First Northwest Bancorp (FNWB) 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. 02, 2018
Document Information [Abstract]
Entity Registrant Name	First Northwest Bancorp
Entity Central Index Key	1,556,727
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,018
Common Stock, Shares Outstanding		11,325,618

CONSOLIDATED BALANCE SHEETS (Un

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 14,195	$ 13,777
Interest-bearing deposits in banks	11,139	23,024
Investment securities available for sale, at fair value	267,105	290,242
Investment securities held to maturity, at amortized cost	43,908	50,126
Loans held for sale	191	788
Loans receivable (net of allowance for loan losses of $9,335 and $8,760)	839,458	779,111
Federal Home Loan Bank (FHLB) stock, at cost	6,326	7,023
Accrued interest receivable	3,914	3,745
Premises and equipment, net	15,460	13,739
Mortgage servicing rights, net	1,074	1,095
Bank-owned life insurance, net	29,172	28,724
Prepaid expenses and other assets	5,829	4,265
Total assets	1,237,771	1,215,659
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits	931,605	885,032
Borrowings	121,526	144,100
Accrued interest payable	360	325
Accrued expenses and other liabilities	10,529	7,929
Advances from borrowers for taxes and insurance	1,848	1,228
Total liabilities	1,065,868	1,038,614
Shareholders' Equity
Preferred stock, $0.01 par value, authorized 5,000,000 shares, no shares issued or outstanding	0	0
Common stock, $0.01 par value, authorized 75,000,000 shares; issued and outstanding 11,325,618 shares at September 30, 2018, and 11,785,507 shares at December 31, 2017	113	118
Additional paid-in capital	107,531	111,106
Retained earnings	80,880	78,602
Accumulated other comprehensive loss, net of tax	(5,907)	(1,573)
Unearned employee stock ownership plan (ESOP) shares	(10,714)	(11,208)
Total shareholders' equity	171,903	177,045
Total liabilities and shareholders' equity	$ 1,237,771	$ 1,215,659

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 9,335	$ 8,760
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	11,325,618	11,785,507
Common stock, shares outstanding (in shares)	11,325,618	11,785,507

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
INTEREST INCOME
Interest and fees on loans receivable	$ 9,257	$ 7,928	$ 26,792	$ 23,290
Interest on mortgage-backed securities	1,196	1,280	3,730	3,863
Interest on investment securities	952	765	2,787	2,054
Interest on deposits and other	50	34	136	79
FHLB dividends	100	36	237	100
Total interest income	11,555	10,043	33,682	29,386
INTEREST EXPENSE
Deposits	1,498	911	3,608	2,427
Borrowings	792	669	2,678	1,871
Total interest expense	2,290	1,580	6,286	4,298
Net interest income	9,265	8,463	27,396	25,088
PROVISION FOR LOAN LOSSES	197	0	902	500
Net interest income after provision for loan losses	9,068	8,463	26,494	24,588
NONINTEREST INCOME
Loan and deposit service fees	1,122	913	2,930	2,622
Mortgage servicing fees, net of amortization	23	114	155	227
Net gain on sale of loans	139	377	456	705
Net (loss) gain on sale of investment securities	(58)	136	77	136
Increase in cash surrender value of bank-owned life insurance	150	158	448	495
Income from death benefit on bank-owned life insurance, net	0	0	0	768
Other income	44	0	241	145
Total noninterest income	1,420	1,698	4,307	5,098
NONINTEREST EXPENSE
Compensation and benefits	4,740	4,466	14,296	13,749
Real estate owned and repossessed assets expense (income), net	14	8	41	(28)
Data processing	676	604	1,981	1,818
Occupancy and equipment	1,119	1,022	3,348	3,002
Supplies, postage, and telephone	211	211	685	605
Regulatory assessments and state taxes	172	128	453	398
Advertising	185	142	799	538
Professional fees	319	466	1,099	1,200
FDIC insurance premium	76	69	231	193
Other	607	691	1,759	1,769
Total noninterest expense	8,119	7,807	24,692	23,244
INCOME BEFORE PROVISION FOR INCOME TAXES	2,369	2,354	6,109	6,442
PROVISION FOR INCOME TAXES	443	581	1,134	1,390
NET INCOME	$ 1,926	$ 1,773	$ 4,975	$ 5,052
Basic earnings per share (in dollars per share)	$ 0.19	$ 0.17	$ 0.48	$ 0.47
Diluted earnings per share (in dollars per share)	$ 0.19	$ 0.17	$ 0.47	$ 0.47

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - 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	$ 1,926	$ 1,773	$ 4,975	$ 5,052
Unrealized (loss) gain on securities:
Unrealized holding (loss) gain, net of tax (benefit) provision of $(295), $(99), $(1,136), and $317, respectively	(1,117)	(193)	(4,295)	610
Reclassification adjustment for net loss (gain) on sales of securities realized in income, net of taxes of $12, $(46), $(11), and $(46), respectively	46	(90)	(39)	(90)
Other comprehensive (loss) income, net of tax	(1,071)	(283)	(4,334)	520
COMPREHENSIVE INCOME	$ 855	$ 1,490	$ 641	$ 5,572

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - 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]
Tax (benefit) provision	$ (295)	$ (99)	$ (1,136)	$ 317
Reclassification adjustments, tax	$ 12	$ (46)	$ (11)	$ (46)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Unearned ESOP Shares	Accumulated Other Comprehensive (Loss) Income, Net of Tax
Shares, beginning balance (in shares) at Dec. 31, 2016		12,153,946
Beginning balance at Dec. 31, 2016	$ 176,892	$ 122	$ 114,021	$ 75,833	$ (11,847)	$ (1,237)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,052			5,052
Common stock repurchased (in shares)		(348,700)
Common stock repurchased	(5,647)	$ (4)	(3,483)	(2,160)
Restricted stock awards granted (in shares)		50,000
Restricted stock awards granted	0
Restricted stock awards canceled (in shares)		(15,539)
Restricted stock award forfeitures net of grants	(282)		(282)
Other comprehensive loss, net of tax	520					520
Share-based compensation	788		788
ESOP shares committed to be released	605		131		474
Shares, ending balance (in shares) at Sep. 30, 2017		11,839,707
Ending balance at Sep. 30, 2017	$ 177,928	$ 118	111,175	78,725	(11,373)	(717)
Shares, beginning balance (in shares) at Dec. 31, 2017	11,785,507	11,785,507
Beginning balance at Dec. 31, 2017	$ 177,045	$ 118	111,106	78,602	(11,208)	(1,573)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,975			4,975
Common stock repurchased (in shares)		(423,213)
Common stock repurchased	(6,929)	$ (4)	(4,228)	(2,697)
Restricted stock awards granted (in shares)		(18,600)
Restricted stock awards granted	0
Restricted stock awards canceled (in shares)		(18,076)
Restricted stock award forfeitures net of grants	(293)	$ (1)	(292)
Other comprehensive loss, net of tax	(4,334)					(4,334)
Share-based compensation	788		788
ESOP shares committed to be released	$ 651		157		494
Shares, ending balance (in shares) at Sep. 30, 2018	11,325,618	11,325,618
Ending balance at Sep. 30, 2018	$ 171,903	$ 113	$ 107,531	$ 80,880	$ (10,714)	$ (5,907)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,975	$ 5,052
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	993	902
Amortization and accretion of premiums and discounts on investments, net	1,433	744
Amortization (accretion) of deferred loan fees, net	25	(233)
Amortization of mortgage servicing rights, net	180	118
Additions to mortgage servicing rights, net	(159)	(194)
Provision for loan losses	902	500
Gain on sale of real estate owned and repossessed assets	0	(36)
Allocation of ESOP shares	651	605
Share-based compensation	788	788
Gain on sale of loans, net	(456)	(705)
Gain on sale of securities available for sale, net	(50)	(136)
Gain on sale of securities held to maturity, net	(27)	0
Increase in cash surrender value of life insurance, net	(448)	(495)
Income from death benefit on bank-owned life insurance, net	0	(768)
Origination of loans held for sale	(16,054)	(23,057)
Proceeds from loans held for sale	17,107	24,239
Change in assets and liabilities:
Increase in accrued interest receivable	(169)	(483)
Increase in prepaid expenses and other assets	(412)	(32)
Increase in accrued interest payable	35	13
Increase in accrued expenses and other liabilities	2,600	2,043
Net cash from operating activities	11,914	8,865
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of securities available for sale	(63,046)	(130,822)
Proceeds from maturities, calls, and principal repayments of securities available for sale	20,164	46,110
Proceeds from sales of securities available for sale	56,683	17,239
Proceeds from maturities, calls, and principal repayments of securities held to maturity	6,010	2,542
Proceeds from sales of securities held to maturity	2,702	0
Redemption (purchase) of FHLB stock	697	(1,930)
Proceeds from sale of real estate owned and repossessed assets	0	194
Net increase in loans receivable	(61,274)	(36,871)
Purchase of premises and equipment, net	(2,714)	(431)
Net cash from investing activities	(40,778)	(103,969)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	46,573	56,861
Net (decrease) increase in FHLB short-term advances	(22,574)	45,774
Net increase in advances from borrowers for taxes and insurance	620	757
Net share settlement of stock awards	(293)	(282)
Repurchase of common stock	(6,929)	(5,647)
Net cash from financing activities	17,397	97,463
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(11,467)	2,359
CASH AND CASH EQUIVALENTS, beginning of period	36,801	22,650
CASH AND CASH EQUIVALENTS, end of period	25,334	25,009
Cash paid during the year for:
Interest on deposits and borrowings	6,251	4,285
Income taxes	700	845
NONCASH INVESTING ACTIVITIES
Unrealized (loss) gain on securities available for sale	(5,481)	791
Loans transferred to real estate owned and repossessed assets, net of deferred loan fees and allowance for loan losses	$ 154	$ 134

Basis of Presentation and Criti

Basis of Presentation and Critical Accounting Policies	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Critical Accounting Policies	Basis of Presentation and Critical Accounting Policies Organization and Nature of business - First Northwest Bancorp, a Washington corporation, became the holding company of First Federal Savings and Loan Association of Port Angeles on January 29, 2015, upon completion of the Bank's conversion from a mutual to stock form of organization (the "Conversion"). In connection with the Conversion, the Company issued an aggregate of 12,167,000 shares of common stock at an offering price of $10.00 per share for gross proceeds of $121.7 million . An additional 933,360 shares of Company common stock and $400,000 in cash were contributed to the First Federal Community Foundation ("Foundation"), a charitable foundation that was established in connection with the Conversion, resulting in the issuance of a total of 13,100,360 shares. The Company received $117.6 million in net proceeds from the stock offering of which $58.4 million were contributed to the Bank upon Conversion. Pursuant to the Bank's Plan of Conversion (the "Plan") adopted by its Board of Directors, and as approved by its members, the Company established an employee stock ownership plan ("ESOP"). On December 18, 2015, the ESOP completed its open market purchases, with funds borrowed from the Company, of 8% of the common stock issued in the Conversion for a total of 1,048,029 shares. First Northwest's business activities generally are limited to passive investment activities and oversight of its investment in First Federal. Accordingly, the information set forth in this report, including the consolidated unaudited financial statements and related data, relates primarily to the Bank. The Bank is a community-oriented financial institution providing commercial and consumer banking services to individuals and businesses in Western Washington State with offices in Clallam, Jefferson, Kitsap, and Whatcom counties. These services include deposit and lending transactions that are supplemented with borrowing and investing activities. 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 our audited consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-KT for the six months ended December 31, 2017 . In our opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of the consolidated financial statements in accordance with GAAP have been included. The Company changed its fiscal year from June 30 to December 31 effective December 31, 2017. Operating results for the three and nine months ended September 30, 2018 , are not necessarily indicative of the results that may be expected for future periods. In preparing the unaudited interim 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 in the near term relate to a determination of the allowance for loan losses ("ALLL"), mortgage servicing rights, fair value of financial instruments, deferred tax assets and liabilities, and the valuation of impaired loans. Principles of consolidation - The accompanying consolidated financial statements include the accounts of First Northwest Bancorp and its wholly owned subsidiary, First Federal. All material intercompany accounts and transactions have been eliminated in consolidation. Subsequent Events - The Company has evaluated subsequent events for potential recognition and disclosure and determined there are no such events or transactions requiring recognition or disclosure. Recently adopted accounting pronouncements - 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): Deferral of the Effective Date , 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. In general, the new guidance requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. These standards were effective for interim and annual periods beginning after December 15, 2017. The Company has analyzed its revenue 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 as the Company did not identify any significant changes in the timing of revenue recognition when considering the amended accounting guidance since it is consistent with the Company’s current accounting policy for contracts. In January 2016, the 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 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 used the exit price notion in the fair value disclosure of financial instruments in Note 9 of this report. The adoption of ASU 2016-01 did not have a material impact on the Company’s consolidated financial statements or disclosures in the Notes to the Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . The ASU provides specific guidance on eight classification issues in order to achieve more consistent reporting. 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 March 2017, the 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 using the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019. Early adoption is permitted. The adoption of ASU 2017-08 did not have a material impact on the Company's consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting . This ASU provides clarity on the guidance related to stock compensation when there have been changes to the terms or conditions of a share-based payment award to which an entity would be required to apply modification accounting under ASC 718. The ASU provides the three following criteria must be met in order to not account for the effect of the modification of terms or conditions: the fair value, the vesting conditions and the classification as an equity or liability instrument of the modified award is the same as the original award immediately before the original award is modified. The amendments in this ASU were effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. The Company has not had any modifications on share-based payment awards and therefore the adoption of ASU 2017-09 did not have a material impact on the Company’s consolidated financial statements. 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 Cuts and Jobs 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 on Form 10-KT as of December 31, 2017. As of September 30, 2018 , the Company did not incur any adjustments to the provisional recognition. Recently issued accounting pronouncements Lease Accounting In February 2016, the FASB issued ASU No. 2016-02, Leases . ASU 2016-02 is intended to increase transparency and comparability among organizations by requiring the recognition of lease assets and lease liabilities on the balance sheet and disclosure of key information about leasing arrangements. The principal change required by this ASU relates to lessee accounting, and is that for operating leases, a lessee is required to (1) recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position, (2) recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis, and (3) classify all cash payments within operating activities in the statement of cash flows. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. ASU 2016-02 also changes disclosure requirements related to leasing activities, and requires certain qualitative disclosures along with specific quantitative disclosures. The amendments in ASU 2016-02 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Early application of the amendments in ASU 2016-02 is permitted. Once adopted, we expect to report higher assets and liabilities on our Consolidated Balance Sheets as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under noncancelable operating lease agreements, which currently are not reflected in our Consolidated Balance Sheets. We do not expect the guidance to have a material impact on the Consolidated Statements of Income or Consolidated Statements of Changes in Shareholders' Equity. ASU 2016-02 initially provided for one retrospective transition method; however a second transition method was later added with ASU 2018-11 which permits companies to utilize certain practical expedients. In July 2018, FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases . These amendments provide minor clarifications and corrections to ASU 2016-02, Leases (Topic 842) . In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements . The amendments in this ASU provide entities with an additional optional transition method to adopt ASU 2016-02. Under this new transition method, an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Consequently, an entity’s reporting under this additional transition method for the comparative periods presented in the financial statements in which it adopts the new leases standard would continue to be in accordance with current GAAP (Topic 840, Leases ). The Company will adopt ASU 2016-02 (as amended by subsequent ASUs) effective January 1, 2019 utilizing the new transition method described in ASU 2018-11 and will avail itself of practical expedients. As a lessee, the Company is party to several office leases with future payment obligations including all available extensions aggregating approximately $9 million at September 30, 2018 for which the Company expects to record right-of-use assets and lease liabilities at the present value of the remaining minimum rental payments upon adoption of ASU 2016-02. As lessee, the Company expects to apply the following practical expedients in the implementation ASU 2016-02: (i) to not separate non-lease components from the associated lease component as described above and (ii) to not apply the right-of-use recognition requirements to short-term leases. Other Accounting Topics In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Loss , which updates the guidance on recognition and measurement of credit losses for financial assets. The new requirements, known as the current expected credit loss model (CECL) will require entities to adopt an impairment model based on expected losses rather than incurred losses. ASU No. 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Upon adoption, the Company will change processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. At this time, we do not anticipate an increase to the ALLL as a result of the implementation of this ASU based on the preliminary review and testing of different models being evaluated. The Company has formed an internal project management team which will coordinate and monitor implementation progress, work with our third-party vendor, and implement changes to processes and procedures to ensure the Company is fully compliant with the amendments at the adoption date. 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. Adoption of ASU 2017-12 is not expected to have a material impact on the Company’s consolidated financial statements. In June 2018, FASB issued ASU No. 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting . These amendments provide specific guidance for transactions for acquiring goods and services from nonemployees and specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (i) financing to the issuer or (ii) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers . This guidance is effective for fiscal years beginning after December 15, 2018, and interim periods beginning after December 15, 2020. Early adoption is permitted but not earlier than the adoption of Topic 606. The Company does not believe that this guidance will have a material effect on its consolidated financial statements as it has not historically issued share-based payments in exchange for goods or services to be consumed within its operations. In July 2018, FASB issued ASU No. 2018-09, Codification Improvements . These amendments provide clarifications and corrections to certain ASC subtopics including the following: 220-10 (Income Statement - Reporting Comprehensive Income - Overall), 470-50 (Debt - Modifications and Extinguishments), 480-10 (Distinguishing Liabilities from Equity - Overall), 718-740 (Compensation - Stock Compensation - Income Taxes), 805-740 (Business Combinations - Income Taxes), 815-10 (Derivatives and Hedging - Overall), and 820-10 (Fair Value Measurement - Overall). Some of the amendments in ASU 2018-09 do not require transition guidance and will be effective upon issuance; however, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2018. The Company is currently assessing the impact this guidance will have on its consolidated financial statements. In August 2018, FASB issued ASU No. 2018-13, Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement which removes, modifies, and adds certain disclosure requirements related to fair value measurements in ASC 820. This guidance is effective for public companies in fiscal years beginning after December 15, 2019 with early adoption permitted. The Company is currently assessing the impact this guidance will have on its consolidated financial statements. In August 2018, FASB issued ASU No. 2018-15 Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract to provide guidance on implementation costs incurred in a cloud computing arrangement that is a service contract. The ASU aligns the accounting for such costs with the guidance on capitalizing costs associated with developing or obtaining internal-use software. Specifically, the ASU amends ASC 350 to include in its scope implementation costs of such arrangements that are service contracts and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized. This ASU, which is effective for fiscal years beginning after December 15, 2019, is not expected to have a material impact on the Company’s financial statements. In August 2018, the Securities and Exchange Commission issued a final rule that amends certain of its disclosure requirements. The rule simplifies various disclosure requirements for public companies including primarily that it (i) eliminates the requirement for public companies to disclose in their filings a schedule of earnings to fixed charges, (ii) requires an analysis of changes in stockholders’ equity for the current and comparative year-to-date interim periods in interim reports, and (iii) reduces the requirements for market price information disclosures in annual reports. These changes are effective for public companies beginning on November 5, 2018. The Company anticipates complying with these new requirements beginning with its 2018 Annual Report on Form 10-K. Reclassifications - 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 net income or shareholders' equity.

Securities

Securities	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The amortized cost, gross unrealized gains and losses, and estimated fair value of securities classified as available-for-sale and held-to-maturity at September 30, 2018 , are summarized as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In thousands) Available for Sale Municipal bonds $ 882 $ — $ (23 ) $ 859 U.S. government agency issued asset-backed securities (ABS agency) 26,182 61 (251 ) 25,992 Corporate issued asset-backed securities (ABS corporate) 37,904 — (436 ) 37,468 Corporate issued debt securities (Corporate debt) 9,986 106 (266 ) 9,826 U.S. Small Business Administration securities (SBA) 37,339 4 (568 ) 36,775 Mortgage-backed securities: U.S. government agency issued mortgage-backed securities (MBS agency) 150,986 — (5,824 ) 145,162 Corporate issued mortgage-backed securities (MBS corporate) 11,331 — (308 ) 11,023 Total securities available for sale $ 274,610 $ 171 $ (7,676 ) $ 267,105 Held to Maturity Municipal bonds $ 11,987 $ 44 $ (9 ) $ 12,022 SBA 343 — (2 ) 341 Mortgage-backed securities: MBS agency 31,578 — (1,077 ) 30,501 Total securities held to maturity $ 43,908 $ 44 $ (1,088 ) $ 42,864 The amortized cost, gross unrealized gains and losses, and estimated fair value of securities classified as available-for-sale and held-to-maturity at December 31, 2017 , are summarized as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In thousands) Available for Sale Municipal bonds $ 13,058 $ 391 $ (15 ) $ 13,434 ABS agency 21,972 36 (238 ) 21,770 ABS corporate 22,823 — (55 ) 22,768 Corporate debt 19,835 195 (122 ) 19,908 SBA 47,325 98 (149 ) 47,274 Mortgage-backed securities: MBS agency 146,532 36 (2,026 ) 144,542 MBS corporate 20,721 18 (193 ) 20,546 Total securities available for sale $ 292,266 $ 774 $ (2,798 ) $ 290,242 Held to Maturity Municipal bonds $ 13,963 $ 156 $ — $ 14,119 SBA 399 — (4 ) 395 Mortgage-backed securities: MBS agency 35,764 338 (350 ) 35,752 Total securities held to maturity $ 50,126 $ 494 $ (354 ) $ 50,266 The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of September 30, 2018 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (16 ) $ 750 $ (7 ) $ 109 $ (23 ) $ 859 ABS agency (131 ) 8,778 (120 ) 2,487 (251 ) 11,265 ABS corporate (287 ) 24,966 (149 ) 12,501 (436 ) 37,467 Corporate debt — — (266 ) 4,720 (266 ) 4,720 SBA (156 ) 14,878 (412 ) 16,728 (568 ) 31,606 Mortgage-backed securities: MBS agency (1,536 ) 56,190 (4,288 ) 88,972 (5,824 ) 145,162 MBS corporate (80 ) 7,011 (228 ) 4,012 (308 ) 11,023 Total available for sale $ (2,206 ) $ 112,573 $ (5,470 ) $ 129,529 $ (7,676 ) $ 242,102 Held to Maturity Municipal bonds $ (9 ) $ 1,278 $ — $ — $ (9 ) $ 1,278 SBA (1 ) 125 (1 ) 216 (2 ) 341 Mortgage-backed securities: MBS agency (339 ) 12,390 (738 ) 18,101 (1,077 ) 30,491 Total held to maturity $ (349 ) $ 13,793 $ (739 ) $ 18,317 $ (1,088 ) $ 32,110 The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of December 31, 2017 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (11 ) $ 4,276 $ (4 ) $ 114 $ (15 ) $ 4,390 ABS agency — — (238 ) 7,294 (238 ) 7,294 ABS corporate (55 ) 22,768 — — (55 ) 22,768 Corporate debt (122 ) 4,864 — — (122 ) 4,864 SBA (45 ) 7,421 (104 ) 8,067 (149 ) 15,488 Mortgage-backed securities: MBS agency (394 ) 57,081 (1,632 ) 85,421 (2,026 ) 142,502 MBS corporate (22 ) 5,808 (171 ) 10,172 (193 ) 15,980 Total available for sale $ (649 ) $ 102,218 $ (2,149 ) $ 111,068 $ (2,798 ) $ 213,286 Held to Maturity SBA $ (4 ) $ 395 $ — $ — $ (4 ) $ 395 Mortgage-backed securities: MBS agency (6 ) 1,001 (344 ) 18,494 (350 ) 19,495 Total held to maturity $ (10 ) $ 1,396 $ (344 ) $ 18,494 $ (354 ) $ 19,890 The Company may hold certain investment securities in an unrealized loss position that are not considered other than temporarily impaired ("OTTI"). At September 30, 2018 and December 31, 2017 , there were 75 and 63 investment securities in an unrealized loss position, respectively. We believe that the unrealized losses on our investment securities relate principally to the general change in interest rates and illiquidity, and not credit quality, that has occurred since the initial purchase, and such unrecognized losses or gains will continue to vary with general interest rate level fluctuations in the future. Certain investments in a loss position are guaranteed by government entities or government sponsored entities. The Company does not intend to sell the securities in an unrealized loss position and believes it is not likely it will be required to sell these investments prior to a market price recovery or maturity. There were no OTTI losses during the three and nine months ended September 30, 2018 and 2017 . The amortized cost and estimated fair value of investment securities by contractual maturity are shown in the following tables at the dates indicated. Expected maturities of mortgage-backed securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties; therefore, these securities are shown separately. September 30, 2018 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value (In thousands) Mortgage-backed securities: Due within one year $ — $ — $ — $ — Due after one through five years 7,244 6,994 661 647 Due after five through ten years 12,117 11,620 2,206 2,119 Due after ten years 142,956 137,571 28,711 27,735 Total mortgage-backed securities 162,317 156,185 31,578 30,501 All other investment securities: Due within one year — — — — Due after one through five years — — 736 739 Due after five through ten years 19,621 19,209 6,807 6,811 Due after ten years 92,672 91,711 4,787 4,813 Total all other investment securities 112,293 110,920 12,330 12,363 Total investment securities $ 274,610 $ 267,105 $ 43,908 $ 42,864 December 31, 2017 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value (In thousands) Mortgage-backed securities: Due within one year $ — $ — $ — $ — Due after one through five years 7,363 7,260 1,957 1,973 Due after five through ten years 13,337 13,127 2,835 2,792 Due after ten years 146,553 144,701 30,972 30,987 Total mortgage-backed securities 167,253 165,088 35,764 35,752 All other investment securities: Due within one year — — — — Due after one through five years 4,388 4,380 — — Due after five through ten years 29,482 29,661 9,491 9,574 Due after ten years 91,143 91,113 4,871 4,940 Total all other investment securities 125,013 125,154 14,362 14,514 Total investment securities $ 292,266 $ 290,242 $ 50,126 $ 50,266 Sales of securities available-for-sale for the periods shown are summarized as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Proceeds from sales $ 1,979 $ 17,239 $ 56,683 $ 17,239 Gross realized gains — 269 233 269 Gross realized losses (58 ) (133 ) (183 ) (133 ) During the nine months ended September 30, 2018, the Bank sold certain held to maturity investments that had substantially reached maturity, allowing us to sell the securities without tainting the remaining held to maturity securities portfolio. The held-to-maturity designation of the remaining securities is unchanged. Gross proceeds on the sale of these securities totaled $2.7 million with gross realized gains and losses of $32,000 and $5,000 , respectively.

Loans Receivable

Loans Receivable	9 Months Ended
	Sep. 30, 2018
Loans and Leases Receivable Disclosure [Abstract]
Loans Receivable	Loans Receivable Loans receivable consisted of the following at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Real Estate: One-to-four family $ 336,739 $ 355,391 Multi-family 85,229 73,767 Commercial real estate 239,431 202,956 Construction and land 59,219 71,145 Total real estate loans 720,618 703,259 Consumer: Home equity 38,744 38,473 Auto and other consumer 70,003 28,106 Total consumer loans 108,747 66,579 Commercial business loans 16,432 16,303 Total loans 845,797 786,141 Less: Net deferred loan fees (821 ) 724 Premium on purchased loans, net (2,175 ) (2,454 ) Allowance for loan losses 9,335 8,760 Total loans receivable, net $ 839,458 $ 779,111 Allowance for Loan Losses. The Company maintains a general allowance for loan losses based on evaluating known and inherent risks in the loan portfolio, including management’s continuing analysis of the factors underlying the quality of the loan portfolio. These factors include changes in the size and composition of the loan portfolio, actual loan loss experience, and current and anticipated economic conditions. The reserve is an estimate based upon factors and trends identified by management at the time the financial statements are prepared. The following tables summarize changes in the ALLL and loan portfolio by segment and impairment method for the periods shown: At or For the Three Months Ended September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) ALLL: Beginning balance $ 3,050 $ 841 $ 2,160 $ 514 $ 642 $ 1,332 $ 716 $ 27 $ 9,282 Provision for loan losses 3 (31 ) (47 ) 28 (81 ) 179 (31 ) 177 197 Charge-offs (2 ) — — — — (265 ) — — (267 ) Recoveries 2 — — — 7 114 — — 123 Ending balance $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 At or For the Nine Months Ended September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) ALLL: Beginning balance $ 3,061 $ 648 $ 1,847 $ 648 $ 787 $ 712 $ 265 $ 792 $ 8,760 Provision for loan losses 6 162 266 (107 ) (242 ) 986 419 (588 ) 902 Charge-offs (18 ) — — — — (522 ) — — (540 ) Recoveries 4 — — 1 23 184 1 — 213 Ending balance $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 At September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) Total ALLL $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 General reserve 3,013 809 2,105 541 563 1,334 125 204 8,694 Specific reserve 40 1 8 1 5 26 560 — 641 Total loans $ 336,739 $ 85,229 $ 239,431 $ 59,219 $ 38,744 $ 70,003 $ 16,432 $ — $ 845,797 Loans collectively evaluated (1) 332,948 85,117 237,430 59,102 38,139 69,873 15,594 — 838,203 Loans individually evaluated (2) 3,791 112 2,001 117 605 130 838 — 7,594 (1) Loans collectively evaluated for general reserves. (2) Loans individually evaluated for specific reserves. At or For the Three Months Ended September 30, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total ALLL: (In thousands) Beginning balance $ 3,071 $ 511 $ 1,735 $ 683 $ 818 $ 523 $ 1,168 $ 14 $ 8,523 Provision for loan losses (263 ) 8 (93 ) 75 (71 ) 87 (1,043 ) 1,300 — Charge-offs — — — — — (70 ) — — (70 ) Recoveries 100 — — — 16 39 — — 155 Ending balance $ 2,908 $ 519 $ 1,642 $ 758 $ 763 $ 579 $ 125 $ 1,314 $ 8,608 At or For the Nine Months Ended September 30, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total ALLL: (In thousands) Beginning balance $ 2,892 $ 370 $ 1,488 $ 585 $ 794 $ 361 $ 652 $ 918 $ 8,060 Provision for loan losses (111 ) 149 154 172 (103 ) 366 (523 ) 396 500 Charge-offs — — — — (79 ) (239 ) (5 ) — (323 ) Recoveries 127 — — 1 151 91 1 — 371 Ending balance $ 2,908 $ 519 $ 1,642 $ 758 $ 763 $ 579 $ 125 $ 1,314 $ 8,608 At December 31, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) Total ALLL $ 3,061 $ 648 $ 1,847 $ 648 $ 787 $ 712 $ 265 $ 792 $ 8,760 General reserve 3,014 647 1,719 647 779 703 262 792 8,563 Specific reserve 47 1 128 1 8 9 3 — 197 Total loans $ 355,391 $ 73,767 $ 202,956 $ 71,145 $ 38,473 $ 28,106 $ 16,303 $ — $ 786,141 Loans collectively evaluated (1) 351,545 73,652 201,885 71,093 37,838 28,047 16,020 — 780,080 Loans individually evaluated (2) 3,846 115 1,071 52 635 59 283 — 6,061 (1) Loans collectively evaluated for general reserves. (2) Loans individually evaluated for specific reserves. Impaired loans. A loan is considered impaired when First Federal has determined that it may be unable to collect payments of principal or interest when due under the contractual terms of the loan. In the process of identifying loans as impaired, management takes into consideration factors that include payment history and status, collateral value, financial condition of the borrower, and the probability of collecting scheduled payments in the future. Minor payment delays and insignificant payment shortfalls typically do not result in a loan being classified as impaired. The significance of payment delays and shortfalls is considered by management on a case-by-case basis after taking into consideration the totality of circumstances surrounding the loans and the borrowers, including payment history and amounts of any payment shortfall, length and reason for delay, and likelihood of return to stable performance. Impairment is measured on a loan-by-loan basis for all loans in the portfolio except smaller balance homogeneous loans and certain qualifying troubled debt restructuring ("TDR") loans. The following table presents a summary of loans individually evaluated for impairment by portfolio segment at the dates indicated: September 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) With no allowance recorded: One-to-four family $ 310 $ 343 $ — $ 382 $ 407 $ — Commercial real estate 1,329 1,389 — 256 378 — Construction and land — 2 — — 3 — Home equity 340 442 — 365 515 — Auto and other consumer — 283 — — 124 — Commercial business — 4 — — 4 — Total 1,979 2,463 — 1,003 1,431 — With an allowance recorded: One-to-four family 3,481 3,768 40 3,464 3,718 47 Multi-family 112 112 1 115 115 1 Commercial real estate 672 672 8 815 821 128 Construction and land 117 143 1 52 76 1 Home equity 265 333 5 270 338 8 Auto and other consumer 130 130 26 59 67 9 Commercial business 838 838 560 283 283 3 Total 5,615 5,996 641 5,058 5,418 197 Total impaired loans: One-to-four family 3,791 4,111 40 3,846 4,125 47 Multi-family 112 112 1 115 115 1 Commercial real estate 2,001 2,061 8 1,071 1,199 128 Construction and land 117 145 1 52 79 1 Home equity 605 775 5 635 853 8 Auto and other consumer 130 413 26 59 191 9 Commercial business 838 842 560 283 287 3 Total $ 7,594 $ 8,459 $ 641 $ 6,061 $ 6,849 $ 197 The following table presents the average recorded investment in loans individually evaluated for impairment and the related interest income recognized for the periods shown: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) With no allowance recorded: One-to-four family $ 401 $ 9 $ 405 $ 12 Commercial real estate 1,334 13 2,148 34 Construction and land — — 1,658 — Home equity 344 3 353 3 Auto and other consumer — 7 — 11 Total 2,079 32 4,564 60 With an allowance recorded: One-to-four family 2,978 74 3,046 156 Multi-family 112 1 113 4 Commercial real estate 708 9 763 26 Construction and land 71 5 57 6 Home equity 266 7 274 16 Auto and other consumer 76 3 98 4 Commercial business 852 14 796 50 Total 5,063 113 5,147 262 Total impaired loans: One-to-four family 3,379 83 3,451 168 Multi-family 112 1 113 4 Commercial real estate 2,042 22 2,911 60 Construction and land 71 5 1,715 6 Home equity 610 10 627 19 Auto and other consumer 76 10 98 15 Commercial business 852 14 796 50 Total $ 7,142 $ 145 $ 9,711 $ 322 Interest income recognized on a cash basis on impaired loans for the three and nine months ended September 30, 2018 , was $101,000 and $278,000 , respectively. The following table presents the average recorded investment in loans individually evaluated for impairment and the related interest income recognized for the periods shown: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) With no allowance recorded: One-to-four family $ 778 $ 12 $ 1,069 $ 48 Commercial real estate 318 — 310 1 Home equity 379 5 356 17 Auto and other consumer — 3 — 6 Total 1,475 20 1,735 72 With an allowance recorded: One-to-four family 3,800 72 3,922 219 Multi-family 117 1 119 3 Commercial real estate 1,061 10 1,211 44 Construction and land 27 2 19 3 Home equity 312 7 336 21 Auto and other consumer 20 — 24 — Commercial business 288 4 310 12 Total 5,625 96 5,941 302 Total impaired loans: One-to-four family 4,578 84 4,991 267 Multi-family 117 1 119 3 Commercial real estate 1,379 10 1,521 45 Construction and land 27 2 19 3 Home equity 691 12 692 38 Auto and other consumer 20 3 24 6 Commercial business 288 4 310 12 Total $ 7,100 $ 116 $ 7,676 $ 374 Interest income recognized on a cash basis on impaired loans for the three and nine months ended September 30, 2017 , was $80,000 and $251,000 , respectively. The following table presents the recorded investment in nonaccrual loans by class of loan at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family $ 1,175 $ 681 Commercial real estate 143 378 Construction and land 117 52 Home equity 344 365 Auto and other consumer 131 59 Commercial business 563 — Total nonaccrual loans $ 2,473 $ 1,535 Past due loans. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. There were no loans past due 90 days or more and still accruing interest at September 30, 2018 and December 31, 2017 . The following table presents past due loans, net of partial loan charge-offs, by class, as of September 30, 2018 : 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans (In thousands) Real Estate: One-to-four family $ 571 $ — $ 168 $ 739 $ 336,000 $ 336,739 Multi-family — — — — 85,229 85,229 Commercial real estate — — — — 239,431 239,431 Construction and land — — 72 72 59,147 59,219 Total real estate loans 571 — 240 811 719,807 720,618 Consumer: Home equity 4 78 4 86 38,658 38,744 Auto and other consumer 351 59 — 410 69,593 70,003 Total consumer loans 355 137 4 496 108,251 108,747 Commercial business loans — — — — 16,432 16,432 Total loans $ 926 $ 137 $ 244 $ 1,307 $ 844,490 $ 845,797 The following table presents past due loans, net of partial loan charge-offs, by class, as of December 31, 2017 : 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans (In thousands) Real Estate: One-to-four family $ 213 $ — $ 231 $ 444 $ 354,947 $ 355,391 Multi-family — — — — 73,767 73,767 Commercial real estate 91 — — 91 202,865 202,956 Construction and land 1,187 — 19 1,206 69,939 71,145 Total real estate loans 1,491 — 250 1,741 701,518 703,259 Consumer: Home equity 383 78 — 461 38,012 38,473 Auto and other consumer 77 30 — 107 27,999 28,106 Total consumer loans 460 108 — 568 66,011 66,579 Commercial business loans 648 — — 648 15,655 16,303 Total loans $ 2,599 $ 108 $ 250 $ 2,957 $ 783,184 $ 786,141 Credit quality indicator. Federal regulations provide for the classification of lower quality loans and other assets, such as debt and equity securities, as substandard, doubtful, or loss; risk ratings 6, 7, and 8 in our 8-point risk rating system, respectively. An asset is considered substandard if it is inadequately protected by the current net worth and pay capacity of the borrower or of any collateral pledged. Substandard assets include those characterized by the distinct possibility that First Federal will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all the weaknesses inherent in those classified 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 those considered uncollectible and of such little value that their continuance as assets without the establishment of a specific loss reserve is not warranted. When First Federal classifies problem assets as either substandard or doubtful, it may establish a specific allowance to address the risk specifically or allow the loss to be addressed in the general allowance. General allowances represent loss allowances that have been established to recognize the inherent risk associated with lending activities but that, unlike specific allowances, have not been specifically allocated to particular problem assets. When an insured institution classifies problem assets as a loss, it is required to charge off such assets in the period in which they are deemed uncollectible. Assets that do not currently expose First Federal to sufficient risk to warrant classification as substandard or doubtful but do possess identified weaknesses are designated as either watch or special mention assets; risk ratings 4 and 5 in our risk rating system, respectively. Loans not otherwise classified are considered pass graded loans and are rated 1-3 in our risk rating system. Additionally, First Federal categorizes loans as performing or nonperforming based on payment activity. Loans that are more than 90 days past due and nonaccrual loans are considered nonperforming. The following table represents the internally assigned grade as of September 30, 2018 , by class of loans: Pass Watch Special Mention Substandard Doubtful Total (In thousands) Real Estate: One-to-four family $ 330,600 $ 4,314 $ 975 $ 850 $ — $ 336,739 Multi-family 85,117 — 112 — — 85,229 Commercial real estate 232,986 4,317 672 1,456 — 239,431 Construction and land 52,251 6,851 — 117 — 59,219 Total real estate loans 700,954 15,482 1,759 2,423 — 720,618 Consumer: Home equity 37,422 771 93 458 — 38,744 Auto and other consumer 68,696 936 146 216 9 70,003 Total consumer loans 106,118 1,707 239 674 9 108,747 Commercial business loans 14,972 622 275 563 — 16,432 Total loans $ 822,044 $ 17,811 $ 2,273 $ 3,660 $ 9 $ 845,797 The following table represents the internally assigned grade as of December 31, 2017 , by class of loans: Pass Watch Special Mention Substandard Total (In thousands) Real Estate: One-to-four family $ 348,273 $ 4,134 $ 1,580 $ 1,404 $ 355,391 Multi-family 71,535 2,117 115 — 73,767 Commercial real estate 188,251 9,893 964 3,848 202,956 Construction and land 59,360 8,040 3,662 83 71,145 Total real estate loans 667,419 24,184 6,321 5,335 703,259 Consumer: Home equity 37,502 323 93 555 38,473 Auto and other consumer 27,646 202 146 112 28,106 Total consumer loans 65,148 525 239 667 66,579 Commercial business loans 14,230 653 772 648 16,303 Total loans $ 746,797 $ 25,362 $ 7,332 $ 6,650 $ 786,141 The following table represents the credit risk profile based on payment activity as of September 30, 2018 , by class of loans: Nonperforming Performing Total (In thousands) Real Estate: One-to-four family $ 1,175 $ 335,564 $ 336,739 Multi-family — 85,229 85,229 Commercial real estate 143 239,288 239,431 Construction and land 117 59,102 59,219 Consumer: Home equity 344 38,400 38,744 Auto and other consumer 131 69,872 70,003 Commercial business 563 15,869 16,432 Total loans $ 2,473 $ 843,324 $ 845,797 The following table represents the credit risk profile based on payment activity as of December 31, 2017 , by class of loans: Nonperforming Performing Total (In thousands) Real Estate: One-to-four family $ 681 $ 354,710 $ 355,391 Multi-family — 73,767 73,767 Commercial real estate 378 202,578 202,956 Construction and land 52 71,093 71,145 Consumer: Home equity 365 38,108 38,473 Auto and other consumer 59 28,047 28,106 Commercial business — 16,303 16,303 Total loans $ 1,535 $ 784,606 $ 786,141 Troubled debt restructuring. A TDR is a loan to a borrower who is experiencing financial difficulty that has been modified from its original terms and conditions in such a way that First Federal is granting the borrower a concession of some kind. First Federal has granted a variety of concessions to borrowers in the form of loan modifications. The modifications are generally related to the loan's interest rate, term and payment amount or a combination thereof. Upon identifying a receivable as a TDR loan, First Federal classifies the loan as impaired for purposes of determining the allowance for loan losses. This requires the loan to initially be evaluated individually for impairment, generally based on the expected cash flows under the new terms discounted at the loan’s original effective interest rates. For TDR loans that subsequently default, the method of determining impairment is generally the fair value of the collateral less estimated selling costs. TDR loans may be upgraded in their classification and placed on accrual status once there is a sustained period of repayment performance, usually six months or longer, and there is a reasonable assurance that repayment will continue. First Federal allows reclassification of a troubled debt restructuring back into the general loan pool (as a non-troubled debt restructuring) if the borrower is able to refinance the loan at then-current market rates and meet all of the underwriting criteria of First Federal required of other borrowers. The refinance must be based on the borrower’s ability to repay the debt and no special concessions of rate and/or term are granted to the borrower. The following table is a summary of information pertaining to TDR loans included in impaired loans at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Total TDR loans $ 3,907 $ 4,919 Allowance for loan losses related to TDR loans 44 182 Total nonaccrual TDR loans 84 393 The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the three months ended September 30, 2018 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Modification Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 1 $ — $ — $ 49 $ 49 1 $ — $ — $ 49 $ 49 Post-modification outstanding recorded investment One- to four-family 1 $ — $ — $ 47 $ 47 1 $ — $ — $ 47 $ 47 The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the nine months ended September 30, 2018 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Modification Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 3 $ — $ — $ 229 $ 229 3 $ — $ — $ 229 $ 229 Post-modification outstanding recorded investment One- to four-family 3 $ — $ — $ 260 $ 260 3 $ — $ — $ 260 $ 260 There were no TDR loans which incurred a payment default within 12 months of the restructure date during the three and nine months ended September 30, 2018 . There were no newly restructured and renewals or modifications of existing TDR loans by class that occurred during the three months ended September 30, 2017 , by type of concession granted. The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the nine months ended September 30, 2017 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 3 $ 95 $ 89 $ 244 $ 428 Commercial real estate 1 — — 134 134 4 95 89 378 562 Post-modification outstanding recorded investment One- to four-family 3 $ 92 $ 87 $ 237 $ 416 Commercial real estate 1 — — 129 129 4 $ 92 $ 87 $ 366 $ 545 The following is a summary of TDR loans which incurred a payment default within 12 months of the restructure date during the three and nine months ended September 30, 2017 . Number of Contracts Rate Modification Term Modification Combination Total Modifications (Dollars in thousands) TDR loans that subsequently defaulted One- to four-family 1 $ — $ 87 $ — $ 87 No additional funds were committed to be advanced in connection with impaired loans at September 30, 2018 . The following table presents TDR loans by class at the dates indicated by accrual and nonaccrual status. September 30, 2018 December 31, 2017 Accrual Nonaccrual Total Accrual Nonaccrual Total (In thousands) One-to-four family $ 2,503 $ 84 $ 2,587 $ 3,165 $ 176 $ 3,341 Multi-family 112 — 112 115 — 115 Commercial real estate 672 — 672 693 217 910 Home equity 261 — 261 270 — 270 Commercial business 275 — 275 283 — 283 Total TDR loans $ 3,823 $ 84 $ 3,907 $ 4,526 $ 393 $ 4,919

Deposits

Deposits	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Deposits	Deposits The aggregate amount of time deposits in excess of the Federal Deposit Insurance Corporation ("FDIC") insured limit, currently $250,000 , at September 30, 2018 and December 31, 2017 , was $101.7 million and $82.3 million , respectively. Deposits and weighted-average interest rates at the dates indicated are as follows: September 30, 2018 December 31, 2017 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate (Dollars in thousands) Savings $ 125,418 0.52% $ 103,243 0.05% Transaction accounts 269,211 0.05% 272,484 0.01% Money market accounts 285,820 0.43% 270,052 0.33% Certificates of deposit and jumbo certificates 251,156 1.70% 239,253 1.27% $ 931,605 0.68% $ 885,032 0.45% Maturities of certificates at the dates indicated are as follows: September 30, 2018 December 31, 2017 (In thousands) Within one year or less $ 153,915 $ 139,613 After one year through two years 61,274 61,906 After two years through three years 23,338 20,732 After three years through four years 7,868 10,089 After four years through five years 4,756 6,886 After five years 5 27 $ 251,156 $ 239,253 Deposits at September 30, 2018 and December 31, 2017 , included $87.6 million and $56.2 million , respectively, in public fund deposits. Investment securities with a carrying value of $54.7 million and $41.0 million were pledged as collateral for these deposits at September 30, 2018 and December 31, 2017 , respectively. This exceeds the minimum collateral requirements established by the Washington Public Deposit Protection Commission. Interest on deposits by type for the periods shown was as follows: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 (In thousands) Savings $ 104 $ 15 $ 148 $ 38 Transaction accounts 25 4 38 13 Insured money market accounts 317 206 814 644 Certificates of deposit and jumbo certificates 1,052 686 2,608 1,732 $ 1,498 $ 911 $ 3,608 $ 2,427

Federal Taxes on Income

Federal Taxes on Income	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Federal Taxes on Income	Federal Taxes on Income Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. These calculations are based on many complex factors including estimates of the timing of reversals of temporary differences, the interpretation of federal income tax laws, and a determination of the differences between the tax and the financial reporting basis of assets and liabilities. Actual results could differ significantly from the estimates and interpretations used in determining the current and deferred income tax assets and liabilities. Under current Federal income tax regulations, charitable contribution deductions are limited to 10% of taxable income. Due to this limitation, the Company currently has a valuation allowance of $1.2 million for financial statement reporting purposes related to its contribution to the Foundation. The contribution carryforward and related valuation allowance will expire in 2020. A valuation allowance is provided when it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company evaluates whether its deferred tax assets will be realized and adjusts the amount of its valuation allowance, if necessary. Effective January 1, 2018, the corporate U.S. statutory federal income tax rate was reduced from 35% to 21% under the Tax Cuts and Jobs Act. The Company completed its accounting under ASC 740 in December 2017 for all material deferred tax assets and liabilities with provisional amounts recorded for immaterial items. No adjustments were made to provisional amounts during the nine months ended September 30, 2018 , and none are anticipated during the one year SEC Staff Accounting Bulletin 118 measurement period. The effective tax rates were 18.6% and 21.6% for the nine months ended September 30, 2018 and 2017 , respectively. The effective tax rates differ from the statutory maximum federal tax rate for 2018 and 2017 of 21% and 35%, respectively, largely due to the nontaxable earnings on bank owned life insurance and tax-exempt interest income earned on certain investment securities and loans.

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per share is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. In addition, nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are considered participating securities and are included in the computation of earnings per share. The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the three and nine months ended September 30, 2018 and 2017 . Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 (In thousands, except share data) Numerator: Net income $ 1,926 $ 1,773 $ 4,975 $ 5,052 Denominator: Basic weighted average common shares outstanding 10,324,048 10,631,508 10,447,231 10,731,555 Dilutive restricted stock grants 72,640 70,753 48,884 72,876 Diluted weighted average common shares outstanding 10,396,688 10,702,261 10,496,115 10,804,431 Basic earnings per share $ 0.19 $ 0.17 $ 0.48 $ 0.47 Diluted earnings per share $ 0.19 $ 0.17 $ 0.47 $ 0.47 Unallocated ESOP shares are not included as outstanding for either basic or diluted earnings per share calculations. As of September 30, 2018 and 2017 , there were 860,224 and 913,113 shares in the ESOP that remain unallocated, respectively. Potential dilutive shares are excluded from the computation of EPS if their effect is anti-dilutive. Restricted stock award anti-dilutive shares of 916 and 2,718 at September 30, 2018 and 2017 , respectively, were not included in the computation of diluted EPS.

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Benefits	Employee Benefits Employee Stock Ownership Plan In connection with the Conversion, the Company established an ESOP for eligible employees of the Company and the Bank. Employees of the Company and the Bank who have been credited with at least 1,000 hours of service during a 12 -month period are eligible to participate in the ESOP. Pursuant to the Plan, the ESOP purchased shares in the open market with funds borrowed from First Northwest. The Bank will make contributions to the ESOP in amounts necessary to amortize the ESOP loan payable to First Northwest over a period of 20 years, bearing estimated interest at 2.46% . The loan is secured by shares purchased with the loan proceeds and will be repaid by the ESOP with funds from the Bank's discretionary contributions to the ESOP and earnings on the ESOP assets. An annual principal and interest payment of $835,000 was made by the ESOP during the nine months ended September 30, 2018 . As shares are committed to be released from collateral, the Company reports compensation expense equal to the average daily market prices of the shares and the shares become outstanding for EPS computations. The compensation expense is accrued monthly throughout the year. Dividends on allocated ESOP shares are recorded as a reduction of retained earnings; dividends on unallocated ESOP shares are recorded as a reduction of debt and accrued interest. Compensation expense related to the ESOP for the three months ended September 30, 2018 and 2017 , was $214,000 and $210,000 , respectively. For the nine months ended September 30, 2018 and 2017 compensation expense related to the ESOP was $651,000 and $605,000 , respectively. Shares issued to the ESOP as of the dates indicated are as follows: September 30, 2018 December 31, 2017 (Dollars in thousands, except share data) Allocated shares 174,584 121,695 Committed to be released shares 13,221 26,442 Unallocated shares 860,224 899,892 Total ESOP shares issued 1,048,029 1,048,029 Fair value of unallocated shares $ 13,247 $ 14,668 Stock-based Compensation On November 16, 2015 , the Company's shareholders approved the First Northwest Bancorp 2015 Equity Incentive Plan (the "2015 EIP"), which provides for the grant of incentive stock options, non-qualified stock options, restricted stock and restricted stock units to eligible participants. The cost of awards under the 2015 EIP generally is based on the fair value of the awards on their grant date. The maximum number of shares that may be utilized for awards under the 2015 EIP is 1,834,050 . The 2015 EIP provides for the use of authorized but unissued shares or shares that have been reacquired by First Northwest to fund share-based awards. At September 30, 2018 , there were 1,361,550 total shares available for grant under the 2015 EIP, including 117,014 shares available to be granted as restricted stock. During the three and nine months ended September 30, 2018 , 20,000 shares of restricted stock were awarded and no stock options were granted. There were 50,000 shares of restricted stock awarded during the three and nine months ended September 30, 2017 . Awarded shares of restricted stock vest over five years from the date of grant as long as the eligible participant remains in service to the Company. The Company recognizes compensation expense for the restricted stock awards based on the fair value of the shares at the award date. For the three months ended September 30, 2018 and 2017 , total compensation expense for the 2015 EIP was $256,000 and $321,000 , respectively. For the nine months ended September 30, 2018 and 2017 , total compensation expense for the 2015 EIP was $788,000 and $788,000 , respectively. Included in the above compensation expense for the three months ended September 30, 2018 and 2017 , was directors' compensation of $86,000 and $98,000 , respectively. For the nine months ended September 30, 2018 and 2017 , directors' compensation was $256,000 and $292,000 , respectively. The following tables provide a summary of changes in non-vested restricted stock awards for the periods shown: For the Three Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at July 1, 2018 342,600 $ 13.14 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (33,600 ) 12.70 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue. For the Nine Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at January 1, 2018 347,600 $ 13.18 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (38,600 ) 13.14 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue. As of September 30, 2018 , there was $3.1 million of total unrecognized compensation cost related to non-vested shares granted as restricted stock awards. The cost is expected to be recognized over the remaining weighted-average vesting period of approximately 3.14 years.

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation	Employee Benefits Employee Stock Ownership Plan In connection with the Conversion, the Company established an ESOP for eligible employees of the Company and the Bank. Employees of the Company and the Bank who have been credited with at least 1,000 hours of service during a 12 -month period are eligible to participate in the ESOP. Pursuant to the Plan, the ESOP purchased shares in the open market with funds borrowed from First Northwest. The Bank will make contributions to the ESOP in amounts necessary to amortize the ESOP loan payable to First Northwest over a period of 20 years, bearing estimated interest at 2.46% . The loan is secured by shares purchased with the loan proceeds and will be repaid by the ESOP with funds from the Bank's discretionary contributions to the ESOP and earnings on the ESOP assets. An annual principal and interest payment of $835,000 was made by the ESOP during the nine months ended September 30, 2018 . As shares are committed to be released from collateral, the Company reports compensation expense equal to the average daily market prices of the shares and the shares become outstanding for EPS computations. The compensation expense is accrued monthly throughout the year. Dividends on allocated ESOP shares are recorded as a reduction of retained earnings; dividends on unallocated ESOP shares are recorded as a reduction of debt and accrued interest. Compensation expense related to the ESOP for the three months ended September 30, 2018 and 2017 , was $214,000 and $210,000 , respectively. For the nine months ended September 30, 2018 and 2017 compensation expense related to the ESOP was $651,000 and $605,000 , respectively. Shares issued to the ESOP as of the dates indicated are as follows: September 30, 2018 December 31, 2017 (Dollars in thousands, except share data) Allocated shares 174,584 121,695 Committed to be released shares 13,221 26,442 Unallocated shares 860,224 899,892 Total ESOP shares issued 1,048,029 1,048,029 Fair value of unallocated shares $ 13,247 $ 14,668 Stock-based Compensation On November 16, 2015 , the Company's shareholders approved the First Northwest Bancorp 2015 Equity Incentive Plan (the "2015 EIP"), which provides for the grant of incentive stock options, non-qualified stock options, restricted stock and restricted stock units to eligible participants. The cost of awards under the 2015 EIP generally is based on the fair value of the awards on their grant date. The maximum number of shares that may be utilized for awards under the 2015 EIP is 1,834,050 . The 2015 EIP provides for the use of authorized but unissued shares or shares that have been reacquired by First Northwest to fund share-based awards. At September 30, 2018 , there were 1,361,550 total shares available for grant under the 2015 EIP, including 117,014 shares available to be granted as restricted stock. During the three and nine months ended September 30, 2018 , 20,000 shares of restricted stock were awarded and no stock options were granted. There were 50,000 shares of restricted stock awarded during the three and nine months ended September 30, 2017 . Awarded shares of restricted stock vest over five years from the date of grant as long as the eligible participant remains in service to the Company. The Company recognizes compensation expense for the restricted stock awards based on the fair value of the shares at the award date. For the three months ended September 30, 2018 and 2017 , total compensation expense for the 2015 EIP was $256,000 and $321,000 , respectively. For the nine months ended September 30, 2018 and 2017 , total compensation expense for the 2015 EIP was $788,000 and $788,000 , respectively. Included in the above compensation expense for the three months ended September 30, 2018 and 2017 , was directors' compensation of $86,000 and $98,000 , respectively. For the nine months ended September 30, 2018 and 2017 , directors' compensation was $256,000 and $292,000 , respectively. The following tables provide a summary of changes in non-vested restricted stock awards for the periods shown: For the Three Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at July 1, 2018 342,600 $ 13.14 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (33,600 ) 12.70 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue. For the Nine Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at January 1, 2018 347,600 $ 13.18 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (38,600 ) 13.14 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue. As of September 30, 2018 , there was $3.1 million of total unrecognized compensation cost related to non-vested shares granted as restricted stock awards. The cost is expected to be recognized over the remaining weighted-average vesting period of approximately 3.14 years.

Fair Value Accounting and Measu

Fair Value Accounting and Measurement	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Accounting and Measurement	Fair Value Accounting and Measurement Fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants in the Company’s principal market. The Company has established and documented its process for determining the fair values of its assets and liabilities, where applicable. Fair value is based on quoted market prices, when available, for identical or similar assets or liabilities. In the absence of quoted market prices, management determines the fair value of the Company’s assets and liabilities using valuation models or third-party pricing services, both of which rely on market-based parameters when available, such as interest rate yield curves, option volatilities and credit spreads, or unobservable inputs. Unobservable inputs may be based on management’s judgment, assumptions, and estimates related to credit quality, liquidity, interest rates, and other relevant inputs. Any changes to valuation methodologies are reviewed by management to ensure they are relevant and justified. Valuation methodologies are refined as more market-based data becomes available. A three-level valuation hierarchy is used in determining fair value that is based on the transparency of the inputs used in the valuation process. The inputs used in determining fair value in each of the three levels of the hierarchy are as follows: Level 1 - Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 - Either: (i) quoted prices for similar assets or liabilities; (ii) observable inputs, such as interest rates or yield curves; or (iii) inputs derived principally from or corroborated by observable market data. Level 3 - Unobservable inputs. The hierarchy gives the highest ranking to Level 1 inputs and the lowest ranking to Level 3 inputs. The level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the overall fair value measurement. Qualitative disclosures of valuation techniques - Securities available for sale: where quoted prices are available in an active market, securities are classified as Level 1. Level 1 instruments include highly liquid government bonds, securities issued by the U.S. Treasury, and exchange-traded equity securities. If quoted prices are not available, management determines fair value using pricing models, quoted prices of similar securities, which are considered Level 2, or discounted cash flows. In certain cases, where there is limited activity in the market for a particular instrument, assumptions must be made to determine their fair value. Such instruments are classified as Level 3. Assets and liabilities measured at fair value on a recurring basis - Assets and liabilities are considered to be fair valued on a recurring basis if fair value is measured regularly (i.e., daily, weekly, monthly, or quarterly). The following tables show the Company’s assets measured at fair value on a recurring basis at the dates indicated: September 30, 2018 Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Total (In thousands) Securities available-for-sale Municipal bonds $ — $ 859 $ — $ 859 ABS agency — 25,992 — 25,992 ABS corporate — 37,468 — 37,468 Corporate debt — 9,826 — 9,826 SBA — 36,775 — 36,775 MBS agency — 145,162 — 145,162 MBS corporate — 11,023 — 11,023 $ — $ 267,105 $ — $ 267,105 December 31, 2017 Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Total (In thousands) Securities available-for-sale Municipal bonds $ — $ 13,434 $ — $ 13,434 ABS agency — 21,770 — 21,770 ABS corporate — 22,768 — 22,768 Corporate debt — 19,908 — 19,908 SBA — 47,274 — 47,274 MBS agency — 144,542 — 144,542 MBS corporate — 20,546 — 20,546 $ — $ 290,242 $ — $ 290,242 Assets and liabilities measured at fair value on a nonrecurring basis - Assets are considered to be fair valued on a nonrecurring basis if the fair value measurement of the instrument does not necessarily result in a change in the amount recorded on the consolidated balance sheets. Generally, nonrecurring valuation is the result of the application of other accounting pronouncements that require assets or liabilities to be assessed for impairment or recorded at the lower of cost or fair value. The following tables present the Company’s assets measured at fair value on a nonrecurring basis at the dates indicated: September 30, 2018 Level 1 Level 2 Level 3 Total (In thousands) Impaired loans $ — $ — $ 7,594 $ 7,594 December 31, 2017 Level 1 Level 2 Level 3 Total (In thousands) Impaired loans $ — $ — $ 6,061 $ 6,061 At September 30, 2018 and December 31, 2017 , there were no impaired loans with discounts to appraisal disposition value or other unobservable inputs. The following tables present the carrying value and estimated fair value of financial instruments at the dates indicated: September 30, 2018 Carrying Amount Estimated Fair Value Fair Value Measurements Using: Level 1 Level 2 Level 3 (In thousands) Financial assets Cash and cash equivalents $ 25,334 $ 25,334 $ 25,334 $ — $ — Investment securities available for sale 267,105 267,105 — 267,105 — Investment securities held to maturity 43,908 42,864 — 42,864 — Loans receivable, net 839,458 812,418 — — 812,418 FHLB stock 6,326 6,326 — 6,326 — Accrued interest receivable 3,914 3,914 — 3,914 — Mortgage servicing rights, net 1,074 1,532 — — 1,532 Financial liabilities Demand deposits $ 680,449 $ 680,449 $ 680,449 $ — $ — Time deposits 251,156 248,645 — 248,645 — Borrowings 121,526 122,085 — 122,085 — Accrued interest payable 360 360 — 360 — December 31, 2017 Carrying Amount Estimated Fair Value Fair Value Measurements Using: Level 1 Level 2 Level 3 (In thousands) Financial assets Cash and cash equivalents $ 36,801 $ 36,801 $ 36,801 $ — $ — Investment securities available for sale 290,242 290,242 — 290,242 — Investment securities held to maturity 50,126 50,266 — 50,266 — Loans held for sale 788 788 — 788 — Loans receivable, net 779,111 768,181 — — 768,181 FHLB stock 7,023 7,023 — 7,023 — Accrued interest receivable 3,745 3,745 — 3,745 — Mortgage servicing rights, net 1,095 1,669 — — 1,669 Financial liabilities Demand deposits $ 645,779 $ 645,779 $ 645,779 $ — $ — Time deposits 239,253 237,841 — 237,841 — Borrowings 144,100 145,892 — 145,892 — Accrued interest payable 325 325 — 325 — Financial assets and liabilities other than investment securities are not traded in active markets. Estimated fair values require subjective judgments and are approximate. The estimates of fair value in the previous table are not necessarily representative of amounts that could be realized in actual market transactions, or of the underlying value of the Company. The methods and assumptions used by the Company in estimating fair values of financial instruments as set forth below in accordance with ASC Topic 825, Financial Instruments , as amended by ASU 2016-01 requiring public entities to use the exit price notion effective January 1, 2018, are as follows: Financial instruments with a carrying amount 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 the carrying amount. These instruments include cash and due from banks, interest bearing 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 carrying amount. Securities - Fair values for investment securities are primarily measured using information from a third-party pricing service. The pricing service uses pricing models based on market data. In the event that limited or less transparent information is provided by the third-party pricing service, fair value is estimated using secondary pricing services or non-binding third-party broker quotes. Loans held for sale - The fair value of loans held for sale is based on quoted market prices from Federal Home Loan Mortgage Corporation ("Freddie Mac"), which are updated daily and represent prices at which loans are exchanged in high volumes and in a liquid market. Loans receivable, net - At September 30, 2018 , the fair value of loans and leases is estimated by discounting the future cash flows using the current rate at which similar loans and leases would be made to borrowers with similar credit and for the same remaining maturities. Additionally, to be consistent with the requirements under FASB ASC Topic 820 for Fair Value Measurements and Disclosures, the loans and leases were valued at a price that represents the Company’s exit price or the price at which these instruments would be sold or transferred. At December 31, 2017, fair values were estimated for portfolios of loans with similar financial characteristics. Loans were segregated by type, including fixed and variable one- to four-family residential real estate, commercial, and consumer loans. There is an accurate and reliable secondary market for one- to four-family residential mortgage production, and available market benchmarks are used to establish discount factors for estimating fair value for these types of loans. Commercial and consumer loans use market benchmarks when available; however, due to the varied term structures and credit issues involved, they mainly rely on cash flow projections and repricing characteristics within the loan portfolio. These amounts are discounted further by embedded probable losses expected to be realized in the portfolio. Mortgage servicing rights, net - The estimated fair value of mortgage servicing rights is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. Deposits - The fair value of deposits with no stated maturity, such as non-interest bearing deposits, savings and interest checking accounts, and money market accounts, is equal to the amount payable on demand as of September 30, 2018 and December 31, 2017 . The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. Borrowings - The fair value of FHLB advances and other borrowings are calculated using a discounted cash flow method, adjusted for market interest rates and terms to maturity. Off-balance-sheet financial instruments - Commitments to extend credit represent all off-balance-sheet financial instruments. The fair value of these commitments is not significant.

Noninterest Income

Noninterest Income	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Noninterest Income	Noninterest Income On January 1, 2018, the Company adopted the amendments of ASU 2014-09 Revenue from Contracts with Customers (Topic 606) and all subsequent ASUs that modified Topic 606. The Company has included the following table regarding the Company’s noninterest income for the periods presented. Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Noninterest income: Loan fees (1) $ 223 $ 174 $ 480 $ 344 Deposit fees 433 399 1,194 1,219 Debit interchange income 33 39 102 117 Credit card interchange income 456 415 1,309 1,169 Investment securities gain (loss), net (1) (58 ) 136 77 136 Gain on loan sales, net (1) 139 377 456 705 Increase in cash surrender value of BOLI (1) 150 158 448 495 Income from BOLI payout (1) — — — 768 Other income: Investment services revenue 20 43 177 221 Gain or loss on subsidiary (1) 18 (91 ) 50 (131 ) Remaining other income 6 48 14 55 Total other income 44 — 241 145 Total noninterest income $ 1,420 $ 1,698 $ 4,307 $ 5,098 (1) Not within scope of Topic 606 The Company recognizes revenue as it is earned and noted no impact to its revenue recognition policies as a result of the adoption of ASU 2014-09. The following is a discussion of key revenues within the scope of the new revenue guidance. Deposit fees - The Company earns fees from its deposit customers for account maintenance, transaction-based activity and overdraft services. Account maintenance fees consist primarily of account fees and analyzed account fees charged on deposit accounts on a monthly basis. The performance obligation is satisfied and the fees are recognized on a monthly basis as the service period is completed. Transaction-based fees on deposit accounts are charged to deposit customers for specific services provided to the customer, such as non-sufficient funds fees, overdraft fees, and wire fees. The performance obligation is completed as the transaction occurs and the fees are recognized at the time each specific service is provided to the customer. Debit interchange income - Debit and Automated Teller Machine ("ATM") interchange income represent fees earned when a debit card issued by the Company is used. The Company earns interchange fees from debit cardholder transactions through card networks. In addition, the Company earns interchange fees for use of its ATM by customers of other banking institutions. Interchange fees are based on purchase volumes and other factors and are recognized as transactions occur. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the cardholder's debit card. Certain expenses directly associated with the credit and debit card are netted against interchange income. Credit card interchange income - Credit card interchange income represents fees earned when a credit card issued by the Bank through a third-party vendor is used. Similar to the debit card interchange, the Bank earns an interchange fee for each transaction made with a Bank-branded credit card. The performance obligation is satisfied and the fees are earned when the cost of the transaction is charged to the cardholder's credit card. Certain expenses directly related to the credit card interchange contract are netted against interchange income. Investment services revenue - Commissions received on the sale of investment related products is determined by a percentage of underlying instruments sold and is recognized when the sale is finalized. Gains/losses on the sale of other real estate owned are included in non-interest expense and are generally recognized when the performance obligation is complete. This is typically at delivery of control over the property to the buyer at time of each real estate closing.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On October 24, 2018, the Company declared a quarterly cash dividend of $0.03 per common share, payable December 14, 2018 to shareholders of record at the close of business November 30, 2018.

Basis of Presentation and Cri_2

Basis of Presentation and Critical Accounting Policies (Policies)	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 our audited consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-KT for the six months ended December 31, 2017 . In our opinion, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation of the consolidated financial statements in accordance with GAAP have been included. The Company changed its fiscal year from June 30 to December 31 effective December 31, 2017. Operating results for the three and nine months ended September 30, 2018 , are not necessarily indicative of the results that may be expected for future periods. In preparing the unaudited interim 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 in the near term relate to a determination of the allowance for loan losses ("ALLL"), mortgage servicing rights, fair value of financial instruments, deferred tax assets and liabilities, and the valuation of impaired loans.
Principles of Consolidation	Principles of consolidation - The accompanying consolidated financial statements include the accounts of First Northwest Bancorp and its wholly owned subsidiary, First Federal. All material intercompany accounts and transactions have been eliminated in consolidation.
Subsequent Events	Subsequent Events - The Company has evaluated subsequent events for potential recognition and disclosure and determined there are no such events or transactions requiring recognition or disclosure.
Recently Adopted and Issued Accounting Pronouncements	Recently adopted accounting pronouncements - 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): Deferral of the Effective Date , 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. In general, the new guidance requires companies to use more judgment and make more estimates than under current guidance, including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. These standards were effective for interim and annual periods beginning after December 15, 2017. The Company has analyzed its revenue 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 as the Company did not identify any significant changes in the timing of revenue recognition when considering the amended accounting guidance since it is consistent with the Company’s current accounting policy for contracts. In January 2016, the 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 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 used the exit price notion in the fair value disclosure of financial instruments in Note 9 of this report. The adoption of ASU 2016-01 did not have a material impact on the Company’s consolidated financial statements or disclosures in the Notes to the Consolidated Financial Statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . The ASU provides specific guidance on eight classification issues in order to achieve more consistent reporting. 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 March 2017, the 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 using the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019. Early adoption is permitted. The adoption of ASU 2017-08 did not have a material impact on the Company's consolidated financial statements. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting . This ASU provides clarity on the guidance related to stock compensation when there have been changes to the terms or conditions of a share-based payment award to which an entity would be required to apply modification accounting under ASC 718. The ASU provides the three following criteria must be met in order to not account for the effect of the modification of terms or conditions: the fair value, the vesting conditions and the classification as an equity or liability instrument of the modified award is the same as the original award immediately before the original award is modified. The amendments in this ASU were effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. The Company has not had any modifications on share-based payment awards and therefore the adoption of ASU 2017-09 did not have a material impact on the Company’s consolidated financial statements. 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 Cuts and Jobs 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 on Form 10-KT as of December 31, 2017. As of September 30, 2018 , the Company did not incur any adjustments to the provisional recognition. Recently issued accounting pronouncements Lease Accounting In February 2016, the FASB issued ASU No. 2016-02, Leases . ASU 2016-02 is intended to increase transparency and comparability among organizations by requiring the recognition of lease assets and lease liabilities on the balance sheet and disclosure of key information about leasing arrangements. The principal change required by this ASU relates to lessee accounting, and is that for operating leases, a lessee is required to (1) recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position, (2) recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a generally straight-line basis, and (3) classify all cash payments within operating activities in the statement of cash flows. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. If a lessee makes this election, it should recognize lease expense for such leases generally on a straight-line basis over the lease term. ASU 2016-02 also changes disclosure requirements related to leasing activities, and requires certain qualitative disclosures along with specific quantitative disclosures. The amendments in ASU 2016-02 are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. Early application of the amendments in ASU 2016-02 is permitted. Once adopted, we expect to report higher assets and liabilities on our Consolidated Balance Sheets as a result of including right-of-use assets and lease liabilities related to certain banking offices and certain equipment under noncancelable operating lease agreements, which currently are not reflected in our Consolidated Balance Sheets. We do not expect the guidance to have a material impact on the Consolidated Statements of Income or Consolidated Statements of Changes in Shareholders' Equity. ASU 2016-02 initially provided for one retrospective transition method; however a second transition method was later added with ASU 2018-11 which permits companies to utilize certain practical expedients. In July 2018, FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases . These amendments provide minor clarifications and corrections to ASU 2016-02, Leases (Topic 842) . In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements . The amendments in this ASU provide entities with an additional optional transition method to adopt ASU 2016-02. Under this new transition method, an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. Consequently, an entity’s reporting under this additional transition method for the comparative periods presented in the financial statements in which it adopts the new leases standard would continue to be in accordance with current GAAP (Topic 840, Leases ). The Company will adopt ASU 2016-02 (as amended by subsequent ASUs) effective January 1, 2019 utilizing the new transition method described in ASU 2018-11 and will avail itself of practical expedients. As a lessee, the Company is party to several office leases with future payment obligations including all available extensions aggregating approximately $9 million at September 30, 2018 for which the Company expects to record right-of-use assets and lease liabilities at the present value of the remaining minimum rental payments upon adoption of ASU 2016-02. As lessee, the Company expects to apply the following practical expedients in the implementation ASU 2016-02: (i) to not separate non-lease components from the associated lease component as described above and (ii) to not apply the right-of-use recognition requirements to short-term leases. Other Accounting Topics In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Loss , which updates the guidance on recognition and measurement of credit losses for financial assets. The new requirements, known as the current expected credit loss model (CECL) will require entities to adopt an impairment model based on expected losses rather than incurred losses. ASU No. 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Upon adoption, the Company will change processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the current accounting policy and procedures for other-than-temporary impairment on investment securities available for sale will be replaced with an allowance approach. At this time, we do not anticipate an increase to the ALLL as a result of the implementation of this ASU based on the preliminary review and testing of different models being evaluated. The Company has formed an internal project management team which will coordinate and monitor implementation progress, work with our third-party vendor, and implement changes to processes and procedures to ensure the Company is fully compliant with the amendments at the adoption date. 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. Adoption of ASU 2017-12 is not expected to have a material impact on the Company’s consolidated financial statements. In June 2018, FASB issued ASU No. 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting . These amendments provide specific guidance for transactions for acquiring goods and services from nonemployees and specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards. The amendments also clarify that Topic 718 does not apply to share-based payments used to effectively provide (i) financing to the issuer or (ii) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers . This guidance is effective for fiscal years beginning after December 15, 2018, and interim periods beginning after December 15, 2020. Early adoption is permitted but not earlier than the adoption of Topic 606. The Company does not believe that this guidance will have a material effect on its consolidated financial statements as it has not historically issued share-based payments in exchange for goods or services to be consumed within its operations. In July 2018, FASB issued ASU No. 2018-09, Codification Improvements . These amendments provide clarifications and corrections to certain ASC subtopics including the following: 220-10 (Income Statement - Reporting Comprehensive Income - Overall), 470-50 (Debt - Modifications and Extinguishments), 480-10 (Distinguishing Liabilities from Equity - Overall), 718-740 (Compensation - Stock Compensation - Income Taxes), 805-740 (Business Combinations - Income Taxes), 815-10 (Derivatives and Hedging - Overall), and 820-10 (Fair Value Measurement - Overall). Some of the amendments in ASU 2018-09 do not require transition guidance and will be effective upon issuance; however, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2018. The Company is currently assessing the impact this guidance will have on its consolidated financial statements. In August 2018, FASB issued ASU No. 2018-13, Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement which removes, modifies, and adds certain disclosure requirements related to fair value measurements in ASC 820. This guidance is effective for public companies in fiscal years beginning after December 15, 2019 with early adoption permitted. The Company is currently assessing the impact this guidance will have on its consolidated financial statements. In August 2018, FASB issued ASU No. 2018-15 Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract to provide guidance on implementation costs incurred in a cloud computing arrangement that is a service contract. The ASU aligns the accounting for such costs with the guidance on capitalizing costs associated with developing or obtaining internal-use software. Specifically, the ASU amends ASC 350 to include in its scope implementation costs of such arrangements that are service contracts and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized. This ASU, which is effective for fiscal years beginning after December 15, 2019, is not expected to have a material impact on the Company’s financial statements. In August 2018, the Securities and Exchange Commission issued a final rule that amends certain of its disclosure requirements. The rule simplifies various disclosure requirements for public companies including primarily that it (i) eliminates the requirement for public companies to disclose in their filings a schedule of earnings to fixed charges, (ii) requires an analysis of changes in stockholders’ equity for the current and comparative year-to-date interim periods in interim reports, and (iii) reduces the requirements for market price information disclosures in annual reports. These changes are effective for public companies beginning on November 5, 2018. The Company anticipates complying with these new requirements beginning with its 2018 Annual Report on Form 10-K.
Reclassifications	Reclassifications - 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 net income or shareholders' equity.
Earnings per Share	Basic earnings per share is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. In addition, nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents are considered participating securities and are included in the computation of earnings per share.
Fair Value Accounting and Measurement	Fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants in the Company’s principal market. The Company has established and documented its process for determining the fair values of its assets and liabilities, where applicable. Fair value is based on quoted market prices, when available, for identical or similar assets or liabilities. In the absence of quoted market prices, management determines the fair value of the Company’s assets and liabilities using valuation models or third-party pricing services, both of which rely on market-based parameters when available, such as interest rate yield curves, option volatilities and credit spreads, or unobservable inputs. Unobservable inputs may be based on management’s judgment, assumptions, and estimates related to credit quality, liquidity, interest rates, and other relevant inputs. Any changes to valuation methodologies are reviewed by management to ensure they are relevant and justified. Valuation methodologies are refined as more market-based data becomes available. A three-level valuation hierarchy is used in determining fair value that is based on the transparency of the inputs used in the valuation process. The inputs used in determining fair value in each of the three levels of the hierarchy are as follows: Level 1 - Quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 - Either: (i) quoted prices for similar assets or liabilities; (ii) observable inputs, such as interest rates or yield curves; or (iii) inputs derived principally from or corroborated by observable market data. Level 3 - Unobservable inputs. The hierarchy gives the highest ranking to Level 1 inputs and the lowest ranking to Level 3 inputs. The level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the overall fair value measurement. Qualitative disclosures of valuation techniques - Securities available for sale: where quoted prices are available in an active market, securities are classified as Level 1. Level 1 instruments include highly liquid government bonds, securities issued by the U.S. Treasury, and exchange-traded equity securities. If quoted prices are not available, management determines fair value using pricing models, quoted prices of similar securities, which are considered Level 2, or discounted cash flows. In certain cases, where there is limited activity in the market for a particular instrument, assumptions must be made to determine their fair value. Such instruments are classified as Level 3. Assets and liabilities measured at fair value on a recurring basis - Assets and liabilities are considered to be fair valued on a recurring basis if fair value is measured regularly (i.e., daily, weekly, monthly, or quarterly).
Fair Value of Financial Instruments	Financial assets and liabilities other than investment securities are not traded in active markets. Estimated fair values require subjective judgments and are approximate. The estimates of fair value in the previous table are not necessarily representative of amounts that could be realized in actual market transactions, or of the underlying value of the Company. The methods and assumptions used by the Company in estimating fair values of financial instruments as set forth below in accordance with ASC Topic 825, Financial Instruments , as amended by ASU 2016-01 requiring public entities to use the exit price notion effective January 1, 2018, are as follows: Financial instruments with a carrying amount 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 the carrying amount. These instruments include cash and due from banks, interest bearing 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 carrying amount. Securities - Fair values for investment securities are primarily measured using information from a third-party pricing service. The pricing service uses pricing models based on market data. In the event that limited or less transparent information is provided by the third-party pricing service, fair value is estimated using secondary pricing services or non-binding third-party broker quotes. Loans held for sale - The fair value of loans held for sale is based on quoted market prices from Federal Home Loan Mortgage Corporation ("Freddie Mac"), which are updated daily and represent prices at which loans are exchanged in high volumes and in a liquid market. Loans receivable, net - At September 30, 2018 , the fair value of loans and leases is estimated by discounting the future cash flows using the current rate at which similar loans and leases would be made to borrowers with similar credit and for the same remaining maturities. Additionally, to be consistent with the requirements under FASB ASC Topic 820 for Fair Value Measurements and Disclosures, the loans and leases were valued at a price that represents the Company’s exit price or the price at which these instruments would be sold or transferred. At December 31, 2017, fair values were estimated for portfolios of loans with similar financial characteristics. Loans were segregated by type, including fixed and variable one- to four-family residential real estate, commercial, and consumer loans. There is an accurate and reliable secondary market for one- to four-family residential mortgage production, and available market benchmarks are used to establish discount factors for estimating fair value for these types of loans. Commercial and consumer loans use market benchmarks when available; however, due to the varied term structures and credit issues involved, they mainly rely on cash flow projections and repricing characteristics within the loan portfolio. These amounts are discounted further by embedded probable losses expected to be realized in the portfolio. Mortgage servicing rights, net - The estimated fair value of mortgage servicing rights is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. Deposits - The fair value of deposits with no stated maturity, such as non-interest bearing deposits, savings and interest checking accounts, and money market accounts, is equal to the amount payable on demand as of September 30, 2018 and December 31, 2017 . The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. Borrowings - The fair value of FHLB advances and other borrowings are calculated using a discounted cash flow method, adjusted for market interest rates and terms to maturity. Off-balance-sheet financial instruments - Commitments to extend credit represent all off-balance-sheet financial instruments. The fair value of these commitments is not significant.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value of Securities	The amortized cost, gross unrealized gains and losses, and estimated fair value of securities classified as available-for-sale and held-to-maturity at September 30, 2018 , are summarized as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In thousands) Available for Sale Municipal bonds $ 882 $ — $ (23 ) $ 859 U.S. government agency issued asset-backed securities (ABS agency) 26,182 61 (251 ) 25,992 Corporate issued asset-backed securities (ABS corporate) 37,904 — (436 ) 37,468 Corporate issued debt securities (Corporate debt) 9,986 106 (266 ) 9,826 U.S. Small Business Administration securities (SBA) 37,339 4 (568 ) 36,775 Mortgage-backed securities: U.S. government agency issued mortgage-backed securities (MBS agency) 150,986 — (5,824 ) 145,162 Corporate issued mortgage-backed securities (MBS corporate) 11,331 — (308 ) 11,023 Total securities available for sale $ 274,610 $ 171 $ (7,676 ) $ 267,105 Held to Maturity Municipal bonds $ 11,987 $ 44 $ (9 ) $ 12,022 SBA 343 — (2 ) 341 Mortgage-backed securities: MBS agency 31,578 — (1,077 ) 30,501 Total securities held to maturity $ 43,908 $ 44 $ (1,088 ) $ 42,864 The amortized cost, gross unrealized gains and losses, and estimated fair value of securities classified as available-for-sale and held-to-maturity at December 31, 2017 , are summarized as follows: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In thousands) Available for Sale Municipal bonds $ 13,058 $ 391 $ (15 ) $ 13,434 ABS agency 21,972 36 (238 ) 21,770 ABS corporate 22,823 — (55 ) 22,768 Corporate debt 19,835 195 (122 ) 19,908 SBA 47,325 98 (149 ) 47,274 Mortgage-backed securities: MBS agency 146,532 36 (2,026 ) 144,542 MBS corporate 20,721 18 (193 ) 20,546 Total securities available for sale $ 292,266 $ 774 $ (2,798 ) $ 290,242 Held to Maturity Municipal bonds $ 13,963 $ 156 $ — $ 14,119 SBA 399 — (4 ) 395 Mortgage-backed securities: MBS agency 35,764 338 (350 ) 35,752 Total securities held to maturity $ 50,126 $ 494 $ (354 ) $ 50,266
Schedule of Available-For-Sale Securities in a Continuous Unrealized Loss Position	The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of September 30, 2018 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (16 ) $ 750 $ (7 ) $ 109 $ (23 ) $ 859 ABS agency (131 ) 8,778 (120 ) 2,487 (251 ) 11,265 ABS corporate (287 ) 24,966 (149 ) 12,501 (436 ) 37,467 Corporate debt — — (266 ) 4,720 (266 ) 4,720 SBA (156 ) 14,878 (412 ) 16,728 (568 ) 31,606 Mortgage-backed securities: MBS agency (1,536 ) 56,190 (4,288 ) 88,972 (5,824 ) 145,162 MBS corporate (80 ) 7,011 (228 ) 4,012 (308 ) 11,023 Total available for sale $ (2,206 ) $ 112,573 $ (5,470 ) $ 129,529 $ (7,676 ) $ 242,102 Held to Maturity Municipal bonds $ (9 ) $ 1,278 $ — $ — $ (9 ) $ 1,278 SBA (1 ) 125 (1 ) 216 (2 ) 341 Mortgage-backed securities: MBS agency (339 ) 12,390 (738 ) 18,101 (1,077 ) 30,491 Total held to maturity $ (349 ) $ 13,793 $ (739 ) $ 18,317 $ (1,088 ) $ 32,110 The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of December 31, 2017 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (11 ) $ 4,276 $ (4 ) $ 114 $ (15 ) $ 4,390 ABS agency — — (238 ) 7,294 (238 ) 7,294 ABS corporate (55 ) 22,768 — — (55 ) 22,768 Corporate debt (122 ) 4,864 — — (122 ) 4,864 SBA (45 ) 7,421 (104 ) 8,067 (149 ) 15,488 Mortgage-backed securities: MBS agency (394 ) 57,081 (1,632 ) 85,421 (2,026 ) 142,502 MBS corporate (22 ) 5,808 (171 ) 10,172 (193 ) 15,980 Total available for sale $ (649 ) $ 102,218 $ (2,149 ) $ 111,068 $ (2,798 ) $ 213,286 Held to Maturity SBA $ (4 ) $ 395 $ — $ — $ (4 ) $ 395 Mortgage-backed securities: MBS agency (6 ) 1,001 (344 ) 18,494 (350 ) 19,495 Total held to maturity $ (10 ) $ 1,396 $ (344 ) $ 18,494 $ (354 ) $ 19,890
Schedule of Held-To-Maturity Securities in a Continuous Unrealized Loss Position	The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of September 30, 2018 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (16 ) $ 750 $ (7 ) $ 109 $ (23 ) $ 859 ABS agency (131 ) 8,778 (120 ) 2,487 (251 ) 11,265 ABS corporate (287 ) 24,966 (149 ) 12,501 (436 ) 37,467 Corporate debt — — (266 ) 4,720 (266 ) 4,720 SBA (156 ) 14,878 (412 ) 16,728 (568 ) 31,606 Mortgage-backed securities: MBS agency (1,536 ) 56,190 (4,288 ) 88,972 (5,824 ) 145,162 MBS corporate (80 ) 7,011 (228 ) 4,012 (308 ) 11,023 Total available for sale $ (2,206 ) $ 112,573 $ (5,470 ) $ 129,529 $ (7,676 ) $ 242,102 Held to Maturity Municipal bonds $ (9 ) $ 1,278 $ — $ — $ (9 ) $ 1,278 SBA (1 ) 125 (1 ) 216 (2 ) 341 Mortgage-backed securities: MBS agency (339 ) 12,390 (738 ) 18,101 (1,077 ) 30,491 Total held to maturity $ (349 ) $ 13,793 $ (739 ) $ 18,317 $ (1,088 ) $ 32,110 The following shows the unrealized gross losses and fair value of the investment portfolio by length of time that individual securities in each category have been in a continuous loss position as of December 31, 2017 : Less Than Twelve Months Twelve Months or Longer Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Available for Sale Municipal bonds $ (11 ) $ 4,276 $ (4 ) $ 114 $ (15 ) $ 4,390 ABS agency — — (238 ) 7,294 (238 ) 7,294 ABS corporate (55 ) 22,768 — — (55 ) 22,768 Corporate debt (122 ) 4,864 — — (122 ) 4,864 SBA (45 ) 7,421 (104 ) 8,067 (149 ) 15,488 Mortgage-backed securities: MBS agency (394 ) 57,081 (1,632 ) 85,421 (2,026 ) 142,502 MBS corporate (22 ) 5,808 (171 ) 10,172 (193 ) 15,980 Total available for sale $ (649 ) $ 102,218 $ (2,149 ) $ 111,068 $ (2,798 ) $ 213,286 Held to Maturity SBA $ (4 ) $ 395 $ — $ — $ (4 ) $ 395 Mortgage-backed securities: MBS agency (6 ) 1,001 (344 ) 18,494 (350 ) 19,495 Total held to maturity $ (10 ) $ 1,396 $ (344 ) $ 18,494 $ (354 ) $ 19,890
Schedule of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity	Expected maturities of mortgage-backed securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties; therefore, these securities are shown separately. September 30, 2018 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value (In thousands) Mortgage-backed securities: Due within one year $ — $ — $ — $ — Due after one through five years 7,244 6,994 661 647 Due after five through ten years 12,117 11,620 2,206 2,119 Due after ten years 142,956 137,571 28,711 27,735 Total mortgage-backed securities 162,317 156,185 31,578 30,501 All other investment securities: Due within one year — — — — Due after one through five years — — 736 739 Due after five through ten years 19,621 19,209 6,807 6,811 Due after ten years 92,672 91,711 4,787 4,813 Total all other investment securities 112,293 110,920 12,330 12,363 Total investment securities $ 274,610 $ 267,105 $ 43,908 $ 42,864 December 31, 2017 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value (In thousands) Mortgage-backed securities: Due within one year $ — $ — $ — $ — Due after one through five years 7,363 7,260 1,957 1,973 Due after five through ten years 13,337 13,127 2,835 2,792 Due after ten years 146,553 144,701 30,972 30,987 Total mortgage-backed securities 167,253 165,088 35,764 35,752 All other investment securities: Due within one year — — — — Due after one through five years 4,388 4,380 — — Due after five through ten years 29,482 29,661 9,491 9,574 Due after ten years 91,143 91,113 4,871 4,940 Total all other investment securities 125,013 125,154 14,362 14,514 Total investment securities $ 292,266 $ 290,242 $ 50,126 $ 50,266
Summary of Sales of Available-For-Sale and Held-To-Maturity Securities	Sales of securities available-for-sale for the periods shown are summarized as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Proceeds from sales $ 1,979 $ 17,239 $ 56,683 $ 17,239 Gross realized gains — 269 233 269 Gross realized losses (58 ) (133 ) (183 ) (133 )

Loans Receivable - (Tables)

Loans Receivable - (Tables)	9 Months Ended
	Sep. 30, 2018
Loans and Leases Receivable Disclosure [Abstract]
Schedule of Loans Receivable Balances	Loans receivable consisted of the following at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Real Estate: One-to-four family $ 336,739 $ 355,391 Multi-family 85,229 73,767 Commercial real estate 239,431 202,956 Construction and land 59,219 71,145 Total real estate loans 720,618 703,259 Consumer: Home equity 38,744 38,473 Auto and other consumer 70,003 28,106 Total consumer loans 108,747 66,579 Commercial business loans 16,432 16,303 Total loans 845,797 786,141 Less: Net deferred loan fees (821 ) 724 Premium on purchased loans, net (2,175 ) (2,454 ) Allowance for loan losses 9,335 8,760 Total loans receivable, net $ 839,458 $ 779,111
Schedule of Activity in Allowance for Loan Losses	The following tables summarize changes in the ALLL and loan portfolio by segment and impairment method for the periods shown: At or For the Three Months Ended September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) ALLL: Beginning balance $ 3,050 $ 841 $ 2,160 $ 514 $ 642 $ 1,332 $ 716 $ 27 $ 9,282 Provision for loan losses 3 (31 ) (47 ) 28 (81 ) 179 (31 ) 177 197 Charge-offs (2 ) — — — — (265 ) — — (267 ) Recoveries 2 — — — 7 114 — — 123 Ending balance $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 At or For the Nine Months Ended September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) ALLL: Beginning balance $ 3,061 $ 648 $ 1,847 $ 648 $ 787 $ 712 $ 265 $ 792 $ 8,760 Provision for loan losses 6 162 266 (107 ) (242 ) 986 419 (588 ) 902 Charge-offs (18 ) — — — — (522 ) — — (540 ) Recoveries 4 — — 1 23 184 1 — 213 Ending balance $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 At September 30, 2018 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) Total ALLL $ 3,053 $ 810 $ 2,113 $ 542 $ 568 $ 1,360 $ 685 $ 204 $ 9,335 General reserve 3,013 809 2,105 541 563 1,334 125 204 8,694 Specific reserve 40 1 8 1 5 26 560 — 641 Total loans $ 336,739 $ 85,229 $ 239,431 $ 59,219 $ 38,744 $ 70,003 $ 16,432 $ — $ 845,797 Loans collectively evaluated (1) 332,948 85,117 237,430 59,102 38,139 69,873 15,594 — 838,203 Loans individually evaluated (2) 3,791 112 2,001 117 605 130 838 — 7,594 (1) Loans collectively evaluated for general reserves. (2) Loans individually evaluated for specific reserves. At or For the Three Months Ended September 30, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total ALLL: (In thousands) Beginning balance $ 3,071 $ 511 $ 1,735 $ 683 $ 818 $ 523 $ 1,168 $ 14 $ 8,523 Provision for loan losses (263 ) 8 (93 ) 75 (71 ) 87 (1,043 ) 1,300 — Charge-offs — — — — — (70 ) — — (70 ) Recoveries 100 — — — 16 39 — — 155 Ending balance $ 2,908 $ 519 $ 1,642 $ 758 $ 763 $ 579 $ 125 $ 1,314 $ 8,608 At or For the Nine Months Ended September 30, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total ALLL: (In thousands) Beginning balance $ 2,892 $ 370 $ 1,488 $ 585 $ 794 $ 361 $ 652 $ 918 $ 8,060 Provision for loan losses (111 ) 149 154 172 (103 ) 366 (523 ) 396 500 Charge-offs — — — — (79 ) (239 ) (5 ) — (323 ) Recoveries 127 — — 1 151 91 1 — 371 Ending balance $ 2,908 $ 519 $ 1,642 $ 758 $ 763 $ 579 $ 125 $ 1,314 $ 8,608 At December 31, 2017 One-to- four family Multi-family Commercial real estate Construction and land Home equity Auto and other consumer Commercial business Unallocated Total (In thousands) Total ALLL $ 3,061 $ 648 $ 1,847 $ 648 $ 787 $ 712 $ 265 $ 792 $ 8,760 General reserve 3,014 647 1,719 647 779 703 262 792 8,563 Specific reserve 47 1 128 1 8 9 3 — 197 Total loans $ 355,391 $ 73,767 $ 202,956 $ 71,145 $ 38,473 $ 28,106 $ 16,303 $ — $ 786,141 Loans collectively evaluated (1) 351,545 73,652 201,885 71,093 37,838 28,047 16,020 — 780,080 Loans individually evaluated (2) 3,846 115 1,071 52 635 59 283 — 6,061 (1) Loans collectively evaluated for general reserves. (2) Loans individually evaluated for specific reserves.
Schedules of Impaired Loans	The following table presents a summary of loans individually evaluated for impairment by portfolio segment at the dates indicated: September 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance (In thousands) With no allowance recorded: One-to-four family $ 310 $ 343 $ — $ 382 $ 407 $ — Commercial real estate 1,329 1,389 — 256 378 — Construction and land — 2 — — 3 — Home equity 340 442 — 365 515 — Auto and other consumer — 283 — — 124 — Commercial business — 4 — — 4 — Total 1,979 2,463 — 1,003 1,431 — With an allowance recorded: One-to-four family 3,481 3,768 40 3,464 3,718 47 Multi-family 112 112 1 115 115 1 Commercial real estate 672 672 8 815 821 128 Construction and land 117 143 1 52 76 1 Home equity 265 333 5 270 338 8 Auto and other consumer 130 130 26 59 67 9 Commercial business 838 838 560 283 283 3 Total 5,615 5,996 641 5,058 5,418 197 Total impaired loans: One-to-four family 3,791 4,111 40 3,846 4,125 47 Multi-family 112 112 1 115 115 1 Commercial real estate 2,001 2,061 8 1,071 1,199 128 Construction and land 117 145 1 52 79 1 Home equity 605 775 5 635 853 8 Auto and other consumer 130 413 26 59 191 9 Commercial business 838 842 560 283 287 3 Total $ 7,594 $ 8,459 $ 641 $ 6,061 $ 6,849 $ 197 The following table presents the average recorded investment in loans individually evaluated for impairment and the related interest income recognized for the periods shown: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2018 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) With no allowance recorded: One-to-four family $ 401 $ 9 $ 405 $ 12 Commercial real estate 1,334 13 2,148 34 Construction and land — — 1,658 — Home equity 344 3 353 3 Auto and other consumer — 7 — 11 Total 2,079 32 4,564 60 With an allowance recorded: One-to-four family 2,978 74 3,046 156 Multi-family 112 1 113 4 Commercial real estate 708 9 763 26 Construction and land 71 5 57 6 Home equity 266 7 274 16 Auto and other consumer 76 3 98 4 Commercial business 852 14 796 50 Total 5,063 113 5,147 262 Total impaired loans: One-to-four family 3,379 83 3,451 168 Multi-family 112 1 113 4 Commercial real estate 2,042 22 2,911 60 Construction and land 71 5 1,715 6 Home equity 610 10 627 19 Auto and other consumer 76 10 98 15 Commercial business 852 14 796 50 Total $ 7,142 $ 145 $ 9,711 $ 322 Interest income recognized on a cash basis on impaired loans for the three and nine months ended September 30, 2018 , was $101,000 and $278,000 , respectively. The following table presents the average recorded investment in loans individually evaluated for impairment and the related interest income recognized for the periods shown: Three Months Ended Nine Months Ended September 30, 2017 September 30, 2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized (In thousands) With no allowance recorded: One-to-four family $ 778 $ 12 $ 1,069 $ 48 Commercial real estate 318 — 310 1 Home equity 379 5 356 17 Auto and other consumer — 3 — 6 Total 1,475 20 1,735 72 With an allowance recorded: One-to-four family 3,800 72 3,922 219 Multi-family 117 1 119 3 Commercial real estate 1,061 10 1,211 44 Construction and land 27 2 19 3 Home equity 312 7 336 21 Auto and other consumer 20 — 24 — Commercial business 288 4 310 12 Total 5,625 96 5,941 302 Total impaired loans: One-to-four family 4,578 84 4,991 267 Multi-family 117 1 119 3 Commercial real estate 1,379 10 1,521 45 Construction and land 27 2 19 3 Home equity 691 12 692 38 Auto and other consumer 20 3 24 6 Commercial business 288 4 310 12 Total $ 7,100 $ 116 $ 7,676 $ 374
Schedule of Recorded Investments in Nonaccrual Loans	The following table presents the recorded investment in nonaccrual loans by class of loan at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) One-to-four family $ 1,175 $ 681 Commercial real estate 143 378 Construction and land 117 52 Home equity 344 365 Auto and other consumer 131 59 Commercial business 563 — Total nonaccrual loans $ 2,473 $ 1,535
Schedule of Past Due Loans by Class	The following table presents past due loans, net of partial loan charge-offs, by class, as of September 30, 2018 : 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans (In thousands) Real Estate: One-to-four family $ 571 $ — $ 168 $ 739 $ 336,000 $ 336,739 Multi-family — — — — 85,229 85,229 Commercial real estate — — — — 239,431 239,431 Construction and land — — 72 72 59,147 59,219 Total real estate loans 571 — 240 811 719,807 720,618 Consumer: Home equity 4 78 4 86 38,658 38,744 Auto and other consumer 351 59 — 410 69,593 70,003 Total consumer loans 355 137 4 496 108,251 108,747 Commercial business loans — — — — 16,432 16,432 Total loans $ 926 $ 137 $ 244 $ 1,307 $ 844,490 $ 845,797 The following table presents past due loans, net of partial loan charge-offs, by class, as of December 31, 2017 : 30-59 Days 60-89 Days 90 Days or More Total Current Total Loans (In thousands) Real Estate: One-to-four family $ 213 $ — $ 231 $ 444 $ 354,947 $ 355,391 Multi-family — — — — 73,767 73,767 Commercial real estate 91 — — 91 202,865 202,956 Construction and land 1,187 — 19 1,206 69,939 71,145 Total real estate loans 1,491 — 250 1,741 701,518 703,259 Consumer: Home equity 383 78 — 461 38,012 38,473 Auto and other consumer 77 30 — 107 27,999 28,106 Total consumer loans 460 108 — 568 66,011 66,579 Commercial business loans 648 — — 648 15,655 16,303 Total loans $ 2,599 $ 108 $ 250 $ 2,957 $ 783,184 $ 786,141
Schedule of Loans by Risk Category	The following table represents the internally assigned grade as of September 30, 2018 , by class of loans: Pass Watch Special Mention Substandard Doubtful Total (In thousands) Real Estate: One-to-four family $ 330,600 $ 4,314 $ 975 $ 850 $ — $ 336,739 Multi-family 85,117 — 112 — — 85,229 Commercial real estate 232,986 4,317 672 1,456 — 239,431 Construction and land 52,251 6,851 — 117 — 59,219 Total real estate loans 700,954 15,482 1,759 2,423 — 720,618 Consumer: Home equity 37,422 771 93 458 — 38,744 Auto and other consumer 68,696 936 146 216 9 70,003 Total consumer loans 106,118 1,707 239 674 9 108,747 Commercial business loans 14,972 622 275 563 — 16,432 Total loans $ 822,044 $ 17,811 $ 2,273 $ 3,660 $ 9 $ 845,797 The following table represents the internally assigned grade as of December 31, 2017 , by class of loans: Pass Watch Special Mention Substandard Total (In thousands) Real Estate: One-to-four family $ 348,273 $ 4,134 $ 1,580 $ 1,404 $ 355,391 Multi-family 71,535 2,117 115 — 73,767 Commercial real estate 188,251 9,893 964 3,848 202,956 Construction and land 59,360 8,040 3,662 83 71,145 Total real estate loans 667,419 24,184 6,321 5,335 703,259 Consumer: Home equity 37,502 323 93 555 38,473 Auto and other consumer 27,646 202 146 112 28,106 Total consumer loans 65,148 525 239 667 66,579 Commercial business loans 14,230 653 772 648 16,303 Total loans $ 746,797 $ 25,362 $ 7,332 $ 6,650 $ 786,141 The following table represents the credit risk profile based on payment activity as of September 30, 2018 , by class of loans: Nonperforming Performing Total (In thousands) Real Estate: One-to-four family $ 1,175 $ 335,564 $ 336,739 Multi-family — 85,229 85,229 Commercial real estate 143 239,288 239,431 Construction and land 117 59,102 59,219 Consumer: Home equity 344 38,400 38,744 Auto and other consumer 131 69,872 70,003 Commercial business 563 15,869 16,432 Total loans $ 2,473 $ 843,324 $ 845,797 The following table represents the credit risk profile based on payment activity as of December 31, 2017 , by class of loans: Nonperforming Performing Total (In thousands) Real Estate: One-to-four family $ 681 $ 354,710 $ 355,391 Multi-family — 73,767 73,767 Commercial real estate 378 202,578 202,956 Construction and land 52 71,093 71,145 Consumer: Home equity 365 38,108 38,473 Auto and other consumer 59 28,047 28,106 Commercial business — 16,303 16,303 Total loans $ 1,535 $ 784,606 $ 786,141
Schedule of Troubled Debt Restructured Loans	The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the three months ended September 30, 2018 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Modification Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 1 $ — $ — $ 49 $ 49 1 $ — $ — $ 49 $ 49 Post-modification outstanding recorded investment One- to four-family 1 $ — $ — $ 47 $ 47 1 $ — $ — $ 47 $ 47 The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the nine months ended September 30, 2018 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Modification Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 3 $ — $ — $ 229 $ 229 3 $ — $ — $ 229 $ 229 Post-modification outstanding recorded investment One- to four-family 3 $ — $ — $ 260 $ 260 3 $ — $ — $ 260 $ 260 There were no TDR loans which incurred a payment default within 12 months of the restructure date during the three and nine months ended September 30, 2018 . There were no newly restructured and renewals or modifications of existing TDR loans by class that occurred during the three months ended September 30, 2017 , by type of concession granted. The following table presents newly restructured and renewals or modifications of existing TDR loans by class that occurred during the nine months ended September 30, 2017 , by type of concession granted. Number of Contracts Rate Modification Term Modification Combination Total Modifications (Dollars in thousands) Pre-modification outstanding recorded investment One- to four-family 3 $ 95 $ 89 $ 244 $ 428 Commercial real estate 1 — — 134 134 4 95 89 378 562 Post-modification outstanding recorded investment One- to four-family 3 $ 92 $ 87 $ 237 $ 416 Commercial real estate 1 — — 129 129 4 $ 92 $ 87 $ 366 $ 545 The following is a summary of TDR loans which incurred a payment default within 12 months of the restructure date during the three and nine months ended September 30, 2017 . Number of Contracts Rate Modification Term Modification Combination Total Modifications (Dollars in thousands) TDR loans that subsequently defaulted One- to four-family 1 $ — $ 87 $ — $ 87 The following table presents TDR loans by class at the dates indicated by accrual and nonaccrual status. September 30, 2018 December 31, 2017 Accrual Nonaccrual Total Accrual Nonaccrual Total (In thousands) One-to-four family $ 2,503 $ 84 $ 2,587 $ 3,165 $ 176 $ 3,341 Multi-family 112 — 112 115 — 115 Commercial real estate 672 — 672 693 217 910 Home equity 261 — 261 270 — 270 Commercial business 275 — 275 283 — 283 Total TDR loans $ 3,823 $ 84 $ 3,907 $ 4,526 $ 393 $ 4,919 The following table is a summary of information pertaining to TDR loans included in impaired loans at the dates indicated: September 30, 2018 December 31, 2017 (In thousands) Total TDR loans $ 3,907 $ 4,919 Allowance for loan losses related to TDR loans 44 182 Total nonaccrual TDR loans 84 393

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2018
Banking and Thrift [Abstract]
Schedule of Deposits and Weighted Average Interest Rates	Deposits and weighted-average interest rates at the dates indicated are as follows: September 30, 2018 December 31, 2017 Amount Weighted-Average Interest Rate Amount Weighted-Average Interest Rate (Dollars in thousands) Savings $ 125,418 0.52% $ 103,243 0.05% Transaction accounts 269,211 0.05% 272,484 0.01% Money market accounts 285,820 0.43% 270,052 0.33% Certificates of deposit and jumbo certificates 251,156 1.70% 239,253 1.27% $ 931,605 0.68% $ 885,032 0.45%
Schedule of Maturities of Time Deposits	Maturities of certificates at the dates indicated are as follows: September 30, 2018 December 31, 2017 (In thousands) Within one year or less $ 153,915 $ 139,613 After one year through two years 61,274 61,906 After two years through three years 23,338 20,732 After three years through four years 7,868 10,089 After four years through five years 4,756 6,886 After five years 5 27 $ 251,156 $ 239,253
Schedule of Interest on Deposits	Interest on deposits by type for the periods shown was as follows: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 (In thousands) Savings $ 104 $ 15 $ 148 $ 38 Transaction accounts 25 4 38 13 Insured money market accounts 317 206 814 644 Certificates of deposit and jumbo certificates 1,052 686 2,608 1,732 $ 1,498 $ 911 $ 3,608 $ 2,427

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Share	The following table presents a reconciliation of the components used to compute basic and diluted earnings per share for the three and nine months ended September 30, 2018 and 2017 . Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 (In thousands, except share data) Numerator: Net income $ 1,926 $ 1,773 $ 4,975 $ 5,052 Denominator: Basic weighted average common shares outstanding 10,324,048 10,631,508 10,447,231 10,731,555 Dilutive restricted stock grants 72,640 70,753 48,884 72,876 Diluted weighted average common shares outstanding 10,396,688 10,702,261 10,496,115 10,804,431 Basic earnings per share $ 0.19 $ 0.17 $ 0.48 $ 0.47 Diluted earnings per share $ 0.19 $ 0.17 $ 0.47 $ 0.47

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Employee Stock Ownership Plan (ESOP)	Shares issued to the ESOP as of the dates indicated are as follows: September 30, 2018 December 31, 2017 (Dollars in thousands, except share data) Allocated shares 174,584 121,695 Committed to be released shares 13,221 26,442 Unallocated shares 860,224 899,892 Total ESOP shares issued 1,048,029 1,048,029 Fair value of unallocated shares $ 13,247 $ 14,668

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Changes in Non-Vested Restricted Stock Awards	The following tables provide a summary of changes in non-vested restricted stock awards for the periods shown: For the Three Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at July 1, 2018 342,600 $ 13.14 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (33,600 ) 12.70 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue. For the Nine Months Ended September 30, 2018 Shares Weighted-Average Grant Date Fair Value Non-vested at January 1, 2018 347,600 $ 13.18 Granted 20,000 16.16 Vested (65,324 ) 13.06 Canceled (1) (18,076 ) 13.06 Forfeited (38,600 ) 13.14 Non-vested at September 30, 2018 245,600 13.48 (1) A surrender of vested stock awards by a participant surrendering the number of shares valued at the current stock price at the vesting date to cover the total cost of the vested shares. The surrendered shares are canceled and are unavailable for reissue.

Fair Value Accounting and Mea_2

Fair Value Accounting and Measurement (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables show the Company’s assets measured at fair value on a recurring basis at the dates indicated: September 30, 2018 Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Total (In thousands) Securities available-for-sale Municipal bonds $ — $ 859 $ — $ 859 ABS agency — 25,992 — 25,992 ABS corporate — 37,468 — 37,468 Corporate debt — 9,826 — 9,826 SBA — 36,775 — 36,775 MBS agency — 145,162 — 145,162 MBS corporate — 11,023 — 11,023 $ — $ 267,105 $ — $ 267,105 December 31, 2017 Quoted Prices in Active Markets for Identical Assets or Liabilities Significant Other Observable Inputs Significant Unobservable Inputs (Level 1) (Level 2) (Level 3) Total (In thousands) Securities available-for-sale Municipal bonds $ — $ 13,434 $ — $ 13,434 ABS agency — 21,770 — 21,770 ABS corporate — 22,768 — 22,768 Corporate debt — 19,908 — 19,908 SBA — 47,274 — 47,274 MBS agency — 144,542 — 144,542 MBS corporate — 20,546 — 20,546 $ — $ 290,242 $ — $ 290,242
Schedule of Assets Measured at Fair Value on a Nonrecurring Basis	The following tables present the Company’s assets measured at fair value on a nonrecurring basis at the dates indicated: September 30, 2018 Level 1 Level 2 Level 3 Total (In thousands) Impaired loans $ — $ — $ 7,594 $ 7,594 December 31, 2017 Level 1 Level 2 Level 3 Total (In thousands) Impaired loans $ — $ — $ 6,061 $ 6,061
Schedule of the Carrying Value and Estimated Fair Value of Financial Instruments	The following tables present the carrying value and estimated fair value of financial instruments at the dates indicated: September 30, 2018 Carrying Amount Estimated Fair Value Fair Value Measurements Using: Level 1 Level 2 Level 3 (In thousands) Financial assets Cash and cash equivalents $ 25,334 $ 25,334 $ 25,334 $ — $ — Investment securities available for sale 267,105 267,105 — 267,105 — Investment securities held to maturity 43,908 42,864 — 42,864 — Loans receivable, net 839,458 812,418 — — 812,418 FHLB stock 6,326 6,326 — 6,326 — Accrued interest receivable 3,914 3,914 — 3,914 — Mortgage servicing rights, net 1,074 1,532 — — 1,532 Financial liabilities Demand deposits $ 680,449 $ 680,449 $ 680,449 $ — $ — Time deposits 251,156 248,645 — 248,645 — Borrowings 121,526 122,085 — 122,085 — Accrued interest payable 360 360 — 360 — December 31, 2017 Carrying Amount Estimated Fair Value Fair Value Measurements Using: Level 1 Level 2 Level 3 (In thousands) Financial assets Cash and cash equivalents $ 36,801 $ 36,801 $ 36,801 $ — $ — Investment securities available for sale 290,242 290,242 — 290,242 — Investment securities held to maturity 50,126 50,266 — 50,266 — Loans held for sale 788 788 — 788 — Loans receivable, net 779,111 768,181 — — 768,181 FHLB stock 7,023 7,023 — 7,023 — Accrued interest receivable 3,745 3,745 — 3,745 — Mortgage servicing rights, net 1,095 1,669 — — 1,669 Financial liabilities Demand deposits $ 645,779 $ 645,779 $ 645,779 $ — $ — Time deposits 239,253 237,841 — 237,841 — Borrowings 144,100 145,892 — 145,892 — Accrued interest payable 325 325 — 325 —

Noninterest Income (Tables)

Noninterest Income (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Noninterest Income	The Company has included the following table regarding the Company’s noninterest income for the periods presented. Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (In thousands) Noninterest income: Loan fees (1) $ 223 $ 174 $ 480 $ 344 Deposit fees 433 399 1,194 1,219 Debit interchange income 33 39 102 117 Credit card interchange income 456 415 1,309 1,169 Investment securities gain (loss), net (1) (58 ) 136 77 136 Gain on loan sales, net (1) 139 377 456 705 Increase in cash surrender value of BOLI (1) 150 158 448 495 Income from BOLI payout (1) — — — 768 Other income: Investment services revenue 20 43 177 221 Gain or loss on subsidiary (1) 18 (91 ) 50 (131 ) Remaining other income 6 48 14 55 Total other income 44 — 241 145 Total noninterest income $ 1,420 $ 1,698 $ 4,307 $ 5,098 (1) Not within scope of Topic 606

Basis of Presentation and Cri_3

Basis of Presentation and Critical Accounting Policies (Details) - USD ($)	Jan. 29, 2015	Sep. 30, 2018	Dec. 18, 2015
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number of shares issued (in shares)	13,100,360
Gross proceeds from stock offering	$ 121,700,000
Proceeds from initial public offering	117,600,000
Capital contribution to subsidiary	58,400,000
Percentage of shares to be purchased			8.00%
Number of shares to be purchased (in shares)			1,048,029
Future payment obligations under equipment and office leases		$ 9,000,000
Contributions to charitable organization
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Value of charitable consideration, cash portion	$ 400,000
IPO
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number of shares issued (in shares)	12,167,000
Share price (in dollars per share)	$ 10
Secondary Offering | Contributions to charitable organization
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Number of shares issued (in shares)	933,360

Securities - Amortized Cost, Gr

Securities - Amortized Cost, Gross Unrealized Gains and Losses, and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available for Sale
Amortized Cost	$ 274,610	$ 292,266
Gross Unrealized Gains	171	774
Gross Unrealized Losses	(7,676)	(2,798)
Estimated Fair Value	267,105	290,242
Held to Maturity
Amortized Cost	43,908	50,126
Gross Unrealized Gains	44	494
Gross Unrealized Losses	(1,088)	(354)
Estimated Fair Value	42,864	50,266
Investment Securities
Available for Sale
Amortized Cost	112,293	125,013
Estimated Fair Value	110,920	125,154
Held to Maturity
Estimated Fair Value	12,363	14,514
Investment Securities | Municipal bonds
Available for Sale
Amortized Cost	882	13,058
Gross Unrealized Gains	0	391
Gross Unrealized Losses	(23)	(15)
Estimated Fair Value	859	13,434
Held to Maturity
Amortized Cost	11,987	13,963
Gross Unrealized Gains	44	156
Gross Unrealized Losses	(9)	0
Estimated Fair Value	12,022	14,119
Investment Securities | U.S. government agency issued asset-backed securities (ABS agency)
Available for Sale
Amortized Cost	26,182	21,972
Gross Unrealized Gains	61	36
Gross Unrealized Losses	(251)	(238)
Estimated Fair Value	25,992	21,770
Investment Securities | Corporate issued asset-backed securities (ABS corporate)
Available for Sale
Amortized Cost	37,904	22,823
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(436)	(55)
Estimated Fair Value	37,468	22,768
Investment Securities | Corporate issued debt securities (Corporate debt)
Available for Sale
Amortized Cost	9,986	19,835
Gross Unrealized Gains	106	195
Gross Unrealized Losses	(266)	(122)
Estimated Fair Value	9,826	19,908
Investment Securities | U.S. Small Business Administration securities (SBA)
Available for Sale
Amortized Cost	37,339	47,325
Gross Unrealized Gains	4	98
Gross Unrealized Losses	(568)	(149)
Estimated Fair Value	36,775	47,274
Held to Maturity
Amortized Cost	343	399
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(4)
Estimated Fair Value	341	395
Mortgage-backed Securities
Available for Sale
Amortized Cost	162,317	167,253
Estimated Fair Value	156,185	165,088
Held to Maturity
Estimated Fair Value	30,501	35,752
Mortgage-backed Securities | U.S. government agency issued mortgage-backed securities (MBS agency)
Available for Sale
Amortized Cost	150,986	146,532
Gross Unrealized Gains	0	36
Gross Unrealized Losses	(5,824)	(2,026)
Estimated Fair Value	145,162	144,542
Held to Maturity
Amortized Cost	31,578	35,764
Gross Unrealized Gains	0	338
Gross Unrealized Losses	(1,077)	(350)
Estimated Fair Value	30,501	35,752
Mortgage-backed Securities | Corporate issued mortgage-backed securities (MBS corporate)
Available for Sale
Amortized Cost	11,331	20,721
Gross Unrealized Gains	0	18
Gross Unrealized Losses	(308)	(193)
Estimated Fair Value	$ 11,023	$ 20,546

Securities - Securities in a Co

Securities - Securities in a Continuous Unrealized Gross Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	$ (2,206)	$ (649)
Twelve Months or Longer	(5,470)	(2,149)
Gross Unrealized Losses	(7,676)	(2,798)
Available for Sale, Fair Value
Less Than Twelve Months	112,573	102,218
Twelve Months or Longer	129,529	111,068
Fair Value	242,102	213,286
Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	(349)	(10)
Twelve Months or Longer	(739)	(344)
Total	(1,088)	(354)
Held to Maturity, Fair Value
Less Than Twelve Months	13,793	1,396
Twelve Months or Longer	18,317	18,494
Total	32,110	19,890
Investment Securities | Municipal bonds
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(16)	(11)
Twelve Months or Longer	(7)	(4)
Gross Unrealized Losses	(23)	(15)
Available for Sale, Fair Value
Less Than Twelve Months	750	4,276
Twelve Months or Longer	109	114
Fair Value	859	4,390
Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	(9)
Twelve Months or Longer	0
Total	(9)
Held to Maturity, Fair Value
Less Than Twelve Months	1,278
Twelve Months or Longer	0
Total	1,278
Investment Securities | ABS agency
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(131)	0
Twelve Months or Longer	(120)	(238)
Gross Unrealized Losses	(251)	(238)
Available for Sale, Fair Value
Less Than Twelve Months	8,778	0
Twelve Months or Longer	2,487	7,294
Fair Value	11,265	7,294
Investment Securities | ABS corporate
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(287)	(55)
Twelve Months or Longer	(149)	0
Gross Unrealized Losses	(436)	(55)
Available for Sale, Fair Value
Less Than Twelve Months	24,966	22,768
Twelve Months or Longer	12,501	0
Fair Value	37,467	22,768
Investment Securities | Corporate debt
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	0	(122)
Twelve Months or Longer	(266)	0
Gross Unrealized Losses	(266)	(122)
Available for Sale, Fair Value
Less Than Twelve Months	0	4,864
Twelve Months or Longer	4,720	0
Fair Value	4,720	4,864
Investment Securities | SBA
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(156)	(45)
Twelve Months or Longer	(412)	(104)
Gross Unrealized Losses	(568)	(149)
Available for Sale, Fair Value
Less Than Twelve Months	14,878	7,421
Twelve Months or Longer	16,728	8,067
Fair Value	31,606	15,488
Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	(1)	(4)
Twelve Months or Longer	(1)	0
Total	(2)	(4)
Held to Maturity, Fair Value
Less Than Twelve Months	125	395
Twelve Months or Longer	216	0
Total	341	395
Mortgage-backed Securities | MBS agency
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(1,536)	(394)
Twelve Months or Longer	(4,288)	(1,632)
Gross Unrealized Losses	(5,824)	(2,026)
Available for Sale, Fair Value
Less Than Twelve Months	56,190	57,081
Twelve Months or Longer	88,972	85,421
Fair Value	145,162	142,502
Held to Maturity, Gross Unrealized Losses
Less Than Twelve Months	(339)	(6)
Twelve Months or Longer	(738)	(344)
Total	(1,077)	(350)
Held to Maturity, Fair Value
Less Than Twelve Months	12,390	1,001
Twelve Months or Longer	18,101	18,494
Total	30,491	19,495
Mortgage-backed Securities | MBS corporate
Available for Sale, Gross Unrealized Losses
Less Than Twelve Months	(80)	(22)
Twelve Months or Longer	(228)	(171)
Gross Unrealized Losses	(308)	(193)
Available for Sale, Fair Value
Less Than Twelve Months	7,011	5,808
Twelve Months or Longer	4,012	10,172
Fair Value	$ 11,023	$ 15,980

Securities - Narrative (Details

Securities - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)security	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)security	Sep. 30, 2017USD ($)	Dec. 31, 2017security
Investments, Debt and Equity Securities [Abstract]
Number of securities in an unrealized loss position | security	75		75		63
OTTI losses | $	$ 0	$ 0	$ 0	$ 0

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value by Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available-for-sale Securities, Amortized Cost
Amortized Cost	$ 274,610	$ 292,266
Available-for-sale Securities, Estimated Fair Value
Total	267,105	290,242
Held-to-maturity Securities, Amortized Cost
Total	43,908	50,126
Held-to-maturity Securities, Estimated Fair Value
Total	42,864	50,266
Mortgage-backed Securities
Available-for-sale Securities, Amortized Cost
Due within one year	0	0
Due after one through five years	7,244	7,363
Due after five through ten years	12,117	13,337
Due after ten years	142,956	146,553
Amortized Cost	162,317	167,253
Available-for-sale Securities, Estimated Fair Value
Due within one year	0	0
Due after one through five years	6,994	7,260
Due after five through ten years	11,620	13,127
Due after ten years	137,571	144,701
Total	156,185	165,088
Held-to-maturity Securities, Amortized Cost
Due within one year	0	0
Due after one through five years	661	1,957
Due after five through ten years	2,206	2,835
Due after ten years	28,711	30,972
Total	31,578	35,764
Held-to-maturity Securities, Estimated Fair Value
Due within one year	0	0
Due after one through five years	647	1,973
Due after five through ten years	2,119	2,792
Due after ten years	27,735	30,987
Total	30,501	35,752
Investment Securities
Available-for-sale Securities, Amortized Cost
Due within one year	0	0
Due after one through five years	0	4,388
Due after five through ten years	19,621	29,482
Due after ten years	92,672	91,143
Amortized Cost	112,293	125,013
Available-for-sale Securities, Estimated Fair Value
Due within one year	0	0
Due after one through five years	0	4,380
Due after five through ten years	19,209	29,661
Due after ten years	91,711	91,113
Total	110,920	125,154
Held-to-maturity Securities, Amortized Cost
Due within one year	0	0
Due after one through five years	736	0
Due after five through ten years	6,807	9,491
Due after ten years	4,787	4,871
Total	12,330	14,362
Held-to-maturity Securities, Estimated Fair Value
Due within one year	0	0
Due after one through five years	739	0
Due after five through ten years	6,811	9,574
Due after ten years	4,813	4,940
Total	$ 12,363	$ 14,514

Securities - Sale of Available-

Securities - Sale of Available-for-sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 1,979	$ 17,239	$ 56,683	$ 17,239
Gross realized gains	0	269	233	269
Gross realized losses	$ (58)	$ (133)	$ (183)	$ (133)

Securities - Sale of Held-to-ma

Securities - Sale of Held-to-maturity Securities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of securities held to maturity	$ 2,702	$ 0
Held-to-maturity securities, gross realized gains	32
Held-to-maturity securities, gross realized losses	$ (5)

Loans Receivable - Balance of L

Loans Receivable - Balance of Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 845,797		$ 786,141
Net deferred loan fees	(821)		724
Premium on purchased loans, net	(2,175)		(2,454)
Allowance for loan losses	9,335	$ 9,282	8,760	$ 8,608	$ 8,523	$ 8,060
Total loans receivable, net	839,458		779,111
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	720,618		703,259
Real Estate | Real estate loans | One-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	336,739		355,391
Allowance for loan losses	3,053	3,050	3,061	2,908	3,071	2,892
Real Estate | Real estate loans | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	85,229		73,767
Allowance for loan losses	810	841	648	519	511	370
Real Estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	239,431		202,956
Allowance for loan losses	2,113	2,160	1,847	1,642	1,735	1,488
Real Estate | Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	59,219		71,145
Allowance for loan losses	542	514	648	758	683	585
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	108,747		66,579
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	38,744		38,473
Allowance for loan losses	568	642	787	763	818	794
Consumer | Auto and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	70,003		28,106
Allowance for loan losses	1,360	1,332	712	579	523	361
Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,432		16,303
Allowance for loan losses	$ 685	$ 716	$ 265	$ 125	$ 1,168	$ 652

Loans Receivable - Allowance fo

Loans Receivable - Allowance for Loan Losses (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
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 9,282	$ 8,523	$ 8,760	$ 8,060
Provision for loan losses	197	0	902	500
Charge-offs	(267)	(70)	(540)	(323)
Recoveries	123	155	213	371
Ending balance	9,335	8,608	9,335	8,608
Total ALLL	9,282	8,523	8,760	8,608	$ 9,335	$ 8,760
General reserve					8,694	8,563
Specific reserve					641	197
Total loans					845,797	786,141
Loans collectively evaluated					838,203	780,080
Loans individually evaluated					7,594	6,061
Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total loans					720,618	703,259
Real Estate | Real estate loans | One-to-four family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,050	3,071	3,061	2,892
Provision for loan losses	3	(263)	6	(111)
Charge-offs	(2)	0	(18)	0
Recoveries	2	100	4	127
Ending balance	3,053	2,908	3,053	2,908
Total ALLL	3,050	3,071	3,061	2,908	3,053	3,061
General reserve					3,013	3,014
Specific reserve					40	47
Total loans					336,739	355,391
Loans collectively evaluated					332,948	351,545
Loans individually evaluated					3,791	3,846
Real Estate | Real estate loans | Multi-family
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	841	511	648	370
Provision for loan losses	(31)	8	162	149
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	810	519	810	519
Total ALLL	841	511	648	519	810	648
General reserve					809	647
Specific reserve					1	1
Total loans					85,229	73,767
Loans collectively evaluated					85,117	73,652
Loans individually evaluated					112	115
Real Estate | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,160	1,735	1,847	1,488
Provision for loan losses	(47)	(93)	266	154
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	2,113	1,642	2,113	1,642
Total ALLL	2,160	1,735	1,847	1,642	2,113	1,847
General reserve					2,105	1,719
Specific reserve					8	128
Total loans					239,431	202,956
Loans collectively evaluated					237,430	201,885
Loans individually evaluated					2,001	1,071
Real Estate | Construction and land
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	514	683	648	585
Provision for loan losses	28	75	(107)	172
Charge-offs	0	0	0	0
Recoveries	0	0	1	1
Ending balance	542	758	542	758
Total ALLL	514	683	648	758	542	648
General reserve					541	647
Specific reserve					1	1
Total loans					59,219	71,145
Loans collectively evaluated					59,102	71,093
Loans individually evaluated					117	52
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total loans					108,747	66,579
Consumer | Home equity
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	642	818	787	794
Provision for loan losses	(81)	(71)	(242)	(103)
Charge-offs	0	0	0	(79)
Recoveries	7	16	23	151
Ending balance	568	763	568	763
Total ALLL	642	818	787	763	568	787
General reserve					563	779
Specific reserve					5	8
Total loans					38,744	38,473
Loans collectively evaluated					38,139	37,838
Loans individually evaluated					605	635
Consumer | Auto and other consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,332	523	712	361
Provision for loan losses	179	87	986	366
Charge-offs	(265)	(70)	(522)	(239)
Recoveries	114	39	184	91
Ending balance	1,360	579	1,360	579
Total ALLL	1,332	523	712	579	1,360	712
General reserve					1,334	703
Specific reserve					26	9
Total loans					70,003	28,106
Loans collectively evaluated					69,873	28,047
Loans individually evaluated					130	59
Commercial business loans
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	716	1,168	265	652
Provision for loan losses	(31)	(1,043)	419	(523)
Charge-offs	0	0	0	(5)
Recoveries	0	0	1	1
Ending balance	685	125	685	125
Total ALLL	716	1,168	265	125	685	265
General reserve					125	262
Specific reserve					560	3
Total loans					16,432	16,303
Loans collectively evaluated					15,594	16,020
Loans individually evaluated					838	283
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	27	14	792	918
Provision for loan losses	177	1,300	(588)	396
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	204	1,314	204	1,314
Total ALLL	$ 27	$ 14	$ 792	$ 1,314	204	792
General reserve					204	792
Specific reserve					0	0
Total loans					0	0
Loans collectively evaluated					0	0
Loans individually evaluated					$ 0	$ 0

Loans Receivable - Impaired Loa

Loans Receivable - Impaired Loans By Segment (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
Recorded Investment
Recorded Investment, No Allowance Recorded	$ 1,979		$ 1,979		$ 1,003
Recorded Investment, Allowance Recorded	5,615		5,615		5,058
Recorded Investment	7,594		7,594		6,061
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	2,463		2,463		1,431
Unpaid Principal Balance, Allowance Recorded	5,996		5,996		5,418
Unpaid Principal Balance	8,459		8,459		6,849
Related Allowance	641		641		197
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	2,079	$ 1,475	4,564	$ 1,735
Average Recorded Investment, Allowance Recorded	5,063	5,625	5,147	5,941
Average Recorded Investment	7,142	7,100	9,711	7,676
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	32	20	60	72
Interest Income Recognized, Allowance Recorded	113	96	262	302
Interest Income Recognized	145	116	322	374
Real Estate | Real estate loans | One-to-four family
Recorded Investment
Recorded Investment, No Allowance Recorded	310		310		382
Recorded Investment, Allowance Recorded	3,481		3,481		3,464
Recorded Investment	3,791		3,791		3,846
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	343		343		407
Unpaid Principal Balance, Allowance Recorded	3,768		3,768		3,718
Unpaid Principal Balance	4,111		4,111		4,125
Related Allowance	40		40		47
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	401	778	405	1,069
Average Recorded Investment, Allowance Recorded	2,978	3,800	3,046	3,922
Average Recorded Investment	3,379	4,578	3,451	4,991
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	9	12	12	48
Interest Income Recognized, Allowance Recorded	74	72	156	219
Interest Income Recognized	83	84	168	267
Real Estate | Real estate loans | Multi-family
Recorded Investment
Recorded Investment, Allowance Recorded	112		112		115
Recorded Investment	112		112		115
Unpaid Principal Balance
Unpaid Principal Balance, Allowance Recorded	112		112		115
Unpaid Principal Balance	112		112		115
Related Allowance	1		1		1
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, Allowance Recorded	112	117	113	119
Average Recorded Investment	112	117	113	119
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, Allowance Recorded	1	1	4	3
Interest Income Recognized	1	1	4	3
Real Estate | Commercial real estate
Recorded Investment
Recorded Investment, No Allowance Recorded	1,329		1,329		256
Recorded Investment, Allowance Recorded	672		672		815
Recorded Investment	2,001		2,001		1,071
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	1,389		1,389		378
Unpaid Principal Balance, Allowance Recorded	672		672		821
Unpaid Principal Balance	2,061		2,061		1,199
Related Allowance	8		8		128
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	1,334	318	2,148	310
Average Recorded Investment, Allowance Recorded	708	1,061	763	1,211
Average Recorded Investment	2,042	1,379	2,911	1,521
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	13	0	34	1
Interest Income Recognized, Allowance Recorded	9	10	26	44
Interest Income Recognized	22	10	60	45
Real Estate | Construction and land
Recorded Investment
Recorded Investment, No Allowance Recorded	0		0		0
Recorded Investment, Allowance Recorded	117		117		52
Recorded Investment	117		117		52
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	2		2		3
Unpaid Principal Balance, Allowance Recorded	143		143		76
Unpaid Principal Balance	145		145		79
Related Allowance	1		1		1
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	0		1,658
Average Recorded Investment, Allowance Recorded	71	27	57	19
Average Recorded Investment	71	27	1,715	19
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	0		0
Interest Income Recognized, Allowance Recorded	5	2	6	3
Interest Income Recognized	5	2	6	3
Consumer | Home equity
Recorded Investment
Recorded Investment, No Allowance Recorded	340		340		365
Recorded Investment, Allowance Recorded	265		265		270
Recorded Investment	605		605		635
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	442		442		515
Unpaid Principal Balance, Allowance Recorded	333		333		338
Unpaid Principal Balance	775		775		853
Related Allowance	5		5		8
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	344	379	353	356
Average Recorded Investment, Allowance Recorded	266	312	274	336
Average Recorded Investment	610	691	627	692
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	3	5	3	17
Interest Income Recognized, Allowance Recorded	7	7	16	21
Interest Income Recognized	10	12	19	38
Consumer | Auto and other consumer
Recorded Investment
Recorded Investment, No Allowance Recorded	0		0		0
Recorded Investment, Allowance Recorded	130		130		59
Recorded Investment	130		130		59
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	283		283		124
Unpaid Principal Balance, Allowance Recorded	130		130		67
Unpaid Principal Balance	413		413		191
Related Allowance	26		26		9
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, No Allowance Recorded	0	0	0	0
Average Recorded Investment, Allowance Recorded	76	20	98	24
Average Recorded Investment	76	20	98	24
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, No Allowance Recorded	7	3	11	6
Interest Income Recognized, Allowance Recorded	3	0	4	0
Interest Income Recognized	10	3	15	6
Commercial business loans
Recorded Investment
Recorded Investment, No Allowance Recorded	0		0		0
Recorded Investment, Allowance Recorded	838		838		283
Recorded Investment	838		838		283
Unpaid Principal Balance
Unpaid Principal Balance, No Allowance Recorded	4		4		4
Unpaid Principal Balance, Allowance Recorded	838		838		283
Unpaid Principal Balance	842		842		287
Related Allowance	560		560		$ 3
Impaired Financing Receivable, Average Recorded Investment [Abstract]
Average Recorded Investment, Allowance Recorded	852	288	796	310
Average Recorded Investment	852	288	796	310
Impaired Financing Receivable, Interest Income, Accrual Method [Abstract]
Interest Income Recognized, Allowance Recorded	14	4	50	12
Interest Income Recognized	$ 14	$ 4	$ 50	$ 12

Loans Receivable - Narrative (D

Loans Receivable - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income recognized on a cash basis for impaired loans	$ 101,000	$ 80,000	$ 278,000	$ 251,000
Loans	$ 845,797,000		$ 845,797,000		$ 786,141,000
Number of contracts | contract	0	0	0
Troubled debt restructuring, debtor, subsequent periods, contingent payments, amount	$ 0		$ 0
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 0		$ 0		$ 0

Loans Receivable - Nonaccrual L

Loans Receivable - Nonaccrual Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	$ 2,473	$ 1,535
Real Estate | Real estate loans | One-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	1,175	681
Real Estate | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	143	378
Real Estate | Construction and land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	117	52
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	344	365
Consumer | Auto and other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	131	59
Consumer | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded investment, nonaccrual loans	$ 563	$ 0

Loans Receivable - Reconciliati

Loans Receivable - Reconciliation of Past Due Loans (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,307,000	$ 2,957,000
Current	844,490,000	783,184,000
Total loans	845,797,000	786,141,000
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	926,000	2,599,000
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	137,000	108,000
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	244,000	250,000
Total loans	0	0
Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	811,000	1,741,000
Current	719,807,000	701,518,000
Total loans	720,618,000	703,259,000
Real Estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	571,000	1,491,000
Real Estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	240,000	250,000
Real Estate | Real estate loans | One-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	739,000	444,000
Current	336,000,000	354,947,000
Total loans	336,739,000	355,391,000
Real Estate | Real estate loans | One-to-four family | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	571,000	213,000
Real Estate | Real estate loans | One-to-four family | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Real estate loans | One-to-four family | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	168,000	231,000
Real Estate | Real estate loans | Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	85,229,000	73,767,000
Total loans	85,229,000	73,767,000
Real Estate | Real estate loans | Multi-family | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Real estate loans | Multi-family | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Real estate loans | Multi-family | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	91,000
Current	239,431,000	202,865,000
Total loans	239,431,000	202,956,000
Real Estate | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	91,000
Real Estate | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Commercial real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Construction and land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	72,000	1,206,000
Current	59,147,000	69,939,000
Total loans	59,219,000	71,145,000
Real Estate | Construction and land | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	1,187,000
Real Estate | Construction and land | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real Estate | Construction and land | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	72,000	19,000
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	496,000	568,000
Current	108,251,000	66,011,000
Total loans	108,747,000	66,579,000
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	355,000	460,000
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	137,000	108,000
Consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	0
Consumer | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	86,000	461,000
Current	38,658,000	38,012,000
Total loans	38,744,000	38,473,000
Consumer | Home equity | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	383,000
Consumer | Home equity | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	78,000	78,000
Consumer | Home equity | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,000	0
Consumer | Auto and other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	410,000	107,000
Current	69,593,000	27,999,000
Total loans	70,003,000	28,106,000
Consumer | Auto and other consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	351,000	77,000
Consumer | Auto and other consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	59,000	30,000
Consumer | Auto and other consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	648,000
Current	16,432,000	15,655,000
Total loans	16,432,000	16,303,000
Commercial business loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	648,000
Commercial business loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial business loans | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators by Class of Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 845,797	$ 786,141
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	822,044	746,797
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	17,811	25,362
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	2,273	7,332
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,660	6,650
Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	2,473	1,535
Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	843,324	784,606
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	9
Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans	720,618	703,259
Real Estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	700,954	667,419
Real Estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	15,482	24,184
Real Estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	1,759	6,321
Real Estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,423	5,335
Real Estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Real Estate | Real estate loans | One-to-four family
Financing Receivable, Recorded Investment [Line Items]
Loans	336,739	355,391
Real Estate | Real estate loans | One-to-four family | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	330,600	348,273
Real Estate | Real estate loans | One-to-four family | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	4,314	4,134
Real Estate | Real estate loans | One-to-four family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	975	1,580
Real Estate | Real estate loans | One-to-four family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	850	1,404
Real Estate | Real estate loans | One-to-four family | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	1,175	681
Real Estate | Real estate loans | One-to-four family | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	335,564	354,710
Real Estate | Real estate loans | One-to-four family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Real Estate | Real estate loans | Multi-family
Financing Receivable, Recorded Investment [Line Items]
Loans	85,229	73,767
Real Estate | Real estate loans | Multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	85,117	71,535
Real Estate | Real estate loans | Multi-family | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	0	2,117
Real Estate | Real estate loans | Multi-family | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	112	115
Real Estate | Real estate loans | Multi-family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Real Estate | Real estate loans | Multi-family | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Real Estate | Real estate loans | Multi-family | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	85,229	73,767
Real Estate | Real estate loans | Multi-family | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Real Estate | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans	239,431	202,956
Real Estate | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	232,986	188,251
Real Estate | Commercial real estate | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	4,317	9,893
Real Estate | Commercial real estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	672	964
Real Estate | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,456	3,848
Real Estate | Commercial real estate | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	143	378
Real Estate | Commercial real estate | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	239,288	202,578
Real Estate | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Real Estate | Construction and land
Financing Receivable, Recorded Investment [Line Items]
Loans	59,219	71,145
Real Estate | Construction and land | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	52,251	59,360
Real Estate | Construction and land | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	6,851	8,040
Real Estate | Construction and land | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	3,662
Real Estate | Construction and land | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	117	83
Real Estate | Construction and land | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	117	52
Real Estate | Construction and land | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	59,102	71,093
Real Estate | Construction and land | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	108,747	66,579
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	106,118	65,148
Consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	1,707	525
Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	239	239
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	674	667
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	9
Consumer | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans	38,744	38,473
Consumer | Home equity | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	37,422	37,502
Consumer | Home equity | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	771	323
Consumer | Home equity | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	93	93
Consumer | Home equity | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	458	555
Consumer | Home equity | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	344	365
Consumer | Home equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	38,400	38,108
Consumer | Home equity | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	0
Consumer | Auto and other consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	70,003	28,106
Consumer | Auto and other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	68,696	27,646
Consumer | Auto and other consumer | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	936	202
Consumer | Auto and other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	146	146
Consumer | Auto and other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	216	112
Consumer | Auto and other consumer | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	131	59
Consumer | Auto and other consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	69,872	28,047
Consumer | Auto and other consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	9
Commercial business loans
Financing Receivable, Recorded Investment [Line Items]
Loans	16,432	16,303
Commercial business loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	14,972	14,230
Commercial business loans | Watch
Financing Receivable, Recorded Investment [Line Items]
Loans	622	653
Commercial business loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	275	772
Commercial business loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	563	648
Commercial business loans | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans	563	0
Commercial business loans | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans	15,869	$ 16,303
Commercial business loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 0

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract	Dec. 31, 2017USD ($)
Financing Receivable, Modifications [Line Items]
Total TDR loans	$ 3,907		$ 3,907		$ 4,919
Allowance for loan losses related to TDR loans	44		44		182
Total nonaccrual TDR loans	$ 84		$ 84		393
Number of contracts | contract	0	0	0
Real Estate | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total TDR loans	$ 672		$ 672		910
Total nonaccrual TDR loans	0		0		217
One-to-four family | Real Estate | Real estate loans
Financing Receivable, Modifications [Line Items]
Total TDR loans	2,587		2,587		3,341
Total nonaccrual TDR loans	$ 84		$ 84		$ 176
Number of contracts | contract		1		1
Number of modifications		$ 87		$ 87
One-to-four family | Real Estate | Real estate loans | Rate Modification
Financing Receivable, Modifications [Line Items]
Number of modifications		0		0
One-to-four family | Real Estate | Real estate loans | Term Modification
Financing Receivable, Modifications [Line Items]
Number of modifications		87		87
One-to-four family | Real Estate | Real estate loans | Combination Modification
Financing Receivable, Modifications [Line Items]
Number of modifications		$ 0		$ 0

Loans Receivable - Troubled D_2

Loans Receivable - Troubled Debt Restructuring Schedule of Modified Loans (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)contract	Sep. 30, 2018USD ($)contract	Sep. 30, 2017USD ($)contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification, number of contracts | contract	1	3	4,000
Financing receivable, modifications, pre-modification recorded investment	$ 49	$ 229	$ 562
Financing receivable, modifications, post-modification, number of contracts | contract	1	3	4,000
Financing receivable, modifications, post-modification recorded investment	$ 47	$ 260	$ 545
One-to-four family | Real Estate | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification, number of contracts | contract	1	3	3,000
Financing receivable, modifications, pre-modification recorded investment	$ 49	$ 229	$ 428
Financing receivable, modifications, post-modification, number of contracts | contract	1	3	3,000
Financing receivable, modifications, post-modification recorded investment	$ 47	$ 260	$ 416
Commercial real estate | Commercial business loans | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification, number of contracts | contract			1,000
Financing receivable, modifications, pre-modification recorded investment			$ 134
Financing receivable, modifications, post-modification, number of contracts | contract			1,000
Financing receivable, modifications, post-modification recorded investment			$ 129
Rate Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	0	0	95
Financing receivable, modifications, post-modification recorded investment	0	0	92
Rate Modification | One-to-four family | Real Estate | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	0	0	95
Financing receivable, modifications, post-modification recorded investment	0	0	92
Rate Modification | Commercial real estate | Commercial business loans | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment			0
Financing receivable, modifications, post-modification recorded investment			0
Term Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	0	0	89
Financing receivable, modifications, post-modification recorded investment	0	0	87
Term Modification | One-to-four family | Real Estate | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	0	0	89
Financing receivable, modifications, post-modification recorded investment	0	0	87
Term Modification | Commercial real estate | Commercial business loans | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment			0
Financing receivable, modifications, post-modification recorded investment			0
Combination Modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	49	229	378
Financing receivable, modifications, post-modification recorded investment	47	260	366
Combination Modification | One-to-four family | Real Estate | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment	49	229	244
Financing receivable, modifications, post-modification recorded investment	$ 47	$ 260	237
Combination Modification | Commercial real estate | Commercial business loans | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, pre-modification recorded investment			134
Financing receivable, modifications, post-modification recorded investment			$ 129

Loans Receivable - Troubled D_3

Loans Receivable - Troubled Debt Restructured Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Accrual loans	$ 3,823	$ 4,526
Nonaccrual loans	84	393
Total TDR loans	3,907	4,919
Real Estate | Real estate loans | One-to-four family
Financing Receivable, Modifications [Line Items]
Accrual loans	2,503	3,165
Nonaccrual loans	84	176
Total TDR loans	2,587	3,341
Real Estate | Real estate loans | Multi-family
Financing Receivable, Modifications [Line Items]
Accrual loans	112	115
Nonaccrual loans	0	0
Total TDR loans	112	115
Real Estate | Commercial real estate
Financing Receivable, Modifications [Line Items]
Accrual loans	672	693
Nonaccrual loans	0	217
Total TDR loans	672	910
Consumer | Home equity
Financing Receivable, Modifications [Line Items]
Accrual loans	261	270
Nonaccrual loans	0	0
Total TDR loans	261	270
Commercial business loans
Financing Receivable, Modifications [Line Items]
Accrual loans	275	283
Nonaccrual loans	0	0
Total TDR loans	$ 275	$ 283

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Time deposits in excess of FDIC limit of $250,000	$ 101.7	$ 82.3
Public fund deposits	87.6	56.2
Investment securities pledged as collateral, carrying value	$ 54.7	$ 41

Deposits - Summary of Deposits

Deposits - Summary of Deposits (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
Deposits, by Type [Abstract]
Savings	$ 125,418		$ 125,418		$ 103,243
Transaction accounts	269,211		269,211		272,484
Money market accounts	285,820		285,820		270,052
Certificates of deposit and jumbo certificates	251,156		251,156		239,253
Total Deposits	$ 931,605		$ 931,605		$ 885,032
Weighted Average Rate of Deposits, by Type [Abstract]
Weighted-average interest rate, savings	0.52%		0.52%		0.05%
Weighted-average interest rate, transaction accounts	0.05%		0.05%		0.01%
Weighted-average interest rate, money market accounts	0.43%		0.43%		0.33%
Weighted-average interest rate, certificates of deposit and jumbo certificates	1.70%		1.70%		1.27%
Weighted-average interest rate	0.68%		0.68%		0.45%
Time Deposits, Fiscal Year Maturity [Abstract]
Within one year or less	$ 153,915		$ 153,915		$ 139,613
After one year through two years	61,274		61,274		61,906
After two years through three years	23,338		23,338		20,732
After three years through four years	7,868		7,868		10,089
After four years through five years	4,756		4,756		6,886
After five years	5		5		27
Total time deposits	251,156		251,156		$ 239,253
Interest Expense, Deposits [Abstract]
Savings	104	$ 15	148	$ 38
Transaction accounts	25	4	38	13
Insured money market accounts	317	206	814	644
Certificates of deposit and jumbo certificates	1,052	686	2,608	1,732
Interest expense	$ 1,498	$ 911	$ 3,608	$ 2,427

Federal Taxes on Income (Detail

Federal Taxes on Income (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Valuation allowance	$ 1.2
Effective income tax rate	18.60%	21.60%

Earnings per Share (Details)

Earnings per Share (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	Dec. 31, 2017
Numerator:
Net income	$ 1,926	$ 1,773	$ 4,975	$ 5,052
Denominator:
Basic weighted average common shares outstanding (in shares)	10,324,048	10,631,508	10,447,231	10,731,555
Dilutive restricted stock grants (in shares)	72,640	70,753	48,884	72,876
Diluted weighted average common shares outstanding (in shares)	10,396,688	10,702,261	10,496,115	10,804,431
Basic earnings per share (in dollars per share)	$ 0.19	$ 0.17	$ 0.48	$ 0.47
Diluted earnings per share (in dollars per share)	$ 0.19	$ 0.17	$ 0.47	$ 0.47
Unallocated shares (in shares)	860,224	913,113	860,224	913,113	899,892
Antidilutive securities excluded from computation of earnings per share (in shares)	916	2,718	916	2,718

Employee Benefits (Details)

Employee Benefits (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
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Minimum service period (over 12 month period)			1000 hours
Requisite service period			12 months
Debt structure, amortization period			20 years
Debt structure, estimated interest rate			2.46%
Principal and interest payments from ESOP			$ 835
Compensation expense	$ 214	$ 210	$ 651	$ 605
Employee Stock Ownership Plan (ESOP), Shares in ESOP [Abstract]
Allocated shares (in shares)	174,584		174,584		121,695
Committed to be released shares (in shares)	13,221		13,221		26,442
Unallocated shares (in shares)	860,224	913,113	860,224	913,113	899,892
Total ESOP shares (in shares)	1,048,029		1,048,029		1,048,029
Fair value of unallocated shares	$ 13,247		$ 13,247		$ 14,668

Stock-based Compensation - Narr

Stock-based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Nov. 16, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	0	0	0	0
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards granted (in shares)	20,000	50,000	20,000	50,000
Vesting period			5 years
Total unrecognized compensation costs	$ 3,100		$ 3,100
Remaining weighted-average vesting period			3 years 1 month 21 days
First Northwest Bancorp 2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)					1,834,050
Number of shares available for grant (in shares)	1,361,550		1,361,550
Total compensation expense	$ 256	$ 321	$ 788	$ 788
First Northwest Bancorp 2015 Equity Incentive Plan | Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	117,014		117,014
Director | First Northwest Bancorp 2015 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	$ 86	$ 98	$ 256	$ 292

Stock-based Compensation - Summ

Stock-based Compensation - Summary of Non-Vested Restricted Stock Awards (Details) - Restricted Stock Award - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Shares
Non-vested, beginning of period (in shares)	342,600		347,600
Granted (in shares)	20,000	50,000	20,000	50,000
Vested (in shares)	(65,324)		(65,324)
Canceled (in shares)	(18,076)		(18,076)
Forfeited (in shares)	(33,600)		(38,600)
Non-vested at end of period (in shares)	245,600		245,600
Weighted-Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share)	$ 13.14		$ 13.18
Granted (in dollars per share)	16.16		16.16
Vested (in dollars per share)	13.06		13.06
Canceled (in dollars per share)	13.06		13.06
Forfeited (in dollars per share)	12.70		13.14
Non-vested at end of period (in dollars per share)	$ 13.48		$ 13.48

Fair Value Accounting and Mea_3

Fair Value Accounting and Measurement - Schedule of Assets and Liabilities Measured at Fair Value on a 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]
Investment securities available for sale	$ 267,105	$ 290,242
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	267,105	290,242
Recurring | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	859	13,434
Recurring | ABS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	25,992	21,770
Recurring | ABS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	37,468	22,768
Recurring | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	9,826	19,908
Recurring | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	36,775	47,274
Recurring | MBS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	145,162	144,542
Recurring | MBS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	11,023	20,546
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | ABS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | ABS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | MBS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | MBS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	267,105	290,242
Recurring | Significant Other Observable Inputs (Level 2) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	859	13,434
Recurring | Significant Other Observable Inputs (Level 2) | ABS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	25,992	21,770
Recurring | Significant Other Observable Inputs (Level 2) | ABS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	37,468	22,768
Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	9,826	19,908
Recurring | Significant Other Observable Inputs (Level 2) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	36,775	47,274
Recurring | Significant Other Observable Inputs (Level 2) | MBS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	145,162	144,542
Recurring | Significant Other Observable Inputs (Level 2) | MBS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	11,023	20,546
Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | ABS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | ABS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | SBA
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | MBS agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Recurring | Significant Unobservable Inputs (Level 3) | MBS corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 0	$ 0

Fair Value Accounting and Mea_4

Fair Value Accounting and Measurement - Schedule of Assets on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 7,594	$ 6,061
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	7,594	6,061
Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 7,594	$ 6,061

Fair Value Accounting and Mea_5

Fair Value Accounting and Measurement - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financial assets
Investment securities available for sale	$ 267,105	$ 290,242
Investment securities held to maturity	42,864	50,266
Accrued interest receivable	3,914	3,745
Financial liabilities
Accrued interest payable	360	325
Level 1
Financial assets
Cash and cash equivalents	25,334	36,801
Investment securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale		0
Loans receivable, net	0	0
FHLB stock	0	0
Accrued interest receivable	0	0
Mortgage servicing rights, net	0	0
Financial liabilities
Borrowings	0	0
Accrued interest payable	0	0
Level 1 | Demand deposits
Financial liabilities
Deposits	680,449	645,779
Level 1 | Time deposits
Financial liabilities
Deposits	0	0
Level 2
Financial assets
Cash and cash equivalents	0	0
Investment securities available for sale	267,105	290,242
Investment securities held to maturity	42,864	50,266
Loans held for sale		788
Loans receivable, net	0	0
FHLB stock	6,326	7,023
Accrued interest receivable	3,914	3,745
Mortgage servicing rights, net	0	0
Financial liabilities
Borrowings	122,085	145,892
Accrued interest payable	360	325
Level 2 | Demand deposits
Financial liabilities
Deposits	0	0
Level 2 | Time deposits
Financial liabilities
Deposits	248,645	237,841
Level 3
Financial assets
Cash and cash equivalents	0	0
Investment securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale		0
Loans receivable, net	812,418	768,181
FHLB stock	0	0
Accrued interest receivable	0	0
Mortgage servicing rights, net	1,532	1,669
Financial liabilities
Borrowings	0	0
Accrued interest payable	0	0
Level 3 | Demand deposits
Financial liabilities
Deposits	0	0
Level 3 | Time deposits
Financial liabilities
Deposits	0	0
Carrying Value
Financial assets
Cash and cash equivalents	25,334	36,801
Investment securities available for sale	267,105	290,242
Investment securities held to maturity	43,908	50,126
Loans held for sale		788
Loans receivable, net	839,458	779,111
FHLB stock	6,326	7,023
Accrued interest receivable	3,914	3,745
Mortgage servicing rights, net	1,074	1,095
Financial liabilities
Borrowings	121,526	144,100
Accrued interest payable	360	325
Carrying Value | Demand deposits
Financial liabilities
Deposits	680,449	645,779
Carrying Value | Time deposits
Financial liabilities
Deposits	251,156	239,253
Fair Value
Financial assets
Cash and cash equivalents	25,334	36,801
Investment securities available for sale	267,105	290,242
Investment securities held to maturity	42,864	50,266
Loans held for sale		788
Loans receivable, net	812,418	768,181
FHLB stock	6,326	7,023
Accrued interest receivable	3,914	3,745
Mortgage servicing rights, net	1,532	1,669
Financial liabilities
Borrowings	122,085	145,892
Accrued interest payable	360	325
Fair Value | Demand deposits
Financial liabilities
Deposits	680,449	645,779
Fair Value | Time deposits
Financial liabilities
Deposits	$ 248,645	$ 237,841

Noninterest Income (Details)

Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Other income	$ 44	$ 0	$ 241	$ 145
Total noninterest income	1,420	1,698	4,307	5,098
Loan fees
Disaggregation of Revenue [Line Items]
Revenue not within scope of ASC 606	223	174	480	344
Deposit fees
Disaggregation of Revenue [Line Items]
Noninterest income within scope of ASC 606	433	399	1,194	1,219
Debit interchange income
Disaggregation of Revenue [Line Items]
Noninterest income within scope of ASC 606	33	39	102	117
Credit card interchange income
Disaggregation of Revenue [Line Items]
Noninterest income within scope of ASC 606	456	415	1,309	1,169
Investment securities gain (loss), net
Disaggregation of Revenue [Line Items]
Revenue not within scope of ASC 606	(58)	136	77	136
Gain on loan sales, net
Disaggregation of Revenue [Line Items]
Revenue not within scope of ASC 606	139	377	456	705
Increase in cash surrender value of bank-owned life insurance
Disaggregation of Revenue [Line Items]
Revenue not within scope of ASC 606	150	158	448	495
Income from bank-owned life insurance payout
Disaggregation of Revenue [Line Items]
Revenue not within scope of ASC 606	0	0	0	768
Investment services revenue
Disaggregation of Revenue [Line Items]
Other income	20	43	177	221
Gain or loss on subsidiary
Disaggregation of Revenue [Line Items]
Other income	18	(91)	50	(131)
Remaining other income
Disaggregation of Revenue [Line Items]
Other income	$ 6	$ 48	$ 14	$ 55

Subsequent Event (Details)

Subsequent Event (Details)	Oct. 24, 2018$ / shares
Subsequent Event
Subsequent Event [Line Items]
Dividend declared per share (USD per share)	$ 0.03