First Financial Northwest (FFNW) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 05, 2018
Document and Entity Information
Entity Registrant Name	First Financial Northwest, Inc.
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Entity Central Index Key	1,401,564
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		10,914,556
Entity Filer Category	Accelerated Filer
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3

FIRST FINANCIAL NORTHWEST, INC.

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash on hand and in banks	$ 7,167	$ 9,189
Interest-earning deposits with banks	19,094	6,942
Investments available-for-sale, at fair value	140,868	132,242
Loans receivable, net of allowance of $13,116 and $12,882	995,557	988,662
Federal Home Loan Bank (FHLB) stock, at cost	7,410	9,882
Accrued interest receivable	4,664	4,084
Deferred tax assets, net	2,092	1,211
Other real estate owned (OREO)	483	483
Premises and equipment, net	21,277	20,614
Bank owned life insurance (BOLI), net	29,745	29,027
Prepaid expenses and other assets	4,460	5,738
Goodwill	889	889
Core deposit intangible	1,153	1,266
Total assets	1,234,859	1,210,229
Liabilities and Stockholders' Equity
Noninterest-bearing deposits	51,180	45,434
Interest-bearing deposits	865,099	794,068
Total deposits	916,279	839,502
FHLB Advances	149,000	216,000
Advance payments from borrowers for taxes and insurance	4,737	2,515
Accrued interest payable	541	326
Other liabilities	9,589	9,252
Total liabilities	1,080,146	1,067,595
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value; authorized 10,000,000 shares; no shares issued or outstanding	0	0
Common stock, $0.01 par value; authorized 90,000,000 shares; issued and outstanding 10,914,556 shares at September 30, 2018, and 10,748,437 shares at December 31, 2017	109	107
Additional paid-in capital	96,664	94,173
Retained earnings, substantially restricted	65,004	54,642
Accumulated other comprehensive loss, net of tax	(2,550)	(928)
Unearned Employee Stock Ownership Plan (ESOP) shares	(4,514)	(5,360)
Total stockholders' equity	154,713	142,634
Total liabilities and stockholders' equity	$ 1,234,859	$ 1,210,229

FIRST FINANCIAL NORTHWEST, IN_2

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Loans receivable allowance for loan losses	$ 13,116	$ 12,882
Stockholders' Equity
Preferred stock par value per share (in usd per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (in shares)	10,000,000	10,000,000
Preferred stock shares issued (in shares)	0	0
Preferred stock shares outstanding (in shares)	0	0
Common stock par value per share (in usd per share)	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	90,000,000	90,000,000
Common stock shares issued (in shares)	10,914,556	10,748,437
Common stock shares outstanding (in shares)	10,914,556	10,748,437

FIRST FINANCIAL NORTHWEST, IN_3

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED INCOME STATEMENTS - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income
Loans, including fees	$ 12,631,000	$ 10,959,000	$ 38,103,000	$ 31,338,000
Investments available-for-sale	1,063,000	869,000	3,002,000	2,601,000
Interest-earning deposits with banks	59,000	108,000	141,000	194,000
Dividends on FHLB stock	135,000	67,000	343,000	211,000
Total interest income	13,888,000	12,003,000	41,589,000	34,344,000
Interest expense
Deposits	2,912,000	1,933,000	7,623,000	5,400,000
FHLB advances and other borrowings	917,000	695,000	2,794,000	1,710,000
Total interest expense	3,829,000	2,628,000	10,417,000	7,110,000
Net interest income	10,059,000	9,375,000	31,172,000	27,234,000
Provision (recapture of provision) for loan losses	200,000	500,000	(4,200,000)	800,000
Net interest income after provision (recapture of provision) for loan losses	9,859,000	8,875,000	35,372,000	26,434,000
Noninterest income
Net gain (loss) on sale of investments	1,000	47,000	(20,000)	103,000
BOLI income	245,000	173,000	718,000	490,000
Wealth management revenue	145,000	252,000	400,000	699,000
Deposit related fees	167,000	113,000	503,000	277,000
Loan related fees	273,000	144,000	533,000	420,000
Other	10,000	2,000	16,000	8,000
Total noninterest income	841,000	731,000	2,150,000	1,997,000
Noninterest expense
Salaries and employee benefits	4,732,000	4,406,000	14,325,000	13,100,000
Occupancy and equipment	814,000	726,000	2,412,000	1,785,000
Professional fees	353,000	458,000	1,123,000	1,379,000
Data processing	356,000	372,000	1,031,000	1,131,000
OREO related expenses (reimbursements), net	1,000	(6,000)	4,000	14,000
Regulatory assessments	126,000	122,000	391,000	330,000
Insurance and bond premiums	95,000	105,000	355,000	302,000
Marketing	85,000	102,000	269,000	202,000
Other general and administrative	639,000	551,000	1,805,000	1,497,000
Total noninterest expense	7,201,000	6,836,000	21,715,000	19,740,000
Income before federal income tax provision	3,499,000	2,770,000	15,807,000	8,691,000
Federal income tax provision	707,000	909,000	3,071,000	2,618,000
Net income	$ 2,792,000	$ 1,861,000	$ 12,736,000	$ 6,073,000
Earnings per common share
Basic earnings per share (in dollars per share)	$ 0.27	$ 0.18	$ 1.24	$ 0.59
Diluted earnings per share (in dollars per share)	$ 0.27	$ 0.18	$ 1.22	$ 0.58
Weighted average number of common shares outstanding
Basic shares outstanding (in shares)	10,356,994	10,287,663	10,280,287	10,323,459
Diluted shares outstanding (in shares)	10,468,802	10,427,038	10,405,315	10,480,061

FIRST FINANCIAL NORTHWEST, IN_4

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 2,792	$ 1,861	$ 12,736	$ 6,073
Other comprehensive income, before tax:
Unrealized holding (losses) gains on investments available-for-sale	(600)	214	(3,002)	1,043
Tax benefit (provision)	126	(75)	630	(365)
Reclassification adjustment for net (gains) losses realized in income	1	47	(20)	103
Tax benefit (provision)	0	17	(4)	36
Gain (loss) on cash flow hedge	88	28	928	(215)
Tax (provision) benefit	(18)	(10)	(194)	75
Other comprehensive (loss) income, net of tax	(405)	127	(1,622)	471
Total comprehensive income	$ 2,387	$ 1,988	$ 11,114	$ 6,544

FIRST FINANCIAL NORTHWEST, IN_5

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), net of tax	Unearned ESOP Shares
Balances at beginning of period (in shares) at Dec. 31, 2016	10,938,251
Balances at beginning of period at Dec. 31, 2016	$ 138,125	$ 109	$ 96,852	$ 48,981	$ (1,328)	$ (6,489)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,073			6,073
Other comprehensive loss	$ 471				471
Exercise of stock options (in shares)	134,880
Exercise of stock options	$ 1,309	2	1,307
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	3,984
Net share settlement of stock awards	$ (105)		(105)
Stock or Unit Option Plan Expense	505
Compensation related to stock options and restricted stock awards	505		505
Allocation of ESOP shares	$ 1,471		625			846
Repurchase and retirement of common stock (in shares)	(313,200)
Repurchase and retirement of common stock	$ (5,019)	(3)	(5,016)
Cash dividend declared and paid	$ (2,070)			(2,070)
Balances at end of period (in shares) at Sep. 30, 2017	10,763,915
Balances at end of period at Sep. 30, 2017	$ 140,760	108	94,168	52,984	(857)	(5,643)
Balances at beginning of period (in shares) at Dec. 31, 2017	10,748,437
Balances at beginning of period at Dec. 31, 2017	$ 142,634	107	94,173	54,642	(928)	(5,360)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,736			12,736
Other comprehensive loss	$ (1,622)				(1,622)
Exercise of stock options (in shares)	137,940
Exercise of stock options	$ 1,365	1	1,364
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures	30,179
Net share settlement of stock awards	$ (40)	1	(41)
Stock or Unit Option Plan Expense	539
Compensation related to stock options and restricted stock awards	539		539
Allocation of ESOP shares	$ 1,475		629			846
Canceled common stock - restricted stock awards (in shares)	2,000
Cash dividend declared and paid	$ (2,374)			(2,374)
Balances at end of period (in shares) at Sep. 30, 2018	10,914,556
Balances at end of period at Sep. 30, 2018	$ 154,713	$ 109	$ 96,664	$ 65,004	$ (2,550)	$ (4,514)

FIRST FINANCIAL NORTHWEST, IN_6

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED STATEMETNS OF STOCKHOLDERS' EQUITY (PARENTHETICALS) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.23	$ 0.20
Allocated shares	84,640	84,642

FIRST FINANCIAL NORTHWEST, IN_7

FIRST FINANCIAL NORTHWEST, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income	$ 12,736,000	$ 6,073,000
Adjustments to reconcile net income to net cash provided by operating activities:
(Recapture of provision) provision for loan losses	(4,200,000)	800,000
OREO market value adjustments	0	50,000
Gain on sale of OREO property, net	0	(5,000)
Net amortization of premiums and discounts on investments	812,000	500,000
Loss (gain) on sale of investments available-for-sale	20,000	(103,000)
Depreciation of premises and equipment	1,228,000	883,000
Loss on sale of premises and equipment	0	65,000
Deferred federal income taxes	(449,000)	507,000
Allocation of ESOP shares	1,475,000	1,471,000
Stock compensation expense	539,000	505,000
Increase in cash surrender value of BOLI	(718,000)	(490,000)
Changes in operating assets and liabilities:
Decrease (increase) in prepaid expenses and other assets	2,319,000	(840,000)
Net increase in advance payments from borrowers for taxes and insurance	2,222,000	2,008,000
Increase in accrued interest receivable	(580,000)	(562,000)
Increase in accrued interest payable	215,000	49,000
Increase in other liabilities	337,000	3,038,000
Net cash provided by operating activities	15,956,000	13,949,000
Cash flows from investing activities:
Proceeds from sales of OREO properties	0	461,000
Proceeds from sales, calls and maturities of investments available-for-sale	15,186,000	7,494,000
Principal repayments on investments available-for-sale	5,385,000	7,980,000
Purchases of investments available-for-sale	(33,011,000)	(23,518,000)
Net increase in loans receivable	(2,695,000)	(117,619,000)
Redemption (purchase) of FHLB stock	2,472,000	(871,000)
Purchase of premises and equipment	(1,891,000)	(2,399,000)
Proceeds from sale or disposal of premises and equipment, net	0	7,000
Purchase of BOLI	0	(4,251,000)
Net cash received from acquisition of branches	0	71,568,000
Net cash used by investing activities	(14,554,000)	(61,148,000)
Cash flows from financing activities:
Net increase in deposits	76,777,000	23,735,000
Advances from the FHLB	320,500,000	40,000,000
Repayments of advances from the FHLB	(387,500,000)	(20,000,000)
Proceeds from stock options exercises	1,365,000	1,309,000
Net share settlement of stock awards	40,000	105,000
Repurchase and retirement of common stock	0	(5,019,000)
Dividends paid	(2,374,000)	(2,070,000)
Net cash provided by financing activities	8,728,000	37,850,000
Cash and cash equivalents:
Net decrease in cash and cash equivalents	10,130,000	(9,349,000)
Cash and cash equivalents at beginning of period	16,131,000	31,352,000
Cash and cash equivalents at end of period	26,261,000	22,003,000
Cash paid during the period for:
Interest paid	10,202,000	7,061,000
Federal income taxes paid	3,175,000	2,810,000
Assets acquired in acquisition of branches	0	72,239,000
Liabilities assumed in acquisition of branches	0	74,657,000
Noncash transactions:
Change in unrealized loss on investments available-for-sale	(2,982,000)	940,000
Change in gain on cash flow hedge	$ 928,000	$ (215,000)

Description of Business

Description of Business	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Description of Business	Description of Business First Financial Northwest, Inc. (“First Financial Northwest”), a Washington corporation, was formed on June 1, 2007 for the purpose of becoming the holding company for First Financial Northwest Bank (the “Bank”) in connection with the conversion from a mutual holding company structure to a stock holding company structure completed on October 9, 2007. First Financial Northwest’s business activities generally are limited to passive investment activities and oversight of its investment in First Financial Northwest Bank. Accordingly, the information presented in the consolidated financial statements and accompanying data, relates primarily to First Financial Northwest Bank. First Financial Northwest is a bank holding company, having converted from a savings and loan holding company on March 31, 2015, and as a bank holding company is subject to regulation by the Federal Reserve Bank of San Francisco. First Financial Northwest Bank is regulated by the Federal Deposit Insurance Corporation (“FDIC”) and the Washington State Department of Financial Institutions (“DFI”). As of September 30, 2018, First Financial Northwest Bank operated in ten locations in Washington with the headquarters and four additional branch locations in King County and five branch locations in Snohomish County. The Bank acquired four bank branches (one in King and three in Snohomish counties) and $74.7 million in retail deposits from Opus Bank on August 25, 2017. No loans were acquired in this transaction. The Bank’s primary market area consists of King, Snohomish, Pierce and Kitsap counties, Washington. The Bank has received FDIC approval to open an additional branch in Kent, Washington, which is expected to open in the first quarter of 2019. The Bank is a portfolio lender, originating and purchasing one-to-four family residential, multifamily, commercial real estate, construction/land development, business, and consumer loans. Loans are primarily funded by deposits from the general public, supplemented by borrowings from the Federal Home Loan Bank of Des Moines (“FHLB”) and deposits raised in the national brokered deposit market. As used throughout this report, the terms “we,” “our,” “us,” or the “Company” refer to First Financial Northwest, Inc. and its consolidated subsidiary First Financial Northwest Bank, unless the context otherwise requires.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by U.S. Generally Accepted Accounting Principles (“GAAP”) for complete financial statements. These unaudited interim consolidated financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2017 , as filed with the SEC (“2017 Form 10-K”). In our opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of the unaudited interim consolidated financial statements in accordance with GAAP have been included. All significant intercompany balances and transactions between the Company and its subsidiaries have been eliminated in consolidation. Operating results for the nine months ended September 30, 2018 , are not necessarily indicative of the results that may be expected for the year ending December 31, 2018 . In preparing the unaudited consolidated financial statements, we are required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change relate to the allowance for loan and lease losses (“ALLL”), the valuation of other real estate owned (“OREO”) and the underlying collateral of impaired loans, deferred tax assets, and the fair value of financial instruments. The Company’s activities are considered to be a single industry segment for financial reporting purposes. The Company is engaged in the business of attracting deposits from the general public and originating and purchasing loans for its portfolio. Substantially all income is derived from a diverse base of commercial, multifamily, and residential real estate loans, consumer lending activities, and investments. Certain amounts in the unaudited interim consolidated financial statements for prior periods have been reclassified to conform to the current unaudited financial statement presentation with no effect on consolidated net income or stockholders’ equity.

Recently Issued Accounting Pron

Recently Issued Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Recent Accounting Pronouncements Adopted in 2018 In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) . In August 2015, FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606) which postponed the effective date of 2014-09. Subsequently, in March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations. This amendment clarifies that an entity should determine if it is the principal or the agent for each specified good or service promised in a contract with a customer. In April 2016, the FASB issued ASU No. 2016-10 , Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The core principle of Topic 606 is that an entity must recognize revenue when it has satisfied a performance obligation of transferring promised goods or services to a customer. These standards were effective for interim and annual periods beginning after December 15, 2017. The Company has analyzed its sources of noninterest income to determine when the satisfaction of the performance obligation occurs and the appropriate recognition of revenue. The adoption of these ASUs did not have a material impact on the Company’s consolidated financial statements. For more discussion on this topic, see Note 12 - Revenue Recognition in this report. In January 2016, FASB issued ASU No. 2016-01, Financial Instruments - Overall, Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. In addition, the amendments in this ASU require an entity to disclose the fair value of its financial instruments using the exit price notion. Exit price is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The amendments in this ASU were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company has updated the fair value disclosure on Note 7 in this report to reflect adoption of this standard, to include using the exit price notion in the fair value disclosure of financial instruments. The adoption of ASU 2016-01 did not have a material impact on the Company’s consolidated financial statements. In August 2016, FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the appropriate classification of eight specific cash flow issues on the cash flow statement. Debt prepayment costs should be classified as an outflow for financing activities. Settlement of zero-coupon debt instruments divides the interest portion as an outflow for operating activities and the principal portion as an outflow for financing activities. Contingent consideration payments made after a business combination should be classified as outflows for financing and operating activities. Proceeds from the settlement of bank-owned life insurance policies should be classified as inflows from investing activities. Other specific areas are identified in the ASU as to the appropriate classification of the cash inflows or outflows. The amendments in this ASU were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company does not currently have items on its cash flow statement that were impacted by adoption of this ASU and therefore adoption of ASU 2016-15 did not have a material impact on the Company’s consolidated financial statements. In January 2017, FASB issued ASU 2017-01, Business Combinations (Topic 805). This ASU clarifies the definition of a business to assist in determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this ASU provide a screen to determine when a set of assets and activities is not a business, thereby reducing the number of transactions requiring further evaluation. If the screen is not met, the amendments in this ASU further provide a framework to evaluate if the criteria is present to qualify for a business. This ASU was effective for annual periods beginning after December 15, 2017. Adoption of ASU 2017-01 did not have a material impact on the Company’s consolidated financial statements. In May 2017, FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. The ASU was issued to provide clarity as to when to apply modification accounting when there is a change in the terms or conditions of a share-based payment award. According to this ASU, an entity should account for the effects of a modification unless the fair value, vesting conditions, and balance sheet classification of the award is the same after the modification as compared to the original award prior to the modification. This ASU was effective for reporting periods beginning after December 15, 2017. The Company has not had any modifications on share-based payment awards and therefore the adoption of ASU No. 2017-09 did not have a material impact on the Company’s consolidated financial statements. In February 2018, FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220). This ASU was issued to allow a reclassification from accumulated other comprehensive income to retained earnings from stranded tax effects resulting from the revaluation of the net deferred tax asset (“DTA”) to the new corporate tax rate of 21% as a result of the Tax Cuts and Jobs Act (“Tax Act”). This ASU is effective for reporting periods beginning after December 15, 2018, with early adoption permitted. The Company adopted this ASU as of December 31, 2017, which resulted in reclassifying a net unrealized gain from the change in tax rate with an increase to accumulated other comprehensive income and a decrease to retained earnings by $41,000, respectively. In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740). This ASU was issued to provide guidance on the income tax accounting implications of the Tax Act and allows for entities to report provisional amounts for specific income tax effects of the Act for which the accounting under Topic 740 was not yet complete but a reasonable estimate could be determined. A measurement period of one-year is allowed to complete the accounting effects under Topic 740 and revise any previous estimates reported. Any provisional amounts or subsequent adjustments included in an entity’s financial statements during the measurement period should be included in income from continuing operations as an adjustment to tax expense in the reporting period the amounts are determined. The Company adopted this ASU with the provisional adjustments as reported in the Consolidated Financial Statements included in the 2017 Form 10-K. As of September 30, 2018, the Company did not incur any adjustments to the provisional recognition. In June 2018, FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718). This ASU was issued to expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. Previously, these awards were recorded at the fair value of consideration received or the fair value of the equity instruments issued and was measured as the earlier of the commitment date or date performance was completed. The amendments in this ASU require the awards to be measured at the grant-date fair value of the equity instrument. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted once the entity has adopted Topic 606. The Company has adopted this ASU with the nonemployee share-based payment awards granted in June 2018, with no material impact on the Company’s consolidated financial statements. Recent Accounting Pronouncements In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842) . ASU No. 2016-02 requires lessees to recognize on the balance sheet the assets and liabilities arising from operating leases. In July 2018, FASB issued ASU No. 2018-11, Leases (Topic 842) to address the comparative reporting requirements when this ASU is adopted. Under this ASU, a lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. A lessee should include payments to be made in an optional period only if the lessee is reasonably certain to exercise an option to extend the lease or not to exercise an option to terminate the lease. For a finance lease, interest payments should be recognized separately from amortization of the right-of-use asset in the statement of comprehensive income. For operating leases, the lease cost should be allocated over the lease term on a generally straight-line basis. The amendments in ASU 2016-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. According to ASU 2018-11, the Company may recognize the cumulative-effect adjustment to the opening balance of retained earnings at the time ASU 2016-02 is adopted. Early application of the amendments in the ASU is permitted. The effect of the adoption will depend on leases at the time of adoption. Once adopted, we expect to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices under noncancelable operating lease agreements, however, based on current leases, the adoption is expected to increase our consolidated balance sheets by less than 5% and not to have a material impact on our regulatory capital ratios. In June 2016, FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). This ASU replaces the existing incurred loss impairment methodology that recognizes credit losses when a probable loss has been incurred with new methodology where loss estimates are based upon lifetime expected credit losses. The amendments in this ASU require a financial asset that is measured at amortized cost to be presented at the net amount expected to be collected. The income statement would then reflect the measurement of credit losses for newly recognized financial assets as well as changes to the expected credit losses that have taken place during the reporting period. The measurement of expected credit losses will be based on historical information, current conditions, and reasonable and supportable forecasts that impact the collectability of the reported amount. Available-for-sale securities will bifurcate the fair value mark and establish an allowance for credit losses through the income statement for the credit portion of that mark. The interest portion will continue to be recognized through accumulated other comprehensive income or loss. The change in allowance recognized as a result of adoption will occur through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is adopted. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, with early adoption permitted for fiscal years beginning after December 15, 2018. The Company is evaluating our current expected loss methodology of our loan and investment portfolios to identify the necessary modifications in accordance with this standard and expects a change in the processes and procedures to calculate the ALLL, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. A valuation adjustment to our ALLL or investment portfolio that is identified in this process will be reflected as a one-time adjustment in equity rather than earnings. We are in the process of compiling historical data that will be used to calculate expected credit losses on our loan portfolio to ensure we are fully compliant with the ASU at the adoption date and are evaluating the potential impact adoption of this ASU will have on our consolidated financial statements. The Company intends to adopt ASU 2016-13 in the first quarter of 2020, and as a result, we expect our allowance for loan losses to increase. Until our evaluation is complete, however, the magnitude of the increase will not be known. In January 2017, FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350). This ASU simplifies the impairment calculation for subsequent measurement of goodwill by eliminating the step of comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. Under the amendments in this ASU, an entity will evaluate the carrying amount of a reporting unit to its fair value, as if the reporting unit had been acquired in a business combination. An impairment charge should be recognized for the amount that the carrying amount exceeds the fair value, not to exceed the amount of goodwill. The income tax effect should be considered for any tax deductible goodwill when measuring the impairment loss. The amendments in this ASU are effective for goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for reporting periods after January 1, 2017. The Company recognized goodwill from its recent acquisition on August 25, 2017 of four branches from Opus Bank, a California state-chartered commercial bank (the “Branch Acquisition”) and expects to early adopt this ASU for the annual goodwill impairment test in 2018. Adoption of ASU 2017-04 is not expected to have a material impact on the Company’s consolidated financial statements. In March 2017, FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . The ASU shortens the amortization period for certain callable debt securities held at a premium. The standard will take effect for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently evaluating its available-for-sale securities that fit the criteria of this ASU but has not yet quantified the impact. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's consolidated financial statements. In August 2017, FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815). This ASU was issued to provide investors better insight to an entity’s risk management hedging strategies by permitting companies to recognize the economic results of its hedging strategies in its financial statements. The amendments in this ASU permit hedge accounting for hedging relationships involving non-financial risk and interest rate risk by removing certain limitations in cash flow and fair value hedging relationships. In addition, the ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted. The Company intends to adopt this ASU during 2018, however its current cash flow hedge will not likely be impacted by the adoption of ASU 2017-12, and consequently, is not expected to have a material impact on the Company’s consolidated financial statements. In August 2018, FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820) - Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments in this ASU remove certain disclosure requirements regarding transfers between Level 1 and Level 2 of the fair value hierarchy and changes in unrealized gains and losses for recurring Level 3 fair value measurements. In addition, the amendments modified and added certain disclosure requirements for Level 3 fair value measurements. This ASU is effective for fiscal years beginning after December 15, 2019, and early adoption is permitted. Entities are permitted to early adopt any removed or modified disclosures and adopt the additional disclosures at the effective date. Adoption of ASU 2018-13 is not expected to have a material impact on the Company’s consolidated financial statements.

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	Investments Investments available-for-sale are summarized as follows at the dates indicated: September 30, 2018 Amortized Gross Gross Fair Value (In thousands) Mortgage-backed investments: Fannie Mae $ 26,488 $ 11 $ (1,165 ) $ 25,334 Freddie Mac 5,372 1 (161 ) 5,212 Ginnie Mae 23,500 — (1,521 ) 21,979 Other 6,028 — (13 ) 6,015 Municipal bonds 10,640 5 (179 ) 10,466 U.S. Government agencies 49,564 79 (925 ) 48,718 Corporate bonds 23,490 245 (591 ) 23,144 Total $ 145,082 $ 341 $ (4,555 ) $ 140,868 December 31, 2017 Amortized Gross Gross Fair Value (In thousands) Mortgage-backed investments: Fannie Mae $ 26,961 $ 69 $ (466 ) $ 26,564 Freddie Mac 5,510 18 (56 ) 5,472 Ginnie Mae 22,288 14 (726 ) 21,576 Municipal bonds 13,126 290 (21 ) 13,395 U.S. Government agencies 43,088 81 (536 ) 42,633 Corporate bonds 22,502 527 (427 ) 22,602 Total $ 133,475 $ 999 $ (2,232 ) $ 132,242 The tables below summarize the aggregate fair value and gross unrealized loss by length of time those investment securities have been continuously in an unrealized loss position at the dates indicated: September 30, 2018 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss (In thousands) Mortgage-backed investments: Fannie Mae $ 11,129 $ (238 ) $ 13,736 $ (927 ) $ 24,865 $ (1,165 ) Freddie Mac 5,102 (161 ) — — 5,102 (161 ) Ginnie Mae 6,951 (207 ) 15,028 (1,314 ) 21,979 (1,521 ) Other 6,015 (13 ) — — 6,015 (13 ) Municipal bonds 6,378 (134 ) 963 (45 ) 7,341 (179 ) U.S. Government agencies 32,551 (708 ) 6,451 (217 ) 39,002 (925 ) Corporate bonds 993 (7 ) 6,916 (584 ) 7,909 (591 ) Total $ 69,119 $ (1,468 ) $ 43,094 $ (3,087 ) $ 112,213 $ (4,555 ) December 31, 2017 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss (In thousands) Mortgage-backed investments: Fannie Mae $ 15,202 $ (91 ) $ 6,759 $ (375 ) $ 21,961 $ (466 ) Freddie Mac 3,189 (56 ) — — 3,189 (56 ) Ginnie Mae 6,454 (61 ) 14,234 (665 ) 20,688 (726 ) Municipal bonds 1,403 (21 ) — — 1,403 (21 ) U.S. Government agencies 33,268 (435 ) 1,800 (101 ) 35,068 (536 ) Corporate bonds 1,499 (1 ) 7,074 (426 ) 8,573 (427 ) Total $ 61,015 $ (665 ) $ 29,867 $ (1,567 ) $ 90,882 $ (2,232 ) On a quarterly basis, management makes an assessment to determine whether there have been any events or economic circumstances to indicate that a security on which there is an unrealized loss is impaired on an other-than-temporary basis. The Company considers many factors including the severity and duration of the impairment, recent events specific to the issuer or industry, and for debt securities, external credit ratings and recent downgrades. Securities on which there is an unrealized loss that is deemed to be an other-than-temporary impairment (“OTTI”) are written down to fair value. If the Company intends to sell a debt security, or it is likely that the Company will be required to sell the debt security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If the Company does not intend to sell the debt security and it is not likely that it will be required to sell the debt security but does not expect to recover the entire amortized cost basis of the debt security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a debt security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the debt security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. At September 30, 2018 , and December 31, 2017 , the Company had 57 securities and 36 securities in an unrealized loss position, respectively, with 18 and 13 of these securities in an unrealized loss position for 12 months or more, respectively. Management does not believe that any individual unrealized loss as of September 30, 2018, or December 31, 2017, represented OTTI. The decline in fair market value of these securities was generally due to changes in interest rates and changes in market-desired spreads subsequent to their purchase. Management also reviewed the financial condition of the entities issuing municipal or corporate bonds at September 30, 2018 , and December 31, 2017, and determined that an OTTI charge was not warranted. The amortized cost and estimated fair value of investments available-for-sale at September 30, 2018 , by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments not due at a single maturity date, primarily mortgage-backed investments, are shown separately. September 30, 2018 Amortized Cost Fair Value (In thousands) Due within one year $ 253 $ 251 Due after one year through five years 7,655 7,725 Due after five years through ten years 19,673 19,196 Due after ten years 56,113 55,156 83,694 82,328 Mortgage-backed investments 61,388 58,540 Total $ 145,082 $ 140,868 Under Washington state law, in order to participate in the public funds program the Company is required to pledge eligible securities as collateral in an amount equal to 50% of the public deposits held less the FDIC insured amount. Investment securities with market values of $14.5 million and $14.2 million were pledged as collateral for public deposits at September 30, 2018 , and December 31, 2017 , respectively, both of which exceeded the collateral requirements established by the Washington Public Deposit Protection Commission. For the three and nine months ended September 30, 2018 , we had calls, sales, and maturities on investment securities of $5.4 million , and $15.2 million , respectively, generating a net gain of $1,000 and a net loss of $20,000 , respectively. For the three and nine months ended September 30, 2017 , we had calls, sales and a maturity on investment securities of $2.8 million , and $7.5 million , respectively, generating a net gain of $47,000 and $103,000 , respectively.

Loans Receivable

Loans Receivable	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Loans Receivable	Loans Receivable Loans receivable are summarized as follows at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family residential: Permanent owner occupied $ 184,698 $ 148,304 Permanent non-owner occupied 143,226 130,351 327,924 278,655 Multifamily 176,521 184,902 Commercial real estate 360,485 361,842 Construction/land: One-to-four family residential 84,912 87,404 Multifamily 80,607 108,439 Commercial 21,385 5,325 Land 7,113 36,405 194,017 237,573 Business 29,655 23,087 Consumer 12,419 9,133 Total loans 1,101,021 1,095,192 Less: Loans in process ("LIP") 91,232 92,498 Deferred loan fees, net 1,116 1,150 Allowance for loan and lease losses ("ALLL") 13,116 12,882 Loans receivable, net $ 995,557 $ 988,662 At September 30, 2018 , loans totaling $475.9 million were pledged to secure borrowings from the FHLB of Des Moines compared to $422.6 million at December 31, 2017 . ALLL . The Company maintains an ALLL as a reserve against probable and inherent risk of losses in its loan portfolios. The ALLL is comprised of a general reserve component for loans evaluated collectively for loss and a specific reserve component for loans evaluated individually. When an issue is identified, and it is determined that the loan needs to be classified as nonperforming and/or impaired, an evaluation of the discounted expected cash flows is done, and an appraisal may be obtained on the collateral. Based on this evaluation, additional provision for loan loss or charge-offs is recorded prior to the end of the financial reporting period. The following tables summarize changes in the ALLL and loan portfolio by loan type and impairment method at the dates and for the periods shown: At or For the Three Months Ended September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 3,265 $ 1,928 $ 4,494 $ 2,121 $ 674 $ 272 $ 12,754 Recoveries 2 — — 160 — — 162 Provision (recapture) 265 (189 ) (16 ) (84 ) 236 (12 ) 200 Ending balance $ 3,532 $ 1,739 $ 4,478 $ 2,197 $ 910 $ 260 $ 13,116 At or For the Nine Months Ended September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,837 $ 1,820 $ 4,418 $ 2,816 $ 694 $ 297 $ 12,882 Recoveries 4,248 — 14 172 — — 4,434 (Recapture) provision (3,553 ) (81 ) 46 (791 ) 216 (37 ) (4,200 ) Ending balance $ 3,532 $ 1,739 $ 4,478 $ 2,197 $ 910 $ 260 $ 13,116 ALLL by category: General reserve $ 3,446 $ 1,739 $ 4,471 $ 2,197 $ 910 $ 260 $ 13,023 Specific reserve 86 — 7 — — — 93 Loans: (1) Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 Loans collectively evaluated for impairment (2) 318,353 175,405 357,335 103,009 29,655 12,330 996,087 Loans individually evaluated for impairment (3) 9,571 1,116 2,926 — — 89 13,702 ____________ (1) Net of LIP. (2) Loans collectively evaluated for general reserves. (3) Loans individually evaluated for specific reserves. At or For the Three Months Ended September 30, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,627 $ 1,231 $ 3,733 $ 2,942 $ 457 $ 295 $ 11,285 Recoveries 247 — 78 — — — 325 (Recapture) provision (157 ) 472 (68 ) 40 211 2 500 Ending balance $ 2,717 $ 1,703 $ 3,743 $ 2,982 $ 668 $ 297 $ 12,110 At or For the Nine Months Ended September 30, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,551 $ 1,199 $ 3,893 $ 2,792 $ 237 $ 279 $ 10,951 Recoveries 280 — 78 — — 1 359 (Recapture) provision (114 ) 504 (228 ) 190 431 17 800 Ending balance $ 2,717 $ 1,703 $ 3,743 $ 2,982 $ 668 $ 297 $ 12,110 ALLL by category: General reserve $ 2,582 $ 1,703 $ 3,723 $ 2,982 $ 668 $ 297 $ 11,955 Specific reserve 135 — 20 — — — 155 Loans: (1) Total loans $ 266,447 $ 173,681 $ 319,872 $ 153,914 $ 22,243 $ 9,301 $ 945,458 Loans collectively evaluated for impairment (2) 251,141 172,541 316,656 153,914 22,243 9,205 925,700 Loans individually evaluated for impairment (3) 15,306 1,140 3,216 — — 96 19,758 _____________ (1) Net of LIP. (2) Loans collectively evaluated for general reserves. (3) Loans individually evaluated for specific reserves. Past Due Loans. Loans are considered past due if a scheduled principal or interest payment is due and unpaid for 30 days or more. At September 30, 2018 , past due loans were 0.08% of total loans receivable, net of LIP. In comparison, past due loans were 0.01% of total loans receivable, net of LIP at December 31, 2017 . The following tables represent a summary of the aging of loans by type at the dates indicated: Loans Past Due as of September 30, 2018 30-59 Days 60-89 Days 90 Days and Total Past Current Total (1) (2) (In thousands) Real estate: One-to-four family residential: Owner occupied $ 496 $ — $ — $ 496 $ 184,202 $ 184,698 Non-owner occupied — — — — 143,226 143,226 Multifamily — — — — 176,521 176,521 Commercial real estate 325 — — 325 359,936 360,261 Construction/land — — — — 103,009 103,009 Total real estate 821 — — 821 966,894 967,715 Business — — — — 29,655 29,655 Consumer — — — — 12,419 12,419 Total loans $ 821 $ — $ — $ 821 $ 1,008,968 $ 1,009,789 ________________ (1) There were no loans 90 days and greater past due and still accruing interest at September 30, 2018 . (2) Net of LIP. Loans Past Due as of December 31, 2017 30-59 Days 60-89 Days 90 Days and Total Past Current Total (1) (2) (In thousands) Real estate: One-to-four family residential: Owner occupied $ 101 $ — $ — $ 101 $ 148,203 $ 148,304 Non-owner occupied — — — — 130,351 130,351 Multifamily — — — — 184,902 184,902 Commercial real estate — — — — 361,299 361,299 Construction/land — — — — 145,618 145,618 Total real estate 101 — — 101 970,373 970,474 Business — — — — 23,087 23,087 Consumer — — — — 9,133 9,133 Total loans $ 101 $ — $ — $ 101 $ 1,002,593 $ 1,002,694 _________________ (1) There were no loans 90 days and greater past due and still accruing interest at December 31, 2017 . (2) Net of LIP. Nonaccrual Loans. The following table is a summary of nonaccrual loans by loan type at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family residential $ 113 $ 128 Commercial real estate 325 — Consumer 46 51 Total nonaccrual loans $ 484 $ 179 During the three and nine months ended September 30, 2018 , interest income that would have been recognized had these nonaccrual loans been performing in accordance with their original terms was $4,000 and $10,000 , respectively. For the three and nine months ended September 30, 2017 , foregone interest on nonaccrual loans was $3,000 and $21,000 , respectively. The following tables summarize the loan portfolio by type and payment status at the dates indicated: September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Performing (2) $ 327,811 $ 176,521 $ 359,936 $ 103,009 $ 29,655 $ 12,373 $ 1,009,305 Nonperforming (3) 113 — 325 — — 46 484 Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 _____________ (1) Net of LIP. (2) There were $184.6 million of owner-occupied one-to-four family residential loans and $143.2 million of non-owner occupied one-to-four family residential loans classified as performing. (3) The $113,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied. December 31, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Performing (2) $ 278,527 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,082 $ 1,002,515 Nonperforming (3) 128 — — — — 51 179 Total loans $ 278,655 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,133 $ 1,002,694 _____________ (1) Net of LIP. (2) There were $148.2 million of owner-occupied one-to-four family residential loans and $130.3 million of non-owner occupied one-to-four family residential loans classified as performing. (3) The $128,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied. Impaired Loans. A loan is considered impaired when we have determined that we may be unable to collect payments of principal or interest when due under the terms of the original loan document. There were no funds committed to be advanced in connection with impaired loans at either September 30, 2018 , or December 31, 2017 . The following tables present a summary of loans individually evaluated for impairment by loan type at the dates indicated: September 30, 2018 Recorded Investment (1) Unpaid Principal Balance (2) Related Allowance (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,045 $ 1,213 $ — Non-owner occupied 4,857 4,857 — Multifamily 1,116 1,116 — Commercial real estate 2,556 2,556 — Consumer 89 141 — Total 9,663 9,883 — Loans with an allowance: One-to-four family residential: Owner occupied 516 562 23 Non-owner occupied 3,153 3,174 63 Commercial real estate 370 370 7 Total 4,039 4,106 93 Total impaired loans: One-to-four family residential: Owner occupied 1,561 1,775 23 Non-owner occupied 8,010 8,031 63 Multifamily 1,116 1,116 — Commercial real estate 2,926 2,926 7 Consumer 89 141 — Total $ 13,702 $ 13,989 $ 93 _________________ (1) Represents the loan balance less charge-offs. (2) Contractual loan principal balance. December 31, 2017 Recorded Investment (1) Unpaid Principal Balance (2) Related Allowance (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,321 $ 1,516 $ — Non-owner occupied 8,409 8,409 — Multifamily 1,134 1,134 — Commercial real estate 1,065 1,065 — Consumer 94 144 — Total 12,023 12,268 — Loans with an allowance: One-to-four family residential: Owner occupied 522 568 5 Non-owner occupied 3,310 3,332 111 Commercial real estate 2,129 2,129 19 Total 5,961 6,029 135 Total impaired loans: One-to-four family residential: Owner occupied 1,843 2,084 5 Non-owner occupied 11,719 11,741 111 Multifamily 1,134 1,134 — Commercial real estate 3,194 3,194 19 Consumer 94 144 — Total $ 17,984 $ 18,297 $ 135 _________________ (1) Represents the loan balance less charge-offs. (2) Contractual loan principal balance. The following tables present the average recorded investment in loans individually evaluated for impairment and the interest income recognized for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,049 $ 18 $ 1,182 $ 55 Non-owner occupied 5,112 83 6,385 298 Multifamily 1,119 19 1,125 55 Commercial real estate 2,402 42 1,732 133 Consumer 90 2 92 6 Total 9,772 164 10,516 547 Loans with an allowance: One-to-four family residential: Owner occupied 517 9 519 26 Non-owner occupied 3,160 40 3,232 122 Commercial real estate 373 5 1,247 22 Total 4,050 54 4,998 170 Total impaired loans: One-to-four family residential: Owner occupied 1,566 27 1,701 81 Non-owner occupied 8,272 123 9,617 420 Multifamily 1,119 19 1,125 55 Commercial real estate 2,775 47 2,979 155 Consumer 90 2 92 6 Total $ 13,822 $ 218 $ 15,514 $ 717 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,658 $ 22 $ 1,886 $ 69 Non-owner occupied 11,395 158 13,445 485 Multifamily 1,143 19 1,251 56 Commercial real estate 2,693 49 2,818 135 Consumer 97 2 99 6 Total 16,986 250 19,499 751 Loans with an allowance: One-to-four family residential: Owner occupied 1,099 10 1,495 22 Non-owner occupied 3,343 47 3,773 128 Commercial real estate 745 10 749 31 Construction/land — — 124 — Total 5,187 67 6,141 181 Total impaired loans: One-to-four family residential: Owner occupied 2,757 32 3,381 91 Non-owner occupied 14,738 205 17,218 613 Multifamily 1,143 19 1,251 56 Commercial real estate 3,438 59 3,567 166 Construction/land — — 124 — Consumer 97 2 99 6 Total $ 22,173 $ 317 $ 25,640 $ 932 Troubled Debt Restructurings. Certain loan modifications are accounted for as troubled debt restructured loans (“TDRs”). At September 30, 2018 , the TDR portfolio totaled $13.2 million . At December 31, 2017 , the TDR portfolio totaled $17.8 million . At both dates, all TDRs were performing according to their modified repayment terms. At September 30, 2018 , the Company had no commitments to extend additional credit to borrowers whose loan terms have been modified in TDRs. All TDRs are also classified as impaired loans and are included in the loans individually evaluated for impairment as part of the calculation of the ALLL. No loans accounted for as TDRs were charged-off to the ALLL for the three months ended September 30, 2018 and 2017 . The following tables present TDR modifications for the periods indicated and their recorded investment prior to and after the modification: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (Dollars in thousands) One-to-four family residential Advancement of maturity date 1 563 563 1 563 563 Commercial Advancement of maturity date — $ — $ — 1 $ 1,124 $ 1,124 Total 1 $ 563 $ 563 2 $ 1,687 $ 1,687 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (Dollars in thousands) One-to-four family residential Principal and interest with interest rate concession and advancement of maturity date 1 $ 524 $ 524 8 $ 2,492 $ 2,492 Total 1 $ 524 $ 524 8 $ 2,492 $ 2,492 TDRs that default after they have been modified are typically evaluated individually on a collateral basis. Any additional impairment is charged to the ALLL. For the three and nine months ended September 30, 2018 , and September 30, 2017 , no loans that had been modified in the previous 12 months defaulted. Credit Quality Indicators . The Company utilizes a nine-category risk rating system and assigns a risk rating for all credit exposures. The risk rating system is designed to define the basic characteristics and identify risk elements of each credit extension. Credits risk rated 1 through 5 are considered to be “pass” credits. Pass credits include assets, such as cash secured loans with funds on deposit with the Bank, where there is virtually no credit risk. Pass credits also include credits that are on the Company’s watch list, where the borrower exhibits potential weaknesses, which may, if not checked or corrected, negatively affect the borrower’s financial capacity and threaten their ability to fulfill debt obligations in the future. Credits classified as special mention are risk rated 6 and possess weaknesses that deserve management’s close attention. Special mention assets do not expose the Company to sufficient risk to warrant adverse classification in the substandard, doubtful or loss categories. Substandard credits are risk rated 7 . An asset is considered substandard if it is inadequately protected by the current net worth and payment capacity of the borrower or of any collateral pledged. Substandard assets include those characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful are risk rated 8 and have all the weaknesses inherent in those credits classified as substandard with the added characteristic that the weaknesses present make collection or liquidation in full highly questionable and improbable, on the basis of currently existing facts, conditions, and values. Assets classified as loss are risk rated 9 and are considered uncollectible and cannot be justified as a viable asset for the Company. There were no loans classified as doubtful or loss at September 30, 2018 , and December 31, 2017 . The following tables represent a summary of loans by type and risk category at the dates indicated: September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Risk Rating: Pass $ 325,509 $ 176,521 $ 359,021 $ 103,009 $ 29,655 $ 12,373 $ 1,006,088 Special mention 1,762 — 370 — — — 2,132 Substandard 653 — 870 — — 46 1,569 Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 _____________ (1) Net of LIP. December 31, 2017 One-to-Four Family Residential Multifamily Commercial Real Estate Construction/ Land Business Consumer Total (1) (In thousands) Risk Rating: Pass $ 275,653 $ 184,902 $ 358,285 $ 145,618 $ 23,087 $ 8,893 $ 996,438 Special mention 2,329 — 2,459 — — 188 4,976 Substandard 673 — 555 — — 52 1,280 Total loans $ 278,655 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,133 $ 1,002,694 _____________ (1) Net of LIP.

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2018
Other Real Estate [Abstract]
Other Real Estate Owned	Other Real Estate Owned OREO includes properties acquired by the Company through foreclosure and deed in lieu of foreclosure. The following table is a summary of OREO activity during the periods shown: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Balance at beginning of period $ 483 $ 1,825 $ 483 $ 2,331 Gross proceeds from sale of OREO — — — (461 ) Gain on sale of OREO — — — 5 Market value adjustments — — — (50 ) Balance at end of period $ 483 $ 1,825 $ 483 $ 1,825 For the three and nine months ended September 30, 2018, there were no OREO properties sold and no market value adjustments taken on the remaining properties in OREO. During the nine months ended September 30, 2017, a $50,000 market value adjustment was recognized prior to the sale of the one OREO property sold during that period. OREO at September 30, 2018 , consisted of $483,000 in commercial real estate properties. At September 30, 2018, foreclosure proceedings were underway on a $325,000 nonaccrual commercial loan and there were no loans secured by residential real estate properties for which formal foreclosure proceedings were in process.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value	Fair Value The fair value of financial instruments presented in this note, with the exception of loans receivable, are based on the same methodology as presented in Note 7 of the Notes to Consolidated Financial Statements contained in the Company’s 2017 10-K. The Company has adopted ASU 2016-01, and therefore is measuring the fair value of loans receivable under the exit price notion rather than the previous method of entry price notion. Under the entry price notion, the fair value estimate of loans receivable was based on discounted cash flow. At September 30, 2018, the exit price notion used to estimate the fair value of loans receivable was based on similar techniques, with the addition of current origination spreads, liquidity premiums, or credit adjustments. The fair value of nonperforming loans is based on the underlying value of the collateral for periods prior to and after adoption of ASU 2016-01. The Company determines the fair values of its financial instruments based on the fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair values. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect its estimate for market assumptions. Valuation inputs refer to the assumptions market participants would use in pricing a given asset or liability using one of the three valuation techniques. Inputs can be observable or unobservable. Observable inputs are those assumptions that market participants would use in pricing the particular asset or liability. These inputs are based on market data and are obtained from an independent source. Unobservable inputs are assumptions based on the Company’s own information or estimate of assumptions used by market participants in pricing the asset or liability. Unobservable inputs are based on the best and most current information available on the measurement date. All inputs, whether observable or unobservable, are ranked in accordance with a prescribed fair value hierarchy: • Level 1 - Quoted prices for identical instruments in active markets. • Level 2 - Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable. • Level 3 - Instruments whose significant value drivers are unobservable. The tables below present the balances of assets measured at fair value on a recurring basis (there were no transfers between Level 1, Level 2 and Level 3 recurring measurements) at September 30, 2018 and December 31, 2017 : Fair Value Measurements at September 30, 2018 Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (In thousands) Investments available-for-sale: Mortgage-backed investments: Fannie Mae $ 25,334 $ — $ 25,334 $ — Freddie Mac 5,212 — 5,212 — Ginnie Mae 21,979 — 21,979 — Other 6,015 — 6,015 — Municipal bonds 10,466 — 10,466 — U.S. Government agencies 48,718 — 48,718 — Corporate bonds 23,144 — 23,144 — Total available-for-sale 140,868 — 140,868 — Derivative fair value asset 2,454 — 2,454 — Total $ 143,322 $ — $ 143,322 $ — Fair Value Measurements at December 31, 2017 Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (In thousands) Investments available-for-sale: Mortgage-backed investments: Fannie Mae $ 26,564 $ — $ 26,564 $ — Freddie Mac 5,472 — 5,472 — Ginnie Mae 21,576 — 21,576 — Municipal bonds 13,395 — 13,395 — U.S. Government agencies 42,633 — 42,633 — Corporate bonds 22,602 — 22,602 — Total available-for-sale 132,242 — 132,242 — Derivative fair value asset 1,526 — 1,526 — Total $ 133,768 $ — $ 133,768 $ — The estimated fair value of Level 2 investments is based on quoted prices for similar investments in active markets, identical or similar investments in markets that are not active and model-derived valuations whose inputs are observable. The tables below present the balances of assets measured at fair value on a nonrecurring basis at September 30, 2018 and December 31, 2017 : Fair Value Measurements at September 30, 2018 Fair Value Quoted Prices in Significant Significant (In thousands) Impaired loans (included in loans (1) $ 13,609 $ — $ — $ 13,609 OREO 483 — — 483 Total $ 14,092 $ — $ — $ 14,092 _____________ (1) Total fair value of impaired loans is net of $93,000 of specific reserves on performing TDRs. Fair Value Measurements at December 31, 2017 Fair Value Quoted Prices in Significant Significant (In thousands) Impaired loans (included in loans (1) $ 17,849 $ — $ — $ 17,849 OREO 483 — — 483 Total $ 18,332 $ — $ — $ 18,332 _____________ (1) Total fair value of impaired loans is net of $135,000 of specific reserves on performing TDRs. The fair value of impaired loans reflects the exit price and is calculated using the collateral value method or on a discounted cash flow basis. Inputs used in the collateral value method include appraised values, less estimated costs to sell. Some of these inputs may not be observable in the marketplace. Appraised values may be discounted based on management’s knowledge of the marketplace, subsequent changes in market conditions, or management’s knowledge of the borrower. OREO properties are measured at the lower of their carrying amount or fair value, less estimated costs to sell. Fair values are generally based on third party appraisals of the property, resulting in a Level 3 classification. In cases where the carrying amount exceeds the fair value, less estimated costs to sell, an impairment loss is recognized. The following tables present quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at September 30, 2018 and December 31, 2017 : September 30, 2018 Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) (Dollars in thousands) Impaired Loans $ 13,609 Market approach Appraised value discounted by market or borrower conditions 0.0% OREO $ 483 Market approach Appraised value less selling costs 0.0% December 31, 2017 Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) (Dollars in thousands) Impaired Loans $ 17,849 Market approach Appraised value discounted by market or borrower conditions 0.0% OREO $ 483 Market approach Appraised value less selling costs 0.0% The carrying amounts and estimated fair values of financial instruments were as follows at the dates indicated: September 30, 2018 Estimated Fair Value Measurements Using: Carrying Value Fair Value Level 1 Level 2 Level 3 (In thousands) Financial Assets: Cash on hand and in banks $ 7,167 $ 7,167 $ 7,167 $ — $ — Interest-earning deposits with banks 19,094 19,094 19,094 — — Investments available-for-sale 140,868 140,868 — 140,868 — Loans receivable, net 995,557 977,320 — — 977,320 FHLB stock 7,410 7,410 — 7,410 — Accrued interest receivable 4,664 4,664 — 4,664 — Derivative fair value asset 2,454 2,454 — 2,454 — Financial Liabilities: Deposits 440,265 440,265 440,265 — — Certificates of deposit, retail 373,931 370,948 — 370,948 — Certificates of deposit, brokered 102,083 101,812 — 101,812 — Advances from the FHLB 149,000 145,108 — 145,108 — Accrued interest payable 541 541 — 541 — December 31, 2017 Estimated Fair Value Measurements Using: Carrying Value Fair Value Level 1 Level 2 Level 3 (In thousands) Financial Assets: Cash on hand and in banks $ 9,189 $ 9,189 $ 9,189 $ — $ — Interest-earning deposits with banks 6,942 6,942 6,942 — — Investments available-for-sale 132,242 132,242 — 132,242 — Loans receivable, net 988,662 980,578 — — 980,578 FHLB stock 9,882 9,882 — 9,882 — Accrued interest receivable 4,084 4,084 — 4,084 — Derivative fair value asset 1,526 1,526 — 1,526 — Financial Liabilities: Deposits 430,750 430,750 430,750 — — Certificates of deposit, retail 333,264 331,199 — 331,199 — Certificates of deposit, brokered 75,488 74,947 — 74,947 — Advances from the FHLB 216,000 214,477 — 214,477 — Accrued interest payable 326 326 — 326 — Fair value estimates are measured at the exit price notion. The methods and calculation assumptions are set forth below for the Company’s financial instruments: • Financial instruments with book value equal to fair value: The fair value of financial instruments that are short-term or reprice frequently and that have little or no risk are considered to have a fair value equal to book value. These instruments include cash on hand and in banks, interest-earning deposits with banks, FHLB stock, accrued interest receivable and accrued interest payable. FHLB stock is not publicly-traded, however it may be redeemed on a dollar-for-dollar basis, for any amount the Bank is not required to hold, subject to the FHLB’s discretion. The fair value is therefore equal to the book value. • Investments available-for-sale: The fair value of all investments, excluding FHLB stock, was based upon quoted market prices for similar investments in active markets, identical or similar investments in markets that are not active and model-derived valuations whose inputs are observable. • Loans receivable: Prior to the adoption of ASU 2016-01, loan fair value estimates were primarily calculated using discounted cash flows. With the adoption of ASU 2016-01, the fair value of loans receivable at September 30, 2018 were calculated from inputs reflective of current market pricing for similar instruments, to include current origination spreads, liquidity premiums, and credit adjustments. The fair value of nonperforming loans is estimated using the fair value of the underlying collateral. • Derivatives: The fair value of derivatives is based on dealer quotes, pricing models, discounted cash flow methodologies or similar techniques for which the determination of fair value may require significant management judgment or estimation. • Liabilities: The fair value of deposits with no stated maturity, such as statement savings, interest-bearing checking and money market accounts, is equal to the amount payable on demand. The fair value of certificates of deposit is based on the discounted value of contractual cash flows using current interest rates for certificates of deposit with similar remaining maturities. The fair value of FHLB advances is estimated based on discounting the future cash flows using current interest rates for debt with similar remaining maturities. • Off balance sheet commitments: No fair value adjustment is necessary for commitments made to extend credit, which represents commitments for loan originations or for outstanding commitments to purchase loans. These commitments are at variable rates, are for loans with terms of less than one year and have interest rates which approximate prevailing market rates, or are set at the time of loan closing. Fair value estimates are based on existing balance sheet financial instruments without attempting to estimate the value of anticipated future business. The fair value has not been estimated for assets and liabilities that are not considered financial instruments.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Derivatives The Company uses a derivative financial instrument, which qualifies as a cash flow hedge, to manage the risk of changes in future cash flows due to interest rate fluctuations. The hedged instrument is a $50.0 million three-month FHLB advance that will be renewed every three months at the fixed interest rate at that time. The agreement has a five-year term and stipulates that the counterparty will pay the Company interest at three-month LIBOR and the Company will pay fixed interest of 1.34% on the $50.0 million notional amount. The Company pays or receives the net interest amount quarterly and includes this amount as part of interest expense on the Consolidated Income Statement. Quarterly, the effectiveness evaluation is based upon the fluctuation of the interest the Company pays to the FHLB for the hedge instrument as compared to the three-month LIBOR interest received from the counterparty. At September 30, 2018 , the fair value of the cash flow hedge of $2.5 million was reported with other assets. The tax effected amount of $1.9 million was included in Accumulated Other Comprehensive Income. There were no amounts recorded in the Consolidated Income Statements for the quarters ended September 30, 2018 or 2017 , related to ineffectiveness. Fair value for this derivative instrument, which generally changes as a result of changes in the level of market interest rates, is estimated based on dealer quotes and secondary market sources. The following table presents the fair value of this derivative instrument as of September 30, 2018 and December 31, 2017 : Balance Sheet Location Fair Value at September 30, 2018 Fair Value at December 31, 2017 (In thousands) Interest rate swap on FHLB debt designated as cash flow hedge Other Assets $ 2,454 $ 1,526 Total derivatives $ 2,454 $ 1,526 The following table presents the effect of this derivative instrument on the Consolidated Statements of Comprehensive Income for the quarters ended September 30, 2018 , and December 31, 2017 : Balance Sheet Location Amount Recognized in OCI at September 30, 2018 Amount Recognized in OCI at December 31, 2017 (In thousands) Interest rate swap on FHLB debt Other assets $ 70 $ 125

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation In June 2016, First Financial Northwest’s shareholders approved the First Financial Northwest, Inc. 2016 Equity Incentive Plan (“2016 Plan”). This plan provides for the granting of incentive stock options (“ISO”), non-qualified stock options (“NQSO”), restricted stock and restricted stock units until June 2026. The 2016 Plan established 1,400,000 shares available to grant with a maximum of 400,000 of these shares available to grant as restricted stock awards. Each share issued as a restricted stock award counts as two shares towards the total shares available to award. Under the 2016 Plan, the vesting date for each option award or restricted stock award is determined by an award committee and specified in the award agreement. In the case of restricted stock awards granted in lieu of cash payments of directors’ fees, the grant date is used as the vesting date unless the award agreement provides otherwise. As a result of the approval of the 2016 Plan, the First Financial Northwest, Inc. 2008 Equity Incentive Plan (“2008 Plan”) was frozen and no additional awards will be made. At September 30, 2018, there were no unvested shares of restricted stock awards under the 2008 Plan. In addition, 43,000 stock options granted under the 2008 Plan are expected to vest and be available for exercise, and an additional 272,000 stock options from the 2008 Plan were available for exercise at September 30, 2018, subject to the 2008 Plan provisions. At September 30, 2018 , there were 1,290,670 total shares available for grant under the 2016 Plan, including 345,335 shares available to be granted as restricted stock. For the three months ended September 30, 2018 and 2017 , total compensation expense for both the 2008 and 2016 Plans was $130,000 and $104,000 , respectively, and the related income tax benefit was $27,000 and $36,000 , respectively. For the nine months ended September 30, 2018 and 2017, total compensation expense for both the 2008 and 2016 Plans was $539,000 and $505,000 , respectively, and the related income tax benefit was $113,000 and $177,000 , respectively. Stock Options Under the 2008 Plan, stock option awards were granted with an exercise price equal to the market price of First Financial Northwest’s common stock at the grant date. These option awards have a vesting period of five years, with 20% vesting on the anniversary date of each grant date, and a contractual life of 10 years. Any unexercised stock options expires ten years after the grant date, or sooner in the event of the award recipient’s death, disability or termination of service with the Company and the Bank. Under the 2016 Plan, the exercise price and vesting period for stock options are determined by the award committee and specified in the award agreement, however, the exercise price shall not be less than the fair market value of a share as of the grant date. Any unexercised stock option will expire 10 years after the award date or sooner in the event of the award recipient’s death, disability, retirement, or termination of service. The fair value of each option award is estimated on the grant date using a Black-Scholes 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 historical volatility of the Company’s stock price over a specified period of time is used for the expected volatility assumption. First Financial Northwest bases the risk-free interest rate on the U.S. Treasury Constant Maturity Indices in effect on the date of the grant. First Financial Northwest elected to use 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 the midpoint. Under certain conditions, a cashless exercise of vested stock options may occur by the option holder surrendering the number of options valued at the current stock price at the time of exercise to cover the total cost to exercise. The surrendered options are canceled and are unavailable for reissue. A summary of the Company’s stock option plan awards and activity for the three and nine months ended September 30, 2018 , follows: For the Three Months Ended September 30, 2018 Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Outstanding at July 1, 2018 315,000 $ 10.34 $ 2,891,350 Exercised — Outstanding at September 30, 2018 315,000 10.34 5.24 1,962,100 Vested and expected to vest assuming a 3% forfeiture 313,710 10.33 5.23 1,956,260 Exercisable at September 30, 2018 272,000 10.07 5.02 1,767,430 For the Nine Months Ended September 30, 2018 Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Outstanding at January 1, 2018 452,940 $ 10.21 $ 2,402,096 Exercised (137,940 ) 9.90 1,112,026 Outstanding at September 30, 2018 315,000 10.34 5.24 1,962,100 Vested and expected to vest assuming a 3% forfeiture rate over the vesting term 313,710 10.33 5.23 1,956,260 Exercisable at September 30, 2018 272,000 10.07 5.02 1,767,430 As of September 30, 2018 , there was $144,000 of total unrecognized compensation cost related to nonvested stock options granted under the 2008 Plan. The cost is expected to be recognized over the remaining weighted-average vesting period of 1.55 years. There were no stock options granted during the nine months ended September 30, 2018 . Restricted Stock Awards The 2008 Plan authorized the grant of restricted stock awards to directors, advisory directors, officers and employees. Compensation expense is recognized over the vesting period of the awards based on the fair value of the stock at the grant date. The restricted stock awards’ fair value is equal to the stock price on the grant date. Shares awarded under this plan as restricted stock vest ratably over a five -year period beginning at the grant date with 20% vesting on the anniversary date of each grant date. The final vesting of shares previously granted under the 2008 Plan occurred during the quarter ended September 30, 2018. The 2016 Plan authorizes the grant of restricted stock awards subject to vesting periods or terms as defined by the award committee and specified in the award agreement. Restricted stock awards granted in lieu of cash payments for directors’ fees are subject to immediate vesting on the grant date unless the award agreement provides otherwise. A summary of changes in nonvested restricted stock awards for the three and nine months ended September 30, 2018 , follows: For the Three Months Ended September 30, 2018 Shares Weighted-Average Nonvested at July 1, 2018 25,987 $ 14.93 Granted — — Vested (5,000 ) 10.88 Nonvested at September 30, 2018 20,987 15.90 Expected to vest assuming a 3% forfeiture rate over the vesting term 20,357 15.90 For the Nine Months Ended September 30, 2018 Shares Weighted-Average Nonvested at January 1, 2018 5,000 10.88 Granted 30,179 17.14 Vested (14,192 ) 16.77 Nonvested at September 30, 2018 20,987 15.90 Expected to vest assuming a 3% forfeiture rate over the vesting term 20,357 15.90 As of September 30, 2018 , there was $138,000 of total unrecognized compensation costs related to nonvested shares granted as restricted stock awards. The cost is expected to be recognized over the remaining weighted-average vesting period of five months .

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Per the provisions of FASB ASC 260, Earnings Per Share , nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are participating securities and are included in the computation of EPS pursuant to the two-class method. The two-class method is an earnings allocation formula that determines earnings per share for each class of common stock and participating security according to dividends declared (or accumulated) and participation rights in undistributed earnings. ESOP shares are considered outstanding for basic and diluted earnings per share when the shares are committed to be released. Certain of the Company’s nonvested restricted stock awards qualify as participating securities. Net income is allocated between the common stock and participating securities pursuant to the two-class method, based on their rights to receive dividends, participate in earnings, or absorb losses. Basic earnings per common shares is computed by dividing net earnings available to common shareholders by the weighted-average number of common shares outstanding during the period, excluding participating nonvested restricted shares. The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (Dollars in thousands, except share data) Net income $ 2,792 $ 1,861 $ 12,736 $ 6,073 Less: Earnings allocated to participating (5 ) (2 ) $ (24 ) $ (6 ) Earnings allocated to common shareholders $ 2,787 $ 1,859 $ 12,712 $ 6,067 Basic weighted average common shares 10,356,994 10,287,663 10,280,287 10,323,459 Dilutive stock options 101,350 126,044 117,645 142,755 Dilutive restricted stock grants 10,458 13,331 7,383 13,847 Diluted weighted average common shares outstanding 10,468,802 10,427,038 10,405,315 10,480,061 Basic earnings per share $ 0.27 $ 0.18 $ 1.24 $ 0.59 Diluted earnings per share $ 0.27 $ 0.18 $ 1.22 $ 0.58 Potential dilutive shares are excluded from the computation of earnings per share if their effect is anti-dilutive. For the three and nine months ended September 30, 2018 , and September 30, 2017, there were no options to purchase shares of common stock that were omitted from the computation of diluted earnings per share because their effect would be anti-dilutive.

Branch Acquisition

Branch Acquisition	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Branch Acquisition	Branch Acquisition On August 25, 2017, First Financial Northwest Bank completed the acquisition of four branches from Opus Bank, a California state-chartered commercial bank. The Branch Acquisition included four retail branches located in Woodinville, Clearview, Lake Stevens, and Smokey Point, Washington. The Bank acquired $74.7 million of retail deposits, prior to the fair value adjustment, one owned bank branch, three leased branches, and certain fixed assets at these branches. The purchase price of the Branch Acquisition paid by the Bank included a deposit premium of 3.125% of the average daily balance of acquired deposits for 20 days prior to the closing date, or $2.5 million ; 80% of the fair market value of the owned branch, or $488,000 ; the net book value of fixed assets, or $56,000 ; and $14,000 for other pro rations and adjustments as of the closing date. Opus Bank paid the Bank $71.6 million in cash for the difference between these amounts and the total deposits assumed. The Branch Acquisition was accounted for under the acquisition method of accounting, and accordingly, the assets received and liabilities assumed were recorded at their fair market value as of August 25, 2017. The application of the acquisition method of accounting resulted in recognition of a core deposit intangible asset (“CDI”) of $1.3 million and goodwill of $889,000 . The acquired CDI has been determined to have a useful life of approximately ten years and is amortized on an accelerated basis. Goodwill is not amortized but will be evaluated for impairment on an annual basis, or more often if circumstances dictate, to determine if the carrying value remains appropriate. The operating results of the Company include the operating results produced by the acquired liabilities and additional branch locations. For illustrative purposes, the following table provides certain unaudited pro forma information for the three and nine months ended September 30, 2017, with the information calculated as if the four Opus branches had been acquired as of January 1, 2017, the beginning of the year prior to the date of acquisition. The pro forma information is an estimate of the additional interest expense, noninterest income and noninterest expense that might have been incurred during this period. The unaudited pro forma statement does not include interest income earned on the investment of the acquired funds into either loans receivable or available-for-sale investment securities. Actual results would have differed from the unaudited pro forma information presented. Unaudited Pro Forma Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 (In thousands except share data) Total revenues (net interest income plus noninterest income) $ 9,954 $ 28,845 Net income 1,514 4,976 Earnings per share - basic 0.15 0.48 Earnings per share - diluted 0.14 0.47 The Company recognized no acquisition related expenses for the three months ended September 30, 2018, and $6,000 for the nine months ended September 30, 2018. For the three and nine months ended September 30, 2017, the Company recognized $222,000 and $542,000 , respectively. The following table includes noninterest expenses for the four acquired branches for the three and nine months ended September 30, 2018. These expenses are included in the Consolidated Income Statements in Item 1 of this report: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 (In thousands) Salaries and employee benefits $ 251 $ 792 Occupancy and equipment 91 309 Data processing 1 1 Marketing 7 23 Other general and administrative 15 58 Total noninterest expense $ 365 $ 1,183

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition In accordance with Topic 606, revenues are recognized when goods or services are transferred to the customer in exchange for the consideration the Company expects to be entitled to receive. To determine the appropriate recognition of revenue for transactions within the scope of Topic 606, the Company performs the following five steps: (i) identify the contract(s) with the customer; (ii) identify the separate performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the separate performance obligations in the contract; and (v) recognize revenue when the entity satisfies a performance obligation. A contract may not exist if there are doubts as to collectability of the amounts the Company is entitled to in exchange for the goods or services transferred. If a contract is determined to be within the scope of Topic 606, the Company recognizes revenue as it satisfies a performance obligation. The largest portion of the Company’s revenue is from net interest income which is not within the scope of Topic 606. Disaggregation of Revenue The following table includes the Company’s noninterest income disaggregated by type of service for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 (In thousands) Gain (loss) on sale of investments (1) $ 1 $ 47 $ (20 ) $ 103 BOLI change in cash surrender value (1) 245 173 718 490 Wealth management revenue 145 252 400 699 Deposit related fees 63 56 197 155 Debit card and ATM fees 104 57 306 122 Loan related fees 163 61 353 215 Loan interest swap fees 110 83 180 205 Other 10 2 16 8 Total noninterest income $ 841 $ 731 $ 2,150 $ 1,997 _______________ (1) Not within scope of Topic 606 For the three and nine months ended September 30, 2018, substantially all of the Company’s revenues under the scope of Topic 606 are for performance obligations satisfied at a specified date. Revenues recognized within scope of Topic 606 Wealth management revenue: Our wealth management revenue consists of commissions received on the investment portfolio managed by Bank personnel but held by a third party. Commissions are earned on brokerage services and advisory services based on contract terms at the onset of a new customer’s investment agreement or quarterly for ongoing services. Commissions are paid by the third party to the Bank when the performance obligation has been completed by both entities. Deposit related fees: Fees are earned on our deposit accounts for various products or services performed for our customers. Fees include business account fees, non-sufficient fund fees, stop payment fees, wire services, safe deposit box, and others. These fees are recognized on a daily or monthly basis, depending on the type of service. Debit card and ATM fees: Fees are earned when a debit card issued by the Bank is used or when other bank’s customers use our ATM services. Revenue is recognized at the time the fees are collected from the customer’s account or remitted by the VISA interchange network. Loan related fees: Noninterest fee income is earned on our loans for servicing or annual fees on certain loan types. Loan interest swap fees: For loans participating in an interest rate swap agreement, fees are earned at the onset of the agreement and are not contingent on any future performance or term length of the loan itself. The performance obligation is satisfied by entering into the contract and receipt of the fees from the counterparty. Other: Fees earned on other services, such as merchant services or occasional non-recurring type services, are recognized at the time of the event or the applicable billing cycle. Contract Balances At September 30, 2018, the Company had no contract liabilities where the Company had an obligation to transfer goods or services for which the Company had already received consideration. In addition, the Company had no material performance obligations as of this date.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 25, 2018, the Company announced that the Company’s Board of Directors declared a quarterly cash dividend of $ 0.08 per share on the Company’s outstanding common stock. The cash dividend will be payable on December 14, 2018, to shareholders of record as of the close of business on November 30, 2018. Also on October 25, 2018, the Board of Directors authorized the repurchase of approximately 5% of the Company’s common stock, or 550,000 shares. The plan allows for the repurchase from November 5, 2018 through May 3, 2019, under a pre-arranged stock trading plan in accordance with guidelines specified under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. Repurchases under the Company’s Rule 10b5-1 plan will be administered through an independent broker subject to SEC requirements as well as certain price, market volume, and timing constraints as specified in the plan. As a result, there can be no assurance as to the exact number of shares, if any, that will be repurchased under the plan.

Recently Issued Accounting Pr_2

Recently Issued Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements Adopted in 2018 In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers (Topic 606) . In August 2015, FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606) which postponed the effective date of 2014-09. Subsequently, in March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations. This amendment clarifies that an entity should determine if it is the principal or the agent for each specified good or service promised in a contract with a customer. In April 2016, the FASB issued ASU No. 2016-10 , Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing. The core principle of Topic 606 is that an entity must recognize revenue when it has satisfied a performance obligation of transferring promised goods or services to a customer. These standards were effective for interim and annual periods beginning after December 15, 2017. The Company has analyzed its sources of noninterest income to determine when the satisfaction of the performance obligation occurs and the appropriate recognition of revenue. The adoption of these ASUs did not have a material impact on the Company’s consolidated financial statements. For more discussion on this topic, see Note 12 - Revenue Recognition in this report. In January 2016, FASB issued ASU No. 2016-01, Financial Instruments - Overall, Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. In addition, the amendments in this ASU require an entity to disclose the fair value of its financial instruments using the exit price notion. Exit price is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The amendments in this ASU were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company has updated the fair value disclosure on Note 7 in this report to reflect adoption of this standard, to include using the exit price notion in the fair value disclosure of financial instruments. The adoption of ASU 2016-01 did not have a material impact on the Company’s consolidated financial statements. In August 2016, FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU addresses the appropriate classification of eight specific cash flow issues on the cash flow statement. Debt prepayment costs should be classified as an outflow for financing activities. Settlement of zero-coupon debt instruments divides the interest portion as an outflow for operating activities and the principal portion as an outflow for financing activities. Contingent consideration payments made after a business combination should be classified as outflows for financing and operating activities. Proceeds from the settlement of bank-owned life insurance policies should be classified as inflows from investing activities. Other specific areas are identified in the ASU as to the appropriate classification of the cash inflows or outflows. The amendments in this ASU were effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company does not currently have items on its cash flow statement that were impacted by adoption of this ASU and therefore adoption of ASU 2016-15 did not have a material impact on the Company’s consolidated financial statements. In January 2017, FASB issued ASU 2017-01, Business Combinations (Topic 805). This ASU clarifies the definition of a business to assist in determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The amendments in this ASU provide a screen to determine when a set of assets and activities is not a business, thereby reducing the number of transactions requiring further evaluation. If the screen is not met, the amendments in this ASU further provide a framework to evaluate if the criteria is present to qualify for a business. This ASU was effective for annual periods beginning after December 15, 2017. Adoption of ASU 2017-01 did not have a material impact on the Company’s consolidated financial statements. In May 2017, FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. The ASU was issued to provide clarity as to when to apply modification accounting when there is a change in the terms or conditions of a share-based payment award. According to this ASU, an entity should account for the effects of a modification unless the fair value, vesting conditions, and balance sheet classification of the award is the same after the modification as compared to the original award prior to the modification. This ASU was effective for reporting periods beginning after December 15, 2017. The Company has not had any modifications on share-based payment awards and therefore the adoption of ASU No. 2017-09 did not have a material impact on the Company’s consolidated financial statements. In February 2018, FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220). This ASU was issued to allow a reclassification from accumulated other comprehensive income to retained earnings from stranded tax effects resulting from the revaluation of the net deferred tax asset (“DTA”) to the new corporate tax rate of 21% as a result of the Tax Cuts and Jobs Act (“Tax Act”). This ASU is effective for reporting periods beginning after December 15, 2018, with early adoption permitted. The Company adopted this ASU as of December 31, 2017, which resulted in reclassifying a net unrealized gain from the change in tax rate with an increase to accumulated other comprehensive income and a decrease to retained earnings by $41,000, respectively. In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740). This ASU was issued to provide guidance on the income tax accounting implications of the Tax Act and allows for entities to report provisional amounts for specific income tax effects of the Act for which the accounting under Topic 740 was not yet complete but a reasonable estimate could be determined. A measurement period of one-year is allowed to complete the accounting effects under Topic 740 and revise any previous estimates reported. Any provisional amounts or subsequent adjustments included in an entity’s financial statements during the measurement period should be included in income from continuing operations as an adjustment to tax expense in the reporting period the amounts are determined. The Company adopted this ASU with the provisional adjustments as reported in the Consolidated Financial Statements included in the 2017 Form 10-K. As of September 30, 2018, the Company did not incur any adjustments to the provisional recognition. In June 2018, FASB issued ASU No. 2018-07, Compensation - Stock Compensation (Topic 718). This ASU was issued to expand the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees. Previously, these awards were recorded at the fair value of consideration received or the fair value of the equity instruments issued and was measured as the earlier of the commitment date or date performance was completed. The amendments in this ASU require the awards to be measured at the grant-date fair value of the equity instrument. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted once the entity has adopted Topic 606. The Company has adopted this ASU with the nonemployee share-based payment awards granted in June 2018, with no material impact on the Company’s consolidated financial statements. Recent Accounting Pronouncements In February 2016, FASB issued ASU No. 2016-02, Leases (Topic 842) . ASU No. 2016-02 requires lessees to recognize on the balance sheet the assets and liabilities arising from operating leases. In July 2018, FASB issued ASU No. 2018-11, Leases (Topic 842) to address the comparative reporting requirements when this ASU is adopted. Under this ASU, a lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term. A lessee should include payments to be made in an optional period only if the lessee is reasonably certain to exercise an option to extend the lease or not to exercise an option to terminate the lease. For a finance lease, interest payments should be recognized separately from amortization of the right-of-use asset in the statement of comprehensive income. For operating leases, the lease cost should be allocated over the lease term on a generally straight-line basis. The amendments in ASU 2016-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. According to ASU 2018-11, the Company may recognize the cumulative-effect adjustment to the opening balance of retained earnings at the time ASU 2016-02 is adopted. Early application of the amendments in the ASU is permitted. The effect of the adoption will depend on leases at the time of adoption. Once adopted, we expect to report higher assets and liabilities as a result of including right-of-use assets and lease liabilities related to certain banking offices under noncancelable operating lease agreements, however, based on current leases, the adoption is expected to increase our consolidated balance sheets by less than 5% and not to have a material impact on our regulatory capital ratios. In June 2016, FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). This ASU replaces the existing incurred loss impairment methodology that recognizes credit losses when a probable loss has been incurred with new methodology where loss estimates are based upon lifetime expected credit losses. The amendments in this ASU require a financial asset that is measured at amortized cost to be presented at the net amount expected to be collected. The income statement would then reflect the measurement of credit losses for newly recognized financial assets as well as changes to the expected credit losses that have taken place during the reporting period. The measurement of expected credit losses will be based on historical information, current conditions, and reasonable and supportable forecasts that impact the collectability of the reported amount. Available-for-sale securities will bifurcate the fair value mark and establish an allowance for credit losses through the income statement for the credit portion of that mark. The interest portion will continue to be recognized through accumulated other comprehensive income or loss. The change in allowance recognized as a result of adoption will occur through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the ASU is adopted. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, with early adoption permitted for fiscal years beginning after December 15, 2018. The Company is evaluating our current expected loss methodology of our loan and investment portfolios to identify the necessary modifications in accordance with this standard and expects a change in the processes and procedures to calculate the ALLL, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. A valuation adjustment to our ALLL or investment portfolio that is identified in this process will be reflected as a one-time adjustment in equity rather than earnings. We are in the process of compiling historical data that will be used to calculate expected credit losses on our loan portfolio to ensure we are fully compliant with the ASU at the adoption date and are evaluating the potential impact adoption of this ASU will have on our consolidated financial statements. The Company intends to adopt ASU 2016-13 in the first quarter of 2020, and as a result, we expect our allowance for loan losses to increase. Until our evaluation is complete, however, the magnitude of the increase will not be known. In January 2017, FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350). This ASU simplifies the impairment calculation for subsequent measurement of goodwill by eliminating the step of comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. Under the amendments in this ASU, an entity will evaluate the carrying amount of a reporting unit to its fair value, as if the reporting unit had been acquired in a business combination. An impairment charge should be recognized for the amount that the carrying amount exceeds the fair value, not to exceed the amount of goodwill. The income tax effect should be considered for any tax deductible goodwill when measuring the impairment loss. The amendments in this ASU are effective for goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for reporting periods after January 1, 2017. The Company recognized goodwill from its recent acquisition on August 25, 2017 of four branches from Opus Bank, a California state-chartered commercial bank (the “Branch Acquisition”) and expects to early adopt this ASU for the annual goodwill impairment test in 2018. Adoption of ASU 2017-04 is not expected to have a material impact on the Company’s consolidated financial statements. In March 2017, FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities . The ASU shortens the amortization period for certain callable debt securities held at a premium. The standard will take effect for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is currently evaluating its available-for-sale securities that fit the criteria of this ASU but has not yet quantified the impact. The adoption of ASU No. 2017-08 is not expected to have a material impact on the Company's consolidated financial statements. In August 2017, FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815). This ASU was issued to provide investors better insight to an entity’s risk management hedging strategies by permitting companies to recognize the economic results of its hedging strategies in its financial statements. The amendments in this ASU permit hedge accounting for hedging relationships involving non-financial risk and interest rate risk by removing certain limitations in cash flow and fair value hedging relationships. In addition, the ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. This ASU is effective for fiscal years beginning after December 15, 2018, and early adoption is permitted. The Company intends to adopt this ASU during 2018, however its current cash flow hedge will not likely be impacted by the adoption of ASU 2017-12, and consequently, is not expected to have a material impact on the Company’s consolidated financial statements.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Available-for-sale Securities	Investments available-for-sale are summarized as follows at the dates indicated: September 30, 2018 Amortized Gross Gross Fair Value (In thousands) Mortgage-backed investments: Fannie Mae $ 26,488 $ 11 $ (1,165 ) $ 25,334 Freddie Mac 5,372 1 (161 ) 5,212 Ginnie Mae 23,500 — (1,521 ) 21,979 Other 6,028 — (13 ) 6,015 Municipal bonds 10,640 5 (179 ) 10,466 U.S. Government agencies 49,564 79 (925 ) 48,718 Corporate bonds 23,490 245 (591 ) 23,144 Total $ 145,082 $ 341 $ (4,555 ) $ 140,868 December 31, 2017 Amortized Gross Gross Fair Value (In thousands) Mortgage-backed investments: Fannie Mae $ 26,961 $ 69 $ (466 ) $ 26,564 Freddie Mac 5,510 18 (56 ) 5,472 Ginnie Mae 22,288 14 (726 ) 21,576 Municipal bonds 13,126 290 (21 ) 13,395 U.S. Government agencies 43,088 81 (536 ) 42,633 Corporate bonds 22,502 527 (427 ) 22,602 Total $ 133,475 $ 999 $ (2,232 ) $ 132,242
Schedule of Available for sale Securities in Continuous Unrealized Loss positions	The tables below summarize the aggregate fair value and gross unrealized loss by length of time those investment securities have been continuously in an unrealized loss position at the dates indicated: September 30, 2018 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss (In thousands) Mortgage-backed investments: Fannie Mae $ 11,129 $ (238 ) $ 13,736 $ (927 ) $ 24,865 $ (1,165 ) Freddie Mac 5,102 (161 ) — — 5,102 (161 ) Ginnie Mae 6,951 (207 ) 15,028 (1,314 ) 21,979 (1,521 ) Other 6,015 (13 ) — — 6,015 (13 ) Municipal bonds 6,378 (134 ) 963 (45 ) 7,341 (179 ) U.S. Government agencies 32,551 (708 ) 6,451 (217 ) 39,002 (925 ) Corporate bonds 993 (7 ) 6,916 (584 ) 7,909 (591 ) Total $ 69,119 $ (1,468 ) $ 43,094 $ (3,087 ) $ 112,213 $ (4,555 ) December 31, 2017 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss Fair Value Gross Unrealized Loss (In thousands) Mortgage-backed investments: Fannie Mae $ 15,202 $ (91 ) $ 6,759 $ (375 ) $ 21,961 $ (466 ) Freddie Mac 3,189 (56 ) — — 3,189 (56 ) Ginnie Mae 6,454 (61 ) 14,234 (665 ) 20,688 (726 ) Municipal bonds 1,403 (21 ) — — 1,403 (21 ) U.S. Government agencies 33,268 (435 ) 1,800 (101 ) 35,068 (536 ) Corporate bonds 1,499 (1 ) 7,074 (426 ) 8,573 (427 ) Total $ 61,015 $ (665 ) $ 29,867 $ (1,567 ) $ 90,882 $ (2,232 )
Schedule of Available for sale Securities, Debt Maturities	September 30, 2018 Amortized Cost Fair Value (In thousands) Due within one year $ 253 $ 251 Due after one year through five years 7,655 7,725 Due after five years through ten years 19,673 19,196 Due after ten years 56,113 55,156 83,694 82,328 Mortgage-backed investments 61,388 58,540 Total $ 145,082 $ 140,868

Loans Receivable_ Schedule of A

Loans Receivable: Schedule of Accounts, Notes, Loans and Financing Receivable (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans receivable are summarized as follows at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family residential: Permanent owner occupied $ 184,698 $ 148,304 Permanent non-owner occupied 143,226 130,351 327,924 278,655 Multifamily 176,521 184,902 Commercial real estate 360,485 361,842 Construction/land: One-to-four family residential 84,912 87,404 Multifamily 80,607 108,439 Commercial 21,385 5,325 Land 7,113 36,405 194,017 237,573 Business 29,655 23,087 Consumer 12,419 9,133 Total loans 1,101,021 1,095,192 Less: Loans in process ("LIP") 91,232 92,498 Deferred loan fees, net 1,116 1,150 Allowance for loan and lease losses ("ALLL") 13,116 12,882 Loans receivable, net $ 995,557 $ 988,662 At September 30, 2018 , loans totaling $475.9 million were pledged to secure borrowings from the FHLB of Des Moines compared to $422.6 million at December 31, 2017 .
Schedule of Allowance for Loan and Lease Losses, Roll Forward	The following tables summarize changes in the ALLL and loan portfolio by loan type and impairment method at the dates and for the periods shown: At or For the Three Months Ended September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 3,265 $ 1,928 $ 4,494 $ 2,121 $ 674 $ 272 $ 12,754 Recoveries 2 — — 160 — — 162 Provision (recapture) 265 (189 ) (16 ) (84 ) 236 (12 ) 200 Ending balance $ 3,532 $ 1,739 $ 4,478 $ 2,197 $ 910 $ 260 $ 13,116 At or For the Nine Months Ended September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,837 $ 1,820 $ 4,418 $ 2,816 $ 694 $ 297 $ 12,882 Recoveries 4,248 — 14 172 — — 4,434 (Recapture) provision (3,553 ) (81 ) 46 (791 ) 216 (37 ) (4,200 ) Ending balance $ 3,532 $ 1,739 $ 4,478 $ 2,197 $ 910 $ 260 $ 13,116 ALLL by category: General reserve $ 3,446 $ 1,739 $ 4,471 $ 2,197 $ 910 $ 260 $ 13,023 Specific reserve 86 — 7 — — — 93 Loans: (1) Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 Loans collectively evaluated for impairment (2) 318,353 175,405 357,335 103,009 29,655 12,330 996,087 Loans individually evaluated for impairment (3) 9,571 1,116 2,926 — — 89 13,702 ____________ (1) Net of LIP. (2) Loans collectively evaluated for general reserves. (3) Loans individually evaluated for specific reserves. At or For the Three Months Ended September 30, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,627 $ 1,231 $ 3,733 $ 2,942 $ 457 $ 295 $ 11,285 Recoveries 247 — 78 — — — 325 (Recapture) provision (157 ) 472 (68 ) 40 211 2 500 Ending balance $ 2,717 $ 1,703 $ 3,743 $ 2,982 $ 668 $ 297 $ 12,110 At or For the Nine Months Ended September 30, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (In thousands) ALLL: Beginning balance $ 2,551 $ 1,199 $ 3,893 $ 2,792 $ 237 $ 279 $ 10,951 Recoveries 280 — 78 — — 1 359 (Recapture) provision (114 ) 504 (228 ) 190 431 17 800 Ending balance $ 2,717 $ 1,703 $ 3,743 $ 2,982 $ 668 $ 297 $ 12,110 ALLL by category: General reserve $ 2,582 $ 1,703 $ 3,723 $ 2,982 $ 668 $ 297 $ 11,955 Specific reserve 135 — 20 — — — 155 Loans: (1) Total loans $ 266,447 $ 173,681 $ 319,872 $ 153,914 $ 22,243 $ 9,301 $ 945,458 Loans collectively evaluated for impairment (2) 251,141 172,541 316,656 153,914 22,243 9,205 925,700 Loans individually evaluated for impairment (3) 15,306 1,140 3,216 — — 96 19,758 _____________ (1) Net of LIP. (2) Loans collectively evaluated for general reserves. (3) Loans individually evaluated for specific reserves.
Financing Receivables, Aging of loans	The following tables represent a summary of the aging of loans by type at the dates indicated: Loans Past Due as of September 30, 2018 30-59 Days 60-89 Days 90 Days and Total Past Current Total (1) (2) (In thousands) Real estate: One-to-four family residential: Owner occupied $ 496 $ — $ — $ 496 $ 184,202 $ 184,698 Non-owner occupied — — — — 143,226 143,226 Multifamily — — — — 176,521 176,521 Commercial real estate 325 — — 325 359,936 360,261 Construction/land — — — — 103,009 103,009 Total real estate 821 — — 821 966,894 967,715 Business — — — — 29,655 29,655 Consumer — — — — 12,419 12,419 Total loans $ 821 $ — $ — $ 821 $ 1,008,968 $ 1,009,789 ________________ (1) There were no loans 90 days and greater past due and still accruing interest at September 30, 2018 . (2) Net of LIP. Loans Past Due as of December 31, 2017 30-59 Days 60-89 Days 90 Days and Total Past Current Total (1) (2) (In thousands) Real estate: One-to-four family residential: Owner occupied $ 101 $ — $ — $ 101 $ 148,203 $ 148,304 Non-owner occupied — — — — 130,351 130,351 Multifamily — — — — 184,902 184,902 Commercial real estate — — — — 361,299 361,299 Construction/land — — — — 145,618 145,618 Total real estate 101 — — 101 970,373 970,474 Business — — — — 23,087 23,087 Consumer — — — — 9,133 9,133 Total loans $ 101 $ — $ — $ 101 $ 1,002,593 $ 1,002,694 _________________ (1) There were no loans 90 days and greater past due and still accruing interest at December 31, 2017 . (2) Net of LIP.
Schedule of non-accrual loans	The following table is a summary of nonaccrual loans by loan type at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family residential $ 113 $ 128 Commercial real estate 325 — Consumer 46 51 Total nonaccrual loans $ 484 $ 179
Financing Receivables, Summary of loans by type and payment activity	The following tables summarize the loan portfolio by type and payment status at the dates indicated: September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Performing (2) $ 327,811 $ 176,521 $ 359,936 $ 103,009 $ 29,655 $ 12,373 $ 1,009,305 Nonperforming (3) 113 — 325 — — 46 484 Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 _____________ (1) Net of LIP. (2) There were $184.6 million of owner-occupied one-to-four family residential loans and $143.2 million of non-owner occupied one-to-four family residential loans classified as performing. (3) The $113,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied. December 31, 2017 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Performing (2) $ 278,527 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,082 $ 1,002,515 Nonperforming (3) 128 — — — — 51 179 Total loans $ 278,655 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,133 $ 1,002,694 _____________ (1) Net of LIP. (2) There were $148.2 million of owner-occupied one-to-four family residential loans and $130.3 million of non-owner occupied one-to-four family residential loans classified as performing. (3) The $128,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied.
Schedule Of Impaired Financing Receivables	The following tables present a summary of loans individually evaluated for impairment by loan type at the dates indicated: September 30, 2018 Recorded Investment (1) Unpaid Principal Balance (2) Related Allowance (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,045 $ 1,213 $ — Non-owner occupied 4,857 4,857 — Multifamily 1,116 1,116 — Commercial real estate 2,556 2,556 — Consumer 89 141 — Total 9,663 9,883 — Loans with an allowance: One-to-four family residential: Owner occupied 516 562 23 Non-owner occupied 3,153 3,174 63 Commercial real estate 370 370 7 Total 4,039 4,106 93 Total impaired loans: One-to-four family residential: Owner occupied 1,561 1,775 23 Non-owner occupied 8,010 8,031 63 Multifamily 1,116 1,116 — Commercial real estate 2,926 2,926 7 Consumer 89 141 — Total $ 13,702 $ 13,989 $ 93 _________________ (1) Represents the loan balance less charge-offs. (2) Contractual loan principal balance. December 31, 2017 Recorded Investment (1) Unpaid Principal Balance (2) Related Allowance (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,321 $ 1,516 $ — Non-owner occupied 8,409 8,409 — Multifamily 1,134 1,134 — Commercial real estate 1,065 1,065 — Consumer 94 144 — Total 12,023 12,268 — Loans with an allowance: One-to-four family residential: Owner occupied 522 568 5 Non-owner occupied 3,310 3,332 111 Commercial real estate 2,129 2,129 19 Total 5,961 6,029 135 Total impaired loans: One-to-four family residential: Owner occupied 1,843 2,084 5 Non-owner occupied 11,719 11,741 111 Multifamily 1,134 1,134 — Commercial real estate 3,194 3,194 19 Consumer 94 144 — Total $ 17,984 $ 18,297 $ 135 _________________ (1) Represents the loan balance less charge-offs. (2) Contractual loan principal balance.
Schedule of Impaired Financing Receivables, Average Recorded Investment and Interest Income	The following tables present the average recorded investment in loans individually evaluated for impairment and the interest income recognized for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,049 $ 18 $ 1,182 $ 55 Non-owner occupied 5,112 83 6,385 298 Multifamily 1,119 19 1,125 55 Commercial real estate 2,402 42 1,732 133 Consumer 90 2 92 6 Total 9,772 164 10,516 547 Loans with an allowance: One-to-four family residential: Owner occupied 517 9 519 26 Non-owner occupied 3,160 40 3,232 122 Commercial real estate 373 5 1,247 22 Total 4,050 54 4,998 170 Total impaired loans: One-to-four family residential: Owner occupied 1,566 27 1,701 81 Non-owner occupied 8,272 123 9,617 420 Multifamily 1,119 19 1,125 55 Commercial real estate 2,775 47 2,979 155 Consumer 90 2 92 6 Total $ 13,822 $ 218 $ 15,514 $ 717 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) Loans with no related allowance: One-to-four family residential: Owner occupied $ 1,658 $ 22 $ 1,886 $ 69 Non-owner occupied 11,395 158 13,445 485 Multifamily 1,143 19 1,251 56 Commercial real estate 2,693 49 2,818 135 Consumer 97 2 99 6 Total 16,986 250 19,499 751 Loans with an allowance: One-to-four family residential: Owner occupied 1,099 10 1,495 22 Non-owner occupied 3,343 47 3,773 128 Commercial real estate 745 10 749 31 Construction/land — — 124 — Total 5,187 67 6,141 181 Total impaired loans: One-to-four family residential: Owner occupied 2,757 32 3,381 91 Non-owner occupied 14,738 205 17,218 613 Multifamily 1,143 19 1,251 56 Commercial real estate 3,438 59 3,567 166 Construction/land — — 124 — Consumer 97 2 99 6 Total $ 22,173 $ 317 $ 25,640 $ 932
Troubled Debt Restructurings on Financing Receivables	The following tables present TDR modifications for the periods indicated and their recorded investment prior to and after the modification: Three Months Ended September 30, 2018 Nine Months Ended September 30, 2018 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (Dollars in thousands) One-to-four family residential Advancement of maturity date 1 563 563 1 563 563 Commercial Advancement of maturity date — $ — $ — 1 $ 1,124 $ 1,124 Total 1 $ 563 $ 563 2 $ 1,687 $ 1,687 Three Months Ended September 30, 2017 Nine Months Ended September 30, 2017 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment (Dollars in thousands) One-to-four family residential Principal and interest with interest rate concession and advancement of maturity date 1 $ 524 $ 524 8 $ 2,492 $ 2,492 Total 1 $ 524 $ 524 8 $ 2,492 $ 2,492
Financing Receivables, Summary of loans by type and risk category	The following tables represent a summary of loans by type and risk category at the dates indicated: September 30, 2018 One-to-Four Multifamily Commercial Construction/ Business Consumer Total (1) (In thousands) Risk Rating: Pass $ 325,509 $ 176,521 $ 359,021 $ 103,009 $ 29,655 $ 12,373 $ 1,006,088 Special mention 1,762 — 370 — — — 2,132 Substandard 653 — 870 — — 46 1,569 Total loans $ 327,924 $ 176,521 $ 360,261 $ 103,009 $ 29,655 $ 12,419 $ 1,009,789 _____________ (1) Net of LIP. December 31, 2017 One-to-Four Family Residential Multifamily Commercial Real Estate Construction/ Land Business Consumer Total (1) (In thousands) Risk Rating: Pass $ 275,653 $ 184,902 $ 358,285 $ 145,618 $ 23,087 $ 8,893 $ 996,438 Special mention 2,329 — 2,459 — — 188 4,976 Substandard 673 — 555 — — 52 1,280 Total loans $ 278,655 $ 184,902 $ 361,299 $ 145,618 $ 23,087 $ 9,133 $ 1,002,694 _____________ (1) Net of LIP.

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2018
Other Real Estate [Abstract]
Other Real Estate, Roll Forward	The following table is a summary of OREO activity during the periods shown: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Balance at beginning of period $ 483 $ 1,825 $ 483 $ 2,331 Gross proceeds from sale of OREO — — — (461 ) Gain on sale of OREO — — — 5 Market value adjustments — — — (50 ) Balance at end of period $ 483 $ 1,825 $ 483 $ 1,825

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The tables below present the balances of assets measured at fair value on a recurring basis (there were no transfers between Level 1, Level 2 and Level 3 recurring measurements) at September 30, 2018 and December 31, 2017 : Fair Value Measurements at September 30, 2018 Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (In thousands) Investments available-for-sale: Mortgage-backed investments: Fannie Mae $ 25,334 $ — $ 25,334 $ — Freddie Mac 5,212 — 5,212 — Ginnie Mae 21,979 — 21,979 — Other 6,015 — 6,015 — Municipal bonds 10,466 — 10,466 — U.S. Government agencies 48,718 — 48,718 — Corporate bonds 23,144 — 23,144 — Total available-for-sale 140,868 — 140,868 — Derivative fair value asset 2,454 — 2,454 — Total $ 143,322 $ — $ 143,322 $ — Fair Value Measurements at December 31, 2017 Fair Value Measurements Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) (In thousands) Investments available-for-sale: Mortgage-backed investments: Fannie Mae $ 26,564 $ — $ 26,564 $ — Freddie Mac 5,472 — 5,472 — Ginnie Mae 21,576 — 21,576 — Municipal bonds 13,395 — 13,395 — U.S. Government agencies 42,633 — 42,633 — Corporate bonds 22,602 — 22,602 — Total available-for-sale 132,242 — 132,242 — Derivative fair value asset 1,526 — 1,526 — Total $ 133,768 $ — $ 133,768 $ —
Schedule of balances of assets and liabilities, measured at fair value on a non-recurring basis	The tables below present the balances of assets measured at fair value on a nonrecurring basis at September 30, 2018 and December 31, 2017 : Fair Value Measurements at September 30, 2018 Fair Value Quoted Prices in Significant Significant (In thousands) Impaired loans (included in loans (1) $ 13,609 $ — $ — $ 13,609 OREO 483 — — 483 Total $ 14,092 $ — $ — $ 14,092 _____________ (1) Total fair value of impaired loans is net of $93,000 of specific reserves on performing TDRs. Fair Value Measurements at December 31, 2017 Fair Value Quoted Prices in Significant Significant (In thousands) Impaired loans (included in loans (1) $ 17,849 $ — $ — $ 17,849 OREO 483 — — 483 Total $ 18,332 $ — $ — $ 18,332 _____________ (1) Total fair value of impaired loans is net of $135,000 of specific reserves on performing TDRs.
Schedule of quantitative information about Level 3 Fair Value Measurements on a nonrecurring basis	The following tables present quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at September 30, 2018 and December 31, 2017 : September 30, 2018 Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) (Dollars in thousands) Impaired Loans $ 13,609 Market approach Appraised value discounted by market or borrower conditions 0.0% OREO $ 483 Market approach Appraised value less selling costs 0.0% December 31, 2017 Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) (Dollars in thousands) Impaired Loans $ 17,849 Market approach Appraised value discounted by market or borrower conditions 0.0% OREO $ 483 Market approach Appraised value less selling costs 0.0%
Fair Value, by Balance Sheet Grouping	The carrying amounts and estimated fair values of financial instruments were as follows at the dates indicated: September 30, 2018 Estimated Fair Value Measurements Using: Carrying Value Fair Value Level 1 Level 2 Level 3 (In thousands) Financial Assets: Cash on hand and in banks $ 7,167 $ 7,167 $ 7,167 $ — $ — Interest-earning deposits with banks 19,094 19,094 19,094 — — Investments available-for-sale 140,868 140,868 — 140,868 — Loans receivable, net 995,557 977,320 — — 977,320 FHLB stock 7,410 7,410 — 7,410 — Accrued interest receivable 4,664 4,664 — 4,664 — Derivative fair value asset 2,454 2,454 — 2,454 — Financial Liabilities: Deposits 440,265 440,265 440,265 — — Certificates of deposit, retail 373,931 370,948 — 370,948 — Certificates of deposit, brokered 102,083 101,812 — 101,812 — Advances from the FHLB 149,000 145,108 — 145,108 — Accrued interest payable 541 541 — 541 — December 31, 2017 Estimated Fair Value Measurements Using: Carrying Value Fair Value Level 1 Level 2 Level 3 (In thousands) Financial Assets: Cash on hand and in banks $ 9,189 $ 9,189 $ 9,189 $ — $ — Interest-earning deposits with banks 6,942 6,942 6,942 — — Investments available-for-sale 132,242 132,242 — 132,242 — Loans receivable, net 988,662 980,578 — — 980,578 FHLB stock 9,882 9,882 — 9,882 — Accrued interest receivable 4,084 4,084 — 4,084 — Derivative fair value asset 1,526 1,526 — 1,526 — Financial Liabilities: Deposits 430,750 430,750 430,750 — — Certificates of deposit, retail 333,264 331,199 — 331,199 — Certificates of deposit, brokered 75,488 74,947 — 74,947 — Advances from the FHLB 216,000 214,477 — 214,477 — Accrued interest payable 326 326 — 326 —

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table presents the fair value of this derivative instrument as of September 30, 2018 and December 31, 2017 : Balance Sheet Location Fair Value at September 30, 2018 Fair Value at December 31, 2017 (In thousands) Interest rate swap on FHLB debt designated as cash flow hedge Other Assets $ 2,454 $ 1,526 Total derivatives $ 2,454 $ 1,526
Derivative Instruments, Gain (Loss)	The following table presents the effect of this derivative instrument on the Consolidated Statements of Comprehensive Income for the quarters ended September 30, 2018 , and December 31, 2017 : Balance Sheet Location Amount Recognized in OCI at September 30, 2018 Amount Recognized in OCI at December 31, 2017 (In thousands) Interest rate swap on FHLB debt Other assets $ 70 $ 125

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Share-based Compensation [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	A summary of the Company’s stock option plan awards and activity for the three and nine months ended September 30, 2018 , follows: For the Three Months Ended September 30, 2018 Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Outstanding at July 1, 2018 315,000 $ 10.34 $ 2,891,350 Exercised — Outstanding at September 30, 2018 315,000 10.34 5.24 1,962,100 Vested and expected to vest assuming a 3% forfeiture 313,710 10.33 5.23 1,956,260 Exercisable at September 30, 2018 272,000 10.07 5.02 1,767,430 For the Nine Months Ended September 30, 2018 Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term in Years Aggregate Intrinsic Value Outstanding at January 1, 2018 452,940 $ 10.21 $ 2,402,096 Exercised (137,940 ) 9.90 1,112,026 Outstanding at September 30, 2018 315,000 10.34 5.24 1,962,100 Vested and expected to vest assuming a 3% forfeiture rate over the vesting term 313,710 10.33 5.23 1,956,260 Exercisable at September 30, 2018 272,000 10.07 5.02 1,767,430 A summary of changes in nonvested restricted stock awards for the three and nine months ended September 30, 2018 , follows: For the Three Months Ended September 30, 2018 Shares Weighted-Average Nonvested at July 1, 2018 25,987 $ 14.93 Granted — — Vested (5,000 ) 10.88 Nonvested at September 30, 2018 20,987 15.90 Expected to vest assuming a 3% forfeiture rate over the vesting term 20,357 15.90 For the Nine Months Ended September 30, 2018 Shares Weighted-Average Nonvested at January 1, 2018 5,000 10.88 Granted 30,179 17.14 Vested (14,192 ) 16.77 Nonvested at September 30, 2018 20,987 15.90 Expected to vest assuming a 3% forfeiture rate over the vesting term 20,357 15.90

Earnings Per Share_ Schedule of

Earnings Per Share: Schedule of Earnings Per Share Reconciliation (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Reconciliation	The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (Dollars in thousands, except share data) Net income $ 2,792 $ 1,861 $ 12,736 $ 6,073 Less: Earnings allocated to participating (5 ) (2 ) $ (24 ) $ (6 ) Earnings allocated to common shareholders $ 2,787 $ 1,859 $ 12,712 $ 6,067 Basic weighted average common shares 10,356,994 10,287,663 10,280,287 10,323,459 Dilutive stock options 101,350 126,044 117,645 142,755 Dilutive restricted stock grants 10,458 13,331 7,383 13,847 Diluted weighted average common shares outstanding 10,468,802 10,427,038 10,405,315 10,480,061 Basic earnings per share $ 0.27 $ 0.18 $ 1.24 $ 0.59 Diluted earnings per share $ 0.27 $ 0.18 $ 1.22 $ 0.58

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table includes the Company’s noninterest income disaggregated by type of service for the three and nine months ended September 30, 2018 and 2017 : Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 (In thousands) Gain (loss) on sale of investments (1) $ 1 $ 47 $ (20 ) $ 103 BOLI change in cash surrender value (1) 245 173 718 490 Wealth management revenue 145 252 400 699 Deposit related fees 63 56 197 155 Debit card and ATM fees 104 57 306 122 Loan related fees 163 61 353 215 Loan interest swap fees 110 83 180 205 Other 10 2 16 8 Total noninterest income $ 841 $ 731 $ 2,150 $ 1,997 _______________ (1

Description of Business (Narrat

Description of Business (Narrative) (Details) $ in Millions	Aug. 25, 2017USD ($)
Opus Bank [Member]
Business Acquisition [Line Items]
Retail deposits	$ 74.7

Investments_ Available-for-sale

Investments: Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Amortized Cost	$ 145,082	$ 133,475
Gross Unrealized Gains	341	999
Gross Unrealized Losses	(4,555)	(2,232)
Fair Value	140,868	132,242
Mortgage-backed investments, Fannie Mae
Amortized Cost	26,488	26,961
Gross Unrealized Gains	11	69
Gross Unrealized Losses	(1,165)	(466)
Fair Value	25,334	26,564
Mortgage-backed investments, Freddie Mac
Amortized Cost	5,372	5,510
Gross Unrealized Gains	1	18
Gross Unrealized Losses	(161)	(56)
Fair Value	5,212	5,472
Mortgage-backed investments, Ginnie Mae
Amortized Cost	23,500	22,288
Gross Unrealized Gains	0	14
Gross Unrealized Losses	(1,521)	(726)
Fair Value	21,979	21,576
Mortgage backed investments Other [Member]
Amortized Cost	6,028
Gross Unrealized Gains	0
Gross Unrealized Losses	(13)
Fair Value	6,015
Municipal Bonds
Amortized Cost	10,640	13,126
Gross Unrealized Gains	5	290
Gross Unrealized Losses	(179)	(21)
Fair Value	10,466	13,395
US Government agencies
Amortized Cost	49,564	43,088
Gross Unrealized Gains	79	81
Gross Unrealized Losses	(925)	(536)
Fair Value	48,718	42,633
Corporate Bonds
Amortized Cost	23,490	22,502
Gross Unrealized Gains	245	527
Gross Unrealized Losses	(591)	(427)
Fair Value	$ 23,144	$ 22,602

Investments_ Schedule of Availa

Investments: Schedule of Available for sale Securities in Continuous Unrealized Loss positions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Net gain (loss) on sale of investments	$ 1,000	$ 47,000	$ (20,000)	$ 103,000
Fair Value	69,119,000		69,119,000		$ 61,015,000
Unrealized Loss	(1,468,000)		(1,468,000)		(665,000)
Fair Value	43,094,000		43,094,000		29,867,000
Unrealized Loss	(3,087,000)		(3,087,000)		(1,567,000)
Fair Value	112,213,000		112,213,000		90,882,000
Gross Unrealized Loss	(4,555,000)		(4,555,000)		(2,232,000)
Mortgage-backed investments, Fannie Mae
Fair Value	11,129,000		11,129,000		15,202,000
Unrealized Loss	(238,000)		(238,000)		(91,000)
Fair Value	13,736,000		13,736,000		6,759,000
Unrealized Loss	(927,000)		(927,000)		(375,000)
Fair Value	24,865,000		24,865,000		21,961,000
Gross Unrealized Loss	(1,165,000)		(1,165,000)		(466,000)
Mortgage-backed investments, Freddie Mac
Fair Value	5,102,000		5,102,000		3,189,000
Unrealized Loss	(161,000)		(161,000)		(56,000)
Fair Value	0		0		0
Unrealized Loss	0		0		0
Fair Value	5,102,000		5,102,000		3,189,000
Gross Unrealized Loss	(161,000)		(161,000)		(56,000)
Mortgage backed investments Ginnie Mae
Fair Value	6,951,000		6,951,000		6,454,000
Unrealized Loss	(207,000)		(207,000)		(61,000)
Fair Value	15,028,000		15,028,000		14,234,000
Unrealized Loss	(1,314,000)		(1,314,000)		(665,000)
Fair Value	21,979,000		21,979,000		20,688,000
Gross Unrealized Loss	(1,521,000)		(1,521,000)		(726,000)
Mortgage backed investments Other [Member]
Fair Value	6,015,000		6,015,000
Unrealized Loss	(13,000)		(13,000)
Fair Value	0		0
Unrealized Loss	0		0
Fair Value	6,015,000		6,015,000
Gross Unrealized Loss	(13,000)		(13,000)
Municipal Bonds
Fair Value	6,378,000		6,378,000		1,403,000
Unrealized Loss	(134,000)		(134,000)		(21,000)
Fair Value	963,000		963,000		0
Unrealized Loss	(45,000)		(45,000)		0
Fair Value	7,341,000		7,341,000		1,403,000
Gross Unrealized Loss	(179,000)		(179,000)		(21,000)
US Government agencies
Fair Value	32,551,000		32,551,000		33,268,000
Unrealized Loss	(708,000)		(708,000)		(435,000)
Fair Value	6,451,000		6,451,000		1,800,000
Unrealized Loss	(217,000)		(217,000)		(101,000)
Fair Value	39,002,000		39,002,000		35,068,000
Gross Unrealized Loss	(925,000)		(925,000)		(536,000)
Corporate Bonds
Fair Value	993,000		993,000		1,499,000
Unrealized Loss	(7,000)		(7,000)		(1,000)
Fair Value	6,916,000		6,916,000		7,074,000
Unrealized Loss	(584,000)		(584,000)		(426,000)
Fair Value	7,909,000		7,909,000		8,573,000
Gross Unrealized Loss	$ (591,000)		$ (591,000)		$ (427,000)

Investments_ Narrative (Details

Investments: Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)securities	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)securities	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)securities
Schedule of Available-for-sale Securities [Line Items]
Investments pledged as collateral for FHLB advances	50.00%		50.00%
Investments pledged as collateral for public deposits	$ 14,500,000		$ 14,500,000		$ 14,200,000
Principal repayments on investments available-for-sale	5,400,000	$ 2,800,000	15,200,000	$ 7,500,000
Net gain (loss) on sale of investments	$ 1,000	$ 47,000	$ (20,000)	103,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	18		18		13
Unrealized Loss | securities	57		57		36
Proceeds from Sale of Available-for-sale Securities, Debt
Payments to Acquire Marketable Securities			$ 33,011,000	$ 23,518,000

Investments_ Schedule of Avai_2

Investments: Schedule of Available for sale Securities, Debt Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investments [Abstract]
Due within one year, Amortized Cost	$ 253
Due after one year through five years, Amortized Cost	7,655
Due after five years through ten years, Amortized Cost	19,673
Due after ten years, Amortized Cost	56,113
Debt maturities, Amortized Cost	83,694
Mortgage-backed investments, Amortized Cost	61,388
Amortized Cost	145,082	$ 133,475
Due within one year, Fair Value	251
Due after one year through five years, Fair Value	7,725
Due after five years through ten years, Fair Value	19,196
Due after ten years, Fair Value	55,156
Debt maturities, Fair Value	82,328
Mortgage-backed investments, Fair Value	58,540
Fair Value	$ 140,868

Loans Receivable_ Schedule of_2

Loans Receivable: Schedule of Accounts, Notes, Loans and Financing Receivable (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Loans receivable		$ 1,101,021		$ 1,095,192
Loans in process (LIP)		91,232		92,498
Deferred loan fees, net		1,116		1,150
ALLL		13,116		12,882
Loans receivable, net		995,557		988,662
One-to-four family, residential, owner occupied
Loans receivable		184,698		148,304
One to four family residential non owner occupied
Loans receivable		143,226		130,351
One to Four Family
Loans receivable		327,924		278,655
One to four family residential
ALLL		3,532	$ 3,265	2,837	$ 2,717	$ 2,627	$ 2,551
Multifamily
Loans receivable		176,521		184,902
ALLL		1,739	1,928	1,820	1,703	1,231	1,199
Commercial Real Estate
Loans receivable		360,485		361,842
ALLL		4,478	4,494	4,418	3,743	3,733	3,893
Construction/Land Development One-to-four family residential
Loans receivable		84,912		87,404
Construction Land Development Multifamily
Loans receivable	[1]	80,607		108,439
Construction Land Development Commercial [Member]
Loans receivable	[1]	21,385		5,325
Construction Land Development Land Development
Loans receivable	[1]	7,113		36,405
Construction Land Development
Loans receivable	[1]	194,017		237,573
ALLL		2,197	2,121	2,816	2,982	2,942	2,792
Business
Loans receivable		29,655		23,087
ALLL		910	674	694	668	457	237
Consumer
Loans receivable		12,419		9,133
ALLL		260	272	297	297	295	279
Property total
ALLL		$ 13,116	$ 12,754	$ 12,882	$ 12,110	$ 11,285	$ 10,951
[1]	At September 30, 2018, loans totaling $475.9 million were pledged to secure borrowings from the FHLB of Des Moines compared to $422.6 million at December 31, 2017.

Loans Receivable_ Schedule of_3

Loans Receivable: Schedule of Allowance for Loan and Lease Losses, Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Loans receivable allowance for loan losses	$ 13,116		$ 12,882		$ 13,116	$ 12,882
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance			12,882
(Recapture) provision	200	$ 500	(4,200)	$ 800
Loans and Leases Receivable, Allowance, Ending Balance	13,116		13,116
One to four family residential
Impaired Financing Receivable, Related Allowance					86		$ 135
Loans receivable allowance for loan losses	3,265	2,627	2,837	2,551	3,532	2,837	2,717
Total Loans					327,924		266,447
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	3,265	2,627	2,837	2,551
Recoveries	2	247	4,248	280
(Recapture) provision	265	(157)	(3,553)	(114)
Loans and Leases Receivable, Allowance, Ending Balance	3,532	2,717	3,532	2,717
Financing Receivable, Collectively Evaluated for Impairment					318,353		251,141
Financing Receivable, Individually Evaluated for Impairment					9,571		15,306
One to four family residential | General Reserve
Loans receivable allowance for loan losses	3,446	2,582	3,446	2,582	3,446		2,582
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	3,446	2,582	3,446	2,582
Multifamily
Impaired Financing Receivable, Related Allowance					0	0	0
Loans receivable allowance for loan losses	1,928	1,231	1,820	1,199	1,739	1,820	1,703
Total Loans					176,521		173,681
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	1,928	1,231	1,820	1,199
Recoveries	0	0	0	0
(Recapture) provision	(189)	472	(81)	504
Loans and Leases Receivable, Allowance, Ending Balance	1,739	1,703	1,739	1,703
Financing Receivable, Collectively Evaluated for Impairment					175,405		172,541
Financing Receivable, Individually Evaluated for Impairment					1,116		1,140
Multifamily | General Reserve
Loans receivable allowance for loan losses	1,739	1,703	1,739	1,703	1,739		1,703
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	1,739	1,703	1,739	1,703
Commercial Real Estate
Impaired Financing Receivable, Related Allowance					7	19	20
Loans receivable allowance for loan losses	4,494	3,733	4,418	3,893	4,478	4,418	3,743
Total Loans					360,261		319,872
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	4,494	3,733	4,418	3,893
Recoveries	0	78	14	78
(Recapture) provision	(16)	(68)	46	(228)
Loans and Leases Receivable, Allowance, Ending Balance	4,478	3,743	4,478	3,743
Financing Receivable, Collectively Evaluated for Impairment					357,335		316,656
Financing Receivable, Individually Evaluated for Impairment					2,926		3,216
Commercial Real Estate | General Reserve
Loans receivable allowance for loan losses	4,471	3,723	4,471	3,723	4,471		3,723
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	4,471	3,723	4,471	3,723
Construction Land Development
Impaired Financing Receivable, Related Allowance					0		0
Loans receivable allowance for loan losses	2,121	2,942	2,816	2,792	2,197	2,816	2,982
Total Loans					103,009		153,914
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	2,121	2,942	2,816	2,792
Recoveries	160	0	172	0
(Recapture) provision	(84)	40	(791)	190
Loans and Leases Receivable, Allowance, Ending Balance	2,197	2,982	2,197	2,982
Financing Receivable, Collectively Evaluated for Impairment					103,009		153,914
Financing Receivable, Individually Evaluated for Impairment					0		0
Construction Land Development | General Reserve
Loans receivable allowance for loan losses	2,197	2,982	2,197	2,982	2,197		2,982
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	2,197	2,982	2,197	2,982
Business
Impaired Financing Receivable, Related Allowance					0		0
Loans receivable allowance for loan losses	674	457	694	237	910	694	668
Total Loans					29,655		22,243
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	674	457	694	237
Recoveries	0	0	0	0
(Recapture) provision	236	211	216	431
Loans and Leases Receivable, Allowance, Ending Balance	910	668	910	668
Financing Receivable, Collectively Evaluated for Impairment					29,655		22,243
Financing Receivable, Individually Evaluated for Impairment					0		0
Business | General Reserve
Loans receivable allowance for loan losses	910	668	910	668	910		668
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	910	668	910	668
Consumer
Impaired Financing Receivable, Related Allowance					0		0
Loans receivable allowance for loan losses	272	295	297	279	260	297	297
Total Loans					12,419		9,301
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	272	295	297	279
Recoveries	0	0	0	1
(Recapture) provision	(12)	2	(37)	17
Loans and Leases Receivable, Allowance, Ending Balance	260	297	260	297
Financing Receivable, Collectively Evaluated for Impairment					12,330		9,205
Financing Receivable, Individually Evaluated for Impairment					89		96
Consumer | General Reserve
Loans receivable allowance for loan losses	260	297	260	297	260		297
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	260	297	260	297
Property total
Impaired Financing Receivable, Related Allowance					93	135	155
Loans receivable allowance for loan losses	12,754	11,285	12,882	10,951	13,116	$ 12,882	12,110
Total Loans					1,009,789		945,458
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Beginning Balance	12,754	11,285	12,882	10,951
Recoveries	162	325	4,434	359
(Recapture) provision	200	500	(4,200)	800
Loans and Leases Receivable, Allowance, Ending Balance	13,116	12,110	13,116	12,110
Financing Receivable, Collectively Evaluated for Impairment					996,087		925,700
Financing Receivable, Individually Evaluated for Impairment					13,702		19,758
Property total | General Reserve
Loans receivable allowance for loan losses	13,023	11,955	13,023	11,955	$ 13,023		$ 11,955
Allowance for Loan and Lease Losses [Roll Forward]
Loans and Leases Receivable, Allowance, Ending Balance	$ 13,023	$ 11,955	$ 13,023	$ 11,955

Loans Receivable_ Narratives (D

Loans Receivable: Narratives (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Loans Pledged as Collateral	$ 475,900,000		$ 475,900,000		$ 422,600,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 4,000	$ 3,000	$ 10,000	$ 21,000
Loans and Leases Receivable, Ratio of Nonperforming Loans to All Loans	0.08%		0.08%		0.01%
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 0		$ 0		$ 0
Troubled Debt Restructuring Loans	13,200,000		13,200,000		$ 17,800,000
Troubled Debt Restructuring Commitment To Extend Additional Credit	0	$ 0	0	$ 0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0		0
Troubled debt restructuring, charge to Allowance for Loan and Lease Losses			$ 0
Minimum
Troubled Debt Restructuring, Interest Rate Concession Period	1 year	1 year			1 year
Maximum
Troubled Debt Restructuring, Interest Rate Concession Period	3 years	3 years			3 years

Loans Receivable_ Financing Rec

Loans Receivable: Financing Receivables, Aging of loans (Details) - USD ($)	Sep. 30, 2018		Dec. 31, 2017
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	$ 0		$ 0
One-to-four family, residential, owner occupied
Total	496,000		101,000
Current	184,202,000		148,203,000
Total Loans	184,698,000	[1],[2]	148,304,000	[3],[4]
One to four family residential non owner occupied
Total	0		0
Current	143,226,000		130,351,000
Total Loans	143,226,000	[1],[2]	130,351,000	[3],[4]
Multifamily
Total	0		0
Current	176,521,000		184,902,000
Total Loans	176,521,000	[1],[2]	184,902,000	[3],[4]
Commercial Real Estate
Total	325,000		0
Current	359,936,000		361,299,000
Total Loans	360,261,000	[1],[2]	361,299,000	[3],[4]
Construction Land Development
Total	0		0
Current	103,009,000		145,618,000
Total Loans	103,009,000	[1],[2]	145,618,000	[3],[4]
Real Estate, Total
Total	821,000		101,000
Current	966,894,000		970,373,000
Total Loans	967,715,000	[1],[2]	970,474,000	[3],[4]
Business
Total	0		0
Current	29,655,000		23,087,000
Total Loans	29,655,000	[1],[2]	23,087,000	[3],[4]
Consumer
Total	0		0
Current	12,419,000		9,133,000
Total Loans	12,419,000	[1],[2]	9,133,000	[3],[4]
Property total
Total	821,000		101,000
Current	1,008,968,000		1,002,593,000
Total Loans	1,009,789,000	[1],[2],[5],[6]	1,002,694,000	[3],[4],[7],[8]
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-four family, residential, owner occupied
Total	496,000		101,000
Financing Receivables, 30 to 59 Days Past Due [Member] | One to four family residential non owner occupied
Total	0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Multifamily
Total	0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate
Total	325,000		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Land Development
Total	0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Real Estate, Total
Total	821,000		101,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Business
Total	0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer
Total	0		0
Financing Receivables, 30 to 59 Days Past Due [Member] | Property total
Total	821,000		101,000
Financing Receivables, 60 to 89 Days Past Due [Member] | One-to-four family, residential, owner occupied
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | One to four family residential non owner occupied
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Multifamily
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Land Development
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Real Estate, Total
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Business
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer
Total	0		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Property total
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One-to-four family, residential, owner occupied
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One to four family residential non owner occupied
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Multifamily
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Land Development
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Real Estate, Total
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Business
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer
Total	0		0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Property total
Total	$ 0		$ 0
[1]	Net of LIP.
[2]	There were no loans 90 days and greater past due and still accruing interest at September 30, 2018.
[3]	Net of LIP.
[4]	There were no loans 90 days and greater past due and still accruing interest at December 31, 2017.
[5]	Net of LIP.
[6]	Net of LIP.
[7]	Net of LIP.
[8]	Net of LIP.

Loans Receivable Loans Receivab

Loans Receivable Loans Receivable: Schedule of non accrual loans by type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 13,822	$ 22,173	$ 15,514	$ 25,640
Nonaccrual Loans, total	484		484		$ 179
One to Four Family
Nonaccrual Loans, total	113		113		128
Commercial Real Estate
Nonaccrual Loans, total	325		325		0
Consumer
Nonaccrual Loans, total	$ 46		$ 46		$ 51

Loans Receivable_ Financing R_2

Loans Receivable: Financing Receivables, Summary of loans by type and risk category (Details) - USD ($)	Sep. 30, 2018		Dec. 31, 2017
One to four family residential
Financing Receivable, Net	$ 327,924,000		$ 278,655,000
Multifamily
Financing Receivable, Net	176,521,000	[1],[2]	184,902,000	[3],[4]
Commercial Real Estate
Financing Receivable, Net	360,261,000	[1],[2]	361,299,000	[3],[4]
Construction Land Development
Financing Receivable, Net	103,009,000	[1],[2]	145,618,000	[3],[4]
Business
Financing Receivable, Net	29,655,000	[1],[2]	23,087,000	[3],[4]
Consumer
Financing Receivable, Net	12,419,000	[1],[2]	9,133,000	[3],[4]
Property total
Financing Receivable, Net	1,009,789,000	[1],[2],[5],[6]	1,002,694,000	[3],[4],[7],[8]
One-to-four family, residential, owner occupied
Financing Receivable, Net	184,698,000	[1],[2]	148,304,000	[3],[4]
One to four family residential non owner occupied
Financing Receivable, Net	143,226,000	[1],[2]	130,351,000	[3],[4]
Performing Financing Receivable | One to four family residential
Financing Receivable, Net	327,811,000	[9]	278,527,000	[10]
Performing Financing Receivable | Multifamily
Financing Receivable, Net	176,521,000	[9]	184,902,000	[10]
Performing Financing Receivable | Commercial Real Estate
Financing Receivable, Net	359,936,000	[9]	361,299,000	[10]
Performing Financing Receivable | Construction Land Development
Financing Receivable, Net	103,009,000	[9]	145,618,000	[10]
Performing Financing Receivable | Business
Financing Receivable, Net	29,655,000	[9]	23,087,000	[10]
Performing Financing Receivable | Consumer
Financing Receivable, Net	12,373,000	[9]	9,082,000	[10]
Performing Financing Receivable | Property total
Financing Receivable, Net	1,009,305,000	[6],[9]	1,002,515,000	[7],[10]
Performing Financing Receivable | One-to-four family, residential, owner occupied
Financing Receivable, Net	184,600,000		148,200,000
Performing Financing Receivable | One to four family residential non owner occupied
Financing Receivable, Net	143,200,000		130,300,000
Nonperforming Financing Receivable | One to four family residential
Financing Receivable, Net	113,000	[11]	128,000	[12]
Nonperforming Financing Receivable | Multifamily
Financing Receivable, Net	0	[11]	0	[12]
Nonperforming Financing Receivable | Commercial Real Estate
Financing Receivable, Net	325,000	[11]	0	[12]
Nonperforming Financing Receivable | Construction Land Development
Financing Receivable, Net	0	[11]	0	[12]
Nonperforming Financing Receivable | Business
Financing Receivable, Net	0	[11]	0	[12]
Nonperforming Financing Receivable | Consumer
Financing Receivable, Net	46,000	[11]	51,000	[12]
Nonperforming Financing Receivable | Property total
Financing Receivable, Net	484,000	[6],[11]	179,000	[7],[12]
Nonperforming Financing Receivable | One-to-four family, residential, owner occupied
Financing Receivable, Net	113,000		128,000
Pass | One to four family residential
Financing Receivable, Net	325,509,000		275,653,000
Pass | Multifamily
Financing Receivable, Net	176,521,000		184,902,000
Pass | Commercial Real Estate
Financing Receivable, Net	359,021,000		358,285,000
Pass | Construction Land Development
Financing Receivable, Net	103,009,000		145,618,000
Pass | Business
Financing Receivable, Net	29,655,000		23,087,000
Pass | Consumer
Financing Receivable, Net	12,373,000		8,893,000
Pass | Property total
Financing Receivable, Net	1,006,088,000	[5]	996,438,000	[8]
Special Mention | One to four family residential
Financing Receivable, Net	1,762,000		2,329,000
Special Mention | Multifamily
Financing Receivable, Net	0		0
Special Mention | Commercial Real Estate
Financing Receivable, Net	370,000		2,459,000
Special Mention | Construction Land Development
Financing Receivable, Net	0		0
Special Mention | Business
Financing Receivable, Net	0		0
Special Mention | Consumer
Financing Receivable, Net	0		188,000
Special Mention | Property total
Financing Receivable, Net	2,132,000	[5]	4,976,000	[8]
Substandard | One to four family residential
Financing Receivable, Net	653,000		673,000
Substandard | Multifamily
Financing Receivable, Net	0		0
Substandard | Commercial Real Estate
Financing Receivable, Net	870,000		555,000
Substandard | Construction Land Development
Financing Receivable, Net	0		0
Substandard | Business
Financing Receivable, Net	0		0
Substandard | Consumer
Financing Receivable, Net	46,000		52,000
Substandard | Property total
Financing Receivable, Net	$ 1,569,000	[5]	$ 1,280,000	[8]
[1]	Net of LIP.
[2]	There were no loans 90 days and greater past due and still accruing interest at September 30, 2018.
[3]	Net of LIP.
[4]	There were no loans 90 days and greater past due and still accruing interest at December 31, 2017.
[5]	Net of LIP.
[6]	Net of LIP.
[7]	Net of LIP.
[8]	Net of LIP.
[9]	There were $184.6 million of owner-occupied one-to-four family residential loans and $143.2 million of non-owner occupied one-to-four family residential loans classified as performing.
[10]	There were $148.2 million of owner-occupied one-to-four family residential loans and $130.3 million of non-owner occupied one-to-four family residential loans classified as performing.
[11]	The $113,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied. December 31, 2017 One-to-FourFamilyResidential Multifamily CommercialReal Estate Construction/Land Business Consumer Total (1) (In thousands)Performing (2)$278,527 $184,902 $361,299 $145,618 $23,087 $9,082 $1,002,515Nonperforming (3)128 — — — — 51 179Total loans$278,655 $184,902 $361,299 $145,618 $23,087 $9,133 $1,002,694
[12]	The $128,000 of one-to-four family residential loans classified as nonperforming are all owner-occupied.

Loans Receivable_ Schedule of I

Loans Receivable: Schedule of Impaired Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017	Dec. 31, 2017
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 9,772		$ 16,986	$ 10,516		$ 19,499
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	164		250	547		751
Impaired Financing Receivable, Recorded Investment	13,609	[1]		13,609	[1]		$ 17,849	[2]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,050		5,187	4,998		6,141
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	54		67	170		181
Impaired Financing Receivable, Average Recorded Investment	13,822		22,173	15,514		25,640
Impaired Financing Receivable, Interest Income, Accrual Method	218		317	717		932
One-to-four family, residential, owner occupied
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,045	[3]		1,045	[3]		1,321	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,213	[5]		1,213	[5]		1,516	[6]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	516	[3]		516	[3]		522	[4]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	562	[5]		562	[5]		568	[6]
Impaired Financing Receivable, Related Allowance	23			23			5
Impaired Financing Receivable, Recorded Investment	1,561	[3]		1,561	[3]		1,843	[4]
Impaired Financing Receivable, Unpaid Principal Balance	1,775	[5]		1,775	[5]		2,084	[6]
One to four family residential non owner occupied
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,857	[3]		4,857	[3]		8,409	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	4,857	[5]		4,857	[5]		8,409	[6]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	3,153	[3]		3,153	[3]		3,310	[4]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	3,174	[5]		3,174	[5]		3,332	[6]
Impaired Financing Receivable, Related Allowance	63			63			111
Impaired Financing Receivable, Recorded Investment	8,010	[3]		8,010	[3]		11,719	[4]
Impaired Financing Receivable, Unpaid Principal Balance	8,031	[5]		8,031	[5]		11,741	[6]
Multifamily
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,116			1,116			1,134	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,116			1,116			1,134	[4]
Impaired Financing Receivable, Related Allowance	0		0	0		0	0
Impaired Financing Receivable, Recorded Investment	1,116	[3]		1,116	[3]		1,134	[4]
Impaired Financing Receivable, Unpaid Principal Balance	1,116	[5]		1,116	[5]		1,134	[6]
Commercial Real Estate
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,556	[3]		2,556	[3]		1,065	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,556	[5]		2,556	[5]		1,065	[6]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	370	[3]		370	[3]		2,129	[4]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	370	[5]		370	[5]		2,129	[6]
Impaired Financing Receivable, Related Allowance	7		20	7		20	19
Impaired Financing Receivable, Recorded Investment	2,926	[3]		2,926	[3]		3,194	[4]
Impaired Financing Receivable, Unpaid Principal Balance	2,926	[5]		2,926	[5]		3,194	[6]
Consumer
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	89	[3]		89	[3]		94	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	141	[5]		141	[5]		144	[6]
Impaired Financing Receivable, Related Allowance	0			0			0
Impaired Financing Receivable, Recorded Investment	89	[3]		89	[3]		94	[4]
Impaired Financing Receivable, Unpaid Principal Balance	141	[5]		141	[5]		144	[6]
Construction Land Development [Member]
Impaired Financing Receivable, Related Allowance	0		0	0		0
Property total
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	9,663	[3]		9,663	[3]		12,023	[4]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	9,883	[5]		9,883	[5]		12,268	[6]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,039	[3]		4,039	[3]		5,961	[4]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,106	[5]		4,106	[5]		6,029	[6]
Impaired Financing Receivable, Related Allowance	93		155	93		155	135
Impaired Financing Receivable, Recorded Investment	13,702	[3]		13,702	[3]		17,984	[4]
Impaired Financing Receivable, Unpaid Principal Balance	13,989	[5]		13,989	[5]		$ 18,297	[6]
Consumer Loan [Member]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	90		97	92		99
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	2		2	6		6
Impaired Financing Receivable, Average Recorded Investment	90		97	92		99
Impaired Financing Receivable, Interest Income, Accrual Method	2		2	6		6
Construction Land Development [Member]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment			0			124
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized			0			0
Impaired Financing Receivable, Average Recorded Investment			0			124
Impaired Financing Receivable, Interest Income, Accrual Method			0			0
Commercial Real Estate
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,402		2,693	1,732		2,818
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	42		49	133		135
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	373		745	1,247		749
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	5		10	22		31
Impaired Financing Receivable, Average Recorded Investment	2,775		3,438	2,979		3,567
Impaired Financing Receivable, Interest Income, Accrual Method	47		59	155		166
Multifamily
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,119		1,143	1,125		1,251
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	19		19	55		56
Impaired Financing Receivable, Average Recorded Investment	1,119		1,143	1,125		1,251
Impaired Financing Receivable, Interest Income, Accrual Method	19		19	55		56
One to four family residential non owner occupied
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,112		11,395	6,385		13,445
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	83		158	298		485
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,160		3,343	3,232		3,773
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	40		47	122		128
Impaired Financing Receivable, Average Recorded Investment	8,272		14,738	9,617		17,218
Impaired Financing Receivable, Interest Income, Accrual Method	123		205	420		613
One-to-four family, residential, owner occupied
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,049		1,658	1,182		1,886
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	18		22	55		69
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	517		1,099	519		1,495
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	9		10	26		22
Impaired Financing Receivable, Average Recorded Investment	1,566		2,757	1,701		3,381
Impaired Financing Receivable, Interest Income, Accrual Method	$ 27		$ 32	$ 81		$ 91
[1]	tal fair value of impaired loans is net of $93,000 of specific reserves on performing TDRs. Fair Value Measurements at December 31, 2017 Fair ValueMeasurements Quoted Prices inActive Marketsfor IdenticalAssets (Level 1) SignificantOtherObservableInputs (Level 2) SignificantUnobservableInputs(Level 3) (In thousands)Impaired loans (included in loans receivable, net) (1)$17,849 $— $— $17,849OREO 483 — — 483Total$18,332 $— $— $18,332
[2]	tal fair value of impaired loans is net of $135,000 of specific reserves on performing TDRs.
[3]	Represents the loan balance less charge-offs.
[4]	Represents the loan balance less charge-offs.
[5]	Contractual loan principal balance.
[6]	Contractual loan principal balance.

Loans Receivable_ Average Recor

Loans Receivable: Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	$ 9,772	$ 16,986	$ 10,516	$ 19,499
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	164	250	547	751
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,050	5,187	4,998	6,141
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	54	67	170	181
Impaired Financing Receivable, Average Recorded Investment	13,822	22,173	15,514	25,640
Impaired Financing Receivable, Interest Income, Accrual Method	218	317	717	932
One-to-four family, residential, owner occupied
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,049	1,658	1,182	1,886
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	18	22	55	69
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	517	1,099	519	1,495
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	9	10	26	22
Impaired Financing Receivable, Average Recorded Investment	1,566	2,757	1,701	3,381
Impaired Financing Receivable, Interest Income, Accrual Method	27	32	81	91
One to four family residential non owner occupied
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,112	11,395	6,385	13,445
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	83	158	298	485
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	3,160	3,343	3,232	3,773
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	40	47	122	128
Impaired Financing Receivable, Average Recorded Investment	8,272	14,738	9,617	17,218
Impaired Financing Receivable, Interest Income, Accrual Method	123	205	420	613
Multifamily
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,119	1,143	1,125	1,251
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	19	19	55	56
Impaired Financing Receivable, Average Recorded Investment	1,119	1,143	1,125	1,251
Impaired Financing Receivable, Interest Income, Accrual Method	19	19	55	56
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,402	2,693	1,732	2,818
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	42	49	133	135
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	373	745	1,247	749
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized	5	10	22	31
Impaired Financing Receivable, Average Recorded Investment	2,775	3,438	2,979	3,567
Impaired Financing Receivable, Interest Income, Accrual Method	47	59	155	166
Consumer Loan
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	90	97	92	99
Impaired Financing Receivable, with No Related Allowance, Interest Income Recognized	2	2	6	6
Impaired Financing Receivable, Average Recorded Investment	90	97	92	99
Impaired Financing Receivable, Interest Income, Accrual Method	$ 2	2	$ 6	6
Construction Land Development
Accounts, Notes, Loans and Financing Receivable
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		0		124
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		0		0
Impaired Financing Receivable, Average Recorded Investment		0		124
Impaired Financing Receivable, Interest Income, Accrual Method		$ 0		$ 0

Loans Receivable_ Troubled Debt

Loans Receivable: Troubled Debt Restructurings on Financing Receivables (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018USD ($)loan	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)loan	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Loan Restructuring, Trial Modifications, Amount	1	1	2	8
Financing Receivable, Modifications, Recorded Investment	$ 13,200,000		$ 13,200,000		$ 17,800,000
Troubled Debt Restructuring Commitment To Extend Additional Credit	0	$ 0	0	$ 0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0
Financing Receivable, Modifications, Pre-Modification Recorded Investment	563,000	524,000	1,687,000	2,492,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 563,000	$ 524,000	$ 1,687,000	$ 2,492,000
Minimum [Member]
Troubled Debt Restructuring, Interest Rate Concession Period	1 year	1 year			1 year
Maximum [Member]
Troubled Debt Restructuring, Interest Rate Concession Period	3 years	3 years			3 years
Principal and Interest with Interest Rate Concession [Member]
Loan Restructuring, Trial Modifications, Amount		1		8
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 524,000		$ 2,492,000
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 524,000		$ 2,492,000
Commercial Real Estate [Member] | Advancement of Maturity Date [Member]
Loan Restructuring, Trial Modifications, Amount | loan	0		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 0		$ 1,124,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0		$ 1,124,000
One to four family residential [Member] | Advancement of Maturity Date [Member]
Loan Restructuring, Trial Modifications, Amount | loan	1		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 563,000		$ 563,000
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 563,000		$ 563,000

Other Real Estate Owned - Other

Other Real Estate Owned - Other Real Estate, Roll Forward (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Real Estate [Roll Forward]
Balance at beginning of period	$ 483,000	$ 1,825,000	$ 483,000	$ 2,331,000
Proceeds from sales of OREO properties	0	0	0	461,000
Gain on sale of OREO	0	0	0	5,000
Market value adjustments	0	0	0	(50,000)
Balance at end of period	$ 483,000	$ 1,825,000	$ 483,000	$ 1,825,000

Other Real Estate Owned (Detail

Other Real Estate Owned (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)property	Sep. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Real Estate [Line Items]
Real estate properties sold | property			0
Market value adjustments	$ 0	$ 0	$ 0	$ 50,000
Other real estate	483,000	$ 1,825,000	483,000	$ 1,825,000	$ 483,000	$ 483,000	$ 1,825,000	$ 2,331,000
Real Estate Acquired Through Foreclosure	325,000		325,000
Commercial Real Estate
Real Estate [Line Items]
Other real estate	$ 483,000		$ 483,000

Fair Value (Details)

Fair Value (Details) - USD ($)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Specific reserves on performing TDRs	$ 93,000	$ 135,000
Loans Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, option, methodology and assumptions	The fair value of impaired loans reflects the exit price and is calculated using the collateral value method or on a discounted cash flow basis. Inputs used in the collateral value method include appraised values, less estimated costs to sell. Some of these inputs may not be observable in the marketplace.

Fair Value_ Schedule of Fair Va

Fair Value: Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	$ 140,868	$ 132,242
Derivative fair value asset	2,454	1,526
Assets, Fair Value Disclosure, Recurring	143,322	133,768
Mortgage-backed investments, Fannie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	25,334	26,564
Mortgage-backed investments, Freddie Mac
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	5,212	5,472
Mortgage-backed investments, Ginnie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	21,979	21,576
Mortgage backed investments Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	6,015
Municipal Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	10,466	13,395
US Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	48,718	42,633
Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	23,144	22,602
Derivative Financial Instruments, Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	2,454	1,526
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Derivative fair value asset	0	0
Assets, Fair Value Disclosure, Recurring	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed investments, Fannie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed investments, Freddie Mac
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed investments, Ginnie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage backed investments Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | US Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative Financial Instruments, Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	140,868	132,242
Derivative fair value asset	2,454	1,526
Assets, Fair Value Disclosure, Recurring	143,322	133,768
Significant Other Observable Inputs (Level 2) | Mortgage-backed investments, Fannie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	25,334	26,564
Significant Other Observable Inputs (Level 2) | Mortgage-backed investments, Freddie Mac
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	5,212	5,472
Significant Other Observable Inputs (Level 2) | Mortgage-backed investments, Ginnie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	21,979	21,576
Significant Other Observable Inputs (Level 2) | Mortgage backed investments Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	6,015
Significant Other Observable Inputs (Level 2) | Municipal Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	10,466	13,395
Significant Other Observable Inputs (Level 2) | US Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	48,718	42,633
Significant Other Observable Inputs (Level 2) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	23,144	22,602
Significant Other Observable Inputs (Level 2) | Derivative Financial Instruments, Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	2,454	1,526
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Derivative fair value asset	0	0
Assets, Fair Value Disclosure, Recurring	0	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed investments, Fannie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed investments, Freddie Mac
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed investments, Ginnie Mae
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | Mortgage backed investments Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0
Significant Unobservable Inputs (Level 3) | Municipal Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | US Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, fair value disclosure	0	0
Significant Unobservable Inputs (Level 3) | Derivative Financial Instruments, Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	$ 0	$ 0

Fair Value_ Schedule of balance

Fair Value: Schedule of balances of assets and liabilities, measured at fair value on a non-recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018		Jun. 30, 2018	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	$ 2,454			$ 1,526
Impaired loans (included in loans receivable, net)	13,609	[1]		17,849	[2]
OREO	483		$ 483	483		$ 1,825	$ 1,825	$ 2,331
Total, Fair Value	14,092			18,332
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	0			0
Impaired loans (included in loans receivable, net)	0	[1]		0	[2]
OREO	0			0
Total, Fair Value	0			0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	2,454			1,526
Impaired loans (included in loans receivable, net)	0	[1]		0	[2]
OREO	0			0
Total, Fair Value	0			0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative fair value asset	0			0
Impaired loans (included in loans receivable, net)	13,609	[1]		17,849	[2]
OREO	483			483
Total, Fair Value	$ 14,092			$ 18,332
[1]	tal fair value of impaired loans is net of $93,000 of specific reserves on performing TDRs. Fair Value Measurements at December 31, 2017 Fair ValueMeasurements Quoted Prices inActive Marketsfor IdenticalAssets (Level 1) SignificantOtherObservableInputs (Level 2) SignificantUnobservableInputs(Level 3) (In thousands)Impaired loans (included in loans receivable, net) (1)$17,849 $— $— $17,849OREO 483 — — 483Total$18,332 $— $— $18,332
[2]	tal fair value of impaired loans is net of $135,000 of specific reserves on performing TDRs.

Fair Value_ Schedule of quantit

Fair Value: Schedule of quantitative information about Level 3 Fair Value Measurements on a nonrecurring basis (Details) - Level 3 - Market Approach Valuation Technique - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Loans Receivable
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair Value	$ 13,609	$ 17,849
Fair Value Measurements, Valuation Techniques	Market approach	Market approach
Unobservable Input(s)	Appraised value discounted by market or borrower conditions	Appraised value discounted by market or borrower conditions
Loans Receivable | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%
Loans Receivable | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%
Loans Receivable | Weighted Average
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%
Other Real Estate Owned
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair Value	$ 483	$ 483
Fair Value Measurements, Valuation Techniques	Market approach	Market approach
Unobservable Input(s)	Appraised value less selling costs	Appraised value less selling costs
Other Real Estate Owned | Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%
Other Real Estate Owned | Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%
Other Real Estate Owned | Weighted Average
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
Fair value of financial instruments, range	0.00%	0.00%

Fair Value_ Balance Sheet Group

Fair Value: Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments available-for-sale	$ 140,868	$ 132,242
FHLB stock	7,410	9,882
Derivative fair value asset	2,454	1,526
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash on hand and in banks	7,167	9,189
Interest-earning deposits with banks	19,094	6,942
Investments available-for-sale	0	0
Loans receivable, net	0	0
FHLB stock	0	0
Accrued interest receivable	0	0
Derivative fair value asset	0	0
Deposits	440,265	430,750
Certificates of deposit, retail	0	0
Certificates of deposit, brokered	0	0
Advances from the FHLB	0	0
Accrued interest payable	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash on hand and in banks	0	0
Interest-earning deposits with banks	0	0
Investments available-for-sale	140,868	132,242
Loans receivable, net	0	0
FHLB stock	7,410	9,882
Accrued interest receivable	4,664	4,084
Derivative fair value asset	2,454	1,526
Deposits	0	0
Certificates of deposit, retail	370,948	331,199
Certificates of deposit, brokered	101,812	74,947
Advances from the FHLB	145,108	214,477
Accrued interest payable	541	326
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash on hand and in banks	0	0
Interest-earning deposits with banks	0	0
Investments available-for-sale	0	0
Loans receivable, net	977,320	980,578
FHLB stock	0	0
Accrued interest receivable	0	0
Derivative fair value asset	0	0
Deposits	0	0
Certificates of deposit, retail	0	0
Certificates of deposit, brokered	0	0
Advances from the FHLB	0	0
Accrued interest payable	0	0
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash on hand and in banks	7,167	9,189
Interest-earning deposits with banks	19,094	6,942
Investments available-for-sale	140,868	132,242
Loans receivable, net	995,557	988,662
FHLB stock	7,410	9,882
Accrued interest receivable	4,664	4,084
Derivative fair value asset	2,454	1,526
Deposits	440,265	430,750
Certificates of deposit, retail	373,931	333,264
Certificates of deposit, brokered	102,083	75,488
Advances from the FHLB	149,000	216,000
Accrued interest payable	541	326
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash on hand and in banks	7,167	9,189
Interest-earning deposits with banks	19,094	6,942
Investments available-for-sale	140,868	132,242
Loans receivable, net	977,320	980,578
FHLB stock	7,410	9,882
Accrued interest receivable	4,664	4,084
Derivative fair value asset	2,454	1,526
Deposits	440,265	430,750
Certificates of deposit, retail	370,948	331,199
Certificates of deposit, brokered	101,812	74,947
Advances from the FHLB	145,108	214,477
Accrued interest payable	$ 541	$ 326

Derivatives (Details)

Derivatives (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2018
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	$ 70,000	$ 125,000	$ 1,900,000
Derivative fair value asset	2,454,000	1,526,000	2,454,000
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0
FHLB of Des Moines [Member]
Derivative [Line Items]
Debt Instrument, Face Amount	50,000,000		50,000,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative, Notional Amount	50,000,000		50,000,000
Derivative fair value asset	$ 2,454,000	$ 1,526,000	$ 2,454,000
Derivative, Fixed Interest Rate	1.34%		1.34%

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 130,000	$ 104,000	$ 539,000	$ 505,000
Tax benefit from compensation expense	$ 27,000	$ 36,000	$ 113,000	$ 177,000
Grants in period	0
First Financial Northwest Inc 2016 Equity Incentive Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	1,400,000		1,400,000
Available for grant (shares)	1,290,670		1,290,670
Expiration period			10 years
First Financial Northwest Inc 2016 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	400,000		400,000
Available for grant (shares)	345,335		345,335
First Financial Northwest, Inc. 2008 Equity Incentive Plan | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			5 years
Percentage of options vesting per year			20.00%
Expiration period			10 years
Compensation cost not yet recognized	$ 144,000		$ 144,000
Compensation cost not yet recognized, weighted average vesting period			1 year 6 months 20 days
First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			5 years
Percentage of options vesting per year			20.00%
Compensation cost not yet recognized	$ 138,000		$ 138,000
Compensation cost not yet recognized, weighted average vesting period			5 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	20,987		20,987		25,987	5,000
Granted, Shares	0		30,179
Expected to vest in 2018 | First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
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, Nonvested, Number	0		0
Expected to vest and be available for exercise | First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares	43,000
Expected to exercise at March 31 2018 | First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares	272,000

Stock-Based Compensation Disclo

Stock-Based Compensation Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)$ / sharesshares	Sep. 30, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Beginning Balance, Shares	315,000	452,940
Exercised, Shares	0	(137,940)
Outstanding Ending Balance, Shares	315,000	315,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding Beginning Balance, Weighted Average Exercise Price | $ / shares	$ 10.34	$ 10.21
Exercised, Weighted Average Exercise Price | $ / shares		9.90
Outstanding Ending Balance, Weighted Average Exercise Price | $ / shares	$ 10.34	$ 10.34
Share-based Compensations Arrangement by Share-based Payment Award, Options Outstanding, Weighted Average Remaining Contractual Term [Roll Forward]
Outstanding Beginning Balance, Weighted Average Remaining Contractual Term	5 years 2 months 27 days	5 years 2 months 27 days
Outstanding Ending Balance, Weighted Average Remaining Contractual Term	5 years 2 months 27 days	5 years 2 months 27 days
Share-based Compensation Arrangement by Share-based Payment Award, Options Outstanding, Aggregate Intrinsic [Roll Forward]
Outstanding Beginning Balance, Aggregate Intrinsic Value | $	$ 2,891,350	$ 2,402,096
Exercised, Aggregate Intrinsic Value | $		1,112,026
Outstanding Ending Balance, Aggregate Intrinsic Value | $	$ 1,962,100	$ 1,962,100
Share Based Compensation, Stock Option Plan, Additional Disclosures [Abstract]
Expected to Vest, Shares	313,710	313,710
Expected to Vest, Weighted Average Exercise Price | $ / shares	$ 10.33	$ 10.33
Expected to Vest, Weighted Average Remaining Contractual Term in Years	5 years 2 months 24 days	5 years 2 months 23 days
Expected to Vest, Aggregate Intrinsic Value | $	$ 1,956,260	$ 1,956,260
Exercisable at end of period, Shares	272,000	272,000
Exercisable at end of period, Weighted Average Exercise Price | $ / shares	10.07	10.07
Exercisable at end of period, Weighted Average Remaining Contractual Term in Years	5 years 7 days	5 years 7 days
Exercisable at end of period, Aggregate Intrinsic Value | $	$ 1,767,430	$ 1,767,430
First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested Beginning Balance	25,987	5,000
Granted, Shares	0	30,179
Vested, Shares	5,000	14,192
Nonvested Ending Balance	20,987	20,987
Expected to vest assuming a 3% forfeiture rate over the vesting term, Shares	20,357	20,357
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested Beginning Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 14.93	$ 10.88
Granted, Weighted Average Grant Date Fair Value | $ / shares	0	17.14
Vested, Weighted Average Grant Date Fair Value | $ / shares	10.88	16.77
Nonvested Ending Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 15.90	$ 15.90
Expected to vest assuming a 3% forfeiture rate over the vesting term | First Financial Northwest, Inc. 2008 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested Ending Balance	0	0
Expected to vest assuming a 3% forfeiture rate over the vesting term, Shares	20,357	20,357
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested Ending Balance, Weighted-Average Grant Date Fair Value | $ / shares	$ 15.90	$ 15.90

Earnings Per Share_ Schedule _2

Earnings Per Share: Schedule of Earnings Per Share Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 2,792	$ 1,861	$ 12,736	$ 6,073
Less: Earnings allocated to participating securities	(5)	(2)	(24)	(6)
Earnings allocated to common shareholders	$ 2,787	$ 1,859	$ 12,712	$ 6,067
Basic weighted average common shares outstanding	10,356,994	10,287,663	10,280,287	10,323,459
Dilutive stock options	101,350	126,044	117,645	142,755
Dilutive restricted stock grants	10,458	13,331	7,383	13,847
Diluted weighted average common shares outstanding	10,468,802	10,427,038	10,405,315	10,480,061
Basic earnings (loss) per share (in dollars per share)	$ 0.27	$ 0.18	$ 1.24	$ 0.59
Diluted earnings (loss) per share (in dollars per share)	$ 0.27	$ 0.18	$ 1.22	$ 0.58

Earnings Per Share (Details)

Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount	0	0	0	0

Branch Acquisition (Narrative)

Branch Acquisition (Narrative) (Details) - USD ($)	Aug. 25, 2017	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 889,000	$ 889,000		$ 889,000
Acquisition related costs		$ 0	$ 6,000	$ 222,000
Opus Bank [Member]
Business Acquisition [Line Items]
Retail deposits	$ 74,700,000
Deposit premium rate	3.125%
Deposit premium, amount	$ 2,500,000
Fair Value of The Branch Owned	488,000
Fixed assets	56,000
Adjustments at Closing Date	14,000
Cash payment to acquire business	71,600,000
Core Deposits Intangible [Member] | Opus Bank [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	1,300,000
Goodwill	$ 889,000

Branch Acquisition (Pro Forma I

Branch Acquisition (Pro Forma Information) (Details) - Opus Bank [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenues (net interest income plus noninterest income)	$ 9,954	$ 28,845
Net income	$ 1,514	$ 4,976
Earnings per share - basic	$ 0.15	$ 0.48
Earnings per share - diluted	$ 0.14	$ 0.47

Branch Acquisition (Noninterest

Branch Acquisition (Noninterest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Business Acquisition [Line Items]
Salaries and employee benefits	$ 4,732	$ 4,406	$ 14,325	$ 13,100
Occupancy and equipment	814	726	2,412	1,785
Information Technology and Data Processing	356	372	1,031	1,131
Marketing	85	102	269	202
Other general and administrative	639	551	1,805	1,497
Total noninterest expense	7,201	$ 6,836	21,715	$ 19,740
Opus Bank [Member]
Business Acquisition [Line Items]
Salaries and employee benefits	251		792
Occupancy and equipment	91		309
Information Technology and Data Processing	1		1
Marketing	7		23
Other general and administrative	15		58
Total noninterest expense	$ 365		$ 1,183

Revenue Recognition Disaggregat

Revenue Recognition Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net gain (loss) on sale of investments	$ 1,000	$ 47,000	$ (20,000)	$ 103,000
Revenue from Contract with Customer, Excluding Assessed Tax	841,000	731,000	2,150,000	1,997,000
BOLI change in cash surrender value (1)
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	245,000	173,000	718,000	490,000
Wealth management revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	145,000	252,000	400,000	699,000
Deposit related fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	63,000	56,000	197,000	155,000
Debit card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	104,000	57,000	306,000	122,000
Loan related fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	163,000	61,000	353,000	215,000
Loan interest swap fees
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	110,000	83,000	180,000	205,000
Other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,000	$ 2,000	$ 16,000	$ 8,000

Revenue Recognition (Details)

Revenue Recognition (Details)	Sep. 30, 2018USD ($)
Revenue from Contract with Customer [Abstract]
Contract Liability	$ 0
Performance Obligation	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event [Member] shares in Thousands	Oct. 25, 2018$ / sharesshares
Subsequent Event [Line Items]
Dividend declared (usd per share) | $ / shares	$ 0.08
Percentage of authorized shares	5.00%
Number of authorized shares (in shares) | shares	550