of lease cost (included in occupancy expense on the Consolidated Statements of Income) are as follows for the three months ended March 31, 2020 and 2019: Three Months Ended Three Months Ended Lease cost: March 31, 2020 March 31, 2019 Operating lease cost $ 343 $ 308 Short-term lease cost 8 46 Total lease cost $ 351 $ 354
Supplemental information related to operating leases	The following table provides supplemental information related to operating leases at or for the three months ended March 31, 2020 and 2019: Cash paid for amounts included in the measurement At or For the Three Months Ended At or For the Three Months Ended of lease liabilities: March 31, 2020 March 31, 2019 Operating cash flows from operating leases $ 336 $ 334 Weighted average remaining lease term- operating leases 5.2 years 5.8 years Weighted average discount rate- operating leases 2.97 % 3.08 %
Summary of maturities of operating lease liabilities	Maturities of operating lease liabilities at March 31, 2020 for future periods are as follows: Remainder of 2020 $ 944 2021 1,169 2022 1,065 2023 674 2024 614 Thereafter 884 Total lease payments 5,350 Less imputed interest (452) Total $ 4,898

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Schedule of Other Real Estate Owned	The following table presents the activity related to OREO at or for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 2019 Beginning balance $ 168 $ 689 Additions — 77 Gross proceeds from sale of OREO (76) (684) (Loss) gain on sale of OREO (2) 85 Ending balance $ 90 $ 167

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Schedule of Deposit Liabilities	Deposits are summarized as follows at March 31, 2020 and December 31, 2019: March 31, December 31, 2020 2019 Noninterest-bearing checking $ 267,966 $ 260,131 Interest-bearing checking 208,952 177,972 Savings 123,052 118,845 Money market 303,405 270,489 Certificates of deposit less than $100,000 263,787 277,988 Certificates of deposit of $100,000 through $250,000 176,322 181,402 Certificates of deposit of $250,000 and over 85,185 92,110 Escrow accounts related to mortgages serviced 17,600 13,471 Total $ 1,446,269 $ 1,392,408
Schedule of Maturities of Time Deposits for Future Periods	Scheduled maturities of time deposits at March 31, 2020 for future periods ending are as follows: At March 31, 2020 Maturing in 2020 $ 273,650 Maturing in 2021 152,427 Maturing in 2022 63,458 Maturing in 2023 15,111 Maturing in 2024 17,505 Thereafter 3,143 Total $ 525,294
Schedule of Interest Expense by Deposit Category	Interest expense by deposit category for the three months ended March 31, 2020 and 2019 is as follows: Three Months Ended March 31, 2020 2019 Interest-bearing checking $ 136 $ 196 Savings and money market 826 763 Certificates of deposit 2,845 2,751 Total $ 3,807 $ 3,710

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments to Extend Credit	The following table provides a summary of the Company’s commitments at March 31, 2020 and December 31, 2019: COMMITMENTS TO EXTEND CREDIT March 31, December 31, REAL ESTATE LOANS 2020 2019 Commercial $ 1,332 $ 247 Construction and development 106,862 95,031 One-to-four-family (includes locks for salable loans) 218,244 39,697 Home equity 46,558 47,880 Multi-family 630 622 Total real estate loans 373,626 183,477 CONSUMER LOANS 22,331 22,176 COMMERCIAL BUSINESS LOANS Commercial and industrial 82,202 72,731 Warehouse lending 26,983 33,888 Total commercial business loans 109,185 106,619 Total commitments to extend credit $ 505,142 $ 312,272

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule Of Available For Sale Securities Measured At Fair Value On A Recurring Basis	The following tables present securities available-for-sale, mortgage loans held for sale, and derivative assets and liabilities measured at fair value on a recurring basis at the dates indicated: Financial Assets At March 31, 2020 Securities available-for-sale: Level 1 Level 2 Level 3 Total U.S. agency securities $ — $ 7,127 $ — $ 7,127 Corporate securities — 18,815 1,036 19,851 Municipal bonds — 31,271 135 31,406 Mortgage-backed securities — 76,733 — 76,733 U.S. Small Business Administration securities — 21,349 — 21,349 Mortgage loans held for sale, at fair value — 115,632 — 115,632 Derivatives: Interest rate lock commitments with customers — — 4,291 4,291 Total assets measured at fair value $ — $ 270,927 $ 5,462 $ 276,389 Financial Liabilities Derivatives: Individual forward sale commitments with investors $ — $ (3,723) $ (181) $ (3,904) Interest rate swaps — (1,051) — (1,051) Total liabilities measured at fair value $ — $ (3,723) $ (181) $ (3,904) Financial Assets At December 31, 2019 Securities available-for-sale: Level 1 Level 2 Level 3 Total U.S. agency securities $ — $ 9,066 $ — $ 9,066 Corporate securities — 9,546 1,024 10,570 Municipal bonds — 20,982 138 21,120 Mortgage-backed securities — 62,850 — 62,850 U.S. Small Business Administration securities — 22,451 — 22,451 Mortgage loans held for sale, at fair value — 69,699 — 69,699 Derivatives: Interest rate lock commitments with customers — — 557 557 Total assets measured at fair value $ — $ 194,594 $ 1,719 $ 196,313 Financial Liabilities Derivatives: Individual forward sale commitments with investors $ — $ (8) $ (195) $ (203) Total liabilities measured at fair value $ — $ (8) $ (195) $ (203)
Schedule of impaired loans and other real estate owned	The following tables present impaired loans, OREO, and servicing rights measured at fair value on a nonrecurring basis for which a nonrecurring change in fair value has been recorded during the reporting periods indicated. The amounts disclosed below represent the fair values at the time the nonrecurring fair value measurements were evaluated. March 31, 2020 Level 1 Level 2 Level 3 Total Impaired loans $ — $ — $ 3,192 $ 3,192 OREO — — 90 90 Servicing rights — — 10,855 10,855 December 31, 2019 Level 1 Level 2 Level 3 Total Impaired loans $ — $ — $ 3,128 $ 3,128 OREO — — 168 168 Servicing rights — — 13,255 13,255
Fair value reconciliation - Level 3 on recurring basis	The following tables provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the three months ended March 31, 2020 and 2019: Purchases Net change Net change Beginning and Sales and Transfers Ending in fair value in fair value 2020 Balance Issuances Settlements In Balance for gains/(losses) (1) for gains (2) Interest rate lock commitments with customers $ 557 $ 7,411 $ (3,677) $ — $ 4,291 $ 3,734 $ — Individual forward sale commitments with investors (195) (531) 545 — (181) 14 — Securities available-for-sale, at fair value 1,162 12 (3) — 1,171 — 12 2019 Interest rate lock commitments with customers $ 503 $ 1,931 $ (1,748) $ — $ 686 $ 183 $ — Individual forward sale commitments with investors (34) (162) 100 — (96) (62) —
Fair Value, by Balance Sheet Grouping	The following table provides estimated fair values of the Company’s financial instruments at March 31, 2020 and December 31, 2019, whether or not recognized at fair value on the Consolidated Balance Sheets: March 31, December 31, 2020 2019 Financial Assets Carrying Fair Carrying Fair Level 1 inputs: Amount Value Amount Value Cash and cash equivalents $ 48,921 $ 48,921 $ $ Certificates of deposit at other financial institutions 17,926 17,926 Level 2 inputs: Securities available-for-sale, at fair value 155,295 155,295 Loans held for sale, at fair value 115,632 115,632 FHLB stock, at cost 10,921 10,921 Accrued interest receivable 6,326 6,326 Level 3 inputs: Securities available-for-sale, at fair value 1,171 1,171 1,162 1,162 Loans receivable, gross 1,411,874 1,413,954 Servicing rights, held at lower of cost or fair value 10,626 10,855 Fair value interest rate locks with customers 4,291 4,291 Financial Liabilities Level 2 inputs: Deposits 1,446,269 1,452,760 Borrowings 159,114 163,294 Subordinated note 9,890 10,599 Accrued interest payable 293 293 Paired off commitments with investors 112 112 Interest rate swaps 1,051 1,051 — — Individual forward sale commitments with investors 3,723 3,723 Level 3 inputs: Individual forward sale commitments with investors 181 181
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation assumptions	Shown in the table below is the fair value of financial instruments measured under a Level 3 unobservable input on a recurring and nonrecurring basis at March 31, 2020 and December 31, 2019: Level 3 Significant Weighted Average Fair Value Valuation Unobservable March 31, December 31, Instruments Techniques Inputs Range 2020 2019 RECURRING Interest rate lock commitments with customers Quoted market prices Pull-through expectations 80% - 99% 91.5 % 94.5 % Individual forward sale commitments with investors Quoted market prices Pull-through expectations 80% - 99% 91.5 % 94.5 % Corporate securities Discounted cash flows Discount rate 1.6% 1.6 % 2.1 % Municipal bonds Discounted cash flows Discount rate 2.5% - 2.6% 2.6 % 3.4 % NONRECURRING Impaired loans Fair value of underlying collateral Discount applied to the obtained appraisal 10.0% 10.0 % 10.0 % OREO Fair value of collateral Discount applied to the obtained appraisal 10.0% 10.0 % 10.0 % Servicing rights Industry sources Pre-payment speeds 0% - 50% 23.3 % 17.1 %

Employee Benefits (Tables)

Employee Benefits (Tables)	3 Months Ended
	Mar. 31, 2020
Compensation and Retirement Disclosure [Abstract]
Schedule of Shares Under ESOP	Shares held by the ESOP at March 31, 2020 and 2019 were as follows (shown as actual): Balances Balances at March 31, 2020 at March 31, 2019 Allocated shares 189,511 176,809 Committed to be released shares 6,480 6,480 Unallocated shares 45,362 71,283 Total ESOP shares 241,353 254,572 Fair value of unallocated shares (in thousands) $ 2,276 $ 3,530

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, Numerator (in thousands): 2020 2019 Net income $ 5,167 $ 5,192 Dividends and undistributed earnings allocated to participating securities (56) — Net income available to common shareholders $ 5,111 $ 5,192 Denominator (shown as actual): Basic weighted average common shares outstanding 4,391,499 4,355,307 Dilutive shares 87,419 138,119 Diluted weighted average common shares outstanding 4,478,918 4,493,426 Basic earnings per share $ 1.16 $ 1.19 Diluted earnings per share $ 1.14 $ 1.15 Potentially dilutive weighted average share options that were not included in the computation of diluted earnings per share because to do so would be anti-dilutive 41,627 44,488

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock Option Awards	The following table presents a summary of the Company’s stock option awards during the three months ended March 31, 2020 (shown as actual): Weighted-Average Weighted- Remaining Average Contractual Term In Aggregate Shares Exercise Price Years Intrinsic Value Outstanding at January 1, 2020 287,990 $ 36.98 6.77 $ 7,722,369 Granted — — — — Less exercised 9,398 $ 16.89 — $ 350,414 Forfeited or expired — — — — Outstanding at March 31, 2020 278,592 $ 37.65 6.57 $ 2,444,876 Expected to vest, assuming a 0.31% annual forfeiture rate (1) 277,770 $ 37.60 6.57 $ 2,444,876 Exercisable at March 31, 2020 147,937 $ 22.53 4.63 $ 2,444,876 __________________________ (1) Forfeiture rate has been calculated and estimated to assume a forfeiture of 3.1% of the options forfeited over 10 years.
Summary of Nonvested Awards	The following table presents a summary of the Company’s nonvested awards during the three months ended March 31, 2020 (shown as actual): Weighted-Average Grant-Date Fair Value Nonvested Shares Shares Per Share Nonvested at January 1, 2020 40,215 $ 53.64 Granted — $ — Less vested — $ — Forfeited or expired — — Nonvested at March 31, 2020 40,215 $ 53.64

Business Segments (Tables)

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The tables below summarize the financial results for each segment based primarily on the number of FTEs and assets within each segment for the three months ended March 31, 2020 and 2019: At or For the Three Months Ended March 31, 2020 Condensed income statement: Home Lending Commercial and Consumer Banking Total Net interest income (1) $ 1,181 $ 16,292 $ 17,473 Provision for loan losses (559) (3,127) (3,686) Noninterest income 5,158 3,733 8,891 Noninterest expense (4,162) (12,022) (16,184) Income before provision for income taxes 1,618 4,876 6,494 Provision for income taxes (331) (996) (1,327) Net income $ 1,287 $ 3,880 $ 5,167 Total average assets for period ended $ 327,441 $ 1,406,594 $ 1,734,035 FTEs 127 317 444 At or For the Three Months Ended March 31, 2019 Condensed income statement: Home Lending Commercial and Consumer Banking Total Net interest income (1) $ 1,071 $ 16,618 $ 17,689 Provision for loan losses (59) (691) (750) Noninterest income 2,419 2,136 4,555 Noninterest expense (3,304) (11,493) (14,797) Income before provision for income taxes 127 6,570 6,697 Provision for income taxes (29) (1,476) (1,505) Net income $ 98 $ 5,094 $ 5,192 Total average assets for period ended $ 239,287 $ 1,375,574 $ 1,614,861 FTEs 112 314 426 ____________________________ (1) Net interest income is the difference between interest earned on assets and the cost of liabilities to fund those assets. Interest earned includes actual interest earned on segment assets and, if the segment has excess liabilities, interest credits for providing funding to the other segment. The cost of liabilities includes interest expense on segment liabilities and, if the segment does not have enough liabilities to fund its assets, a funding charge based on the cost of assigned liabilities to fund segment assets.

Goodwill And Other Intangible_2

Goodwill And Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Other Intangible Assets With Indefinite Lives	The following table summarizes the changes in the Company’s other intangible assets comprised solely of CDI for the year ended December 31, 2019, and the three months ended March 31, 2020. Other Intangible Assets Accumulated Gross CDI Amortization Net CDI Balance, December 31, 2018 $ 7,490 $ (1,273) $ 6,217 Amortization — (760) (760) Balance, December 31, 2019 7,490 (2,033) 5,457 Amortization — (176) (176) Balance, March 31, 2020 $ 7,490 $ (2,209) $ 5,281
Schedule of Amortization Expense	Amortization expense for CDI is expected to be as follows at March 31, 2020: Remainder of 2020 $ 530 2021 691 2022 691 2023 691 2024 621 Thereafter 2,057 Total $ 5,281

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Schedule of noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606	The following table presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the three months ended March 31, 2020 and 2019. (Dollars in thousands): At or For the Three Months Ended March 31, Noninterest income 2020 2019 In-scope of Topic 606: Debit card interchange fees $ 435 $ 423 Deposit service and account maintenance fees 266 271 Noninterest income (in-scope of Topic 606) 701 694 Noninterest income (out-of-scope of Topic 606) 8,190 3,861 Total noninterest income $ 8,891 $ 4,555

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)segmentOfficeitem	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)
Schedule of Accounting Policies [Line Items]
Number of operating segments | segment	2
Federal Home Loan Bank Stock.	$ 10,921		$ 8,045
Cash on hand and deposit balances with FRB	0		0
Marketing and advertising	146	$ 135
Goodwill, Impairment Loss			0
Operating lease right-of-use ("ROU") assets	4,692		5,016
Operating lease liabilities	$ 4,898		$ 5,214
Puget Sound [Member]
Schedule of Accounting Policies [Line Items]
Number of bank branches | item	21
Number of administrative offices that accept deposits | Office	1
Number of loan production offices | item	7
Tri-Cities, Washington [Member]
Schedule of Accounting Policies [Line Items]
Number of loan production offices | item	1

Investments - Available-for-sal

Investments - Available-for-sale securities reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	$ 153,098	$ 125,053
Unrealized gains	3,698	1,347
Unrealized losses	(330)	(343)
Securities available-for-sale, at fair value	156,466	126,057
U.S. agency securities
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	6,991	8,986
Unrealized gains	136	95
Unrealized losses		(15)
Securities available-for-sale, at fair value	7,127	9,066
Corporate securities
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	19,858	10,525
Unrealized gains	144	52
Unrealized losses	(151)	(7)
Securities available-for-sale, at fair value	19,851	10,570
Municipal bonds
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	31,062	20,516
Unrealized gains	475	604
Unrealized losses	(131)
Securities available-for-sale, at fair value	31,406	21,120
Mortgage-backed securities
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	74,503	62,745
Unrealized gains	2,271	405
Unrealized losses	(41)	(300)
Securities available-for-sale, at fair value	76,733	62,850
U.S. Small Business Administration securities
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost	20,684	22,281
Unrealized gains	672	191
Unrealized losses	(7)	(21)
Securities available-for-sale, at fair value	$ 21,349	$ 22,451

Investments - Narrative (Detail

Investments - Narrative (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)security	Dec. 31, 2019USD ($)security
Investments, Debt and Equity Securities [Abstract]
Investments with unrealized losses of less than one year | security	14	13
Investments with unrealized losses of more than one year | security	2	10
Number of securities pledged and held at FHLB | security	7	7
Pledged securities for FHLB	$ 6,900,000	$ 7,400,000
Public deposits	11,400,000	10,300,000
Collateral requirement	4,100,000	4,000,000
Other than temporary impairment losses, investments	$ 0	$ 0

Investments - Investments with

Investments - Investments with Unrealized Losses Policy (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months	$ 24,547	$ 21,710
Unrealized loss position, Fair Value, 12 Months or Longer	2,411	11,459
Unrealized loss position, Fair Value	26,958	33,169
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months	(308)	(197)
Unrealized loss position, Unrealized losses, 12 Months or Longer	(22)	(146)
Unrealized losses	(330)	(343)
U.S. agency securities
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months		2,977
Unrealized loss position, Fair Value, 12 Months or Longer		0
Unrealized loss position, Fair Value		2,977
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months		(15)
Unrealized loss position, Unrealized losses, 12 Months or Longer		0
Unrealized losses		(15)
Corporate securities
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months	7,729	1,993
Unrealized loss position, Fair Value, 12 Months or Longer	0	0
Unrealized loss position, Fair Value	7,729	1,993
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months	(151)	(7)
Unrealized loss position, Unrealized losses, 12 Months or Longer	0	0
Unrealized losses	(151)	(7)
Municipal bonds
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months	10,285
Unrealized loss position, Fair Value, 12 Months or Longer	0
Unrealized loss position, Fair Value	10,285
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months	(131)
Unrealized loss position, Unrealized losses, 12 Months or Longer	0
Unrealized losses	(131)
Mortgage-backed securities
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months	4,578	12,345
Unrealized loss position, Fair Value, 12 Months or Longer	2,411	11,459
Unrealized loss position, Fair Value	6,989	23,804
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months	(19)	(154)
Unrealized loss position, Unrealized losses, 12 Months or Longer	(22)	(146)
Unrealized losses	(41)	(300)
U.S. Small Business Administration securities
Fair Value
Unrealized loss position, Fair Value, Less than 12 Months	1,955	4,395
Unrealized loss position, Fair Value, 12 Months or Longer	0	0
Unrealized loss position, Fair Value	1,955	4,395
Unrealized Losses
Unrealized loss position, Unrealized losses, Less than 12 Months	(7)	(21)
Unrealized loss position, Unrealized losses, 12 Months or Longer	0	0
Unrealized losses	$ (7)	$ (21)

Investments - Available for Sal

Investments - Available for Sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized Cost
Total	$ 153,098	$ 125,053
Fair Value
Total	156,466	126,057
U.S. agency securities
Amortized Cost
Due after one year through five years	992	996
Due after five years through ten years	3,999	3,997
Due after ten years	2,000	3,993
Subtotal	6,991	8,986
Total	6,991	8,986
Fair Value
Due after one year through five years	1,068	1,036
Due after five years through ten years	4,041	4,027
Due after ten years	2,018	4,003
Subtotal	7,127	9,066
Total	7,127	9,066
Corporate securities
Amortized Cost
Due in one year or less	5,024	5,034
Due after one year through five years	5,854	3,491
Due after five years through ten years	8,980	2,000
Subtotal	19,858	10,525
Total	19,858	10,525
Fair Value
Due in one year or less	5,003	5,044
Due after one year through five years	5,763	3,532
Due after five years through ten years	9,085	1,994
Subtotal	19,851	10,570
Total	19,851	10,570
Municipal bonds
Amortized Cost
Due after one year through five years	3,768	3,774
Due after five years through ten years	5,215	3,162
Due after ten years	22,079	13,580
Subtotal	31,062	20,516
Total	31,062	20,516
Fair Value
Due after one year through five years	3,680	3,833
Due after five years through ten years	5,301	3,307
Due after ten years	22,425	13,980
Subtotal	31,406	21,120
Total	31,406	21,120
Mortgage-backed securities
Amortized Cost
Mortgage-backed securities	74,503	62,745
Total	74,503	62,745
Fair Value
Mortgage-backed securities	76,733	62,850
Total	76,733	62,850
Federal National Mortgage Association ("FNMA")
Amortized Cost
Mortgage-backed securities	51,139	42,131
Fair Value
Mortgage-backed securities	52,933	42,333
Federal Home Loan Mortgage Corporation ("FHLMC")
Amortized Cost
Mortgage-backed securities	17,698	15,250
Fair Value
Mortgage-backed securities	18,083	15,179
Government National Mortgage Association ("GNMA")
Amortized Cost
Mortgage-backed securities	5,666	5,364
Fair Value
Mortgage-backed securities	5,717	5,338
U.S. Small Business Administration securities
Amortized Cost
Due after one year through five years	1,186	1,546
Due after five years through ten years	10,467	11,500
Due after ten years	9,031	9,235
Subtotal	20,684	22,281
Total	20,684	22,281
Fair Value
Due after one year through five years	1,210	1,555
Due after five years through ten years	10,787	11,598
Due after ten years	9,352	9,298
Subtotal	21,349	22,451
Total	$ 21,349	$ 22,451

Investments - Gains and Losses

Investments - Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2008
Debt and Equity Securities, FV-NI [Line Items]
Gross Gains	$ 0	$ 0
Gross Losses	0	0
Proceeds	0	$ 0
Gain on sale of equity investment securities	$ 1,500
Class B Common Stock | Bank | Visa, Inc.
Debt and Equity Securities, FV-NI [Line Items]
Number of shares received in an IPO			7,158

Loans Receivable and Allowanc_3

Loans Receivable and Allowance For Loan Losses - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,411,874	$ 1,351,893	$ 1,297,070
Allowance for loan losses	(16,872)	(13,229)
Deferred costs and fees, net	(3,425)	(3,273)
Premiums on purchased loans, net	1,493	955
Total loans receivable	1,393,070	1,336,346
REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	862,676	824,040	833,415
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	220,509	210,749
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	168,658	179,654
Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,503	38,167
One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	305,436	261,539
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	130,570	133,931
CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	335,095	326,210	284,416
Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	261,566	254,691
Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,473	67,179
Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,056	4,340
COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	214,103	201,643	$ 179,239
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	149,086	140,531
Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	65,017	61,112
REAL ESTATE LOANS | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	862,676	824,040
REAL ESTATE LOANS | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	220,509	210,749
REAL ESTATE LOANS | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	168,658	179,654
REAL ESTATE LOANS | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,503	38,167
REAL ESTATE LOANS | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	305,436	261,539
REAL ESTATE LOANS | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	130,570	133,931
CONSUMER LOANS | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	335,095	326,210
CONSUMER LOANS | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	261,566	254,691
CONSUMER LOANS | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,473	67,179
CONSUMER LOANS | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,056	4,340
COMMERCIAL BUSINESS LOANS | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	214,103	201,643
COMMERCIAL BUSINESS LOANS | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	149,086	140,531
COMMERCIAL BUSINESS LOANS | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 65,017	$ 61,112

Loans Receivable and Allowanc_4

Loans Receivable and Allowance For Loan Losses - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)divisionsegmentitem	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan portfolio segments | segment	3
Number of warehouse lending divisions | division	2
Loans that qualify as collateral for FHLB advances	$ 706.4	$ 646.1
Loans that qualify as collateral for Federal Reserve Bank lines of credit	$ 327.4	$ 318.8
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of units in real estate property | item	5

Loans Receivable and Allowanc_5

Loans Receivable and Allowance For Loan Losses - Allowance for Loan Losses by Loan Categories (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
ALLOWANCE FOR LOAN LOSSES
Beginning balance	$ 13,229	$ 12,349
Provision (recapture) for loan losses	3,686	750
Charge-offs	(381)	(1,402)
Recoveries	338	148
Net recoveries (charge-offs)	(43)	(1,254)
Loans individually evaluated for impairment	246	333
Loans collectively evaluated for impairment	16,626	11,512
Ending balance	16,872	11,845
LOANS RECEIVABLE
Loans individually evaluated for impairment	3,192	2,044
Loans collectively evaluated for impairment	1,408,682	1,295,026
Total loans receivable	1,411,874	1,297,070	$ 1,351,893
REAL ESTATE LOANS.
ALLOWANCE FOR LOAN LOSSES
Beginning balance	6,206	5,761
Provision (recapture) for loan losses	1,019	24
Charge-offs	0
Recoveries	18
Net recoveries (charge-offs)	18
Loans individually evaluated for impairment	15	173
Loans collectively evaluated for impairment	7,228	5,612
Ending balance	7,243	5,785
LOANS RECEIVABLE
Loans individually evaluated for impairment	2,528	1,156
Loans collectively evaluated for impairment	860,148	832,259
Total loans receivable	862,676	833,415	824,040
CONSUMER LOANS.
ALLOWANCE FOR LOAN LOSSES
Beginning balance	3,766	3,351
Provision (recapture) for loan losses	660	114
Charge-offs	(370)	(250)
Recoveries	143	148
Net recoveries (charge-offs)	(227)	(102)
Loans individually evaluated for impairment	231	160
Loans collectively evaluated for impairment	3,968	3,203
Ending balance	4,199	3,363
LOANS RECEIVABLE
Loans individually evaluated for impairment	664	457
Loans collectively evaluated for impairment	334,431	283,959
Total loans receivable	335,095	284,416	326,210
COMMERCIAL BUSINESS LOANS.
ALLOWANCE FOR LOAN LOSSES
Beginning balance	3,254	3,191
Provision (recapture) for loan losses	824	691
Charge-offs	(11)	(1,152)
Recoveries	177
Net recoveries (charge-offs)	166	(1,152)
Loans individually evaluated for impairment	0
Loans collectively evaluated for impairment	4,244	2,730
Ending balance	4,244	2,730
LOANS RECEIVABLE
Loans individually evaluated for impairment	0	431
Loans collectively evaluated for impairment	214,103	178,808
Total loans receivable	214,103	179,239	$ 201,643
Unallocated Financing Receivables [Member]
ALLOWANCE FOR LOAN LOSSES
Beginning balance	3	46
Provision (recapture) for loan losses	1,183	(79)
Charge-offs	0
Recoveries	0
Net recoveries (charge-offs)	0
Loans individually evaluated for impairment	0
Loans collectively evaluated for impairment	1,186	(33)
Ending balance	1,186	$ (33)
LOANS RECEIVABLE
Loans individually evaluated for impairment	0
Loans collectively evaluated for impairment	0
Total loans receivable	$ 0

Loans Receivable and Allowanc_6

Loans Receivable and Allowance For Loan Losses - Aging Analysis of Past Due Loans) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020USD ($)loan	Dec. 31, 2019USD ($)loan	Mar. 31, 2019USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 5,293	$ 4,159
Current	1,406,581	1,347,734
Total loans receivable	1,411,874	1,351,893	$ 1,297,070
REAL ESTATE LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	862,676	824,040	833,415
REAL ESTATE LOANS. | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	862,676	824,040
Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,028	2,985
Current	858,648	821,055
Total loans receivable	862,676	824,040
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	220,509	210,749
Total loans receivable	220,509	210,749
Commercial | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	220,509	210,749
Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	533
Current	168,658	179,121
Total loans receivable	168,658	179,654
Construction and development | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	168,658	179,654
Home equity.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	713	294
Current	36,790	37,873
Total loans receivable	37,503	38,167
Home equity. | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	37,503	38,167
One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,315	2,158
Current	302,121	259,381
Total loans receivable	305,436	261,539
One-to-four-family | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	305,436	261,539
Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	130,570	133,931
Total loans receivable	130,570	133,931
Multi-family | REAL ESTATE LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	130,570	133,931
CONSUMER LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,265	1,174
Current	333,830	325,036
Total loans receivable	335,095	326,210	284,416
CONSUMER LOANS. | CONSUMER LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	335,095	326,210
Indirect home improvement
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,091	1,066
Current	260,475	253,625
Total loans receivable	261,566	254,691
Indirect home improvement | CONSUMER LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	261,566	254,691
Marine
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	138	15
Current	69,335	67,164
Total loans receivable	69,473	67,179
Marine | CONSUMER LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	69,473	67,179
Other consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	36	93
Current	4,020	4,247
Total loans receivable	4,056	4,340
Other consumer loans | CONSUMER LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	4,056	4,340
COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	214,103	201,643
Total loans receivable	214,103	201,643	$ 179,239
COMMERCIAL BUSINESS LOANS. | COMMERCIAL BUSINESS LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	214,103	201,643
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	149,086	140,531
Total loans receivable	149,086	140,531
Commercial and industrial | COMMERCIAL BUSINESS LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	149,086	140,531
Warehouse lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	65,017	61,112
Total loans receivable	65,017	61,112
Warehouse lending | COMMERCIAL BUSINESS LOANS
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	65,017	61,112
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,097	2,314
30-59 Days Past Due | Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,407	1,536
30-59 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due | Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	533
30-59 Days Past Due | Home equity.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	204	109
30-59 Days Past Due | One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,203	894
30-59 Days Past Due | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due | CONSUMER LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	690	778
30-59 Days Past Due | Indirect home improvement
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	654	692
30-59 Days Past Due | Marine
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	14	15
30-59 Days Past Due | Other consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	22	71
30-59 Days Past Due | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due | Warehouse lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	567	343
60-89 Days Past Due | Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	289	114
60-89 Days Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Home equity.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	289	0
60-89 Days Past Due | One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	114
60-89 Days Past Due | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | CONSUMER LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	278	229
60-89 Days Past Due | Indirect home improvement
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	266	227
60-89 Days Past Due | Marine
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Other consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12	2
60-89 Days Past Due | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Warehouse lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,629	$ 1,502
Number Of Loans Accruing Interest | loan	0	0
90 Days or More Past Due | Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,332	$ 1,335
90 Days or More Past Due | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due | Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due | Home equity.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	220	185
90 Days or More Past Due | One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,112	1,150
90 Days or More Past Due | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due | CONSUMER LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	297	167
90 Days or More Past Due | Indirect home improvement
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	171	147
90 Days or More Past Due | Marine
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	124	0
90 Days or More Past Due | Other consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	20
90 Days or More Past Due | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
90 Days or More Past Due | Warehouse lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Non-Accrual
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,192	3,033
Non-Accrual | Total real estate loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,528	2,540
Non-Accrual | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,083	1,086
Non-Accrual | Construction and development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Non-Accrual | Home equity.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	220	190
Non-Accrual | One-to-four-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,225	1,264
Non-Accrual | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Non-Accrual | CONSUMER LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	664	493
Non-Accrual | Indirect home improvement
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	533	468
Non-Accrual | Marine
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	124	0
Non-Accrual | Other consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7	25
Non-Accrual | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Non-Accrual | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Non-Accrual | Warehouse lending
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Loans Receivable and Allowanc_7

Loans Receivable and Allowance For Loan Losses - Financing Receivables, Related Allowance Recorded and No Related Allowance Recorder (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with no related allowance recorded	$ 2,563		$ 2,685
Unpaid Principal Balance, with related allowance recorded	720		537
Impaired Financing Receivable, Unpaid Principal Balance, Total	3,283		3,222
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with no related allowance recorded	2,473		2,592
Recorded Investment, with related allowance recorded	719		536
Recorded Investment	3,192		3,128
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with no related allowance recorded	0		0
Related Allowance, with related allowance recorded	246		182
Related Allowance	246		182
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	2,539	$ 1,528
Average Recorded Investment, with related allowance recorded	650	2,767
Impaired Financing Receivable, Average Recorded Investment	3,189	4,295
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	13	15
Interest Income Recognized, with related allowance recorded	13	16
Interest Income Recognized	26	31
Commercial
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with no related allowance recorded	1,094		1,097
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with no related allowance recorded	1,083		1,086
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with no related allowance recorded	0		0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	1,084	0
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	8	0
Home equity.
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with no related allowance recorded	271		278
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with no related allowance recorded	220		225
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with no related allowance recorded	0		0
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	220	267
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	0	0
One-to-four-family
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with no related allowance recorded	1,193		1,293
Unpaid Principal Balance, with related allowance recorded	61		61
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with no related allowance recorded	1,165		1,264
Recorded Investment, with related allowance recorded	60		60
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with no related allowance recorded	0		0
Related Allowance, with related allowance recorded	15		15
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	1,230	830
Average Recorded Investment, with related allowance recorded	60	1,156
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	5	15
Interest Income Recognized, with related allowance recorded	0	0
Indirect home improvement
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with related allowance recorded	533		468
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with related allowance recorded	533		468
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with related allowance recorded	187		164
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with related allowance recorded	548	441
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with related allowance recorded	13	9
Marine
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with related allowance recorded	124
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with related allowance recorded	124
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with related allowance recorded	43
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with related allowance recorded	41	13
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with related allowance recorded	0	0
Other consumer loans
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, with no related allowance recorded	5		17
Unpaid Principal Balance, with related allowance recorded	2		8
Impaired Financing Receivable, Recorded Investment [Abstract]
Recorded Investment, with no related allowance recorded	5		17
Recorded Investment, with related allowance recorded	2		8
Impaired Financing Receivable Related Allowance Abstract
Related Allowance, with no related allowance recorded	0		0
Related Allowance, with related allowance recorded	1		$ 3
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	5	0
Average Recorded Investment, with related allowance recorded	1	5
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	0	0
Interest Income Recognized, with related allowance recorded	0	0
Commercial and industrial
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, with no related allowance recorded	0	431
Average Recorded Investment, with related allowance recorded	0	1,152
Impaired Financing Receivable, Interest Income [Abstract]
Interest Income Recognized, with no related allowance recorded	0	0
Interest Income Recognized, with related allowance recorded	$ 0	$ 7

Loans Receivable and Allowanc_8

Loans Receivable and Allowance For Loan Losses - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,411,874	$ 1,351,893	$ 1,297,070
REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	862,676	824,040	833,415
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	220,509	210,749
Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	168,658	179,654
Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,503	38,167
One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	305,436	261,539
Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	130,570	133,931
CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	335,095	326,210	284,416
Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	261,566	254,691
Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,473	67,179
Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,056	4,340
COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	214,103	201,643	$ 179,239
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	149,086	140,531
Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	65,017	61,112
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,306,791	1,317,980
Pass | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	805,762	806,126
Pass | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	168,015	203,703
Pass | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	165,848	177,109
Pass | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,283	37,942
Pass | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	304,046	259,580
Pass | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	130,570	127,792
Pass | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	334,431	325,717
Pass | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	261,033	254,223
Pass | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	69,349	67,179
Pass | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,049	4,315
Pass | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	166,598	186,137
Pass | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	105,396	125,025
Pass | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	61,202	61,112
Watch
Financing Receivable, Recorded Investment [Line Items]
Total loans	85,711	22,028
Watch | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	49,777	11,593
Watch | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	46,802	2,274
Watch | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,810	2,545
Watch | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Watch | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	165	635
Watch | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	6,139
Watch | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Watch | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Watch | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Watch | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Watch | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	35,934	10,435
Watch | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	32,119	10,435
Watch | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,815	0
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,733	5,223
Special Mention | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,675	3,781
Special Mention | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,675	3,686
Special Mention | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	35
Special Mention | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	60
Special Mention | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,058	1,442
Special Mention | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,058	1,442
Special Mention | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,639	6,662
Substandard | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,462	2,540
Substandard | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,017	1,086
Substandard | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Substandard | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	220	190
Substandard | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,225	1,264
Substandard | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Substandard | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	664	493
Substandard | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	533	468
Substandard | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	124	0
Substandard | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	7	25
Substandard | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,513	3,629
Substandard | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,513	3,629
Substandard | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | REAL ESTATE LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Construction and development
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Home equity.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | One-to-four-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | CONSUMER LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Indirect home improvement
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Marine
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Other consumer loans
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | COMMERCIAL BUSINESS LOANS.
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss | Warehouse lending
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Servicing Rights - Narrative (D

Servicing Rights - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractually specified servicing fees, late fees, and other ancillary fees	$ 977,000	$ 802,000
Mortgage, commercial and consumer servicing rights
Off-balance Sheet Risks, Disclosure Information [Line Items]
The unpaid principal balances of mortgage loans serviced	1,490,000,000		$ 1,460,000,000
Mortgage servicing rights
Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair market value of servicing rights' assets	$ 10,900,000		$ 13,300,000

Servicing Rights - Servicing Ri

Servicing Rights - Servicing Rights (Details) - Mortgage servicing rights - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 11,560	$ 10,429
Additions	1,185	844
Servicing rights amortized	(1,605)	(639)
Impairment on servicing rights	(514)	(23)
Ending balance	$ 10,626	$ 10,611

Servicing Rights - Valuation As

Servicing Rights - Valuation Assumptions (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Off-balance Sheet Risks, Disclosure Information [Line Items]
Weighted average discount rate	9.10%	9.70%
Conditional prepayment rate ("CPR")	23.30%	17.10%
Weighted average life in years	3 years 10 months 24 days	5 years 1 month 6 days
Mortgage, commercial and consumer servicing rights
Off-balance Sheet Risks, Disclosure Information [Line Items]
Weighted average discount rate	9.10%	9.70%
Conditional prepayment rate ("CPR")	23.30%	17.10%

Servicing Rights - Changes in V

Servicing Rights - Changes in Valuation Assumptions (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Off-balance Sheet Risks, Disclosure Information [Line Items]
Conditional prepayment rate	23.30%	17.10%
Discount rate	9.10%	9.70%
Mortgage, commercial and consumer servicing rights
Off-balance Sheet Risks, Disclosure Information [Line Items]
Aggregate portfolio principal balance	$ 1,490,874	$ 1,463,732
Weighted average rate of note	4.20%	4.20%
Conditional prepayment rate	23.30%	17.10%
Conditional prepayment rate, 0.5% Adverse Change	31.90%	24.60%
Conditional prepayment rate, 1.0% Adverse Change	36.40%	32.50%
Fair value MSR	$ 10,855	$ 13,255
Fair value MSR, 0.5% Adverse Change	8,638	10,582
Fair value of MSR, 1.0% Adverse Change	$ 7,796	$ 8,674
Percentage of MSR	0.70%	0.90%
Percentage of MSR, 0.5% Adverse Change	0.60%	0.70%
Percentage of MSR, 1.0% Adverse Change	0.50%	0.60%
Discount rate	9.10%	9.70%
Discount rate, 0.5% Adverse Change	9.60%	10.20%
Discount rate, 1.0% Adverse Change	10.10%	10.70%
Fair value MSR, 0.5% Adverse Change	$ 10,706	$ 13,037
Fair value MSR, 1.0% Adverse Change	$ 10,561	$ 12,826
Percentage of MSR, 0.5% Adverse Change	0.70%	0.90%
Percentage of MSR, 1.0% Adverse Change	0.70%	0.90%

Derivatives (Details)

Derivatives (Details) - USD ($)	Apr. 01, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)		$ 825,000		$ 0
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net		1,000	$ 0
Derivative instruments, gain (loss) on sale of loans		1,700,000	$ 299,000
Forecast
Derivative [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 188,000
Number of months	12 months
Designated as Hedging Instrument | Interest rate swaps | Cash Flow Hedges
Derivative [Line Items]
Notional		60,000,000
Asset		0
Liability		1,051,000
Margin collateral		910,000		0
Not Designated as Hedging Instrument | Interest rate lock commitments with customers
Derivative [Line Items]
Notional		207,564,000		33,914,000
Asset		4,291,000		557,000
Liability		0		0
Not Designated as Hedging Instrument | Individual forward sale commitments with investors
Derivative [Line Items]
Notional		60,368,000		43,752,000
Asset		0		0
Liability		181,000		195,000
Not Designated as Hedging Instrument | Mortgage-backed securities
Derivative [Line Items]
Notional		248,000,000		46,000,000
Asset		0		0
Liability		3,723,000		8,000
Margin collateral		$ 5,300,000		$ 1,200,000

Leases (Details)

Leases (Details) - lease	Jan. 01, 2019	Jun. 30, 2020	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Options to extend	true		true
Renewal term	5 years		5 years
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms	1 month
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms	7 years 6 months		60 months
Forecast
Lessee, Lease, Description [Line Items]
Number of leases secured		1

Leases - Components of lease co

Leases - Components of lease cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lease cost:
Operating lease cost	$ 343	$ 308
Short-term lease cost	8	46
Total lease cost	351	354
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases	$ 336	$ 334
Weighted average remaining lease term- operating leases	5 years 2 months 12 days	5 years 9 months 18 days
Weighted average discount rate- operating leases	2.97%	3.08%

Leases - Maturities of operatin

Leases - Maturities of operating lease liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Maturities of operating lease liabilities
Remainder of 2020	$ 944
2021	1,169
2022	1,065
2023	674
2024	614
Thereafter	884
Total lease payments	5,350
Less imputed interest	(452)
Operating lease liabilities	$ 4,898	$ 5,214

Other Real Estate Owned - Activ

Other Real Estate Owned - Activity related to OREO (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other Real Estate [Roll Forward]
Beginning balance	$ 168	$ 689
Capitalized costs		77
Gross proceeds from sale of OREO	(76)	(684)
Gain on sale of OREO	(2)	85
Ending balance	$ 90	$ 167

Other Real Estate Owned - Narra

Other Real Estate Owned - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)property	Mar. 31, 2019USD ($)property
Banking and Thrift [Abstract]
OREO properties	$ 90,000	$ 0
Number of other real estate owned properties | property	1	2
Holding costs	$ 0	$ 4,000
Mortgage loans in process of foreclosure	$ 1,200,000

Deposits - Deposit Liabilities

Deposits - Deposit Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Banking and Thrift [Abstract]
Noninterest-bearing checking	$ 267,966	$ 260,131
Interest-bearing checking	208,952	177,972
Savings	123,052	118,845
Money market	303,405	270,489
Certificates of deposit less than $100,000	263,787	277,988
Certificates of deposit of $100,000 through $250,000	176,322	181,402
Certificates of deposit of $250,000 and over	85,185	92,110
Escrow accounts related to mortgages serviced	17,600	13,471
Total deposits	1,446,269	1,392,408
Federal Reserve Bank required deposit reserves	$ 0	$ 0

Deposits - Maturities of Time D

Deposits - Maturities of Time Deposits for Future Periods (Details) $ in Thousands	Mar. 31, 2020USD ($)
Banking and Thrift [Abstract]
Maturing in 2020	$ 273,650
Maturing in 2021	152,427
Maturing in 2022	63,458
Maturing in 2023	15,111
Maturing in 2024	17,505
Thereafter	3,143
Total	$ 525,294

Deposits - Interest Expense by

Deposits - Interest Expense by Deposit Category (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Banking and Thrift [Abstract]
Interest-bearing checking	$ 136	$ 196
Savings and money market	826	763
Certificates of deposit	2,845	2,751
Total	$ 3,807	$ 3,710

Commitments and Contingencies -

Commitments and Contingencies - Commitment (Details) - Commitments to Extend Credit - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	$ 505,142	$ 312,272
REAL ESTATE LOANS.
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	373,626	183,477
Commercial
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	1,332	247
Construction and development
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	106,862	95,031
One-to-four-family
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	218,244	39,697
Home equity.
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	46,558	47,880
Commercial/Multi-family
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	630	622
CONSUMER LOANS.
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	22,331	22,176
COMMERCIAL BUSINESS LOANS.
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	109,185	106,619
Commercial and industrial
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	82,202	72,731
Warehouse lending
Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments	$ 26,983	$ 33,888

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)action	Dec. 31, 2019USD ($)
Loss Contingencies [Line Items]
Amount of loans sold to FHLB	$ 60,700,000
Federal Home Loan Bank, First Loss Account Established	938,000
Bank recourse obligation	$ 811,000
Bank recourse obligation, percentage of loans outstanding	1.30%
Reserve as a percentage of outstanding CE	10.00%
Reserve for loans sold	$ 272,000
Outstanding Delinquencies On Loans Sold to Federal Home Loan Bank	$ 482,000	$ 0
Severance agreement, period of base compensation disbursed as lump sum payment (in months)	24 months
Change of control agreement, notice required to cancel agreement (in months)	24 months
Change of control agreement, executive payment, period following change in control (in months)	12 months
Pending material legal actions | action	0
Maximum
Loss Contingencies [Line Items]
Change of control agreement, executive payment, period prior to change in control (in months)	6 months
Change of control agreement, period of base compensation disbursed as lump sum payment (in months)	12 months
Commitments to Extend Credit
Loss Contingencies [Line Items]
Reserve for estimated losses	$ 312,000	293,000
Guarantee on loans sold
Loss Contingencies [Line Items]
Reserve for estimated losses	$ 1,300,000	$ 1,200,000

Commitments and Contingencies_3

Commitments and Contingencies (Narrative) (Details)	Mar. 31, 2020USD ($)action	Dec. 31, 2019USD ($)
Loss Contingencies [Line Items]
Pending material legal actions | action	0
Commitments to Extend Credit
Loss Contingencies [Line Items]
Reserve for estimated losses	$ 312,000	$ 293,000
Guarantee on loans sold
Loss Contingencies [Line Items]
Reserve for estimated losses	$ 1,300,000	$ 1,200,000

Fair Value Measurements - Avail

Fair Value Measurements - Available for Sale Securities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 276,389	$ 196,313
Total liabilities measured at fair value	(3,904)	(203)
Securities available-for-sale | U.S. agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,127	9,066
Securities available-for-sale | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	19,851	10,570
Securities available-for-sale | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	31,406	21,120
Securities available-for-sale | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	76,733	62,850
Securities available-for-sale | U.S. Small Business Administration securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	21,349	22,451
Securities available-for-sale | Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	115,632	69,699
Derivative | Interest rate lock commitments with customers
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,291	557
Derivative | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	(1,051)
Derivative | Individual forward sale commitments with investors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	(3,904)	(203)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Total liabilities measured at fair value	0	0
Level 1 | Securities available-for-sale | U.S. agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Securities available-for-sale | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Securities available-for-sale | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Securities available-for-sale | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Securities available-for-sale | U.S. Small Business Administration securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Securities available-for-sale | Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Derivative | Interest rate lock commitments with customers
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Derivative | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	0
Level 1 | Derivative | Individual forward sale commitments with investors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	270,927	194,594
Total liabilities measured at fair value	(3,723)	(8)
Level 2 | Securities available-for-sale | U.S. agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	7,127	9,066
Level 2 | Securities available-for-sale | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	18,815	9,546
Level 2 | Securities available-for-sale | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	31,271	20,982
Level 2 | Securities available-for-sale | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	76,733	62,850
Level 2 | Securities available-for-sale | U.S. Small Business Administration securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	21,349	22,451
Level 2 | Securities available-for-sale | Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	115,632	69,699
Level 2 | Derivative | Interest rate lock commitments with customers
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 2 | Derivative | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	(1,051)
Level 2 | Derivative | Individual forward sale commitments with investors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	(3,723)	(8)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,462	1,719
Total liabilities measured at fair value	(181)	(195)
Level 3 | Securities available-for-sale | U.S. agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Securities available-for-sale | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,036	1,024
Level 3 | Securities available-for-sale | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	135	138
Level 3 | Securities available-for-sale | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Securities available-for-sale | U.S. Small Business Administration securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Securities available-for-sale | Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Derivative | Interest rate lock commitments with customers
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,291	557
Level 3 | Derivative | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	0
Level 3 | Derivative | Individual forward sale commitments with investors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured at fair value	$ (181)	$ (195)

Fair Value Measurements - Impai

Fair Value Measurements - Impaired Loans and OREO (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO	$ 90	$ 168
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	3,192	3,128
OREO	90	168
Servicing Rights	10,855	13,255
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
OREO	0	0
Servicing Rights	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	0	0
OREO	0	0
Servicing Rights	0	0
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans	3,192	3,128
OREO	90	168
Servicing Rights	$ 10,855	$ 13,255

Fair Value Measurements - Disco

Fair Value Measurements - Discount Rate (Details) - item	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Measurements, Recurring | Interest rate lock commitments with customers
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	fsbw:MeasurementInputPullThroughExpectationsMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	fsbw:QuotedMarketPricesMember
Fair Value, Measurements, Recurring | Individual forward sale commitments with investors
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	fsbw:MeasurementInputPullThroughExpectationsMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	fsbw:QuotedMarketPricesMember
Fair Value, Measurements, Recurring | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	us-gaap:MeasurementInputDiscountRateMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Fair Value, Measurements, Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	us-gaap:MeasurementInputDiscountRateMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Fair Value, Measurements, Nonrecurring | Impaired Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	fsbw:MeasurementInputDiscountAppliedToObtainedAppraisalMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	fsbw:MeasurementInputPullThroughExpectationsMember
Fair Value, Measurements, Nonrecurring | Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	fsbw:MeasurementInputDiscountAppliedToObtainedAppraisalMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	fsbw:FairValueOfCollateralMember
Fair Value, Measurements, Nonrecurring | Servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale, Measurement Input [Extensible List]	fsbw:PrepaymentSpeedsMember
Debt Securities, Available-for-sale, Valuation Technique [Extensible List]	fsbw:IndustrySourcesMember
Level 3 | Fair Value, Measurements, Recurring | Interest rate lock commitments with customers | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.80	0.80
Level 3 | Fair Value, Measurements, Recurring | Interest rate lock commitments with customers | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.99	0.99
Level 3 | Fair Value, Measurements, Recurring | Interest rate lock commitments with customers | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.915	0.945
Level 3 | Fair Value, Measurements, Recurring | Individual forward sale commitments with investors | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.80	0.80
Level 3 | Fair Value, Measurements, Recurring | Individual forward sale commitments with investors | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.99	0.99
Level 3 | Fair Value, Measurements, Recurring | Individual forward sale commitments with investors | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.915	0.945
Level 3 | Fair Value, Measurements, Recurring | Corporate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.016	0.016
Level 3 | Fair Value, Measurements, Recurring | Corporate securities | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.016	0.021
Level 3 | Fair Value, Measurements, Recurring | Municipal bonds | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.025	0.025
Level 3 | Fair Value, Measurements, Recurring | Municipal bonds | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.026	0.026
Level 3 | Fair Value, Measurements, Recurring | Municipal bonds | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.026	0.034
Level 3 | Fair Value, Measurements, Nonrecurring | Impaired Loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.10	0.10
Level 3 | Fair Value, Measurements, Nonrecurring | Impaired Loans | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.100	0.100
Level 3 | Fair Value, Measurements, Nonrecurring | Other Real Estate Owned | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.10	0.10
Level 3 | Fair Value, Measurements, Nonrecurring | Other Real Estate Owned | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.100	0.100
Level 3 | Fair Value, Measurements, Nonrecurring | Servicing rights | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0	0
Level 3 | Fair Value, Measurements, Nonrecurring | Servicing rights | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.50	0.50
Level 3 | Fair Value, Measurements, Nonrecurring | Servicing rights | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement inputs (as a percent)	0.233	0.171

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Level 3 on recurring basis (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest rate lock commitments with customers
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 557	$ 503
Purchases and Issuances	7,411	1,931
Sales and Settlements	(3,677)	(1,748)
Transfers In		0
Ending Balance	4,291	686
Net change in fair value for gains/(losses) relating to items held at end of period included in income	$ 3,734	183
Net change in fair value for gains/(losses) relating to items held at end of period included in other comprehensive		$ 0
Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Income [Extensible List]	Noninterest Income, Other	Noninterest Income, Other
Individual forward sale commitments with investors
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ (195)	$ (34)
Purchases and Issuances	(531)	(162)
Sales and Settlements	545	100
Ending Balance	(181)	(96)
Net change in fair value for gains/(losses) relating to items held at end of period included in income	$ 14	$ (62)
Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Income [Extensible List]	Noninterest Income, Other	Noninterest Income, Other
Securities available-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,162
Purchases and Issuances	12
Sales and Settlements	(3)
Ending Balance	1,171
Net change in fair value for gains/(losses) relating to items held at end of period included in other comprehensive	$ 12

Fair Value Measurements - Fai_2

Fair Value Measurements - Fair Value By Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial Assets
Certificates of deposit at other financial institutions	$ 17,926	$ 20,902
Securities available-for-sale, at fair value	156,466	126,057
Carrying Amount | Level 1
Financial Assets
Cash and cash equivalents	48,921	45,778
Certificates of deposit at other financial institutions	17,926	20,902
Carrying Amount | Level 2
Financial Assets
Securities available-for-sale, at fair value	155,295	124,895
Loans held for sale, at fair value	115,632	69,699
FHLB stock, at cost	10,921	8,045
Accrued interest receivable	6,326	5,908
Financial Liabilities
Deposits	1,446,269	1,392,408
Borrowings	159,114	84,864
Subordinated note, net	9,890	9,885
Accrued interest payable	293	273
Paired off commitments with investors, liability	112	71
Interest rate swaps	1,051	0
Individual forward sale commitments with investors, financial liability	3,723	8
Carrying Amount | Level 3
Financial Assets
Securities available-for-sale, at fair value	1,171	1,162
Loans receivable, gross	1,411,874	1,351,893
Servicing rights, held at lower of cost or fair value	10,626	11,560
Fair value interest rate locks with customers	4,291	557
Financial Liabilities
Individual forward sale commitments with investors, financial liability	181	195
Fair Value | Level 1
Financial Assets
Cash and cash equivalents	48,921	45,778
Certificates of deposit at other financial institutions	17,926	20,902
Fair Value | Level 2
Financial Assets
Securities available-for-sale, at fair value	155,295	124,895
Loans held for sale, at fair value	115,632	69,699
FHLB stock, at cost	10,921	8,045
Accrued interest receivable	6,326	5,908
Financial Liabilities
Deposits	1,452,760	1,385,658
Borrowings	163,294	85,268
Subordinated note, net	10,599	10,599
Accrued interest payable	293	273
Paired off commitments with investors, liability	112	71
Interest rate swaps	1,051	0
Individual forward sale commitments with investors, financial liability	3,723	8
Fair Value | Level 3
Financial Assets
Securities available-for-sale, at fair value	1,171	1,162
Loans receivable, gross	1,413,954	1,377,408
Servicing rights, held at lower of cost or fair value	10,855	13,255
Fair value interest rate locks with customers	4,291	557
Financial Liabilities
Individual forward sale commitments with investors, financial liability	$ 181	$ 195

Employee Benefits - Narrative (

Employee Benefits - Narrative (Details) - USD ($)	Jul. 09, 2012	Jan. 02, 2012	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Compensation and Retirement Disclosure [Abstract]
Number of hours of service required for participation in ESOP, per first 12 month period (in hours)		1000 hours
Vesting percentage after requisite service period is met (as a percent)		100.00%
Requisite service period (in years)		2 years
Employee stock ownership plan (ESOP), requisite service period and 12 months		1000 hours
Employee stock ownership plan (ESOP), debt structure, employer loan, amount	$ 2,600,000
Employee stock ownership plan shares purchased	259,210
Employee stock ownership plan (ESOP), weighted average purchase price of shares purchased (in dollars per share)	$ 10.17
Amortization period of ESOP loan	10 years
Employee stock ownership plan (ESOP), debt structure, employer loan, interest rate	2.30%
Employee stock ownership plan (ESOP), periodic installment payments from esop, amount paid					$ 275,000
Employee stock ownership plan (ESOP), interest payments from esop					$ 20,000
ESOP compensation expense for allocated shares			$ 325,000	$ 321,000

Employee Benefits - Schedule of

Employee Benefits - Schedule of Shares Under ESOP (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
Allocated shares	189,511	176,809
Committed to be released shares	6,480	6,480
Unallocated shares	45,362	71,283
Total ESOP shares	241,353	254,572
Fair value of unallocated shares (in thousands)	$ 2,276	$ 3,530

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator (in thousands):
Net Income	$ 5,167	$ 5,192
Dividends and undistributed earnings allocated to participating securities	(56)
Net income available to common shareholders	$ 5,111	$ 5,192
Denominator (shown as actual):
Basic weighted average common shares outstanding	4,391,499	4,355,307
Dilutive shares (in shares)	87,419	138,119
Diluted weighted average common shares outstanding	4,478,918	4,493,426
Basic earnings per share (in dollars per share)	$ 1.16	$ 1.19
Diluted earnings per share (in dollars per share)	$ 1.14	$ 1.15
Potentially dilutive securities excluded from EPS	41,627	44,488

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	Aug. 15, 2019	Sep. 30, 2013	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	May 17, 2018	May 08, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award contractual life			10 years
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0
Shares available for grant			6,013
Expected term in years					6 years 9 months 7 days
Expected forfeiture rate over contractual term			3.10%
Remaining weighted-average vesting period			6 years 6 months 26 days
Total intrinsic value of options exercised			$ 350,414
2013 Equity Incentive Plan | Equity option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		324,013
Market value of stock (in dollars per share)							$ 16.89
Granted (in shares)		322,000
2013 Equity Incentive Plan | Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, nonvested awards			1,800,000
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 224,000
Shares available for grant			336,345
2018 Equity Incentive Plan | Equity option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares	50,655
2018 Equity Incentive Plan | Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						163,000
Shares	20,215
2018 Equity Incentive Plan | Equity option and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						650,000
Market value of stock (in dollars per share)	$ 48.74
2013 and 2018 Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense				$ 262,000
2013 and 2018 Equity Incentive Plans | Equity option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award contractual life			10 years
Expiration period			10 years
Unrecognized compensation cost, nonvested awards			$ 1,300,000
Remaining weighted-average vesting period			3 years 8 months 12 days
One year vesting | 2013 and 2018 Equity Incentive Plans | Equity option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term in years			5 years 6 months
One year vesting | 2013 and 2018 Equity Incentive Plans | Equity option | Directors Excluding CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Five year vesting | 2013 and 2018 Equity Incentive Plans | Equity option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual award vesting percentage			20.00%
Expected term in years			6 years 6 months
Five year vesting | 2013 and 2018 Equity Incentive Plans | Equity option | Officers And Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Option Activity (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Shares
Award contractual life	10 years
2013 Equity Incentive Plan
Shares
Outstanding, beginning balance (in shares)	287,990
Granted, Shares	0
Less exercised (in shares)	9,398
Forfeited or Expired, Shares	0
Outstanding, ending balance (in shares)	278,592	287,990
Expected to vest, assuming a 0.31% annual forfeiture rate (in shares)	277,770
Exercisable (in shares)	147,937
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected Forfeiture Rate	0.31%
Expected forfeiture rate over contractual term	3.10%
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 36.98
Granted (in dollars per share)	0
Less exercised (in dollars per share)	16.89
Forfeited or expired, Weighted-Average Exercise Price (in dollars per share)	0
Outstanding, ending balance (in dollars per share)	37.65	$ 36.98
Expected to vest, assuming a 0.31% annual forfeiture rate (in dollars per share)	37.60
Exercisable (in dollars per share)	$ 22.53
Weighted-Average Remaining Contractual Term In Years
Outstanding, beginning balance		6 years 9 months 7 days
Outstanding, ending balance	6 years 6 months 26 days
Expected to vest, assuming a 0.31% annual forfeiture rate, Weighted Average Remaining Contractual Term	6 years 6 months 26 days
Exercisable	4 years 7 months 17 days
Aggregate Intrinsic Value
Beginning balance	$ 7,722,369
Granted	$ 0
Less exercised	$ 350,414
Forfeited or Expired, Aggregate Intrinsic Value	0
Ending balance	2,444,876	$ 7,722,369
Expected to vest, assuming a 0.31% annual forfeiture rate	2,444,876
Exercisable	$ 2,444,876

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Awards (Details) - Restricted stock awards	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Shares
Nonvested, Beginning balance (in shares) | shares	40,215
Granted (shares) | shares	0
Less vested (in shares) | shares	0
Forfeited or expired ( in shares) | shares	0
Nonvested, Ending balance (in shares) | shares	40,215
Weighted-Average Grant-Date Fair Value Per Share
Nonvested, Beginning balance (in dollars per share) | $ / shares	$ 53.64
Granted (in dollars per share) | $ / shares	0
Less vested (in dollars per share) | $ / shares	0
Forfeited or expired (in dollars per share) | $ / shares	0
Nonvested, Ending balance (in dollars per share) | $ / shares	$ 53.64
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms	3 years 9 months 18 days
2013 Equity Incentive Plan | Directors And Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years

Regulatory Capital - Compliance

Regulatory Capital - Compliance with Regulatory Capital Requirements under Banking Regulations (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage capital, Ratio	11.10%	11.30%
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage capital	$ 194.3	$ 196
Tier 1 leverage capital, Ratio	11.30%	11.60%
Tier 1 leverage capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 138	$ 84.8

Business Segments - Narrative (

Business Segments - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)segmentitem	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment	2
Commercial and Consumer Banking	fsbw:CommercialAndConsumerBankingMember
Total deposits | $	$ 1,446,269	$ 1,392,408
Retail Deposit | Pacific Northwest
Segment Reporting Information [Line Items]
Number of bank branches | item	21

Business Segments - Segment Fin

Business Segments - Segment Financial Results (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)employee	Mar. 31, 2019USD ($)employee
Segment Reporting Information [Line Items]
Net interest income	$ 17,473	$ 17,689
Provision for loan losses	(3,686)	(750)
Noninterest income	8,891	4,555
Noninterest expense	(16,184)	(14,797)
INCOME BEFORE PROVISION FOR INCOME TAXES	6,494	6,697
Provision for income taxes	(1,327)	(1,505)
NET INCOME	5,167	5,192
Total average assets for period ended	$ 1,734,035	$ 1,614,861
FTEs | employee	444	426
Home Lending
Segment Reporting Information [Line Items]
Net interest income	$ 1,181	$ 1,071
Provision for loan losses	(559)	(59)
Noninterest income	5,158	2,419
Noninterest expense	(4,162)	(3,304)
INCOME BEFORE PROVISION FOR INCOME TAXES	1,618	127
Provision for income taxes	(331)	(29)
NET INCOME	1,287	98
Total average assets for period ended	$ 327,441	$ 239,287
FTEs | employee	127	112
Commercial and Consumer Banking
Segment Reporting Information [Line Items]
Net interest income	$ 16,292	$ 16,618
Provision for loan losses	(3,127)	(691)
Noninterest income	3,733	2,136
Noninterest expense	(12,022)	(11,493)
INCOME BEFORE PROVISION FOR INCOME TAXES	4,876	6,570
Provision for income taxes	(996)	(1,476)
NET INCOME	3,880	5,094
Total average assets for period ended	$ 1,406,594	$ 1,375,574
FTEs | employee	317	314

Goodwill And Other Intangible_3

Goodwill And Other Intangible Assets (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill				$ 2,312,000	$ 2,312,000
Goodwill, Impairment Loss			$ 0
Finite-Lived Intangible Assets, Net [Abstract]
Finite-Lived Intangible Assets, Gross, Total	$ 7,490,000	$ 7,490,000	7,490,000
Finite-Lived Intangible Assets, Accumulated Amortization	(2,033,000)	(1,273,000)	(1,273,000)
Finite-Lived Intangible Assets, Net, Beginning Balance	5,457,000	6,217,000	6,217,000
Amortization	(176,000)	(190,000)	(760,000)
Finite-Lived Intangible Assets, Gross, Total	7,490,000		7,490,000
Finite-Lived Intangible Assets, Accumulated Amortization	2,209,000		2,033,000
Finite-Lived Intangible Assets, Net, Ending Balance	5,281,000		5,457,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remainder of 2020				530,000
2021				691,000
2022				691,000
2023				691,000
2024				621,000
Thereafter				2,057,000
Total	$ 5,281,000	$ 6,217,000	$ 5,457,000	5,281,000	5,457,000
Anchor Bancorp
Finite-Lived Intangible Assets, Net [Abstract]
Amortization period	10 years
Bank of America
Finite-Lived Intangible Assets [Line Items]
Goodwill				$ 2,300,000	$ 2,300,000
Finite-Lived Intangible Assets, Net [Abstract]
Amortization period	9 years

Revenue From Contracts With C_3

Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Noninterest Income
Noninterest Income (in-scope of Topic 606)	$ 701	$ 694
Noninterest Income (out-of-scope of Topic 606)	8,190	3,861
Total noninterest income	8,891	4,555
Debit Card Interchange Fees
Noninterest Income
Noninterest Income (in-scope of Topic 606)	435	423
Fees from non-sufficient funds
Noninterest Income
Noninterest Income (in-scope of Topic 606)	$ 266	$ 271

Covid-19 Pandemic (Details)

Covid-19 Pandemic (Details) $ in Millions	Apr. 21, 2020USD ($)item	Mar. 31, 2020
Staff approved to work remotely (as a percentage)		70.00%
Forecast
Secured approvals | item	433
Fundings | item	414
Loans funded	$ 72
One-to-four-family | Payment Deferral | Forecast
Loans restructured or modified	20.7
CONSUMER LOANS | Payment Deferral | Forecast
Loans restructured or modified	$ 8.2