MSB Financial 10-Q 31 Oct 18 2018 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document Entity Information [Abstract]
Entity Registrant Name	MSB FINANCIAL CORP
Entity Central Index Key	1,635,261
Trading Symbol	msbf
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		5,513,165
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Cash and due from banks	$ 1,254	$ 2,030
Interest-earning demand deposits with banks	20,817	20,279
Cash and Cash Equivalents	22,071	22,309
Securities held to maturity (fair value of $41,765 and $38,255, respectively)	43,009	38,482
Loans receivable, net of allowance for loan losses of $5,656 and $5,414, respectively	494,848	473,405
Premises and equipment, net	8,323	8,698
Federal Home Loan Bank of New York stock, at cost	4,117	2,131
Bank owned life insurance	14,489	14,197
Accrued interest receivable	1,734	1,607
Other assets	1,803	2,211
Total Assets	590,394	563,040
Deposits:
Non-interest bearing	45,501	36,919
Interest bearing	392,096	411,994
Total Deposits	437,597	448,913
Advances from Federal Home Loan Bank of New York	80,075	37,675
Advance payments by borrowers for taxes and insurance	704	686
Other liabilities	2,010	2,741
Total Liabilities	520,386	490,015
Stockholders' Equity
Preferred stock, par value $0.01; 1,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, par value $0.01; 49,000,000 shares authorized; 5,513,165 and 5,768,632 issued and outstanding at September 30, 2018 and December 31, 2017, respectively	55	58
Paid-in capital	46,848	51,068
Retained earnings	24,765	23,641
Unearned common stock held by ESOP (182,218 and 190,390 shares, respectively)	(1,660)	(1,742)
Total Stockholders' Equity	70,008	73,025
Total Liabilities and Stockholders' Equity	$ 590,394	$ 563,040

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 41,765	$ 38,255
Loans receivable, allowance for loan losses	$ 5,656	$ 5,414
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
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)	49,000,000	49,000,000
Common stock, share issued (in shares)	5,513,165	5,768,632
Common stock, shares outstanding (in shares)	5,513,165	5,768,632
Unallocated common stock held by ESOP, shares (in shares)	182,218	190,390

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest Income:
Loans receivable, including fees	$ 5,788	$ 4,769	$ 16,360	$ 13,213
Securities	304	264	763	762
Other	83	50	219	128
Total Interest Income	6,175	5,083	17,342	14,103
Interest Expense
Deposits	1,014	622	2,795	1,703
Borrowings	406	271	1,059	691
Total Interest Expense	1,420	893	3,854	2,394
Net Interest Income	4,755	4,190	13,488	11,709
Provision for Loan Losses	60	490	240	985
Net Interest Income after Provision for Loan Losses	4,695	3,700	13,248	10,724
Non-Interest Income
Fees and service charges	78	87	252	256
Income from bank owned life insurance	97	101	292	313
Other	15	17	58	42
Total Non-Interest Income	190	205	602	611
Non-Interest Expenses
Salaries and employee benefits	1,625	1,577	5,107	4,661
Directors compensation	121	188	365	551
Occupancy and equipment	390	394	1,172	1,217
Service bureau fees	107	67	251	164
Advertising	18	4	31	12
FDIC assessment	71	61	194	131
Professional services	528	342	1,217	1,050
Other	204	189	613	571
Total Non-Interest Expenses	3,064	2,822	8,950	8,357
Income before Income Taxes	1,821	1,083	4,900	2,978
Income Tax Expense	506	(86)	1,320	528
Net Income	$ 1,315	$ 1,169	$ 3,580	$ 2,450
Earnings per share:
Basic (in dollars per share)	$ 0.25	$ 0.21	$ 0.67	$ 0.44
Dilutive (in dollars per share)	$ 0.24	$ 0.21	$ 0.66	$ 0.44

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities:
Net Income	$ 3,580	$ 2,450
Adjustments to reconcile net income to net cash provided by operating activities:
Net accretion of securities premiums and discounts and deferred loan fees and costs	(91)	(99)
Depreciation and amortization of premises and equipment	430	413
Stock-based compensation and allocation of ESOP stock	494	474
Provision for loan losses	240	985
Income from bank owned life insurance	(292)	(313)
Increase in accrued interest receivable	(127)	(170)
Decrease (increase) in other assets	408	(448)
(Decrease) increase in other liabilities	(731)	89
Net Cash Provided by Operating Activities	3,911	3,381
Activity in held to maturity securities:
Purchases	(8,969)	(1,182)
Maturities, calls and principal repayments	4,375	4,475
Net increase in loans receivable	(50,202)	(49,333)
Purchased loans	(3,705)	(53,024)
Proceeds from sales of loans	32,382	8,252
Purchase of bank premises and equipment	(55)	(260)
Purchase of Federal Home Loan Bank of New York stock	(21,096)	(11,665)
Redemption of Federal Home Loan Bank of New York stock	19,110	9,586
Net Cash Used in Investing Activities	(28,160)	(93,151)
Cash Flows from Financing Activities:
Net (decrease) increase in deposits	(11,316)	35,211
Advances from Federal Home Loan Bank of New York	52,400	45,700
Repayment of advances from Federal Home Loan Bank of New York	(10,000)	0
Increase (decrease) in advance payments by borrowers for taxes and insurance	18	(92)
Cash dividends paid to stockholders	(2,456)	(2,451)
Net exercise of options and repurchase of shares	(36)	(1,672)
Proceeds from exercise of stock options	0	571
Repurchase of common stock	(4,599)	(108)
Net Cash Provided by Financing Activities	24,011	77,159
Net Decrease in Cash and Cash Equivalents	(238)	(12,611)
Cash and Cash Equivalents – Beginning	22,309	21,382
Cash and Cash Equivalents – Ending	22,071	8,771
Supplementary Cash Flows Information
Interest paid	3,863	2,373
Income taxes paid	$ 1,060	$ 1,016

Organization and Business

Organization and Business	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Business	Organization and Business MSB Financial Corp. (the "Company") is a Maryland-chartered corporation organized in 2014 to be the successor to MSB Financial Corp., a federal corporation ("Old MSB") upon completion of the second-step conversion of Millington Bank (the "Bank") from the two-tier mutual holding company structure to the stock holding company structure. MSB Financial, MHC (the "MHC") was the former mutual holding company for Old MSB prior to completion of the second-step conversion. In conjunction with the second-step conversion, each of the MHC and Old MSB ceased to exist. The Company's principal business is the ownership and operation of the Bank. The Bank is a New Jersey-chartered stock savings bank and its deposits are insured by the Federal Deposit Insurance Corporation. The primary business of the Bank is attracting retail deposits from the general public and using those deposits together with funds generated from operations, principal repayments on securities and loans and borrowed funds, for its lending and investing activities. The Bank's loan portfolio primarily consists of one-to-four family and home equity residential loans, commercial and multi-family real estate loans, commercial and industrial loans, and construction loans. It also invests in U.S. government obligations, corporate bonds, state and political subdivisions, certificate of deposits and mortgage-backed securities. The Bank is regulated by the New Jersey Department of Banking and Insurance and the Federal Deposit Insurance Corporation. The Board of Governors of the Federal Reserve System (the "Federal Reserve") regulates the Company as a bank holding company. The primary business of Millington Savings Service Corp (the "Service Corp"), the Bank's wholly-owned subsidiary, was the ownership and operation of a single commercial rental property. This property was sold during the year ended June 30, 2007. Currently the Service Corp is inactive.

Basis of Consolidated Financial

Basis of Consolidated Financial Statement Presentation	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Consolidated Financial Statement Presentation	Basis of Consolidated Financial Statement Presentation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, the Bank, and the Bank's wholly owned subsidiary the Service Corp. All significant intercompany accounts and transactions have been eliminated in consolidation. These consolidated financial statements were prepared in accordance with instructions for Form 10-Q and Regulation S-X, and therefore, do not include all information or notes necessary for a complete presentation of financial condition, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America ("GAAP"). In the opinion of management, all adjustments, consisting of only normal recurring adjustments or accruals, which are necessary for a fair presentation of the consolidated financial statements have been made at September 30, 2018 and for the three and nine months ended September 30, 2018 and 2017 . The results of operations for the three and nine months ended September 30, 2018 are not necessarily indicative of the results which may be expected for an entire fiscal year or other interim periods. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated statements of financial condition and revenues and expenses for the periods then ended. Actual results could differ significantly from those estimates. Recent Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-9, "Revenue from Contracts with Customers (ASU 2014-9)", which supersedes nearly all existing revenue recognition guidance under GAAP. The core principle of ASU 2014-9 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-9 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. The FASB also subsequently issued ASUs Nos. 2016-8, 2016-10, 2016-12, 2016-20 and 2017-5 to augment, amend and clarify the original pronouncement. The Company had evaluated all of its revenue streams and determined that the majority of its revenue is derived from financial instruments that are scoped out. In addition, non-interest revenue streams were evaluated, including deposit and service charges and interchange fees. The adoption of this guidance has not changed the recognition of our current revenue sources. In January 2016, the FASB issued ASU No. 2016-1, "Financial Instruments - Overall." The guidance in this ASU among other things, (1) requires equity investments with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (3) eliminates the requirement for public businesses entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (5) requires an entity to present separately in other comprehensive income the portion of the change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (7) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. The guidance in this ASU was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The adoption of this guidance effective January 1, 2018, did not have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-2, "Leases" (Topic 842). This ASU revises the method for lessee accounting. Under the new guidance, lessees will be required to recognize a right-of-use asset and a lease liability for all leases. The new lease guidance also simplified the accounting for sale and leaseback transactions primarily due to the recognition of lease assets and lease liabilities. ASU 2016-2 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. The standard is required to be adopted using the modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. We currently expect that upon adoption of ASU 2016-2, right-of-use assets and lease liabilities will be recognized in our consolidated statements of condition in amounts that will be material; however, we do not expect a material impact to our consolidated income statement. In June 2016, the FASB issued ASU No. 2016-13, "Measurement of Credit Losses on Financial Instruments." This ASU requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument. The standard is effective for public companies in annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim or annual period provided that the entire standard is adopted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements. We have taken steps to begin preparations for implementation, such as evaluating changes to our current loss recognition model and evaluating the potential use of outside professionals for an updated model.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table shows the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended (In Thousands, Except Per Share Data) 2018 2017 2018 2017 Numerator: Net income $ 1,315 $ 1,169 $ 3,580 $ 2,450 Denominator: Weighted average common shares 5,330 5,564 5,377 5,541 Dilutive potential common shares 59 11 72 4 Weighted average fully diluted shares 5,389 5,575 5,449 5,545 Earnings per share: Basic $ 0.25 $ 0.21 $ 0.67 $ 0.44 Dilutive $ 0.24 $ 0.21 $ 0.66 $ 0.44 For three and nine months ended September 30, 2018 and September 30, 2017 , there were no anti-dilutive securities.

Securities Held to Maturity

Securities Held to Maturity	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Securities Held to Maturity	Securities Held to Maturity All mortgage-backed securities at September 30, 2018 and December 31, 2017 have been issued by FNMA, FHLMC or GNMA and are secured by one-to-four family residential real estate. The amortized cost and fair value of securities held to maturity at September 30, 2018 and December 31, 2017 , as shown below, are reported in total. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The amortized cost of securities held to maturity and their fair values as of September 30, 2018 and December 31, 2017 are summarized as follows: (In Thousands) Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value September 30, 2018 U.S. Government agencies: Due within one year $ 3,500 $ — $ 14 $ 3,486 Due after one year through five years 1,000 — 16 984 Due after five through ten years 3,000 — 8 2,992 Due after ten years 3,000 — 37 2,963 Total U.S. Government agencies 10,500 — 75 10,425 Mortgage-backed securities 24,818 50 621 24,247 Corporate bonds: Due within one year — — — — Due after one year through five years 1,500 8 — 1,508 Due after five through ten years 1,000 — 76 924 Due after ten years 4,000 — 513 3,487 Total Corporate bonds 6,500 8 589 5,919 State and political subdivisions: Due within one year 150 1 1 150 Due after one through five years 678 — 9 669 Due after five through ten years 363 — 8 355 Total State and political subdivisions 1,191 1 18 1,174 Certificates of deposit: Due within one year — — — — Total Certificates of deposit — — — — Total Securities held to maturity $ 43,009 $ 59 $ 1,303 $ 41,765 (In Thousands) Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value December 31, 2017 U.S. Government agencies: Due within one year $ 3,500 $ — $ 16 $ 3,484 Due after one year through five years 2,000 — 26 1,974 Total U.S. Government Agencies 5,500 — 42 5,458 Mortgage-backed securities 23,839 263 207 23,895 Corporate bonds: Due within one year 512 3 — 515 Due after one year through five years 1,500 4 — 1,504 Due after five years through ten years 1,000 — 35 965 Due thereafter 4,000 — 209 3,791 Total Corporate bonds 7,012 7 244 6,775 State and political subdivisions: Due within one year 151 — 1 150 Due after one through five years 680 1 4 677 Due after five through ten years 365 — — 365 Total State and political subdivisions 1,196 1 5 1,192 Certificates of deposit: Due within one year 935 1 1 935 Total Certificates of deposit 935 1 1 935 Total Securities held to maturity $ 38,482 $ 272 $ 499 $ 38,255 There were no sales of securities held to maturity during the three and nine month periods ended September 30, 2018 or 2017 . At September 30, 2018 and December 31, 2017 , securities held to maturity with an amortized cost and fair value of approximately $2.0 million and $1.0 million , respectively, were pledged to secure public funds on deposit. The following tables set forth the gross unrecognized losses and fair value of securities in an unrecognized loss position as of September 30, 2018 and December 31, 2017 , and the length of time that such securities have been in an unrecognized loss position. Less than 12 Months More than 12 Months Total Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses (In Thousands) September 30, 2018 U.S. Government agencies $ 5,955 $ 46 $ 4,470 $ 29 $ 10,425 $ 75 Mortgage-backed securities 6,233 149 11,718 472 17,951 621 Corporate bonds — — 4,411 589 4,411 589 State and political subdivisions 1,024 17 150 1 1,174 18 Certificates of deposit — — — — — — Total securities with gross unrecognized losses $ 13,212 $ 212 $ 20,749 $ 1,091 $ 33,961 $ 1,303 Less than 12 Months More than 12 Months Total Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses (In Thousands) December 31, 2017 U.S. Government agencies $ 1,000 $ 1 $ 4,458 $ 41 $ 5,458 $ 42 Mortgage-backed securities 7,796 88 5,558 119 13,354 207 Corporate bonds — — 4,756 244 4,756 244 State and political subdivisions 655 5 — — 655 5 Certificates of deposit 245 1 — — 245 1 Total securities with gross unrecognized losses $ 9,696 $ 95 $ 14,772 $ 404 $ 24,468 $ 499 At September 30, 2018 , management concluded that the unrecognized losses summarized above (which related to six U.S. Government agency bonds, twenty-one mortgage-backed securities, three corporate bonds, seven state and political subdivision securities and zero certificates of deposit, compared to five U.S. Government agency bonds, thirteen mortgage-backed securities, three corporate bonds, two state and political subdivision bonds, and three certificate of deposit as of December 31, 2017) are temporary in nature since they are not related to the underlying credit quality of the issuer. As of September 30, 2018 , the Company does not intend to sell these securities and it is not more-likely-than-not that the Company would be required to sell these securities prior to the anticipated recovery of the remaining amortized cost. Management believes that the losses above are primarily related to the change in market interest rates. Accordingly, the Company has not recognized any other-than-temporary impairment loss on these securities.

Loans Receivable and Allowance

Loans Receivable and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Loans Receivable and Allowance for Credit Losses	Loans Receivable and Allowance for Credit Losses The composition of loans receivable at September 30, 2018 and December 31, 2017 was as follows: (In Thousands) September 30, 2018 December 31, 2017 Residential mortgage: One-to-four family $ 147,127 $ 157,876 Home equity 25,494 26,803 Total residential mortgages 172,621 184,679 Commercial loans: Commercial and multi-family real estate 209,283 196,681 Construction 28,788 43,718 Commercial and industrial 101,849 73,465 Total commercial loans 339,920 313,864 Consumer: 580 618 Total loans receivable 513,121 499,161 Less: Loans in process 12,142 19,868 Deferred loan fees 475 474 Allowance for loan losses 5,656 5,414 Total adjustments 18,273 25,756 Loans receivable, net $ 494,848 $ 473,405 Allowance for Loan Losses The following tables provide an analysis of the allowance for loan losses and the loan receivable recorded investments, by portfolio segment, segregated into the amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of September 30, 2018 and 2017 and loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of September 30, 2018 and December 31, 2017 : (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total Three Months Ended September 30, 2018 Allowance for loan losses: Balance, beginning $ 1,887 $ 2,469 $ 331 $ 868 $ 4 $ 37 $ 5,596 Provisions (credits) 145 (109 ) (165 ) 224 2 (37 ) 60 Loans charged-off — — — — (2 ) — (2 ) Recoveries 2 — — — — — 2 Balance, ending $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 Nine Months Ended September 30, 2018 Allowance for loan losses: Balance, beginning $ 1,852 $ 2,267 $ 302 $ 710 $ 5 $ 278 $ 5,414 Provisions (credits) 175 93 (136 ) 382 4 (278 ) 240 Loans charged-off — — — — (5 ) — (5 ) Recoveries 7 — — — — — 7 Balance, ending $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 September 30, 2018 allowance allocated to: Loans individually evaluated for impairment $ 18 $ — $ — $ — $ — $ — $ 18 Loans collectively evaluated for impairment 2,016 2,360 166 1,092 4 — 5,638 Ending Balance $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 September 30, 2018 loan balances evaluated for: Loans individually evaluated for impairment $ 11,648 $ 1,723 $ — $ 124 $ — $ — $ 13,495 Loans collectively evaluated for impairment 160,904 207,241 16,606 101,678 580 — 487,009 Ending Balance $ 172,552 $ 208,964 $ 16,606 $ 101,802 $ 580 $ — $ 500,504 (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total Three Months Ended September 30, 2017 Allowance for loan losses: Balance, beginning $ 1,812 $ 1,598 $ 315 $ 1,163 $ 9 $ 28 $ 4,925 Provisions (credits) 82 278 58 27 3 42 490 Loans charged-off (112 ) — — (29 ) — — (141 ) Recoveries 1 — — — — — 1 Balance, ending $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 Nine Months Ended September 30, 2017 Allowance for loan losses: Balance, beginning $ 1,808 $ 1,441 $ 248 $ 882 $ 6 $ 91 $ 4,476 Provisions (credits) 85 478 125 309 9 (21 ) 985 Loans charged-off (114 ) (43 ) — (30 ) (3 ) — (190 ) Recoveries 4 — — — — — 4 Balance, ending $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 September 30, 2017 allowance allocated to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 1,783 1,876 373 1,161 12 70 5,275 Ending Balance $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 September 30, 2017 loan balances evaluated for: Loans individually evaluated for impairment $ 12,535 $ 2,090 $ — $ 179 $ — $ — $ 14,804 Loans collectively evaluated for impairment 176,445 182,448 19,067 73,137 659 — 451,756 Ending Balance $ 188,980 $ 184,538 $ 19,067 $ 73,316 $ 659 $ — $ 466,560 (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total At December 31, 2017 Period-end allowance balances: Loans individually evaluated for impairment $ — $ — $ — $ 27 $ 1 $ — $ 28 Loans collectively evaluated for impairment 1,852 2,267 302 683 4 278 5,386 Ending Balance $ 1,852 $ 2,267 $ 302 $ 710 $ 5 $ 278 $ 5,414 Period-end loan balances evaluated for: Loans individually evaluated for impairment $ 12,609 $ 2,057 $ — $ 205 $ 1 $ — $ 14,872 Loans collectively evaluated for impairment 171,988 194,373 23,803 73,167 616 — 463,947 Ending Balance $ 184,597 $ 196,430 $ 23,803 $ 73,372 $ 617 $ — $ 478,819 Nonaccrual and Past Due Loans The following table represents the recorded investments in classes of the loans receivable portfolio summarized by aging categories of performing loans and nonaccrual loans as of September 30, 2018 and December 31, 2017 : (In Thousands) As of September 30, 2018 30-59 Days Past Due and Still Accruing 60-89 Days Past Due and Still Accruing Greater than 90 Days and Still Accruing Total Past Due and Still Accruing Accruing Current Balances Nonaccrual Loans Total Loans Receivables Residential Mortgage One-to-four family $ 1,959 $ 390 $ — $ 2,349 $ 142,424 $ 2,284 $ 147,057 Home equity 1,022 498 101 1,621 23,746 128 25,495 Commercial and multi-family real estate 716 — — 716 207,914 334 208,964 Construction — — — — 16,606 — 16,606 Commercial and industrial 62 215 — 277 101,525 — 101,802 Consumer 6 — — 6 574 — 580 Total $ 3,765 $ 1,103 $ 101 $ 4,969 $ 492,789 $ 2,746 $ 500,504 (In Thousands) As of December 31, 2017 30-59 Days Past Due and Still Accruing 60-89 Days Past Due and Still Accruing Greater than 90 Days and Still Accruing Total Past Due and Still Accruing Accruing Current Balances Nonaccrual Loans Total Loans Receivables Residential Mortgage One-to-four family $ 1,221 $ 700 $ — $ 1,921 $ 152,425 $ 3,446 $ 157,792 Home equity 605 16 157 778 25,912 115 26,805 Commercial and multi-family real estate — — — — 196,115 315 196,430 Construction — — — — 23,803 — 23,803 Commercial and industrial 68 — — 68 73,205 99 73,372 Consumer — 5 1 6 611 — 617 Total $ 1,894 $ 721 $ 158 $ 2,773 $ 472,071 $ 3,975 $ 478,819 Impaired Loans The following tables provide an analysis of the impaired loans at September 30, 2018 and December 31, 2017 and the average balances of such loans for the nine months and year, respectively, then ended: (In Thousands) September 30, 2018 Recorded Investment Loans with No Related Reserve Loans with Related Reserve Related Reserve Contractual Principal Balance Average Recorded Investment Residential mortgage One-to-four family $ 10,284 $ 9,956 $ 328 $ 17 $ 10,926 $ 10,434 Home equity 1,324 1,324 40 1 1,455 1,421 Commercial and multi-family real estate 1,723 1,723 — — 2,366 1,971 Construction — — — — — — Commercial and industrial 124 124 — — 3,884 179 Consumer — — — — — 1 Total $ 13,455 $ 13,127 $ 368 $ 18 $ 18,631 $ 14,006 (In Thousands) December 31, 2017 Recorded Investment Loans with No Related Reserve Loans with Related Reserve Related Reserve Contractual Principal Balance Average Recorded Investment Residential mortgage One-to-four family $ 11,181 $ 11,181 $ — $ — $ 11,729 $ 12,256 Home equity 1,428 1,428 — — 1,522 1,335 Commercial and multi-family real estate 2,057 2,057 — — 2,680 1,787 Construction — — — — — — Commercial and industrial 205 173 32 27 242 296 Consumer 1 — 1 1 1 1 Total $ 14,872 $ 14,839 $ 33 $ 28 $ 16,174 $ 15,675 As of September 30, 2018 and December 31, 2017 , impaired loans listed above included $11.5 million and $11.4 million , respectively, of loans modified in troubled debt restructurings ("TDR") and as such are considered impaired under GAAP. As of September 30, 2018 and December 31, 2017 , $10.6 million and $9.7 million , respectively, of these loans have been performing in accordance with their modified terms for an extended period of time and as such were removed from non-accrual status and considered performing. Interest income of $188,000 and $159,000 was recognized on impaired loans during the three months ended September 30, 2018 and 2017 . The average balance of impaired loans for the three months ended September 30, 2018 and September 30, 2017 was $13.7 million and $15.7 million , respectively. Interest income of $424,000 and $354,000 was recognized on impaired loans during the nine months ended September 30, 2018 and 2017 . The average balance of impaired loans for the nine months ended September 30, 2018 and September 30, 2017 was $14.0 million and $15.8 million , respectively. Credit Quality Indicators Management uses a nine point internal risk rating system to monitor the credit quality of the loans in the Company's commercial real estate, construction and commercial and industrial loan segments. The borrower's overall financial condition, repayment sources, guarantors and value of collateral, if appropriate, are evaluated annually or when credit deficiencies, such as delinquent loan payments, arise. The criticized rating categories utilized by management generally follow bank regulatory definitions. The Bank's rating categories are as follows: 1 – 5: The first five risk rating categories are considered not criticized, and are aggregated as "Pass" rated. 6: "Special Mention" category includes assets that are currently protected, but are potentially weak, resulting in increased credit risk and deserving management's close attention. If uncorrected, the potential weaknesses may result in deterioration of the repayment prospects. 7: "Substandard" loans have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt and have a distinct possibility that some loss will be sustained if the weaknesses are not corrected. This includes loans that are inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. 8: "Doubtful" loans have all the weaknesses inherent in loans classified "Substandard" with the added characteristic that collection or liquidation in full, on the basis of current conditions and facts, is highly improbable. 9: "Loss" loans are considered uncollectible and subsequently charged off. The following table presents the recorded investment in classes of the loans receivable portfolio summarized by the aggregate "Pass" and the criticized categories of "Special Mention", "Substandard", "Doubtful" and "Loss" within the internal risk rating system as of September 30, 2018 and December 31, 2017 : (In Thousands) As of September 30, 2018 Pass Special Mention Substandard Doubtful Loss Total Commercial and multi-family real estate $ 206,556 $ 1,380 $ 1,028 $ — $ — $ 208,964 Construction 16,606 — — — — 16,606 Commercial and industrial 101,425 166 211 — — 101,802 Total $ 324,587 $ 1,546 $ 1,239 $ — $ — $ 327,372 (In Thousands) As of December 31, 2017 Pass Special Mention Substandard Doubtful Loss Total Commercial and multi-family real estate $ 193,982 $ 1,415 $ 1,033 $ — $ — $ 196,430 Construction 23,803 — — — — 23,803 Commercial and industrial 72,962 182 228 — — 73,372 Total $ 290,747 $ 1,597 $ 1,261 $ — $ — $ 293,605 Management further monitors the performance and credit quality of the residential portfolio by analyzing the age of the portfolio as determined by the length of time a recorded payment is past due. These credit quality indicators are assessed in the aggregate in these relatively homogeneous portfolios. Loans greater than 90 days past due are generally considered nonperforming and placed on nonaccrual status. (In Thousands) Residential mortgage Consumer Total Residential and Consumer Sep 30, 2018 Dec 31, 2017 Sep 30, 2018 Dec 31, 2017 Sep 30, 2018 Dec 31, 2017 Nonperforming $ 2,513 $ 3,718 $ — $ 1 $ 2,513 $ 3,719 Performing 170,039 180,879 580 616 170,619 181,495 Total $ 172,552 $ 184,597 $ 580 $ 617 $ 173,132 $ 185,214 Troubled Debt Restructurings Loans, the terms of which are modified, are classified as a TDR if, in connection with the modification, the Company grants such borrowers concessions and it is deemed that those borrowers are experiencing financial difficulty. Concessions granted under a TDR generally involve a reduction in the loan's interest rate below market rates given the associated credit risk, or an extension of a loan's stated maturity date or capitalization of interest and/or escrow. Nonaccrual TDRs are restored to accrual status if principal and interest payments, under the modified terms, are current for six consecutive months after modification. Loans classified as TDRs are designated as impaired until they are ultimately repaid in full or foreclosed and sold. The nature and extent of impairment of TDRs, including those which experienced a subsequent default, is considered in the determination of an appropriate level of allowance for loan losses. The recorded investment balance of TDRs totaled $11.5 million at September 30, 2018 compared with $11.4 million at December 31, 2017 . The majority of the Company's TDRs are on accrual status. Accruing TDRs totaled $10.6 million at September 30, 2018 versus $9.7 million at December 31, 2017 . The total of TDRs on non-accrual status was $852,000 at September 30, 2018 and $1.7 million at December 31, 2017 . The Company did not modify any loans as a TDR during the three months ended September 30, 2018 and 2017. For the nine months ended September 30, 2018 , one loan was modified into one TDR. The Company refinanced a multi-family & commercial loan that was restructured to extend the maturity date and capitalize the interest. For the nine months ended September 30, 2017 , the terms of twelve loans were modified into five TDRs. The Company refinanced and consolidated a one-to-four family and one home equity mortgage loan which was restructured to an adjustable interest rate from a fixed interest rate. In addition, the Company restructured a one-to-four family loan, a home equity loan and a commercial line of credit. These loans were consolidated into one one-to-four family TDR with an extended maturity date. The Company restructured a commercial loan and a multi-family real estate loan into one TDR and extended the maturity date. The Company refinanced and consolidated a one-to-four family loan and three commercial loans into a multi-family & commercial loan with an adjustable interest rate from a fixed interest rate. In addition, the Company refinanced a one-to-four family loan and capitalized the interest. The following tables summarize by the recorded investment class loans modified into TDRs during the nine months ended September 30, 2018 and September 30, 2017 : Nine Months Ended September 30, 2018 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Commercial and multi-family real estate 1 374 392 Total 1 $ 374 $ 392 Nine Months Ended September 30, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Residential Mortgage One-to-four family 4 $ 1,019 $ 1,283 Home equity 2 99 — Commercial and multi-family real estate 1 419 661 Commercial 5 283 Total 12 $ 1,820 $ 1,944 A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. There were no loans modified in TDRs during the previous 12 months and for which there was a subsequent payment default for the three and nine months ended September 30, 2018 and 2017 . There was no Other Real Estate Owned ("OREO") at September 30, 2018 and December 31, 2017 . We may obtain physical possession of residential real estate collateralizing consumer mortgage loans via foreclosure or in-substance repossession. At September 30, 2018 and December 31, 2017 , we had consumer loans with a carrying value of $367,000 and $1.2 million , respectively, collateralized by residential real estate property for which formal foreclosure proceedings were in process.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company uses fair value measurements to record fair value adjustments to certain assets and certain liabilities and to determine fair value disclosures. FASB ASC Topic 820, Fair Market Value Disclosures ("ASC 820"), defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact. ASC 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement cost). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity's own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, ASC 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: • Level 1 Inputs – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. • Level 2 Inputs – Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means. • Level 3 Inputs – Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity's own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. An asset's or liability's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Company's valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future values. While management believes the Company's valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Assets Measured at Fair Value on a Recurring Basis The Company did not have any financial assets measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017 . Assets Measured at Fair Value on a Non-Recurring Basis Certain financial and non-financial assets are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). The following table summarizes those assets measured at fair value on a non-recurring basis as of September 30, 2018 and December 31, 2017 : As of September 30, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value (In thousands) Impaired loans $ — $ — $ 350 $ 350 As of December 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value (In thousands) Impaired loans $ — $ — $ 6 $ 6 For Level 3 assets measured at fair value on a non-recurring basis as of September 30, 2018 and December 31, 2017 , the significant unobservable inputs used in fair value measurements were as follows: As of September 30, 2018 Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (Dollars in thousands) Impaired loans $ 350 Appraisal of collateral Appraisal adjustments 0% (0%) Liquidation expense 7.3% (7.3%) As of December 31, 2017 Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (Dollars in thousands) Impaired loans $ 6 Appraisal of collateral Appraisal adjustments 475.6% (475.6%) Liquidation expense 0% (0%) A loan is measured for impairment at the time the loan is identified as impaired. Loans are considered impaired when based on current information and events it is probable that payments of interest and principal will not be made in accordance with the contractual terms of the loan agreement. The Company's impaired loans are generally collateral dependent and, as such, are carried at the lower of cost or fair value less estimated selling costs. Fair values are estimated through current appraisals and adjusted as necessary to reflect current market conditions and as such are classified as Level 3. Disclosure about Fair Value of Financial Instruments The carrying amount and fair value (represents exit price) of financial instruments, at September 30, 2018 and December 31, 2017 were as follows: Carrying Fair Level 1 Level 2 Level 3 As of September 30, 2018 Amount Value Inputs Inputs Inputs (In thousands) Financial assets: Cash and due from banks $ 22,071 $ 22,071 $ 22,071 $ — $ — Securities held to maturity 43,009 41,765 — 41,765 — Loans receivable 494,848 480,579 — — 480,579 Federal Home Loan Bank of New York stock 4,117 N/A — — — Accrued interest receivable 1,734 1,734 — 195 1,539 Financial liabilities: Deposits 437,597 438,441 — 438,441 — Advances from Federal Home Loan Bank of New York 80,075 79,358 — 79,358 — As of December 31, 2017 Financial assets: Cash and due from banks $ 22,309 $ 22,309 $ 22,309 $ — $ — Securities held to maturity 38,482 38,255 — 38,255 — Loans receivable 473,405 472,881 — — 472,881 Federal Home Loan Bank of New York stock 2,131 N/A — — — Accrued interest receivable 1,607 1,607 — 127 1,480 Financial liabilities: Deposits 448,913 450,580 — 450,580 — Advances from Federal Home Loan Bank of New York 37,675 37,400 — 37,400 — Cash and Cash Equivalents For cash and cash equivalents, the carrying amount is a reasonable estimate of fair value. Securities Held to Maturity The fair value for securities held to maturity is based on quoted market prices, where available. If quoted market prices are not available, fair value is estimated using quoted market prices for similar securities. Loans Receivable The fair value of loans is based upon a multitude of sources, including assumed current market rates by category and the Bank's current offering rates. Both fixed and variable rate loan fair values are derived at using a discounted cash flow methodology. For variable rate loans, repricing terms, including next reprice date, reprice frequency and reprice rate are factored into the discounted cash flow formula. Federal Home Loan Bank Stock The fair value of FHLB of New York stock is not applicable since the Company is generally able to redeem this stock at par. Accrued Interest Receivable and Payable The carrying amounts of accrued interest receivable and payable approximate fair value due to the short term nature of these instruments. Deposits Fair values for demand deposits, savings accounts and club accounts are, by definition, equal to the amount payable on demand at the reporting date. Fair values of fixed-maturity certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on similar instruments with similar maturities. Advances from Federal Home Loan Bank of New Yor k Fair values of advances are estimated using discounted cash flow analyses, based on rates currently available to the Company for advances from the FHLB of New York with similar terms and remaining maturities. Off-Balance Sheet Financial Instruments Fair values of commitments to extend credit are estimated using the fees currently charged to enter into similar agreement, into account market interest rates, the remaining terms, and the present credit worthiness of the counterparties. As of September 30, 2018 and December 31, 2017 , the fair value of the commitments to extend credit was not considered to be material.

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies
Consolidation Policy	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, the Bank, and the Bank's wholly owned subsidiary the Service Corp. All significant intercompany accounts and transactions have been eliminated in consolidation. These consolidated financial statements were prepared in accordance with instructions for Form 10-Q and Regulation S-X, and therefore, do not include all information or notes necessary for a complete presentation of financial condition, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America ("GAAP"). In the opinion of management, all adjustments, consisting of only normal recurring adjustments or accruals, which are necessary for a fair presentation of the consolidated financial statements have been made at September 30, 2018 and for the three and nine months ended September 30, 2018 and 2017 . The results of operations for the three and nine months ended September 30, 2018 are not necessarily indicative of the results which may be expected for an entire fiscal year or other interim periods. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated statements of financial condition and revenues and expenses for the periods then ended. Actual results could differ significantly from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the FASB issued Accounting Standards Update (ASU) No. 2014-9, "Revenue from Contracts with Customers (ASU 2014-9)", which supersedes nearly all existing revenue recognition guidance under GAAP. The core principle of ASU 2014-9 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU 2014-9 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. The FASB also subsequently issued ASUs Nos. 2016-8, 2016-10, 2016-12, 2016-20 and 2017-5 to augment, amend and clarify the original pronouncement. The Company had evaluated all of its revenue streams and determined that the majority of its revenue is derived from financial instruments that are scoped out. In addition, non-interest revenue streams were evaluated, including deposit and service charges and interchange fees. The adoption of this guidance has not changed the recognition of our current revenue sources. In January 2016, the FASB issued ASU No. 2016-1, "Financial Instruments - Overall." The guidance in this ASU among other things, (1) requires equity investments with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (3) eliminates the requirement for public businesses entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (4) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (5) requires an entity to present separately in other comprehensive income the portion of the change in fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (6) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (7) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. The guidance in this ASU was effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The adoption of this guidance effective January 1, 2018, did not have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-2, "Leases" (Topic 842). This ASU revises the method for lessee accounting. Under the new guidance, lessees will be required to recognize a right-of-use asset and a lease liability for all leases. The new lease guidance also simplified the accounting for sale and leaseback transactions primarily due to the recognition of lease assets and lease liabilities. ASU 2016-2 is effective for the first interim period within annual periods beginning after December 15, 2018, with early adoption permitted. The standard is required to be adopted using the modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. We currently expect that upon adoption of ASU 2016-2, right-of-use assets and lease liabilities will be recognized in our consolidated statements of condition in amounts that will be material; however, we do not expect a material impact to our consolidated income statement. In June 2016, the FASB issued ASU No. 2016-13, "Measurement of Credit Losses on Financial Instruments." This ASU requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument. The standard is effective for public companies in annual and interim periods in fiscal years beginning after December 15, 2019. Early adoption is permitted, including adoption in an interim or annual period provided that the entire standard is adopted. We are currently evaluating the impact of ASU 2016-13 on our consolidated financial statements. We have taken steps to begin preparations for implementation, such as evaluating changes to our current loss recognition model and evaluating the potential use of outside professionals for an updated model.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table shows the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended (In Thousands, Except Per Share Data) 2018 2017 2018 2017 Numerator: Net income $ 1,315 $ 1,169 $ 3,580 $ 2,450 Denominator: Weighted average common shares 5,330 5,564 5,377 5,541 Dilutive potential common shares 59 11 72 4 Weighted average fully diluted shares 5,389 5,575 5,449 5,545 Earnings per share: Basic $ 0.25 $ 0.21 $ 0.67 $ 0.44 Dilutive $ 0.24 $ 0.21 $ 0.66 $ 0.44

Securities Held to Maturity (Ta

Securities Held to Maturity (Tables)	9 Months Ended
	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Amortized Cost and Estimated Fair Value of HTM Securities	The amortized cost of securities held to maturity and their fair values as of September 30, 2018 and December 31, 2017 are summarized as follows: (In Thousands) Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value September 30, 2018 U.S. Government agencies: Due within one year $ 3,500 $ — $ 14 $ 3,486 Due after one year through five years 1,000 — 16 984 Due after five through ten years 3,000 — 8 2,992 Due after ten years 3,000 — 37 2,963 Total U.S. Government agencies 10,500 — 75 10,425 Mortgage-backed securities 24,818 50 621 24,247 Corporate bonds: Due within one year — — — — Due after one year through five years 1,500 8 — 1,508 Due after five through ten years 1,000 — 76 924 Due after ten years 4,000 — 513 3,487 Total Corporate bonds 6,500 8 589 5,919 State and political subdivisions: Due within one year 150 1 1 150 Due after one through five years 678 — 9 669 Due after five through ten years 363 — 8 355 Total State and political subdivisions 1,191 1 18 1,174 Certificates of deposit: Due within one year — — — — Total Certificates of deposit — — — — Total Securities held to maturity $ 43,009 $ 59 $ 1,303 $ 41,765 (In Thousands) Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value December 31, 2017 U.S. Government agencies: Due within one year $ 3,500 $ — $ 16 $ 3,484 Due after one year through five years 2,000 — 26 1,974 Total U.S. Government Agencies 5,500 — 42 5,458 Mortgage-backed securities 23,839 263 207 23,895 Corporate bonds: Due within one year 512 3 — 515 Due after one year through five years 1,500 4 — 1,504 Due after five years through ten years 1,000 — 35 965 Due thereafter 4,000 — 209 3,791 Total Corporate bonds 7,012 7 244 6,775 State and political subdivisions: Due within one year 151 — 1 150 Due after one through five years 680 1 4 677 Due after five through ten years 365 — — 365 Total State and political subdivisions 1,196 1 5 1,192 Certificates of deposit: Due within one year 935 1 1 935 Total Certificates of deposit 935 1 1 935 Total Securities held to maturity $ 38,482 $ 272 $ 499 $ 38,255
Schedule of Unrealized Loss on Investments	The following tables set forth the gross unrecognized losses and fair value of securities in an unrecognized loss position as of September 30, 2018 and December 31, 2017 , and the length of time that such securities have been in an unrecognized loss position. Less than 12 Months More than 12 Months Total Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses (In Thousands) September 30, 2018 U.S. Government agencies $ 5,955 $ 46 $ 4,470 $ 29 $ 10,425 $ 75 Mortgage-backed securities 6,233 149 11,718 472 17,951 621 Corporate bonds — — 4,411 589 4,411 589 State and political subdivisions 1,024 17 150 1 1,174 18 Certificates of deposit — — — — — — Total securities with gross unrecognized losses $ 13,212 $ 212 $ 20,749 $ 1,091 $ 33,961 $ 1,303 Less than 12 Months More than 12 Months Total Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses Fair Value Gross Unrecognized Losses (In Thousands) December 31, 2017 U.S. Government agencies $ 1,000 $ 1 $ 4,458 $ 41 $ 5,458 $ 42 Mortgage-backed securities 7,796 88 5,558 119 13,354 207 Corporate bonds — — 4,756 244 4,756 244 State and political subdivisions 655 5 — — 655 5 Certificates of deposit 245 1 — — 245 1 Total securities with gross unrecognized losses $ 9,696 $ 95 $ 14,772 $ 404 $ 24,468 $ 499

Loans Receivable and Allowanc_2

Loans Receivable and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Schedule of Loans Receivable	The composition of loans receivable at September 30, 2018 and December 31, 2017 was as follows: (In Thousands) September 30, 2018 December 31, 2017 Residential mortgage: One-to-four family $ 147,127 $ 157,876 Home equity 25,494 26,803 Total residential mortgages 172,621 184,679 Commercial loans: Commercial and multi-family real estate 209,283 196,681 Construction 28,788 43,718 Commercial and industrial 101,849 73,465 Total commercial loans 339,920 313,864 Consumer: 580 618 Total loans receivable 513,121 499,161 Less: Loans in process 12,142 19,868 Deferred loan fees 475 474 Allowance for loan losses 5,656 5,414 Total adjustments 18,273 25,756 Loans receivable, net $ 494,848 $ 473,405
Allowance for Credit Losses on Financing Receivables	The following tables provide an analysis of the allowance for loan losses and the loan receivable recorded investments, by portfolio segment, segregated into the amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of September 30, 2018 and 2017 and loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment as of September 30, 2018 and December 31, 2017 : (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total Three Months Ended September 30, 2018 Allowance for loan losses: Balance, beginning $ 1,887 $ 2,469 $ 331 $ 868 $ 4 $ 37 $ 5,596 Provisions (credits) 145 (109 ) (165 ) 224 2 (37 ) 60 Loans charged-off — — — — (2 ) — (2 ) Recoveries 2 — — — — — 2 Balance, ending $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 Nine Months Ended September 30, 2018 Allowance for loan losses: Balance, beginning $ 1,852 $ 2,267 $ 302 $ 710 $ 5 $ 278 $ 5,414 Provisions (credits) 175 93 (136 ) 382 4 (278 ) 240 Loans charged-off — — — — (5 ) — (5 ) Recoveries 7 — — — — — 7 Balance, ending $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 September 30, 2018 allowance allocated to: Loans individually evaluated for impairment $ 18 $ — $ — $ — $ — $ — $ 18 Loans collectively evaluated for impairment 2,016 2,360 166 1,092 4 — 5,638 Ending Balance $ 2,034 $ 2,360 $ 166 $ 1,092 $ 4 $ — $ 5,656 September 30, 2018 loan balances evaluated for: Loans individually evaluated for impairment $ 11,648 $ 1,723 $ — $ 124 $ — $ — $ 13,495 Loans collectively evaluated for impairment 160,904 207,241 16,606 101,678 580 — 487,009 Ending Balance $ 172,552 $ 208,964 $ 16,606 $ 101,802 $ 580 $ — $ 500,504 (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total Three Months Ended September 30, 2017 Allowance for loan losses: Balance, beginning $ 1,812 $ 1,598 $ 315 $ 1,163 $ 9 $ 28 $ 4,925 Provisions (credits) 82 278 58 27 3 42 490 Loans charged-off (112 ) — — (29 ) — — (141 ) Recoveries 1 — — — — — 1 Balance, ending $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 Nine Months Ended September 30, 2017 Allowance for loan losses: Balance, beginning $ 1,808 $ 1,441 $ 248 $ 882 $ 6 $ 91 $ 4,476 Provisions (credits) 85 478 125 309 9 (21 ) 985 Loans charged-off (114 ) (43 ) — (30 ) (3 ) — (190 ) Recoveries 4 — — — — — 4 Balance, ending $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 September 30, 2017 allowance allocated to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 1,783 1,876 373 1,161 12 70 5,275 Ending Balance $ 1,783 $ 1,876 $ 373 $ 1,161 $ 12 $ 70 $ 5,275 September 30, 2017 loan balances evaluated for: Loans individually evaluated for impairment $ 12,535 $ 2,090 $ — $ 179 $ — $ — $ 14,804 Loans collectively evaluated for impairment 176,445 182,448 19,067 73,137 659 — 451,756 Ending Balance $ 188,980 $ 184,538 $ 19,067 $ 73,316 $ 659 $ — $ 466,560 (In Thousands) Residential Mortgage Commercial and Multi-Family Real Estate Construction Commercial and Industrial Consumer Unallocated Total At December 31, 2017 Period-end allowance balances: Loans individually evaluated for impairment $ — $ — $ — $ 27 $ 1 $ — $ 28 Loans collectively evaluated for impairment 1,852 2,267 302 683 4 278 5,386 Ending Balance $ 1,852 $ 2,267 $ 302 $ 710 $ 5 $ 278 $ 5,414 Period-end loan balances evaluated for: Loans individually evaluated for impairment $ 12,609 $ 2,057 $ — $ 205 $ 1 $ — $ 14,872 Loans collectively evaluated for impairment 171,988 194,373 23,803 73,167 616 — 463,947 Ending Balance $ 184,597 $ 196,430 $ 23,803 $ 73,372 $ 617 $ — $ 478,819
Schedule of Loans Receivable, by Aging Category	The following table represents the recorded investments in classes of the loans receivable portfolio summarized by aging categories of performing loans and nonaccrual loans as of September 30, 2018 and December 31, 2017 : (In Thousands) As of September 30, 2018 30-59 Days Past Due and Still Accruing 60-89 Days Past Due and Still Accruing Greater than 90 Days and Still Accruing Total Past Due and Still Accruing Accruing Current Balances Nonaccrual Loans Total Loans Receivables Residential Mortgage One-to-four family $ 1,959 $ 390 $ — $ 2,349 $ 142,424 $ 2,284 $ 147,057 Home equity 1,022 498 101 1,621 23,746 128 25,495 Commercial and multi-family real estate 716 — — 716 207,914 334 208,964 Construction — — — — 16,606 — 16,606 Commercial and industrial 62 215 — 277 101,525 — 101,802 Consumer 6 — — 6 574 — 580 Total $ 3,765 $ 1,103 $ 101 $ 4,969 $ 492,789 $ 2,746 $ 500,504 (In Thousands) As of December 31, 2017 30-59 Days Past Due and Still Accruing 60-89 Days Past Due and Still Accruing Greater than 90 Days and Still Accruing Total Past Due and Still Accruing Accruing Current Balances Nonaccrual Loans Total Loans Receivables Residential Mortgage One-to-four family $ 1,221 $ 700 $ — $ 1,921 $ 152,425 $ 3,446 $ 157,792 Home equity 605 16 157 778 25,912 115 26,805 Commercial and multi-family real estate — — — — 196,115 315 196,430 Construction — — — — 23,803 — 23,803 Commercial and industrial 68 — — 68 73,205 99 73,372 Consumer — 5 1 6 611 — 617 Total $ 1,894 $ 721 $ 158 $ 2,773 $ 472,071 $ 3,975 $ 478,819
Schedule of Impaired Loans	The following tables provide an analysis of the impaired loans at September 30, 2018 and December 31, 2017 and the average balances of such loans for the nine months and year, respectively, then ended: (In Thousands) September 30, 2018 Recorded Investment Loans with No Related Reserve Loans with Related Reserve Related Reserve Contractual Principal Balance Average Recorded Investment Residential mortgage One-to-four family $ 10,284 $ 9,956 $ 328 $ 17 $ 10,926 $ 10,434 Home equity 1,324 1,324 40 1 1,455 1,421 Commercial and multi-family real estate 1,723 1,723 — — 2,366 1,971 Construction — — — — — — Commercial and industrial 124 124 — — 3,884 179 Consumer — — — — — 1 Total $ 13,455 $ 13,127 $ 368 $ 18 $ 18,631 $ 14,006 (In Thousands) December 31, 2017 Recorded Investment Loans with No Related Reserve Loans with Related Reserve Related Reserve Contractual Principal Balance Average Recorded Investment Residential mortgage One-to-four family $ 11,181 $ 11,181 $ — $ — $ 11,729 $ 12,256 Home equity 1,428 1,428 — — 1,522 1,335 Commercial and multi-family real estate 2,057 2,057 — — 2,680 1,787 Construction — — — — — — Commercial and industrial 205 173 32 27 242 296 Consumer 1 — 1 1 1 1 Total $ 14,872 $ 14,839 $ 33 $ 28 $ 16,174 $ 15,675
Schedule of Loans Receivable, by Internal Risk Rating	The following table presents the recorded investment in classes of the loans receivable portfolio summarized by the aggregate "Pass" and the criticized categories of "Special Mention", "Substandard", "Doubtful" and "Loss" within the internal risk rating system as of September 30, 2018 and December 31, 2017 : (In Thousands) As of September 30, 2018 Pass Special Mention Substandard Doubtful Loss Total Commercial and multi-family real estate $ 206,556 $ 1,380 $ 1,028 $ — $ — $ 208,964 Construction 16,606 — — — — 16,606 Commercial and industrial 101,425 166 211 — — 101,802 Total $ 324,587 $ 1,546 $ 1,239 $ — $ — $ 327,372 (In Thousands) As of December 31, 2017 Pass Special Mention Substandard Doubtful Loss Total Commercial and multi-family real estate $ 193,982 $ 1,415 $ 1,033 $ — $ — $ 196,430 Construction 23,803 — — — — 23,803 Commercial and industrial 72,962 182 228 — — 73,372 Total $ 290,747 $ 1,597 $ 1,261 $ — $ — $ 293,605
Schedule of Financing Receivables, Non Accrual Status	Loans greater than 90 days past due are generally considered nonperforming and placed on nonaccrual status. (In Thousands) Residential mortgage Consumer Total Residential and Consumer Sep 30, 2018 Dec 31, 2017 Sep 30, 2018 Dec 31, 2017 Sep 30, 2018 Dec 31, 2017 Nonperforming $ 2,513 $ 3,718 $ — $ 1 $ 2,513 $ 3,719 Performing 170,039 180,879 580 616 170,619 181,495 Total $ 172,552 $ 184,597 $ 580 $ 617 $ 173,132 $ 185,214
Schedule of Loans Modified into Trouble Debt Restructurings	The following tables summarize by the recorded investment class loans modified into TDRs during the nine months ended September 30, 2018 and September 30, 2017 : Nine Months Ended September 30, 2018 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Commercial and multi-family real estate 1 374 392 Total 1 $ 374 $ 392 Nine Months Ended September 30, 2017 Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments (Dollars in thousands) Residential Mortgage One-to-four family 4 $ 1,019 $ 1,283 Home equity 2 99 — Commercial and multi-family real estate 1 419 661 Commercial 5 283 Total 12 $ 1,820 $ 1,944

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value Measurements, Nonrecurring	The following table summarizes those assets measured at fair value on a non-recurring basis as of September 30, 2018 and December 31, 2017 : As of September 30, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value (In thousands) Impaired loans $ — $ — $ 350 $ 350 As of December 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value (In thousands) Impaired loans $ — $ — $ 6 $ 6
Summary of Significant Unobservable Inputs Used in Fair Value Measurements	For Level 3 assets measured at fair value on a non-recurring basis as of September 30, 2018 and December 31, 2017 , the significant unobservable inputs used in fair value measurements were as follows: As of September 30, 2018 Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (Dollars in thousands) Impaired loans $ 350 Appraisal of collateral Appraisal adjustments 0% (0%) Liquidation expense 7.3% (7.3%) As of December 31, 2017 Fair Value Valuation Techniques Unobservable Input Range (Weighted Average) (Dollars in thousands) Impaired loans $ 6 Appraisal of collateral Appraisal adjustments 475.6% (475.6%) Liquidation expense 0% (0%)
Schedule of Fair Value, by Balance Sheet Grouping	The carrying amount and fair value (represents exit price) of financial instruments, at September 30, 2018 and December 31, 2017 were as follows: Carrying Fair Level 1 Level 2 Level 3 As of September 30, 2018 Amount Value Inputs Inputs Inputs (In thousands) Financial assets: Cash and due from banks $ 22,071 $ 22,071 $ 22,071 $ — $ — Securities held to maturity 43,009 41,765 — 41,765 — Loans receivable 494,848 480,579 — — 480,579 Federal Home Loan Bank of New York stock 4,117 N/A — — — Accrued interest receivable 1,734 1,734 — 195 1,539 Financial liabilities: Deposits 437,597 438,441 — 438,441 — Advances from Federal Home Loan Bank of New York 80,075 79,358 — 79,358 — As of December 31, 2017 Financial assets: Cash and due from banks $ 22,309 $ 22,309 $ 22,309 $ — $ — Securities held to maturity 38,482 38,255 — 38,255 — Loans receivable 473,405 472,881 — — 472,881 Federal Home Loan Bank of New York stock 2,131 N/A — — — Accrued interest receivable 1,607 1,607 — 127 1,480 Financial liabilities: Deposits 448,913 450,580 — 450,580 — Advances from Federal Home Loan Bank of New York 37,675 37,400 — 37,400 —

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted 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
Numerator:
Net income	$ 1,315	$ 1,169	$ 3,580	$ 2,450
Denominator:
Weighted average common shares (in shares)	5,330,000	5,564,000	5,377,000	5,541,000
Dilutive potential common shares (in shares)	59,000	11,000	72,000	4,000
Weighted average fully diluted shares (in shares)	5,389,000	5,575,000	5,449,000	5,545,000
Earnings per share:
Basic (in dollars per share)	$ 0.25	$ 0.21	$ 0.67	$ 0.44
Dilutive (in dollars per share)	$ 0.24	$ 0.21	$ 0.66	$ 0.44
Anti-dilutive securities (in shares)	0	0	0	0

Securities Held to Maturity - H

Securities Held to Maturity - Held-to-maturity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost	$ 43,009	$ 38,482
Gross unrecognized gains	59	272
Gross unrecognized losses	1,303	499
Estimated fair value	41,765	38,255
U.S. Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, due within one year	3,500	3,500
Gross unrecognized gains, due within one year	0	0
Gross unrecognized losses, due within one year	14	16
Estimated fair value, due within one year	3,486	3,484
Amortized cost, due after one year to five years	1,000	2,000
Gross unrecognized gains, due after one year to five years	0	0
Gross unrecognized losses, due after one year to five years	16	26
Estimated fair value, due after one year to five years	984	1,974
Amortized cost, due after five through ten years	3,000
Gross unrecognized gains, due after five through ten years	0
Gross unrecognized losses, due after five through ten years	8
Estimated fair value, due after five through ten years	2,992
Amortized cost, due after ten years	3,000
Gross unrecognized gains, due after ten years	0
Gross unrecognized losses, due after ten years	37
Estimated fair value, due after ten years	2,963
Amortized cost	10,500	5,500
Gross unrecognized gains	0	0
Gross unrecognized losses	75	42
Estimated fair value	10,425	5,458
Mortgage-backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, without single maturity date	24,818	23,839
Gross unrecognized gains, without single maturity date	50	263
Gross unrecognized losses, without single maturity date	621	207
Estimated fair value, without single maturity date	24,247	23,895
Corporate Bonds
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, due within one year	0	512
Gross unrecognized gains, due within one year	0	3
Gross unrecognized losses, due within one year	0	0
Estimated fair value, due within one year	0	515
Amortized cost, due after one year to five years	1,500	1,500
Gross unrecognized gains, due after one year to five years	8	4
Gross unrecognized losses, due after one year to five years	0	0
Estimated fair value, due after one year to five years	1,508	1,504
Amortized cost, due after five through ten years	1,000	1,000
Gross unrecognized gains, due after five through ten years	0	0
Gross unrecognized losses, due after five through ten years	76	35
Estimated fair value, due after five through ten years	924	965
Amortized cost, due after ten years	4,000	4,000
Gross unrecognized gains, due after ten years	0	0
Gross unrecognized losses, due after ten years	513	209
Estimated fair value, due after ten years	3,487	3,791
Amortized cost	6,500	7,012
Gross unrecognized gains	8	7
Gross unrecognized losses	589	244
Estimated fair value	5,919	6,775
State and Political Subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, due within one year	150	151
Gross unrecognized gains, due within one year	1	0
Gross unrecognized losses, due within one year	1	1
Estimated fair value, due within one year	150	150
Amortized cost, due after one year to five years	678	680
Gross unrecognized gains, due after one year to five years	0	1
Gross unrecognized losses, due after one year to five years	9	4
Estimated fair value, due after one year to five years	669	677
Amortized cost, due after five through ten years	363	365
Gross unrecognized gains, due after five through ten years	0	0
Gross unrecognized losses, due after five through ten years	8	0
Estimated fair value, due after five through ten years	355	365
Amortized cost	1,191	1,196
Gross unrecognized gains	1	1
Gross unrecognized losses	18	5
Estimated fair value	1,174	1,192
Certificates of Deposit
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, due within one year	0
Gross unrecognized gains, due within one year	0
Gross unrecognized losses, due within one year	0
Estimated fair value, due within one year	0
Amortized cost	0
Gross unrecognized gains	0
Gross unrecognized losses	0
Estimated fair value	$ 0
Certificates of Deposit
Schedule of Held-to-maturity Securities [Line Items]
Amortized cost, due within one year		935
Gross unrecognized gains, due within one year		1
Gross unrecognized losses, due within one year		1
Estimated fair value, due within one year		935
Amortized cost		935
Gross unrecognized gains		1
Gross unrecognized losses		1
Estimated fair value		$ 935

Securities Held to Maturity (De

Securities Held to Maturity (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)bondcertificate_of_depositsecurity	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)bondcertificate_of_depositsecurity	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)bondcertificate_of_depositsecurity
Schedule of Held-to-maturity Securities [Line Items]
Sale of HTM securities	$ 0	$ 0	$ 0	$ 0
HTM securities pledged as collateral	$ 2,000,000		2,000,000		$ 1,000,000
OTTI loss recognized on HTM securities			$ 0
Certificates of Deposit
Schedule of Held-to-maturity Securities [Line Items]
Number of HTM securities in an unrealized loss position | certificate_of_deposit	0		0		3
U.S. Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Number of HTM securities in an unrealized loss position | bond	6		6		5
Mortgage-backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Number of HTM securities in an unrealized loss position | security	21		21		13
Corporate Bonds
Schedule of Held-to-maturity Securities [Line Items]
Number of HTM securities in an unrealized loss position | bond	3		3		3
State and Political Subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Number of HTM securities in an unrealized loss position	7		7		2

Securities Held to Maturity -_2

Securities Held to Maturity - Held-to-maturity Securities in Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	$ 13,212	$ 9,696
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	212	95
Securities in an unrealized loss position, more than 12 months, fair value	20,749	14,772
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	1,091	404
Securities in an unrealized loss position, fair value	33,961	24,468
Securities in an unrealized loss position, gross unrealized losses	1,303	499
Certificates of Deposit
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	0	245
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	0	1
Securities in an unrealized loss position, more than 12 months, fair value	0	0
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	0	0
Securities in an unrealized loss position, fair value	0	245
Securities in an unrealized loss position, gross unrealized losses	0	1
U.S. Government Agencies
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	5,955	1,000
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	46	1
Securities in an unrealized loss position, more than 12 months, fair value	4,470	4,458
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	29	41
Securities in an unrealized loss position, fair value	10,425	5,458
Securities in an unrealized loss position, gross unrealized losses	75	42
Mortgage-backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	6,233	7,796
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	149	88
Securities in an unrealized loss position, more than 12 months, fair value	11,718	5,558
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	472	119
Securities in an unrealized loss position, fair value	17,951	13,354
Securities in an unrealized loss position, gross unrealized losses	621	207
Corporate Bonds
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	0	0
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	0	0
Securities in an unrealized loss position, more than 12 months, fair value	4,411	4,756
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	589	244
Securities in an unrealized loss position, fair value	4,411	4,756
Securities in an unrealized loss position, gross unrealized losses	589	244
State and Political Subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Securities in an unrealized loss position, less than 12 months, fair value	1,024	655
Securities in an unrealized loss position, less than 12 months, gross unrealized losses	17	5
Securities in an unrealized loss position, more than 12 months, fair value	150	0
Securities in an unrealized loss position, more than 12 months, gross unrealized losses	1	0
Securities in an unrealized loss position, fair value	1,174	655
Securities in an unrealized loss position, gross unrealized losses	$ 18	$ 5

Loans Receivable and Allowanc_3

Loans Receivable and Allowance for Credit Losses - Composition of Total Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	$ 513,121	$ 499,161
Loans in process	12,142	19,868
Deferred loan fees	475	474
Allowance for loan losses	5,656	5,414
Total adjustments	18,273	25,756
Loans receivable, net	494,848	473,405
Residential Mortgage
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	172,621	184,679
Residential Mortgage | One-to-Four Family
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	147,127	157,876
Residential Mortgage | Home Equity Loan
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	25,494	26,803
Commercial and Multi-Family Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	209,283	196,681
Construction
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	28,788	43,718
Commercial and Industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	101,849	73,465
Total Commercial Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	339,920	313,864
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable, gross	$ 580	$ 618

Loans Receivable and Allowanc_4

Loans Receivable and Allowance for Credit Losses - 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	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	$ 5,596	$ 4,925	$ 5,414	$ 4,476
Provisions (credits)	60	490	240	985
Loans charged-off	(2)	(141)	(5)	(190)
Recoveries	2	1	7	4
Balance, ending	5,656	5,275	5,656	5,275
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	18	0	18	0	$ 28
Period-end allowance allocated to loans collectively evaluated for impairment	5,638	5,275	5,638	5,275	5,386
Period-end loan balances evaluated for loans individually evaluated for impairment	13,495	14,804	13,495	14,804	14,872
Period-end loan balances evaluated for loans collectively evaluated for impairment	487,009	451,756	487,009	451,756	463,947
Total loans receivables	500,504	466,560	500,504	466,560	478,819
Residential Mortgage
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	1,887	1,812	1,852	1,808
Provisions (credits)	145	82	175	85
Loans charged-off	0	(112)	0	(114)
Recoveries	2	1	7	4
Balance, ending	2,034	1,783	2,034	1,783
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	18	0	18	0	0
Period-end allowance allocated to loans collectively evaluated for impairment	2,016	1,783	2,016	1,783	1,852
Period-end loan balances evaluated for loans individually evaluated for impairment	11,648	12,535	11,648	12,535	12,609
Period-end loan balances evaluated for loans collectively evaluated for impairment	160,904	176,445	160,904	176,445	171,988
Total loans receivables	172,552	188,980	172,552	188,980	184,597
Commercial and Multi-Family Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	2,469	1,598	2,267	1,441
Provisions (credits)	(109)	278	93	478
Loans charged-off	0	0	0	(43)
Recoveries	0	0	0	0
Balance, ending	2,360	1,876	2,360	1,876
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	0	0	0	0	0
Period-end allowance allocated to loans collectively evaluated for impairment	2,360	1,876	2,360	1,876	2,267
Period-end loan balances evaluated for loans individually evaluated for impairment	1,723	2,090	1,723	2,090	2,057
Period-end loan balances evaluated for loans collectively evaluated for impairment	207,241	182,448	207,241	182,448	194,373
Total loans receivables	208,964	184,538	208,964	184,538	196,430
Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	331	315	302	248
Provisions (credits)	(165)	58	(136)	125
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Balance, ending	166	373	166	373
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	0	0	0	0	0
Period-end allowance allocated to loans collectively evaluated for impairment	166	373	166	373	302
Period-end loan balances evaluated for loans individually evaluated for impairment	0	0	0	0	0
Period-end loan balances evaluated for loans collectively evaluated for impairment	16,606	19,067	16,606	19,067	23,803
Total loans receivables	16,606	19,067	16,606	19,067	23,803
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	868	1,163	710	882
Provisions (credits)	224	27	382	309
Loans charged-off	0	(29)	0	(30)
Recoveries	0	0	0	0
Balance, ending	1,092	1,161	1,092	1,161
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	0	0	0	0	27
Period-end allowance allocated to loans collectively evaluated for impairment	1,092	1,161	1,092	1,161	683
Period-end loan balances evaluated for loans individually evaluated for impairment	124	179	124	179	205
Period-end loan balances evaluated for loans collectively evaluated for impairment	101,678	73,137	101,678	73,137	73,167
Total loans receivables	101,802	73,316	101,802	73,316	73,372
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	4	9	5	6
Provisions (credits)	2	3	4	9
Loans charged-off	(2)	0	(5)	(3)
Recoveries	0	0	0	0
Balance, ending	4	12	4	12
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	0	0	0	0	1
Period-end allowance allocated to loans collectively evaluated for impairment	4	12	4	12	4
Period-end loan balances evaluated for loans individually evaluated for impairment	0	0	0	0	1
Period-end loan balances evaluated for loans collectively evaluated for impairment	580	659	580	659	616
Total loans receivables	580	659	580	659	617
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning	37	28	278	91
Provisions (credits)	(37)	42	(278)	(21)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Balance, ending	0	70	0	70
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Period-end allowance allocated to loans individually evaluated for impairment	0	0	0	0	0
Period-end allowance allocated to loans collectively evaluated for impairment	0	70	0	70	278
Period-end loan balances evaluated for loans individually evaluated for impairment	0	0	0	0	0
Period-end loan balances evaluated for loans collectively evaluated for impairment	0	0	0	0	0
Total loans receivables	$ 0	$ 0	$ 0	$ 0	$ 0

Loans Receivable and Allowanc_5

Loans Receivable and Allowance for Credit Losses - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	$ 4,969	$ 2,773
Accruing current balances	492,789	472,071
Nonaccrual loans	2,746	3,975
Total loans receivables	500,504	478,819	$ 466,560
30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	3,765	1,894
60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	1,103	721
Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	101	158
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivables	172,552	184,597	188,980
Residential Mortgage | One-to-Four Family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	2,349	1,921
Accruing current balances	142,424	152,425
Nonaccrual loans	2,284	3,446
Total loans receivables	147,057	157,792
Residential Mortgage | One-to-Four Family | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	1,959	1,221
Residential Mortgage | One-to-Four Family | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	390	700
Residential Mortgage | One-to-Four Family | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Residential Mortgage | Home Equity Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	1,621	778
Accruing current balances	23,746	25,912
Nonaccrual loans	128	115
Total loans receivables	25,495	26,805
Residential Mortgage | Home Equity Loan | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	1,022	605
Residential Mortgage | Home Equity Loan | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	498	16
Residential Mortgage | Home Equity Loan | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	101	157
Commercial and Multi-Family Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	716	0
Accruing current balances	207,914	196,115
Nonaccrual loans	334	315
Total loans receivables	208,964	196,430	184,538
Commercial and Multi-Family Real Estate | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	716	0
Commercial and Multi-Family Real Estate | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Commercial and Multi-Family Real Estate | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Accruing current balances	16,606	23,803
Nonaccrual loans	0	0
Total loans receivables	16,606	23,803	19,067
Construction | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Construction | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Construction | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	277	68
Accruing current balances	101,525	73,205
Nonaccrual loans	0	99
Total loans receivables	101,802	73,372	73,316
Commercial and Industrial | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	62	68
Commercial and Industrial | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	215	0
Commercial and Industrial | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	6	6
Accruing current balances	574	611
Nonaccrual loans	0	0
Total loans receivables	580	617	$ 659
Consumer | 30-59 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	6	0
Consumer | 60-89 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	0	5
Consumer | Greater than 90 Days and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, past due	$ 0	$ 1

Loans Receivable and Allowanc_6

Loans Receivable and Allowance for Credit Losses - Impaired Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 13,455		$ 13,455		$ 14,872
Loans with no related reserve	13,127		13,127		14,839
Loans with related reserve	368		368		33
Related reserve	18		18		28
Contractual principal balance	18,631		18,631		16,174
Troubled debt restructuring loans	11,500		11,500		11,400
Interest income on impaired loans	188	$ 159	424	$ 354
Average recorded investment	13,700	$ 15,700	14,006	$ 15,800	15,675
Residential Mortgage | One-to-Four Family
Financing Receivable, Impaired [Line Items]
Recorded investment	10,284		10,284		11,181
Loans with no related reserve	9,956		9,956		11,181
Loans with related reserve	328		328		0
Related reserve	17		17		0
Contractual principal balance	10,926		10,926		11,729
Average recorded investment			10,434		12,256
Residential Mortgage | Home Equity Loan
Financing Receivable, Impaired [Line Items]
Recorded investment	1,324		1,324		1,428
Loans with no related reserve	1,324		1,324		1,428
Loans with related reserve	40		40		0
Related reserve	1		1		0
Contractual principal balance	1,455		1,455		1,522
Average recorded investment			1,421		1,335
Commercial and Multi-Family Real Estate
Financing Receivable, Impaired [Line Items]
Recorded investment	1,723		1,723		2,057
Loans with no related reserve	1,723		1,723		2,057
Loans with related reserve	0		0		0
Related reserve	0		0		0
Contractual principal balance	2,366		2,366		2,680
Average recorded investment			1,971		1,787
Construction
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0		0
Loans with no related reserve	0		0		0
Loans with related reserve	0		0		0
Related reserve	0		0		0
Contractual principal balance	0		0		0
Average recorded investment			0		0
Commercial and Industrial
Financing Receivable, Impaired [Line Items]
Recorded investment	124		124		205
Loans with no related reserve	124		124		173
Loans with related reserve	0		0		32
Related reserve	0		0		27
Contractual principal balance	3,884		3,884		242
Average recorded investment			179		296
Consumer
Financing Receivable, Impaired [Line Items]
Recorded investment	0		0		1
Loans with no related reserve	0		0		0
Loans with related reserve	0		0		1
Related reserve	0		0		1
Contractual principal balance	0		0		1
Average recorded investment			1		1
Performing
Financing Receivable, Impaired [Line Items]
Troubled debt restructuring loans	$ 10,600		$ 10,600		$ 9,700

Loans Receivable and Allowanc_7

Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 327,372	$ 293,605
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	324,587	290,747
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,546	1,597
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,239	1,261
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Multi-Family Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	208,964	196,430
Commercial and Multi-Family Real Estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	206,556	193,982
Commercial and Multi-Family Real Estate | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,380	1,415
Commercial and Multi-Family Real Estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,028	1,033
Commercial and Multi-Family Real Estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Multi-Family Real Estate | Loss
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,606	23,803
Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,606	23,803
Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Construction | Loss
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	101,802	73,372
Commercial and Industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	101,425	72,962
Commercial and Industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	166	182
Commercial and Industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	211	228
Commercial and Industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial and Industrial | Loss
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Loans Receivable and Allowanc_8

Loans Receivable and Allowance for Credit Losses - Impaired Financing Receivable Performance Status (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Impaired [Line Items]
Total loans	$ 500,504	$ 478,819	$ 466,560
Residential Mortgage
Financing Receivable, Impaired [Line Items]
Total loans	172,552	184,597	188,980
Consumer
Financing Receivable, Impaired [Line Items]
Total loans	580	617	$ 659
Total Residential and Consumer
Financing Receivable, Impaired [Line Items]
Total loans	173,132	185,214
Nonperforming | Residential Mortgage
Financing Receivable, Impaired [Line Items]
Total loans	2,513	3,718
Nonperforming | Consumer
Financing Receivable, Impaired [Line Items]
Total loans	0	1
Nonperforming | Total Residential and Consumer
Financing Receivable, Impaired [Line Items]
Total loans	2,513	3,719
Performing | Residential Mortgage
Financing Receivable, Impaired [Line Items]
Total loans	170,039	180,879
Performing | Consumer
Financing Receivable, Impaired [Line Items]
Total loans	580	616
Performing | Total Residential and Consumer
Financing Receivable, Impaired [Line Items]
Total loans	$ 170,619	$ 181,495

Loans Receivable and Allowanc_9

Loans Receivable and Allowance for Credit Losses - Troubled Debt Restructurings (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)contractloan	Sep. 30, 2017contractloan	Sep. 30, 2018USD ($)contract	Sep. 30, 2018USD ($)	Sep. 30, 2018USD ($)loan	Sep. 30, 2017contract	Sep. 30, 2017USD ($)	Sep. 30, 2017loan	Dec. 31, 2017USD ($)
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans	$ 11,500,000		$ 11,500,000	$ 11,500,000	$ 11,500,000				$ 11,400,000
Number of contracts	0	0	1		1	12		12
Number of troubled debt restructurings into which loans were modified | loan					1			5
Pre-modification outstanding recorded investments				374,000			$ 1,820,000
Post-modification outstanding recorded investments				392,000			1,944,000
Loans modified in TDRs during period of subsequent payment default | loan	0	0			0			0
OREO properties	$ 0		$ 0	0	$ 0				0
Carrying value of loans collateralized by residential real estate property with foreclosure proceedings	367,000		$ 367,000	367,000	367,000				1,200,000
Residential Mortgage | One-to-Four Family
Financing Receivable, Modifications [Line Items]
Number of contracts | contract						4
Pre-modification outstanding recorded investments							1,019,000
Post-modification outstanding recorded investments							1,283,000
Residential Mortgage | One-to-Four Family | Extended Maturity
Financing Receivable, Modifications [Line Items]
Number of contracts | loan								1
Residential Mortgage | Home Equity Loan
Financing Receivable, Modifications [Line Items]
Number of contracts | contract						2
Pre-modification outstanding recorded investments							99,000
Post-modification outstanding recorded investments							0
Residential Mortgage | Home Equity Loan | Fixed Interest Rate to Adjustable Interest Rate
Financing Receivable, Modifications [Line Items]
Number of contracts | loan								1
Commercial and Multi-Family Real Estate
Financing Receivable, Modifications [Line Items]
Number of contracts | contract			1			1
Pre-modification outstanding recorded investments				374,000			419,000
Post-modification outstanding recorded investments				392,000			661,000
Commercial and Multi-Family Real Estate | Extended Maturity
Financing Receivable, Modifications [Line Items]
Number of troubled debt restructurings into which loans were modified | loan								1
Commercial Portfolio Segment
Financing Receivable, Modifications [Line Items]
Number of contracts | contract						5
Pre-modification outstanding recorded investments							283,000
Post-modification outstanding recorded investments
Commercial Portfolio Segment | Fixed Interest Rate to Adjustable Interest Rate
Financing Receivable, Modifications [Line Items]
Number of contracts | loan								3
Nonperforming
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans	852,000		$ 852,000	852,000	852,000				1,700,000
Performing
Financing Receivable, Modifications [Line Items]
Troubled debt restructuring loans	$ 10,600,000		$ 10,600,000	$ 10,600,000	$ 10,600,000				$ 9,700,000

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Assets Measured on Nonrecurring Basis (Details) - Fair Value Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 350	$ 6
Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 350	$ 6

Fair Value Measurements - Addit

Fair Value Measurements - Additional Qualitative Information About Level 3 Assets (Details) - Fair Value, Inputs, Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Appraisal Adjustments
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value estimate	$ 350	$ 6
Range	0.00%
Appraisal Adjustments | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	0.00%	475.60%
Liquidation Expenses
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	7.30%
Liquidation Expenses | Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	7.30%	0.00%

Fair Value Measurements - Fai_2

Fair Value Measurements - Fair Value, Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Cash and due from banks	$ 22,071	$ 22,309	$ 8,771	$ 21,382
Securities held to maturity	41,765	38,255
Federal Home Loan Bank of New York stock, at cost	4,117	2,131
Accrued interest receivable	1,734	1,607
Financial liabilities:
Deposits	437,597	448,913
Advances from Federal Home Loan Bank of New York	80,075	37,675
Carrying Amount
Financial assets:
Cash and due from banks	22,071	22,309
Securities held to maturity	43,009	38,482
Loans receivable	494,848	473,405
Federal Home Loan Bank of New York stock, at cost	4,117	2,131
Accrued interest receivable	1,734	1,607
Financial liabilities:
Deposits	437,597	448,913
Advances from Federal Home Loan Bank of New York	80,075	37,675
Fair Value
Financial assets:
Cash and due from banks	22,071	22,309
Securities held to maturity	41,765	38,255
Loans receivable	480,579	472,881
Accrued interest receivable	1,734	1,607
Financial liabilities:
Deposits	438,441	450,580
Advances from Federal Home Loan Bank of New York	79,358	37,400
Fair Value | Level 1 Inputs
Financial assets:
Cash and due from banks	22,071	22,309
Securities held to maturity	0	0
Loans receivable	0	0
Federal Home Loan Bank of New York stock, at cost		0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Advances from Federal Home Loan Bank of New York	0	0
Fair Value | Level 2 Inputs
Financial assets:
Securities held to maturity	41,765	38,255
Loans receivable	0	0
Accrued interest receivable	195	127
Financial liabilities:
Deposits	438,441	450,580
Advances from Federal Home Loan Bank of New York	79,358	37,400
Fair Value | Level 3 Inputs
Financial assets:
Securities held to maturity	0	0
Loans receivable	480,579	472,881
Accrued interest receivable	1,539	1,480
Financial liabilities:
Deposits	0	0
Advances from Federal Home Loan Bank of New York	$ 0	$ 0