BankFinancial (BFIN) 10-Q 30 Oct 19 2019 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 28, 2019
Document and Entity Information [Abstract]
Entity Current Reporting Status	Yes
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Entity Registrant Name	BankFinancial CORP
Entity Central Index Key	0001303942
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding		15,373,964
Entity Shell Company	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from other financial institutions	$ 13,074	$ 13,805
Interest-bearing deposits in other financial institutions	127,719	84,399
Cash and cash equivalents	140,793	98,204
Securities, at fair value	65,440	88,179
Loans receivable, net of allowance for loan losses: September 30, 2019, $7,824 and December 31, 2018, $8,470	1,213,948	1,323,793
Other real estate owned, net	269	1,226
Stock in Federal Home Loan Bank (FHLB) and Federal Reserve Bank (FRB), at cost	7,490	8,026
Premises and equipment, net	24,598	25,205
Accrued interest receivable	4,763	4,952
Bank-owned life insurance	18,914	18,809
Deferred taxes	4,556	6,235
Other assets	11,211	10,696
Total assets	1,491,982	1,585,325
Deposits
Noninterest-bearing	208,347	230,041
Interest-bearing	1,080,478	1,122,443
Total deposits	1,288,825	1,352,484
Borrowings	1,253	21,049
Advance payments by borrowers for taxes and insurance	10,802	10,531
Accrued interest payable and other liabilities	17,235	14,111
Total liabilities	1,318,115	1,398,175
Commitments and contingent liabilities
Stockholders’ equity
Preferred Stock, $0.01 par value, 25,000,000 shares authorized, none issued or outstanding	0	0
Common Stock, $0.01 par value, 100,000,000 shares authorized; 15,373,964 shares issued at September 30, 2019 and 16,481,514 issued at December 31, 2018	154	165
Additional paid-in capital	113,717	130,547
Retained earnings	59,718	56,167
Accumulated other comprehensive income	278	271
Total stockholders’ equity	173,867	187,150
Total liabilities and stockholders’ equity	$ 1,491,982	$ 1,585,325

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 7,603	$ 8,470
Preferred Stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized	25,000,000	25,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value (usd per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	15,373,964	16,481,514

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income
Loans, including fees	$ 15,371	$ 14,248	$ 46,112	$ 42,045
Securities	508	627	1,712	1,637
Other	749	498	1,852	1,459
Total interest income	16,628	15,373	49,676	45,141
Interest expense
Deposits	3,385	2,278	10,023	5,632
Borrowings	1	130	89	542
Borrowings	3,386	2,408	10,112	6,174
Net interest income	13,242	12,965	39,564	38,967
Provision for (recovery of) loan losses	134	23	(3,736)	258
Net interest income after provision for (recovery of) loan losses	13,376	12,988	35,828	39,225
Noninterest income
Income from product and service	983	1,003	2,887	2,970
Loan servicing fees	99	71	178	231
Mortgage brokerage and banking fees	28	46	77	226
Gain (loss) on sale of equity securities	0	0	295	(14)
Loss on disposal of other assets	0	0	0	93
Gain (Loss) on Disposition of Other Assets	0	0	(19)	0
Trust and insurance commissions and annuities income	198	207	627	670
Earnings on bank-owned life insurance	(37)	(35)	(105)	(146)
Bank-owned life insurance death benefit	0	0	0	1,389
Other	129	208	374	492
Total noninterest income	1,474	1,570	4,524	6,203
Noninterest expense
Compensation and benefits	5,218	5,120	16,128	16,232
Office occupancy and equipment	1,877	1,629	5,343	5,022
Advertising and public relations	182	194	488	611
Information technology	716	717	2,144	2,066
Supplies, telephone, and postage	310	341	1,028	1,070
Amortization of intangibles	13	20	47	163
Nonperforming asset management	17	60	129	313
Operations of other real estate owned, net	19	59	22	355
FDIC insurance premiums	(127)	115	127	338
Other	1,284	1,170	3,623	3,429
Total noninterest expense	9,509	9,425	29,079	29,599
Income before income taxes	5,341	5,133	11,273	15,829
Income tax expense	1,417	1,396	2,991	3,903
Net income	$ 3,924	$ 3,737	$ 8,282	$ 11,926
Basic earnings per common share (usd per share)	$ 0.26	$ 0.22	$ 0.53	$ 0.68
Diluted earnings per common share (usd per share)	$ 0.26	$ 0.22	$ 0.53	$ 0.68
Weighted average common shares outstanding (shares)	15,373,964	17,365,679	15,679,927	17,641,308
Diluted weighted average common shares outstanding (shares)	15,373,964	17,365,679	15,679,927	17,641,308

Consolidated Statements Compreh

Consolidated Statements Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income	$ 3,924	$ 3,737	$ 8,282	$ 11,926
Unrealized holding gain (loss) arising during the period	(16)	(49)	9	(173)
Tax effect	5	14	(2)	47
Net of tax	(11)	(35)	7	(126)
Comprehensive income	3,913	3,702	8,289	11,800
Retained Earnings [Member]
Net income	$ 3,924	$ 3,737	$ 8,282	$ 11,926

Consolidated Statements of Chan

Consolidated Statements of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2017	$ 197,634	$ 179	$ 153,811	$ 43,274	$ 370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,926			11,926
Other comprehensive loss, net of tax					(126)
Repurchase and retirement of common stock	(12,594)	(7)	(12,587)
Cash dividends declared on common stock				(4,763)
Ending Balance at Sep. 30, 2018	192,083	172	141,230	50,437	244
Beginning Balance at Jun. 30, 2018	194,228	175	145,331	48,443	279
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,737			3,737
Other comprehensive loss, net of tax					(35)
Repurchase and retirement of common stock	(4,104)	(3)	(4,101)
Cash dividends declared on common stock	(1,743)			(1,743)
Ending Balance at Sep. 30, 2018	192,083	172	141,230	50,437	244
Beginning Balance at Dec. 31, 2018	187,150	165	130,547	56,167	271
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,282			8,282
Other comprehensive loss, net of tax					7
Repurchase and retirement of common stock	(16,841)	(11)	(16,830)
Cash dividends declared on common stock				(4,731)
Ending Balance at Sep. 30, 2019	173,867	154	113,717	59,718	278
Beginning Balance at Jun. 30, 2019	171,491	154	113,717	57,331	289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,924			3,924
Other comprehensive loss, net of tax					(11)
Cash dividends declared on common stock	(1,537)			(1,537)
Ending Balance at Sep. 30, 2019	$ 173,867	$ 154	$ 113,717	$ 59,718	$ 278

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended				9 Months Ended
	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock (in dollars per share)	$ 0.10	$ 0.10	$ 0.09	$ 0.08	$ 0.30	$ 0.27
Repurchase and retirement of common stock (in shares)	270,535	837,015	415,889	81,500	1,107,550	752,174

Consolidated Statements of Cash

Consolidated Statements of Cash Flow - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Cash Flows [Abstract]
Proceeds from Sale of Property Held-for-sale	$ 0	$ 5,485
Proceeds from Sale of Federal Home Loan Bank Stock	540	285
Payments for (Proceeds from) Federal Home Loan Bank Stock	0	4,224
Cash flows from operating activities
Net income	8,282	11,926
Adjustments to reconcile to net income to net cash from operating activities
Provision for (recovery of) loan losses	(3,736)	258
Share-based Compensation	0	6
Depreciation and amortization	2,525	2,513
Amortization of premiums and discounts on securities and loans	4	9
Amortization of core deposit intangible	47	163
Amortization of servicing assets	63	79
Net change in net deferred loan origination costs	127	53
(Gain) loss on sale of other real estate owned	(112)	56
(Gain) loss on sale of equity securities	(295)	14
Gain (Loss) on Disposition of Other Assets	19	0
Loss on disposal of other assets	0	(93)
Other real estate owned valuation adjustments	38	27
Net change in:
Accrued interest receivable	189	(355)
Earnings on bank owned life insurance	(105)	(146)
Other assets	3,065	3,540
Accrued interest payable and other liabilities	(3,570)	(3,076)
Net cash from operating activities	14,013	14,458
Securities
Proceeds from maturities	79,210	76,164
Proceeds from principal repayments	2,234	2,970
Proceeds from sale of equity securities	3,722	487
Purchases of securities	(58,700)	(90,355)
Loans receivable
Principal payments on loans receivable	710,551	729,474
Originated for investment	(604,705)	(683,685)
Proceeds from sale of other real estate owned	1,107	2,172
Purchase of premises and equipment, net	(623)	(512)
Net cash from investing activities	133,332	46,688
Payments to Acquire Federal Home Loan Bank Stock	4	21
Cash flows from financing activities
Net change in deposits	(63,659)	(44,281)
Net change in borrowings	(19,796)	(39,536)
Net change in advance payments by borrowers for taxes and insurance	271	(630)
Payments for Repurchase of Common Stock	(16,841)	(12,594)
Payments of Ordinary Dividends, Common Stock	(4,731)	(4,763)
Net cash used in financing activities	(104,756)	(101,804)
Net change in cash and cash equivalents	42,589	(40,658)
Beginning cash and cash equivalents	98,204	127,592
Ending cash and cash equivalents	140,793	86,934
Supplemental disclosures of cash flow information:
Interest paid	10,295	5,960
Income taxes paid	412	250
Loans transferred to other real estate owned	76	1,241
Gross carrying amount	6,694
Recording of right of use asset in exchange for lease obligations	$ 6,058	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation : BankFinancial Corporation, a Maryland corporation headquartered in Burr Ridge, Illinois, is the owner of all of the issued and outstanding capital stock of BankFinancial, NA (the “Bank”). The interim unaudited consolidated financial statements include the accounts and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BFIN Asset Recovery Company, LLC (collectively, “the Company”), and reflect all normal and recurring adjustments that are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. Such adjustments are the only adjustments reflected in the accompanying financial statements. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three and nine month periods ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2019 or for any other period. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. Use of Estimates : To prepare financial statements in conformity with U.S. GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ. Lease Accounting: The Company adopted FASB issued ASU No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), including the adoption of the practical expedients, effective January 1, 2019. Lessees are required to recognize assets and liabilities on the balance sheet for leases with lease terms greater than 12 months. The Company recorded assets and liabilities of $6.7 million as a result of recording additional lease contracts where the Company is lessee. The Company did not restate comparative periods. The right of use assets are included in other assets and the lease obligations are included in other liabilities in the accompanying consolidated statements of financial condition. Other Intangible Assets : Intangible assets acquired in a purchase business combination with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Core deposit intangible assets (“CDI”), are recognized at the time of acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, variables such as deposit servicing costs, attrition rates, and market discount rates are considered. CDI assets are amortized to expense over their useful lives. CDI were $55,000 and $102,000 at September 30, 2019 and December 31, 2018 , respectively, and are included in other assets in the accompanying consolidated statements of financial condition. Reclassifications : Certain reclassifications have been made in the prior period’s financial statements to conform them to the current period’s presentation. These unaudited consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 , as filed with the Securities and Exchange Commission. Newly Issued Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for SEC filers or fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 ( i.e. , January 1, 2020, for calendar year entities). In October 2019, the FASB moved to defer the effective date of ASU No. 2016-13 for smaller reporting companies, as defined by the SEC, and other non-SEC reporting entities. The proposal would delay the effective date to fiscal years beginning after December 15, 2022, including interim periods within those fiscal periods. As the Company is a smaller reporting company, the proposed delay would be applicable to the Company, if it is approved by the FASB. The FASB is expected to finalize a revised ASU in mid-November.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Amounts reported in earnings per share reflect earnings available to common stockholders for the period divided by the weighted average number of shares of common stock outstanding during the period, exclusive of unvested restricted stock shares. Stock options and restricted stock are regarded as potential common stock and are considered in the diluted earnings per share calculations to the extent that they would have a dilutive effect if converted to common stock. Three Months Ended Nine Months Ended 2019 2018 2019 2018 Net income available to common stockholders $ 3,924 $ 3,737 $ 8,282 $ 11,926 Average common shares outstanding 15,373,964 17,365,679 15,679,927 17,641,743 Less - Unvested restricted stock shares — — — (435 ) Basic and diluted weighted average common shares outstanding 15,373,964 17,365,679 15,679,927 17,641,308 Basic and diluted earnings per common share $ 0.26 $ 0.22 $ 0.53 $ 0.68

Securities (Notes)

Securities (Notes)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
SECURITIES	The fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income are shown below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-Sale Securities September 30, 2019 Certificates of deposit $ 52,996 $ — $ — $ 52,996 Municipal securities 506 7 — 513 Mortgage-backed securities - residential 8,402 378 — 8,780 Collateralized mortgage obligations - residential 3,156 4 (9 ) 3,151 $ 65,060 $ 389 $ (9 ) $ 65,440 December 31, 2018 Certificates of deposit $ 73,507 $ — $ — $ 73,507 Municipal securities 509 — — 509 Mortgage-backed securities - residential 10,116 400 (38 ) 10,478 Collateralized mortgage obligations - residential 3,676 11 (2 ) 3,685 $ 87,808 $ 411 $ (40 ) $ 88,179 The mortgage-backed securities and collateralized mortgage obligations reflected in the preceding table were issued by U.S. government-sponsored entities or agencies, Freddie Mac, Fannie Mae and Ginnie Mae, and are obligations which the government has affirmed its commitment to support. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Equity Investments (1) December 31, 2018 Visa Class B shares $ — $ 3,427 $ — $ 3,427 (1) Equity investments are included in Other assets in the Consolidated Statements of Financial Condition. The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. 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. September 30, 2019 Amortized Cost Fair Value Due in one year or less $ 52,996 $ 52,996 Due after one year through five years 506 513 53,502 53,509 Mortgage-backed securities - residential 8,402 8,780 Collateralized mortgage obligations - residential 3,156 3,151 $ 65,060 $ 65,440 Investment securities available-for-sale with carrying values of $2.2 million and $2.7 million at September 30, 2019 and December 31, 2018 , respectively, were pledged as collateral on customer repurchase agreements and for other purposes as required or permitted by law. Sales of equity securities were as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Proceeds $ — $ — $ 3,722 $ 487 Gross gains — — 295 — Gross losses — — — (14 ) Securities with unrealized losses not recognized in income are as follows: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss September 30, 2019 Collateralized mortgage obligations - residential $ 1,663 $ (6 ) $ 976 $ (3 ) $ 2,639 $ (9 ) December 31, 2018 Mortgage-backed securities - residential $ — $ — $ 904 $ (38 ) $ 904 $ (38 ) Collateralized mortgage obligations - residential — — 1,729 (2 ) 1,729 (2 ) $ — $ — $ 2,633 $ (40 ) $ 2,633 $ (40 ) The Company evaluates marketable investment securities with significant declines in fair value on a quarterly basis to determine whether they should be considered other-than-temporarily impaired under current accounting guidance, which generally provides that if a marketable security is in an unrealized loss position, whether due to general market conditions or industry or issuer-specific factors, the holder of the securities must assess whether the impairment is other-than-temporary. Certain collateralized mortgage obligations that the Company holds in its investment portfolio were in an unrealized loss position at September 30, 2019 , but the unrealized losses were not considered significant under the Company’s impairment testing methodology. In addition, the Company does not intend to sell these securities, and it is likely that the Company will not be required to sell these securities before their anticipated recovery occurs. The Bank, as a member of Visa USA, received 51,404 unrestricted shares of Visa, Inc. Class B common stock in connection with Visa, Inc.’s initial public offering in 2007 and a related retroactive responsibility plan. The retroactive responsibility plan obligates all former Visa USA members to indemnify Visa USA, in proportion to their equity interests in Visa USA, for certain litigation losses and expenses, including settlement expenses, for the lawsuits covered by the retrospective responsibility plan. Due to the restrictions that the retrospective responsibility plan imposes on the Company’s Visa, Inc. Class B shares, the Company had not recorded the Class B shares as an asset. The Bank sold 25,702 shares of Visa Class B common stock in the fourth quarter of 2018 and recorded a gain of $3.6 million . For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. Based on the existing transfer restriction and the uncertainty of the outcome of the Visa litigation mentioned above, the 25,702 Visa Class B shares that the Company owned as of December 31, 2018 were recorded at $3.4 million in other assets with a corresponding gain. The Bank sold the remaining 25,702 shares of Visa Class B common stock in the first quarter of 2019 and recorded a gain of $295,000 .

Loans Receivable (Notes)

Loans Receivable (Notes)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans Receivable	Loans receivable are as follows: September 30, 2019 December 31, 2018 One-to-four family residential real estate $ 60,757 $ 70,371 Multi-family mortgage 577,656 619,870 Nonresidential real estate 140,410 152,442 Construction and land 88 172 Commercial loans 163,846 187,406 Commercial leases 275,800 299,394 Consumer 2,052 1,539 1,220,609 1,331,194 Net deferred loan origination costs 942 1,069 Allowance for loan losses (7,603 ) (8,470 ) Loans, net $ 1,213,948 $ 1,323,793 The following tables present the balance in the allowance for loan losses and loans receivable by portfolio segment and based on impairment method: Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total September 30, 2019 One-to-four family residential real estate $ — $ 580 $ 580 $ 2,416 $ 58,341 $ 60,757 Multi-family mortgage — 3,728 3,728 630 577,026 577,656 Nonresidential real estate — 1,217 1,217 282 140,128 140,410 Construction and land — 2 2 — 88 88 Commercial loans — 1,308 1,308 — 163,846 163,846 Commercial leases — 732 732 — 275,800 275,800 Consumer — 36 36 — 2,052 2,052 $ — $ 7,603 $ 7,603 $ 3,328 $ 1,217,281 1,220,609 Net deferred loan origination costs 942 Allowance for loan losses (7,603 ) Loans, net $ 1,213,948 Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total December 31, 2018 One-to-four family residential real estate $ — $ 699 $ 699 $ 2,218 $ 68,153 $ 70,371 Multi-family mortgage — 3,991 3,991 653 619,217 619,870 Nonresidential real estate 27 1,449 1,476 270 152,172 152,442 Construction and land — 4 4 — 172 172 Commercial loans — 1,517 1,517 — 187,406 187,406 Commercial leases — 755 755 — 299,394 299,394 Consumer — 28 28 — 1,539 1,539 $ 27 $ 8,443 $ 8,470 $ 3,141 $ 1,328,053 1,331,194 Net deferred loan origination costs 1,069 Allowance for loan losses (8,470 ) Loans, net $ 1,323,793 Activity in the allowance for loan losses is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Beginning balance $ 7,824 $ 8,179 $ 8,470 $ 8,366 Loans charged off: One-to-four family residential real estate (44 ) (84 ) (117 ) (214 ) Multi-family mortgage — — — (35 ) Nonresidential real estate (55 ) — (83 ) — Commercial loans — — (4,443 ) (140 ) Consumer (5 ) (6 ) (20 ) (7 ) (104 ) (90 ) (4,663 ) (396 ) Recoveries: One-to-four family residential real estate 5 25 28 130 Multi-family mortgage 8 8 24 26 Construction and land — 2 — 2 Commercial loans 4 2 8 227 Commercial leases — — — 5 Consumer — — — 1 17 37 60 391 Net charge-offs (87 ) (53 ) (4,603 ) (5 ) Provision for (recovery of) loan losses (134 ) (23 ) 3,736 (258 ) Ending balance $ 7,603 $ 8,103 $ 7,603 $ 8,103 Impaired loans Several of the following disclosures are presented by “recorded investment,” which the FASB defines as “the amount of the investment in a loan, which is not net of a valuation allowance, but which does reflect any direct write-down of the investment.” The following represents the components of recorded investment: Loan principal balance Less unapplied payments Plus negative unapplied balance Less escrow balance Plus negative escrow balance Plus unamortized net deferred loan costs Less unamortized net deferred loan fees Plus unamortized premium Less unamortized discount Less previous charge-offs Plus recorded accrued interest Less reserve for uncollected interest = Recorded investment The following tables present loans individually evaluated for impairment by class of loans: Three months ended Nine months ended Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized September 30, 2019 With no related allowance recorded: One-to-four family residential real estate $ 2,812 $ 2,280 $ 542 $ — $ 2,253 $ 12 $ 2,245 $ 40 One-to-four family residential real estate - non-owner occupied 136 136 — — 161 — 102 1 Multi-family mortgage - Illinois 629 630 — — 633 9 642 28 Nonresidential real estate 280 282 — — 1,447 — 679 1 $ 3,857 $ 3,328 $ 542 $ — $ 4,494 $ 21 $ 3,668 $ 70 Year ended December 31, 2018 Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized December 31, 2018 With no related allowance recorded: One-to-four family residential real estate $ 2,751 $ 2,155 $ 575 $ — $ 3,274 $ 41 One-to-four family residential real estate - non-owner occupied 86 46 43 — 95 — Multi-family mortgage - Illinois 654 653 — — 795 39 3,491 2,854 $ 618 — 4,164 80 With an allowance recorded - Nonresidential real estate 356 270 93 27 21 — $ 3,847 $ 3,124 $ 711 $ 27 $ 4,185 $ 80 Nonaccrual Loans The following tables present the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans: Loan Balance Recorded Investment Loans Past Due Over 90 Days, Still Accruing September 30, 2019 One-to-four family residential real estate $ 1,460 $ 1,160 $ — Nonresidential real estate 280 282 — $ 1,740 $ 1,442 $ — December 31, 2018 One-to-four family residential real estate $ 2,167 $ 1,162 $ — One-to-four family residential real estate – non-owner occupied 270 78 — Nonresidential real estate 356 270 — $ 2,793 $ 1,510 $ — Nonaccrual loans and impaired loans are defined differently. Some loans may be included in both categories, and some loans may only be included in one category. Nonaccrual loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. The Company’s reserve for uncollected loan interest was $120,000 and $72,000 at September 30, 2019 and December 31, 2018 , respectively. When a loan is on nonaccrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable. Past Due Loans The following tables present the aging of the recorded investment of loans at September 30, 2019 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 3 $ 255 $ 1,017 $ 1,275 $ 47,989 $ 49,264 Non-owner occupied 4 269 137 410 11,062 11,472 Multi-family mortgage: Illinois — — — — 256,662 256,662 Other — — — — 314,698 314,698 Nonresidential real estate — — 282 282 138,884 139,166 Construction and land — — — — 80 80 Commercial loans: Regional commercial banking — — — — 28,193 28,193 Health care — — — — 75,454 75,454 Direct commercial lessor — — — — 60,664 60,664 Commercial leases: Investment rated commercial leases 197 14 — 211 133,697 133,908 Other commercial leases 1,710 — — 1,710 141,877 143,587 Consumer 6 3 — 9 2,060 2,069 $ 1,920 $ 541 $ 1,436 $ 3,897 $ 1,211,320 $ 1,215,217 The following tables present the aging of the recorded investment of loans at December 31, 2018 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 1,380 $ 637 $ 1,162 $ 3,179 $ 53,820 $ 56,999 Non-owner occupied 387 10 78 475 12,460 12,935 Multi-family mortgage: Illinois 458 — — 458 275,283 275,741 Other — — — — 340,470 340,470 Nonresidential real estate — 270 — 270 149,271 149,541 Construction and land — — — — 169 169 Commercial loans: Regional commercial banking — — — — 39,712 39,712 Health care — — — — 85,418 85,418 Direct commercial lessor — — — — 62,719 62,719 Commercial leases: Investment rated commercial leases 505 — — 505 166,713 167,218 Other commercial leases — — — — 133,958 133,958 Consumer 40 4 — 44 1,508 1,552 $ 2,770 $ 921 $ 1,240 $ 4,931 $ 1,321,501 $ 1,326,432 Troubled Debt Restructurings The Company evaluates loan extensions or modifications in accordance with FASB ASC 310–40 with respect to the classification of the loan as a Troubled Debt Restructuring ("TDR"). In general, if the Company grants a loan extension or modification to a borrower experiencing financial difficulties for other than an insignificant period of time that includes a below–market interest rate, principal forgiveness, payment forbearance or other concession intended to minimize the economic loss to the Company, the loan extension or loan modification is classified as a TDR. In cases where borrowers are granted new terms that provide for a reduction of either interest or principal then due and payable, management measures any impairment on the restructured loan in the same manner as for impaired loans as noted above. The Company had $17,000 of TDRs at September 30, 2019 and December 31, 2018 . No specific valuation reserves were allocated to those loans at September 30, 2019 and December 31, 2018 . The Company had no outstanding commitments to borrowers whose loans were classified as TDRs at either date. The following table presents loans classified as TDRs: September 30, 2019 December 31, 2018 One-to-four family residential real estate - nonaccrual $ 17 $ 17 During the nine months ended September 30, 2019 and 2018 , there were no loans modified and classified as TDRs. During the nine months ended September 30, 2019 and 2018 , there were no TDR loans that subsequently defaulted within twelve months of their modification. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. To determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. This evaluation is performed under the Company’s internal underwriting policy. Credit Quality Indicators The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, including current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans based on credit risk. This analysis includes non-homogeneous loans, such as commercial and commercial real estate loans. This analysis is performed on a monthly basis. The Company uses the following definitions for risk ratings: Special Mention. A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. Substandard. Loans categorized as Substandard continue to accrue interest, but exhibit a well-defined weakness or weaknesses that may jeopardize the liquidation of the debt. The loans continue to accrue interest because they are well secured and collection of principal and interest is expected within a reasonable time. The risk rating guidance published by the Office of the Comptroller of the Currency clarifies that a loan with a well-defined weakness does not have to present a probability of default for the loan to be rated Substandard, and that an individual loan’s loss potential does not have to be distinct for the loan to be rated Substandard. Nonaccrual. An asset classified Nonaccrual has all the weaknesses inherent in one classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered “Pass” rated loans. As of September 30, 2019 , the risk categories of loans by class of loans are as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 47,584 $ 401 $ 541 $ 799 $ 49,325 Non-owner occupied 11,230 30 36 136 11,432 Multi-family mortgage: Illinois 257,690 — 211 — 257,901 Other 319,344 411 — — 319,755 Nonresidential real estate 140,033 — 93 284 140,410 Construction and land 88 — — — 88 Commercial loans: Regional commercial banking 28,094 — — — 28,094 Health care 74,767 595 — — 75,362 Direct commercial lessor 60,390 — — — 60,390 Commercial leases: Investment rated commercial leases 132,493 556 — — 133,049 Other commercial leases 141,187 1,564 — — 142,751 Consumer 2,045 4 3 — 2,052 $ 1,214,945 $ 3,561 $ 884 $ 1,219 $ 1,220,609 As of December 31, 2018 , the risk categories of loans by class of loans are as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans Owner occupied $ 55,353 $ 495 $ 328 $ 993 $ 57,169 Non-owner occupied 12,911 — 37 254 13,202 Multi-family mortgage: Illinois 279,021 — 216 — 279,237 Other 340,633 — — — 340,633 Nonresidential real estate 151,793 281 98 270 152,442 Construction and land 172 — — — 172 Commercial loans: Regional commercial banking 34,764 4,810 — — 39,574 Health care 85,001 — 342 — 85,343 Direct commercial lessor 62,489 — — — 62,489 Commercial leases: Investment rated commercial leases 165,508 701 — — 166,209 Other commercial leases 133,185 — — — 133,185 Consumer 1,529 3 7 — 1,539 $ 1,322,359 $ 6,290 $ 1,028 $ 1,517 $ 1,331,194

Other Real Estate Owned (Notes)

Other Real Estate Owned (Notes)	9 Months Ended
	Sep. 30, 2019
Other Real Estate [Abstract]
Real Estate Owned [Text Block]	R eal estate that is acquired through foreclosure or a deed in lieu of foreclosure is classified as other real estate owned ("OREO") until it is sold. When real estate is acquired through foreclosure or by deed in lieu of foreclosure, it is recorded at its fair value, less the estimated costs of disposal. If the fair value of the property is less than the loan balance, the difference is charged against the allowance for loan losses. September 30, 2019 December 31, 2018 Balance Valuation Allowance Net OREO Balance Balance Valuation Allowance Net OREO Balance One–to–four family residential $ 307 $ (38 ) $ 269 $ 875 $ — $ 875 Multi-family mortgage — — — 276 — 276 Nonresidential real estate — — — 74 — 74 Land — — — 24 (23 ) 1 $ 307 $ (38 ) $ 269 $ 1,249 $ (23 ) $ 1,226 The following represents the roll forward of OREO and the composition of OREO properties: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 497 $ 1,187 $ 1,226 $ 2,351 New foreclosed properties 30 403 76 1,241 Valuation adjustments (17 ) (1 ) (38 ) (27 ) Sales and payments (241 ) (604 ) (995 ) (2,580 ) Ending balance $ 269 $ 985 $ 269 $ 985 Activity in the valuation allowance is as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 21 $ 44 $ 23 $ 305 Additions charged to expense 17 1 38 27 Reductions from sales of OREO — (22 ) (23 ) (309 ) Ending balance $ 38 $ 23 $ 38 $ 23 At September 30, 2019 and December 31, 2018 , the balance of OREO included no foreclosed residential real estate properties recorded as a result of obtaining physical possession of the property without title. At September 30, 2019 and December 31, 2018 , the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $617,000 and $349,000 , respectively.

LEASES (Notes)

LEASES (Notes)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
LEASES	Statement of Financial Condition Location September 30, 2019 Operating Lease Right of Use Asset: Gross carrying amount $ 6,694 Accumulated amortization (636 ) Net book value Other assets $ 6,058 Operating Lease Liabilities: Right of use lease obligations Other liabilities $ 6,058 At September 30, 2019 , the weighted-average remaining lease term for the operating leases was 9.2 years and the weighted-average discount rate used in the measurement of operating lease liabilities was 3.16% . The Company utilized the FHLB fixed rate advance rate as of January 1, 2019 for the term most closely aligning with the remaining lease term. For the Three Months Ended September 30, 2019 For the Nine Months Ended September 30, 2019 Lease cost: Operating lease cost $ 212 $ 636 Short-term lease cost 26 86 Sublease income (17 ) (32 ) Total lease cost $ 221 $ 690 Other information: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 225 $ 674 Future minimum payments under non-cancellable operating leases with terms longer than 12 months, are as follows at September 30, 2019 : Twelve months ended September 30, 2020 $ 901 2021 920 2022 953 2023 987 2024 582 Thereafter 2,849 Total future minimum operating lease payments 7,192 Amounts representing interest (1,134 ) Present value of net future minimum operating lease payments $ 6,058

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase (Notes)	9 Months Ended
	Sep. 30, 2019
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Securities Sold Under Agreements to Repurchase	Securities sold under agreements to repurchase, included with borrowings on the consolidated balance sheet, are shown below. Overnight and Continuous Up to 30 days 30 - 90 days Greater Than 90 days Total September 30, 2019 Repurchase agreements and repurchase-to-maturity transactions $ 1,253 $ — $ — $ — $ 1,253 Gross amount of recognized liabilities for repurchase agreements in Consolidated Statements of Financial Condition $ 1,253 December 31, 2018 Repurchase agreements and repurchase-to-maturity transactions $ 1,049 $ — $ — $ — $ 1,049 Gross amount of recognized liabilities for repurchase agreements in Consolidated Statements of Financial Condition $ 1,049 Securities sold under agreements to repurchase were secured by mortgage-backed securities with carrying amounts of $2.2 million and $2.7 million at September 30, 2019 and December 31, 2018 , respectively. Because security values fluctuate due to market conditions, the Company has no control over the market value of securities sold under agreements to repurchase. The Company is contractually obligated to promptly transfer additional securities to the counterparty if the market value of the securities falls below the repurchase price. Also included in total borrowings were fixed-rate advances, due within a year, from the FHLB of $20.0 million at December 31, 2018 . There were no outstanding FHLB borrowings at September 30, 2019 .

Fair Value (Notes)

Fair Value (Notes)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: • Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2 – Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3 – Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Securities : The fair values of debt securities are generally determined by matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities, but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2). Other investments : Other investments includes our investments in equity securities without readily determinable fair values. Equity investments without readily determinable fair values, includes our Visa Class B shares, which are categorized as Level 3. Our Visa Class B ownership includes shares acquired at no cost from our prior participation in Visa’s network while Visa operated as a cooperative. Impaired loans: The fair value of impaired loans with specific allocations of the allowance for loan losses is generally based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available for similar loans and collateral underlying such loans. Non-real estate collateral may be valued using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 fair value classification. Impaired loans are evaluated on a quarterly basis for additional impairment and adjusted in accordance with the allowance policy. Other real estate owned: Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. Fair value is commonly based on recent real estate appraisals which are updated no less frequently than annually. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach with data from comparable properties. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Real estate owned properties are evaluated on a quarterly basis for additional impairment and adjusted accordingly. The following table sets forth the Company’s financial assets that were accounted for at fair value and are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value September 30, 2019 Securities: Certificates of deposit $ — $ 52,996 $ — $ 52,996 Municipal securities — 513 — 513 Mortgage-backed securities – residential — 8,780 — 8,780 Collateralized mortgage obligations – residential — 3,151 — 3,151 $ — $ 65,440 $ — $ 65,440 December 31, 2018 Securities: Certificates of deposit $ — $ 73,507 $ — $ 73,507 Municipal securities — 509 — 509 Mortgage-backed securities - residential — 10,478 — 10,478 Collateralized mortgage obligations – residential — 3,685 — 3,685 $ — $ 88,179 $ — $ 88,179 The following table sets forth the Company’s assets that were measured at fair value on a non-recurring basis: Fair Value Measurement Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value September 30, 2019 Other real estate owned - One-to-four family residential real estate $ — $ — $ 193 $ 193 December 31, 2018 Impaired loans - Nonresidential real estate $ — $ — $ 243 $ 243 Other real estate owned - Land $ — $ — $ 1 $ 1 Other investments (1) $ — $ — $ 3,427 $ 3,427 (1) See Note 1 for additional disclosures resulting from Company's adoption of ASU 2016-01. At September 30, 2019 there were no impaired loans that were measured for impairment using the fair value of the collateral for collateral–dependent loans and which had specific valuation allowances. At December 31, 2018 there was one nonresidential impaired loan with a carrying value of $270,000 and a valuation allowance of $27,000 that was measured for impairment using the fair value of the collateral for collateral–dependent loans and which had a specific valuation allowance. OREO carried at the lower of cost or fair value less costs to sell, had a carrying value of $231,000 less a valuation allowance of $38,000 , or $193,000 at September 30, 2019 , compared to a carrying value of $24,000 less a valuation allowance of $23,000 , or $1,000 at December 31, 2018 . There were $38,000 of valuation adjustments of OREO recorded for the nine months ended September 30, 2019 , compared to $27,000 of valuation adjustments of OREO recorded for the nine months ended September 30, 2018 . The following table presents quantitative information, based on certain empirical data with respect to Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at September 30, 2019 and December 31, 2018 : Fair Value Valuation Significant Unobservable Range September 30, 2019 Other real estate owned - One-to-four family residential real estate $ 193 Sales comparison Discount applied to valuation 16.0% December 31, 2018 Other real estate owned - Land $ 1 Sales comparison Discount applied to valuation 12.3% The carrying amount and estimated fair value of financial instruments are as follows: Fair Value Measurements at September 30, 2019 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 140,793 $ 13,074 $ 127,719 $ — $ 140,793 Securities 65,440 — 65,440 — 65,440 Loans receivable, net of allowance for loan losses 1,213,948 — — 1,222,391 1,222,391 FHLB and FRB stock 7,490 — — — N/A Accrued interest receivable 4,763 — 294 4,469 4,763 Financial liabilities Certificates of deposit 419,273 — 420,287 — 420,287 Borrowings 1,253 — 1,253 — 1,253 Fair Value Measurements at December 31, 2018 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 98,204 $ 13,805 $ 84,399 $ — $ 98,204 Securities 88,179 — 88,179 — 88,179 Loans receivable, net of allowance for loan losses 1,323,793 — — 1,315,855 1,315,855 FHLB and FRB stock 8,026 — — — N/A Accrued interest receivable 4,952 — 249 4,703 4,952 Financial liabilities Certificates of deposit 438,328 — 436,598 — 436,598 Borrowings 21,049 — 21,050 — 21,050 Loans : The exit price observations are obtained from an independent third-party using its proprietary valuation model and methodology and may not reflect actual or prospective market valuations. The valuation is based on the probability of default, loss given default, recovery delay, prepayment, and discount rate assumptions. While the above estimates are based on management’s judgment of the most appropriate factors, as of the balance sheet date, there is no assurance that the estimated fair values would have been realized if the assets were disposed of or the liabilities settled at that date, since market values may differ depending on the various circumstances. The estimated fair values would also not apply to subsequent dates. In addition, other assets and liabilities that are not financial instruments, such as premises and equipment, are not included in the above disclosures.

Revenue From Contracts With Cus

Revenue From Contracts With Customers	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue From Contracts With Customers	All of the Company's revenue from contracts with customers within the scope of ASC 606 is recognized within noninterest income. The following table presents the Company's sources of noninterest income. Items outside of the scope of the ASC 606 are noted as such. Three Months Ended Nine Months Ended 2019 2018 2019 2018 Deposit service charges and fees $ 983 $ 1,003 $ 2,887 $ 2,970 Loan servicing fees (1) 99 71 178 231 Mortgage brokerage and banking fees (1) 28 46 77 226 Gain (loss) on sale of equity securities (1) — — 295 (14 ) Loss on disposal of other assets — — (19 ) — Gain on sale of premises held-for-sale — — — 93 Trust and insurance commissions and annuities income 198 207 627 670 Earnings on bank-owned life insurance (1) 37 35 105 146 Bank-owned life insurance death benefit (1) — — — 1,389 Other (1) 129 208 374 492 Total noninterest income $ 1,474 $ 1,570 $ 4,524 $ 6,203 (1) Not within the scope of ASC 606 A description of the Company's revenue streams accounted for under ASC 606 follows: Deposit service charges and fees: The Company earns fees from its deposit customers based on specific types of transactions, account maintenance and overdraft services. Transaction-based fees, which include services such as ATM use fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Company fulfills the customer's request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer's account balance. Interchange income: The Company earns interchange fees from debit cardholder transactions conducted through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. Interchange income is included in deposit service charges and fees. Interchange income was $1.2 million and $1.1 million for the nine months ended September 30, 2019 and 2018 . Interchange income was $395,000 and $382,000 for the three months ended September 30, 2019 and 2018 . Gain on sale of premises held-for-sale: On April 23, 2018, the Bank sold its office building located in Burr Ridge, Illinois. The sale was to an unrelated party and title was transferred at closing. As such, the transaction constituted a sale and a net gain was recorded in the second quarter of 2018. Trust and insurance commissions and annuities income: The Company earns trust, insurance commissions and annuities income from its contracts with trust customers to manage assets for investment, and/or to transact on their accounts. These fees are primarily earned over time as the Company provides the contracted monthly or quarterly services and are generally assessed based on a tiered scale of the market value of assets under management (AUM) at month-end. Fees that are transaction based, including trade execution services, are recognized at the point in time that the transaction is executed, i.e ., the trade date. Other related services provided include fees the Company earns, which are based on a fixed fee schedule, are recognized when the services are rendered.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation : BankFinancial Corporation, a Maryland corporation headquartered in Burr Ridge, Illinois, is the owner of all of the issued and outstanding capital stock of BankFinancial, NA (the “Bank”). The interim unaudited consolidated financial statements include the accounts and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BFIN Asset Recovery Company, LLC (collectively, “the Company”), and reflect all normal and recurring adjustments that are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. Such adjustments are the only adjustments reflected in the accompanying financial statements. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three and nine month periods ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2019 or for any other period. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. Use of Estimates : To prepare financial statements in conformity with U.S. GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ. Lease Accounting: The Company adopted FASB issued ASU No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), including the adoption of the practical expedients, effective January 1, 2019. Lessees are required to recognize assets and liabilities on the balance sheet for leases with lease terms greater than 12 months. The Company recorded assets and liabilities of $6.7 million as a result of recording additional lease contracts where the Company is lessee. The Company did not restate comparative periods. The right of use assets are included in other assets and the lease obligations are included in other liabilities in the accompanying consolidated statements of financial condition. Other Intangible Assets : Intangible assets acquired in a purchase business combination with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Core deposit intangible assets (“CDI”), are recognized at the time of acquisition based on valuations prepared by independent third parties or other estimates of fair value. In preparing such valuations, variables such as deposit servicing costs, attrition rates, and market discount rates are considered. CDI assets are amortized to expense over their useful lives. CDI were $55,000 and $102,000 at September 30, 2019 and December 31, 2018 , respectively, and are included in other assets in the accompanying consolidated statements of financial condition. Reclassifications : Certain reclassifications have been made in the prior period’s financial statements to conform them to the current period’s presentation. These unaudited consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 , as filed with the Securities and Exchange Commission. Newly Issued Not Yet Effective Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for SEC filers or fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 ( i.e. , January 1, 2020, for calendar year entities). In October 2019, the FASB moved to defer the effective date of ASU No. 2016-13 for smaller reporting companies, as defined by the SEC, and other non-SEC reporting entities. The proposal would delay the effective date to fiscal years beginning after December 15, 2022, including interim periods within those fiscal periods. As the Company is a smaller reporting company, the proposed delay would be applicable to the Company, if it is approved by the FASB. The FASB is expected to finalize a revised ASU in mid-November.
Basis of Presentation	Basis of Presentation : BankFinancial Corporation, a Maryland corporation headquartered in Burr Ridge, Illinois, is the owner of all of the issued and outstanding capital stock of BankFinancial, NA (the “Bank”).
Principles of Consolidation	The interim unaudited consolidated financial statements include the accounts and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BFIN Asset Recovery Company, LLC (collectively, “the Company”), and reflect all normal and recurring adjustments that are, in the opinion of management, considered necessary for a fair presentation of the financial condition and results of operations for the periods presented. Such adjustments are the only adjustments reflected in the accompanying financial statements. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three and nine month periods ended September 30, 2019 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2019 or for any other period. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. Use of Estimate
Use of Estimates	Use of Estimates : To prepare financial statements in conformity with U.S. GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and future results could differ.
Uncollected Interest Policy	The Company’s reserve for uncollected loan interest was $120,000 and $72,000 at September 30, 2019 and December 31, 2018 , respectively. When a loan is on nonaccrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable.
Reclassifications	Reclassifications : Certain reclassifications have been made in the prior period’s financial statements to conform them to the current period’s presentation. These unaudited consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 , as filed with the Securities and Exchange Commission.
Recent Accounting Pronouncements	In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for SEC filers or fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 ( i.e. , January 1, 2020, for calendar year entities). In October 2019, the FASB moved to defer the effective date of ASU No. 2016-13 for smaller reporting companies, as defined by the SEC, and other non-SEC reporting entities. The proposal would delay the effective date to fiscal years beginning after December 15, 2022, including interim periods within those fiscal periods. As the Company is a smaller reporting company, the proposed delay would be applicable to the Company, if it is approved by the FASB. The FASB is expected to finalize a revised ASU in mid-November.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2019
Text Block [Abstract]
Recent Accounting Pronouncements	In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). These amendments require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for SEC filers or fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019 ( i.e. , January 1, 2020, for calendar year entities). In October 2019, the FASB moved to defer the effective date of ASU No. 2016-13 for smaller reporting companies, as defined by the SEC, and other non-SEC reporting entities. The proposal would delay the effective date to fiscal years beginning after December 15, 2022, including interim periods within those fiscal periods. As the Company is a smaller reporting company, the proposed delay would be applicable to the Company, if it is approved by the FASB. The FASB is expected to finalize a revised ASU in mid-November.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Nine Months Ended 2019 2018 2019 2018 Net income available to common stockholders $ 3,924 $ 3,737 $ 8,282 $ 11,926 Average common shares outstanding 15,373,964 17,365,679 15,679,927 17,641,743 Less - Unvested restricted stock shares — — — (435 ) Basic and diluted weighted average common shares outstanding 15,373,964 17,365,679 15,679,927 17,641,308 Basic and diluted earnings per common share $ 0.26 $ 0.22 $ 0.53 $ 0.68

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	The fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income are shown below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-Sale Securities September 30, 2019 Certificates of deposit $ 52,996 $ — $ — $ 52,996 Municipal securities 506 7 — 513 Mortgage-backed securities - residential 8,402 378 — 8,780 Collateralized mortgage obligations - residential 3,156 4 (9 ) 3,151 $ 65,060 $ 389 $ (9 ) $ 65,440 December 31, 2018 Certificates of deposit $ 73,507 $ — $ — $ 73,507 Municipal securities 509 — — 509 Mortgage-backed securities - residential 10,116 400 (38 ) 10,478 Collateralized mortgage obligations - residential 3,676 11 (2 ) 3,685 $ 87,808 $ 411 $ (40 ) $ 88,179 The mortgage-backed securities and collateralized mortgage obligations reflected in the preceding table were issued by U.S. government-sponsored entities or agencies, Freddie Mac, Fannie Mae and Ginnie Mae, and are obligations which the government has affirmed its commitment to support. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Equity Investments (1) December 31, 2018 Visa Class B shares $ — $ 3,427 $ — $ 3,427 (1) Equity investments are included in Other assets in the Consolidated Statements of Financial Condition. The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. 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. September 30, 2019 Amortized Cost Fair Value Due in one year or less $ 52,996 $ 52,996 Due after one year through five years 506 513 53,502 53,509 Mortgage-backed securities - residential 8,402 8,780 Collateralized mortgage obligations - residential 3,156 3,151 $ 65,060 $ 65,440 Investment securities available-for-sale with carrying values of $2.2 million and $2.7 million at September 30, 2019 and December 31, 2018 , respectively, were pledged as collateral on customer repurchase agreements and for other purposes as required or permitted by law. Sales of equity securities were as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Proceeds $ — $ — $ 3,722 $ 487 Gross gains — — 295 — Gross losses — — — (14 ) Securities with unrealized losses not recognized in income are as follows: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss September 30, 2019 Collateralized mortgage obligations - residential $ 1,663 $ (6 ) $ 976 $ (3 ) $ 2,639 $ (9 ) December 31, 2018 Mortgage-backed securities - residential $ — $ — $ 904 $ (38 ) $ 904 $ (38 ) Collateralized mortgage obligations - residential — — 1,729 (2 ) 1,729 (2 ) $ — $ — $ 2,633 $ (40 ) $ 2,633 $ (40 ) The Company evaluates marketable investment securities with significant declines in fair value on a quarterly basis to determine whether they should be considered other-than-temporarily impaired under current accounting guidance, which generally provides that if a marketable security is in an unrealized loss position, whether due to general market conditions or industry or issuer-specific factors, the holder of the securities must assess whether the impairment is other-than-temporary. Certain collateralized mortgage obligations that the Company holds in its investment portfolio were in an unrealized loss position at September 30, 2019 , but the unrealized losses were not considered significant under the Company’s impairment testing methodology. In addition, the Company does not intend to sell these securities, and it is likely that the Company will not be required to sell these securities before their anticipated recovery occurs. The Bank, as a member of Visa USA, received 51,404 unrestricted shares of Visa, Inc. Class B common stock in connection with Visa, Inc.’s initial public offering in 2007 and a related retroactive responsibility plan. The retroactive responsibility plan obligates all former Visa USA members to indemnify Visa USA, in proportion to their equity interests in Visa USA, for certain litigation losses and expenses, including settlement expenses, for the lawsuits covered by the retrospective responsibility plan. Due to the restrictions that the retrospective responsibility plan imposes on the Company’s Visa, Inc. Class B shares, the Company had not recorded the Class B shares as an asset. The Bank sold 25,702 shares of Visa Class B common stock in the fourth quarter of 2018 and recorded a gain of $3.6 million . For equity investments without readily determinable fair values, when an orderly transaction for the identical or similar investment of the same issuer is identified, we use the valuation techniques permitted under ASC 820 Fair Value to evaluate the observed transaction(s) and adjust the fair value of the equity investment. Based on the existing transfer restriction and the uncertainty of the outcome of the Visa litigation mentioned above, the 25,702 Visa Class B shares that the Company owned as of December 31, 2018 were recorded at $3.4 million in other assets with a corresponding gain. The Bank sold the remaining 25,702 shares of Visa Class B common stock in the first quarter of 2019 and recorded a gain of $295,000 .
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)	The fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income are shown below. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-Sale Securities September 30, 2019 Certificates of deposit $ 52,996 $ — $ — $ 52,996 Municipal securities 506 7 — 513 Mortgage-backed securities - residential 8,402 378 — 8,780 Collateralized mortgage obligations - residential 3,156 4 (9 ) 3,151 $ 65,060 $ 389 $ (9 ) $ 65,440 December 31, 2018 Certificates of deposit $ 73,507 $ — $ — $ 73,507 Municipal securities 509 — — 509 Mortgage-backed securities - residential 10,116 400 (38 ) 10,478 Collateralized mortgage obligations - residential 3,676 11 (2 ) 3,685 $ 87,808 $ 411 $ (40 ) $ 88,179 The mortgage-backed securities and collateralized mortgage obligations reflected in the preceding table were issued by U.S. government-sponsored entities or agencies, Freddie Mac, Fannie Mae and Ginnie Mae, and are obligations which the government has affirmed its commitment to support. Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Equity Investments (1) December 31, 2018 Visa Class B shares $ — $ 3,427 $ — $ 3,427 (1) Equity investments are included in Other assets in the Consolidated Statements of Financial Condition.
Amortized cost and fair values of securities	The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. 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. September 30, 2019 Amortized Cost Fair Value Due in one year or less $ 52,996 $ 52,996 Due after one year through five years 506 513 53,502 53,509 Mortgage-backed securities - residential 8,402 8,780 Collateralized mortgage obligations - residential 3,156 3,151 $ 65,060 $ 65,440
Securities with unrealized losses	Securities with unrealized losses not recognized in income are as follows: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss September 30, 2019 Collateralized mortgage obligations - residential $ 1,663 $ (6 ) $ 976 $ (3 ) $ 2,639 $ (9 ) December 31, 2018 Mortgage-backed securities - residential $ — $ — $ 904 $ (38 ) $ 904 $ (38 ) Collateralized mortgage obligations - residential — — 1,729 (2 ) 1,729 (2 ) $ — $ — $ 2,633 $ (40 ) $ 2,633 $ (40 )

Loans Receivable (Tables)

Loans Receivable (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans receivable	Loans receivable are as follows: September 30, 2019 December 31, 2018 One-to-four family residential real estate $ 60,757 $ 70,371 Multi-family mortgage 577,656 619,870 Nonresidential real estate 140,410 152,442 Construction and land 88 172 Commercial loans 163,846 187,406 Commercial leases 275,800 299,394 Consumer 2,052 1,539 1,220,609 1,331,194 Net deferred loan origination costs 942 1,069 Allowance for loan losses (7,603 ) (8,470 ) Loans, net $ 1,213,948 $ 1,323,793
Loans Receivable Based On Impairment Method	The following tables present the balance in the allowance for loan losses and loans receivable by portfolio segment and based on impairment method: Allowance for loan losses Loan Balances Individually evaluated for impairment Collectively evaluated for impairment Total Individually evaluated for impairment Collectively evaluated for impairment Total September 30, 2019 One-to-four family residential real estate $ — $ 580 $ 580 $ 2,416 $ 58,341 $ 60,757 Multi-family mortgage — 3,728 3,728 630 577,026 577,656 Nonresidential real estate — 1,217 1,217 282 140,128 140,410 Construction and land — 2 2 — 88 88 Commercial loans — 1,308 1,308 — 163,846 163,846 Commercial leases — 732 732 — 275,800 275,800 Consumer — 36 36 — 2,052 2,052 $ — $ 7,603 $ 7,603 $ 3,328 $ 1,217,281 1,220,609 Net deferred loan origination costs 942 Allowance for loan losses (7,603 ) Loans, net $ 1,213,948 The following tables present loans individually evaluated for impairment by class of loans: Three months ended Nine months ended Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized September 30, 2019 With no related allowance recorded: One-to-four family residential real estate $ 2,812 $ 2,280 $ 542 $ — $ 2,253 $ 12 $ 2,245 $ 40 One-to-four family residential real estate - non-owner occupied 136 136 — — 161 — 102 1 Multi-family mortgage - Illinois 629 630 — — 633 9 642 28 Nonresidential real estate 280 282 — — 1,447 — 679 1 $ 3,857 $ 3,328 $ 542 $ — $ 4,494 $ 21 $ 3,668 $ 70 Year ended December 31, 2018 Loan Balance Recorded Investment Partial Charge-off Allowance for Loan Losses Allocated Average Investment in Impaired Loans Interest Income Recognized December 31, 2018 With no related allowance recorded: One-to-four family residential real estate $ 2,751 $ 2,155 $ 575 $ — $ 3,274 $ 41 One-to-four family residential real estate - non-owner occupied 86 46 43 — 95 — Multi-family mortgage - Illinois 654 653 — — 795 39 3,491 2,854 $ 618 — 4,164 80 With an allowance recorded - Nonresidential real estate 356 270 93 27 21 — $ 3,847 $ 3,124 $ 711 $ 27 $ 4,185 $ 80
Allowance for loan losses	ctivity in the allowance for loan losses is as follows: Three Months Ended Nine Months Ended 2019 2018 2019 2018 Beginning balance $ 7,824 $ 8,179 $ 8,470 $ 8,366 Loans charged off: One-to-four family residential real estate (44 ) (84 ) (117 ) (214 ) Multi-family mortgage — — — (35 ) Nonresidential real estate (55 ) — (83 ) — Commercial loans — — (4,443 ) (140 ) Consumer (5 ) (6 ) (20 ) (7 ) (104 ) (90 ) (4,663 ) (396 ) Recoveries: One-to-four family residential real estate 5 25 28 130 Multi-family mortgage 8 8 24 26 Construction and land — 2 — 2 Commercial loans 4 2 8 227 Commercial leases — — — 5 Consumer — — — 1 17 37 60 391 Net charge-offs (87 ) (53 ) (4,603 ) (5 ) Provision for (recovery of) loan losses (134 ) (23 ) 3,736 (258 ) Ending balance $ 7,603 $ 8,103 $ 7,603 $ 8,103
Schedule of Financing Receivables, Non Accrual Status	The following tables present the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans: Loan Balance Recorded Investment Loans Past Due Over 90 Days, Still Accruing September 30, 2019 One-to-four family residential real estate $ 1,460 $ 1,160 $ — Nonresidential real estate 280 282 — $ 1,740 $ 1,442 $ — December 31, 2018 One-to-four family residential real estate $ 2,167 $ 1,162 $ — One-to-four family residential real estate – non-owner occupied 270 78 — Nonresidential real estate 356 270 — $ 2,793 $ 1,510 $ —
Past Due Financing Receivables	The following tables present the aging of the recorded investment of loans at September 30, 2019 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 3 $ 255 $ 1,017 $ 1,275 $ 47,989 $ 49,264 Non-owner occupied 4 269 137 410 11,062 11,472 Multi-family mortgage: Illinois — — — — 256,662 256,662 Other — — — — 314,698 314,698 Nonresidential real estate — — 282 282 138,884 139,166 Construction and land — — — — 80 80 Commercial loans: Regional commercial banking — — — — 28,193 28,193 Health care — — — — 75,454 75,454 Direct commercial lessor — — — — 60,664 60,664 Commercial leases: Investment rated commercial leases 197 14 — 211 133,697 133,908 Other commercial leases 1,710 — — 1,710 141,877 143,587 Consumer 6 3 — 9 2,060 2,069 $ 1,920 $ 541 $ 1,436 $ 3,897 $ 1,211,320 $ 1,215,217 The following tables present the aging of the recorded investment of loans at December 31, 2018 by class of loans: 30-59 Days Past Due 60-89 Days Past Due 90 Days or Total Past Due Loans Not Past Due Total One-to-four family residential real estate loans: Owner occupied $ 1,380 $ 637 $ 1,162 $ 3,179 $ 53,820 $ 56,999 Non-owner occupied 387 10 78 475 12,460 12,935 Multi-family mortgage: Illinois 458 — — 458 275,283 275,741 Other — — — — 340,470 340,470 Nonresidential real estate — 270 — 270 149,271 149,541 Construction and land — — — — 169 169 Commercial loans: Regional commercial banking — — — — 39,712 39,712 Health care — — — — 85,418 85,418 Direct commercial lessor — — — — 62,719 62,719 Commercial leases: Investment rated commercial leases 505 — — 505 166,713 167,218 Other commercial leases — — — — 133,958 133,958 Consumer 40 4 — 44 1,508 1,552 $ 2,770 $ 921 $ 1,240 $ 4,931 $ 1,321,501 $ 1,326,432
Troubled Debt Restructurings on Financing Receivables	The following table presents loans classified as TDRs: September 30, 2019 December 31, 2018 One-to-four family residential real estate - nonaccrual $ 17 $ 17
Financing Receivable Credit Quality Indicators	As of September 30, 2019 , the risk categories of loans by class of loans are as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans: Owner occupied $ 47,584 $ 401 $ 541 $ 799 $ 49,325 Non-owner occupied 11,230 30 36 136 11,432 Multi-family mortgage: Illinois 257,690 — 211 — 257,901 Other 319,344 411 — — 319,755 Nonresidential real estate 140,033 — 93 284 140,410 Construction and land 88 — — — 88 Commercial loans: Regional commercial banking 28,094 — — — 28,094 Health care 74,767 595 — — 75,362 Direct commercial lessor 60,390 — — — 60,390 Commercial leases: Investment rated commercial leases 132,493 556 — — 133,049 Other commercial leases 141,187 1,564 — — 142,751 Consumer 2,045 4 3 — 2,052 $ 1,214,945 $ 3,561 $ 884 $ 1,219 $ 1,220,609 As of December 31, 2018 , the risk categories of loans by class of loans are as follows: Pass Special Mention Substandard Nonaccrual Total One-to-four family residential real estate loans Owner occupied $ 55,353 $ 495 $ 328 $ 993 $ 57,169 Non-owner occupied 12,911 — 37 254 13,202 Multi-family mortgage: Illinois 279,021 — 216 — 279,237 Other 340,633 — — — 340,633 Nonresidential real estate 151,793 281 98 270 152,442 Construction and land 172 — — — 172 Commercial loans: Regional commercial banking 34,764 4,810 — — 39,574 Health care 85,001 — 342 — 85,343 Direct commercial lessor 62,489 — — — 62,489 Commercial leases: Investment rated commercial leases 165,508 701 — — 166,209 Other commercial leases 133,185 — — — 133,185 Consumer 1,529 3 7 — 1,539 $ 1,322,359 $ 6,290 $ 1,028 $ 1,517 $ 1,331,194

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2019
Other Real Estate [Abstract]
Schedule of Real Estate Properties [Table Text Block]	September 30, 2019 December 31, 2018 Balance Valuation Allowance Net OREO Balance Balance Valuation Allowance Net OREO Balance One–to–four family residential $ 307 $ (38 ) $ 269 $ 875 $ — $ 875 Multi-family mortgage — — — 276 — 276 Nonresidential real estate — — — 74 — 74 Land — — — 24 (23 ) 1 $ 307 $ (38 ) $ 269 $ 1,249 $ (23 ) $ 1,226
Real Estate Owned, rollforward [Table Text Block]	The following represents the roll forward of OREO and the composition of OREO properties: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 497 $ 1,187 $ 1,226 $ 2,351 New foreclosed properties 30 403 76 1,241 Valuation adjustments (17 ) (1 ) (38 ) (27 ) Sales and payments (241 ) (604 ) (995 ) (2,580 ) Ending balance $ 269 $ 985 $ 269 $ 985
OREO valuation allowance, rollforward [Table Text Block]	Activity in the valuation allowance is as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2019 2018 2019 2018 Beginning balance $ 21 $ 44 $ 23 $ 305 Additions charged to expense 17 1 38 27 Reductions from sales of OREO — (22 ) (23 ) (309 ) Ending balance $ 38 $ 23 $ 38 $ 23

LEASES (Tables)

LEASES (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	The following table represents the classification of the Company's right of use and lease liabilities: Statement of Financial Condition Location September 30, 2019 Operating Lease Right of Use Asset: Gross carrying amount $ 6,694 Accumulated amortization (636 ) Net book value Other assets $ 6,058 Operating Lease Liabilities: Right of use lease obligations Other liabilities $ 6,058 At September 30, 2019 , the weighted-average remaining lease term for the operating leases was 9.2 years and the weighted-average discount rate used in the measurement of operating lease liabilities was 3.16% . The Company utilized the FHLB fixed rate advance rate as of January 1, 2019 for the term most closely aligning with the remaining lease term. For the Three Months Ended September 30, 2019 For the Nine Months Ended September 30, 2019 Lease cost: Operating lease cost $ 212 $ 636 Short-term lease cost 26 86 Sublease income (17 ) (32 ) Total lease cost $ 221 $ 690 Other information: Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 225 $ 674
Operating Lease, Liability	Future minimum payments under non-cancellable operating leases with terms longer than 12 months, are as follows at September 30, 2019 : Twelve months ended September 30, 2020 $ 901 2021 920 2022 953 2023 987 2024 582 Thereafter 2,849 Total future minimum operating lease payments 7,192 Amounts representing interest (1,134 ) Present value of net future minimum operating lease payments $ 6,058

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase (Tables)	9 Months Ended
	Sep. 30, 2019
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Abstract]
Securities sold under agreements to repurchase	Securities sold under agreements to repurchase, included with borrowings on the consolidated balance sheet, are shown below. Overnight and Continuous Up to 30 days 30 - 90 days Greater Than 90 days Total September 30, 2019 Repurchase agreements and repurchase-to-maturity transactions $ 1,253 $ — $ — $ — $ 1,253 Gross amount of recognized liabilities for repurchase agreements in Consolidated Statements of Financial Condition $ 1,253 December 31, 2018 Repurchase agreements and repurchase-to-maturity transactions $ 1,049 $ — $ — $ — $ 1,049 Gross amount of recognized liabilities for repurchase agreements in Consolidated Statements of Financial Condition $ 1,049

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Company's financial instruments measured at fair values	The following table sets forth the Company’s financial assets that were accounted for at fair value and are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Fair Value Measurements Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value September 30, 2019 Securities: Certificates of deposit $ — $ 52,996 $ — $ 52,996 Municipal securities — 513 — 513 Mortgage-backed securities – residential — 8,780 — 8,780 Collateralized mortgage obligations – residential — 3,151 — 3,151 $ — $ 65,440 $ — $ 65,440 December 31, 2018 Securities: Certificates of deposit $ — $ 73,507 $ — $ 73,507 Municipal securities — 509 — 509 Mortgage-backed securities - residential — 10,478 — 10,478 Collateralized mortgage obligations – residential — 3,685 — 3,685 $ — $ 88,179 $ — $ 88,179
Schedule of Company's financial instruments measured on non recurring at fair values	The following table sets forth the Company’s assets that were measured at fair value on a non-recurring basis: Fair Value Measurement Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value September 30, 2019 Other real estate owned - One-to-four family residential real estate $ — $ — $ 193 $ 193 December 31, 2018 Impaired loans - Nonresidential real estate $ — $ — $ 243 $ 243 Other real estate owned - Land $ — $ — $ 1 $ 1 Other investments (1) $ — $ — $ 3,427 $ 3,427
Schedule of fair value quantitative information	The following table presents quantitative information, based on certain empirical data with respect to Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at September 30, 2019 and December 31, 2018 : Fair Value Valuation Significant Unobservable Range September 30, 2019 Other real estate owned - One-to-four family residential real estate $ 193 Sales comparison Discount applied to valuation 16.0% December 31, 2018 Other real estate owned - Land $ 1 Sales comparison Discount applied to valuation 12.3%
Carrying amount and estimated fair value of financial instruments	The carrying amount and estimated fair value of financial instruments are as follows: Fair Value Measurements at September 30, 2019 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 140,793 $ 13,074 $ 127,719 $ — $ 140,793 Securities 65,440 — 65,440 — 65,440 Loans receivable, net of allowance for loan losses 1,213,948 — — 1,222,391 1,222,391 FHLB and FRB stock 7,490 — — — N/A Accrued interest receivable 4,763 — 294 4,469 4,763 Financial liabilities Certificates of deposit 419,273 — 420,287 — 420,287 Borrowings 1,253 — 1,253 — 1,253 Fair Value Measurements at December 31, 2018 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 98,204 $ 13,805 $ 84,399 $ — $ 98,204 Securities 88,179 — 88,179 — 88,179 Loans receivable, net of allowance for loan losses 1,323,793 — — 1,315,855 1,315,855 FHLB and FRB stock 8,026 — — — N/A Accrued interest receivable 4,952 — 249 4,703 4,952 Financial liabilities Certificates of deposit 438,328 — 436,598 — 436,598 Borrowings 21,049 — 21,050 — 21,050

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Noninterest Income Outside the Scope of ASC 606	The following table presents the Company's sources of noninterest income. Items outside of the scope of the ASC 606 are noted as such. Three Months Ended Nine Months Ended 2019 2018 2019 2018 Deposit service charges and fees $ 983 $ 1,003 $ 2,887 $ 2,970 Loan servicing fees (1) 99 71 178 231 Mortgage brokerage and banking fees (1) 28 46 77 226 Gain (loss) on sale of equity securities (1) — — 295 (14 ) Loss on disposal of other assets — — (19 ) — Gain on sale of premises held-for-sale — — — 93 Trust and insurance commissions and annuities income 198 207 627 670 Earnings on bank-owned life insurance (1) 37 35 105 146 Bank-owned life insurance death benefit (1) — — — 1,389 Other (1) 129 208 374 492 Total noninterest income $ 1,474 $ 1,570 $ 4,524 $ 6,203 (1) Not within the scope of ASC 606

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Gross carrying amount	$ 6,058,000	$ 6,700,000		$ 0
Right of use lease obligations	6,058,000	$ 6,700,000
Intangible Assets, Net (Excluding Goodwill)	$ 55,000		$ 102,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share, Basic and Diluted [Abstract]
Net income available to common stockholders	$ 3,924	$ 3,737	$ 8,282	$ 11,926
Average common shares outstanding (shares)	15,373,964	17,365,679	15,679,927	17,641,743
Less:
Unvested restricted stock shares (shares)	0	0	0	(435)
Weighted average common shares outstanding (shares)	15,373,964	17,365,679	15,679,927	17,641,308
Add - Net effect of dilutive stock options and unvested restricted stock	0	0	0	0
Weighted average diluted common shares outstanding (shares)	15,373,964	17,365,679	15,679,927	17,641,308
Basic earnings per common share (usd per share)	$ 0.26	$ 0.22	$ 0.53	$ 0.68
Diluted earnings per common share (usd per share)	$ 0.26	$ 0.22	$ 0.53	$ 0.68
Retained Earnings [Member]
Earnings Per Share, Basic and Diluted [Abstract]
Net income available to common stockholders	$ 3,924	$ 3,737	$ 8,282	$ 11,926

Securities - Fair Value of Secu

Securities - Fair Value of Securites (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	$ 65,060	$ 87,808
Gross Unrealized Gains	389	411
Gross Unrealized Losses	(9)	(40)
Total Fair value	65,440	88,179
Certificates of deposit [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	52,996	73,507
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Total Fair value	52,996	73,507
Municipal Bonds [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Available-for-sale Securities, Amortized Cost Basis	506	509
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	7	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Total Fair value	513	509
Equity mutual fund [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Total Fair value	0	0
Mortgage - backed securities - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	8,402	10,116
Gross Unrealized Gains	378	400
Gross Unrealized Losses	0	(38)
Total Fair value	8,780	10,478
Collateralized mortgage obligations - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	3,156	3,676
Gross Unrealized Gains	4	11
Gross Unrealized Losses	(9)	(2)
Total Fair value	$ 3,151	$ 3,685

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost	$ 52,996
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	52,996
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	53,502
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	53,509
Available-for-sale Securities, Amortized Cost Basis	506
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	513
Mortgage - backed securities - residential [Member]
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	8,402
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,780
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	3,156
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	$ 3,151
Common Class B [Member] | Equity mutual fund [Member]
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI, Restricted		$ 0
Amortized cost and fair values of securities
Total Fair value		3,427
Gross Unrealized Gains		3,427
Gross Unrealized Losses		$ 0

Securities - Proceeds and Gross

Securities - Proceeds and Gross Gains (Losses) From Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Proceeds and Gross Gains (Losses) from Sale of Securities [Abstract]
Proceeds	$ 0	$ 0	$ 3,722	$ 487
Gain (loss) on sale of equity securities	0	0	295	(14)
Gross gains		$ 0		$ 0	$ 3,600
Gross losses	$ 0		$ 0

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized cost and fair values of securities
Less than 12 Months	$ 1,663	$ 0
12 Months or More	976	2,633
Total	2,639	2,633
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	(6)	0
12 Months or More	(3)	(40)
Unrealized Loss	(9)	(40)
Mortgage Backed Securities Residential [Member]
Amortized cost and fair values of securities
Less than 12 Months	0	0
12 Months or More	0	904
Total	0	904
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	0	0
12 Months or More	0	(38)
Unrealized Loss	0	(38)
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Less than 12 Months	1,663	0
12 Months or More	976	1,729
Total	2,639	1,729
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	(6)	0
12 Months or More	(3)	(2)
Unrealized Loss	$ (9)	$ (2)

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2007
Debt Securities, Available-for-sale [Line Items]
Gross gains			$ 0		$ 0	$ 3,600
Debt Securities, Available-for-sale, Realized Loss	$ 0			$ 0
Gain (loss) on sale of equity securities	0		$ 0	295	$ (14)
Collateral Pledged [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 2,200	$ 2,700		$ 2,200		2,700
Other Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Debt Securities, Available-for-sale [Line Items]
Investments, Fair Value Disclosure		3,427				3,427
Fair Value, Inputs, Level 3 [Member] | Other Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Debt Securities, Available-for-sale [Line Items]
Investments, Fair Value Disclosure		$ 3,427				$ 3,427
Common Class B [Member]
Debt Securities, Available-for-sale [Line Items]
Sale of Stock, Number of Shares Issued in Transaction		(25,702)
Visa Inc's Initial Public Offering [Member] | Common Class B [Member]
Debt Securities, Available-for-sale [Line Items]
Sale of Stock, Number of Shares Issued in Transaction							(51,404)
Shares, Outstanding		(25,702)				(25,702)

Loans Receivable (Details)

Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Loans receivable
Total loans	$ 1,220,609		$ 1,331,194
Net deferred loan origination costs	942		1,069
Allowance for loan losses	(7,603)	$ (7,824)	(8,470)	$ (8,103)	$ (8,179)	$ (8,366)
Loans, net	1,213,948		1,323,793
One-to-four family residential real estate loans [Member]
Loans receivable
Total loans	60,757		70,371
Allowance for loan losses	(580)		(699)
Multi-family mortgage loans [Member]
Loans receivable
Total loans	577,656		619,870
Allowance for loan losses	(3,728)		(3,991)
Nonresidential real estate loans [Member]
Loans receivable
Total loans	140,410		152,442
Allowance for loan losses	(1,217)		(1,476)
Construction and land loans [Member]
Loans receivable
Total loans	88		172
Allowance for loan losses	(2)		(4)
Commercial loans [Member]
Loans receivable
Total loans	163,846		187,406
Allowance for loan losses	(1,308)		(1,517)
Commercial leases [Member]
Loans receivable
Total loans	275,800		299,394
Allowance for loan losses	(732)		(755)
Consumer loans [Member]
Loans receivable
Total loans	2,052		1,539
Allowance for loan losses	$ (36)		$ (28)

Loans Receivable - Loan Origina

Loans Receivable - Loan Origination and Risk Management (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 1,220,609	$ 1,331,194
Multi-family mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	577,656	619,870
Nonresidential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	140,410	152,442
Commercial leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 275,800	$ 299,394

Loans Receivable - Allowance fo

Loans Receivable - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Allowance for loan losses and the loans receivable by portfolio segment
Net deferred loan origination costs	$ 942	$ 1,069
Loans, net	$ 1,213,948	$ 1,323,793

Loans Receivable - Activity in

Loans Receivable - Activity in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 7,824	$ 8,179	$ 8,470	$ 8,366
Loans charged off	(104)	(90)	(4,663)	(396)
Recoveries	17	37	60	391
Net charge-off	87	53	4,603	5
Provision for (recovery of) loan losses	134	23	(3,736)	258
Ending balance	7,603	8,103	7,603	8,103
One-to-four family residential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			699
Loans charged off	(44)	(84)	(117)	(214)
Recoveries	5	25	28	130
Ending balance	580		580
Multi-family mortgage loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			3,991
Loans charged off	0	0	0	(35)
Recoveries	8	8	24	26
Ending balance	3,728		3,728
Nonresidential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,476
Loans charged off	(55)	0	(83)	0
Ending balance	1,217		1,217
Construction and land loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			4
Ending balance	2		2
Commercial loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,517
Loans charged off	0	0	(4,443)	(140)
Recoveries	4	2	8	227
Ending balance	1,308		1,308
Commercial leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			755
Recoveries	0	0	0	5
Ending balance	732		732
Consumer loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			28
Loans charged off	(5)	(6)	(20)	(7)
Recoveries	0	$ 0	0	$ 1
Ending balance	$ 36		$ 36

Loans Receivable - Loans Indivi

Loans Receivable - Loans Individually Evaluated for Impairment (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 1,220,609,000	$ 1,220,609,000	$ 1,331,194,000
Loans individually evaluated for impairment by class loans
Loan Balance			3,491,000
Recorded Investment			2,854,000
Partial Charge-off			618,000
Average Investment in Impaired Loans			4,164,000
Interest Income Recognized			80,000
Allowance for loan losses (With an allowance recorded)	0	0	27,000
Impaired Loan, Total	3,857,000	3,857,000	3,847,000
Recorded Investment, Total	3,328,000	3,328,000	3,124,000
Partial Charge-offs, Total	542,000	542,000	711,000
Average Investment in Impaired Loans, Total	4,494,000	3,668,000	4,185,000
Interest Income Recognized, Total	21,000	70,000	80,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	7,603,000	7,603,000	8,443,000
Net deferred loan origination costs	942,000	942,000	1,069,000
Loans and Leases Receivable, Allowance	7,603,000	7,603,000	8,470,000	$ 7,824,000	$ 8,103,000	$ 8,179,000	$ 8,366,000
Financing Receivable, Individually Evaluated for Impairment	3,328,000	3,328,000	3,141,000
Financing Receivable, Collectively Evaluated for Impairment	1,217,281,000	1,217,281,000	1,328,053,000
Loans, net	1,213,948,000	1,213,948,000	1,323,793,000
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	60,757,000	60,757,000	70,371,000
Loans individually evaluated for impairment by class loans
Loan Balance	2,812,000	2,812,000	2,751,000
Recorded Investment	2,280,000	2,280,000	2,155,000
Partial Charge-off	542,000	542,000	575,000
Average Investment in Impaired Loans	2,253,000	2,245,000	3,274,000
Interest Income Recognized	12,000	40,000	41,000
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	580,000	580,000	699,000
Loans and Leases Receivable, Allowance	580,000	580,000	699,000
Financing Receivable, Individually Evaluated for Impairment	2,416,000	2,416,000	2,218,000
Financing Receivable, Collectively Evaluated for Impairment	58,341,000	58,341,000	68,153,000
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	11,432,000	11,432,000	13,202,000
Loans individually evaluated for impairment by class loans
Loan Balance	136,000	136,000	86,000
Recorded Investment	136,000	136,000	46,000
Partial Charge-off	0	0	43,000
Average Investment in Impaired Loans	161,000	102,000	95,000
Interest Income Recognized	0	1,000	0
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	577,656,000	577,656,000	619,870,000
Loans individually evaluated for impairment by class loans
Loan Balance	629,000	629,000	654,000
Recorded Investment	630,000	630,000	653,000
Partial Charge-off	0	0	0
Average Investment in Impaired Loans	633,000	642,000	795,000
Interest Income Recognized	9,000	28,000	39,000
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,728,000	3,728,000	3,991,000
Loans and Leases Receivable, Allowance	3,728,000	3,728,000	3,991,000
Financing Receivable, Individually Evaluated for Impairment	630,000	630,000	653,000
Financing Receivable, Collectively Evaluated for Impairment	577,026,000	577,026,000	619,217,000
Multi Family Mortgage Loans without wholesale [Member] [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	257,901,000	257,901,000	279,237,000
Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	319,755,000	319,755,000	340,633,000
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	140,410,000	140,410,000	152,442,000
Loans individually evaluated for impairment by class loans
Loan Balance	280,000	280,000
Recorded Investment	282,000	282,000
Partial Charge-off	0	0
Average Investment in Impaired Loans	1,447,000	679,000
Interest Income Recognized	0	1,000
Allowance for loan losses (With an allowance recorded)	0	0	27,000
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,217,000	1,217,000	1,449,000
Loans and Leases Receivable, Allowance	1,217,000	1,217,000	1,476,000
Financing Receivable, Individually Evaluated for Impairment	282,000	282,000	270,000
Financing Receivable, Collectively Evaluated for Impairment	140,128,000	140,128,000	152,172,000
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance			356,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment			270,000
Impaired Financing Receivable, with Related Allowance, Partial Charge-offs			93,000
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment			21,000
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			0
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	88,000	88,000	172,000
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	28,094,000	28,094,000	39,574,000
Commercial loans - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	142,751,000	142,751,000	133,185,000
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	2,052,000	2,052,000	1,539,000
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	36,000	36,000	28,000
Loans and Leases Receivable, Allowance	36,000	36,000	28,000
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	2,052,000	2,052,000	1,539,000
Construction And Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	88,000	88,000	172,000
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,000	2,000	4,000
Loans and Leases Receivable, Allowance	2,000	2,000	4,000
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	88,000	88,000	172,000
Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	163,846,000	163,846,000	187,406,000
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,308,000	1,308,000	1,517,000
Loans and Leases Receivable, Allowance	1,308,000	1,308,000	1,517,000
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	163,846,000	163,846,000	187,406,000
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	275,800,000	275,800,000	299,394,000
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	0	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	732,000	732,000	755,000
Loans and Leases Receivable, Allowance	732,000	732,000	755,000
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	275,800,000	275,800,000	299,394,000
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 49,325,000	$ 49,325,000	$ 57,169,000

Loans Receivable - Nonaccrual L

Loans Receivable - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Reserve For Uncollected Loan Interest	$ 120	$ 72
Unpaid Principal Balance	1,740	2,793
Recorded Investment	1,442	1,510
Loans Past Due Over 90 Days, still accruing	0	0
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	1,460	2,167
Recorded Investment	1,160	1,162
Loans Past Due Over 90 Days, still accruing	0	0
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	0	270
Recorded Investment	0	78
Loans Past Due Over 90 Days, still accruing	0	0
Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance		356
Loans Past Due Over 90 Days, still accruing		0
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	280
Recorded Investment	282	$ 270
Loans Past Due Over 90 Days, still accruing	$ 0

Loans Receivable - Past Due Loa

Loans Receivable - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 3,897	$ 4,931
Recorded Investment, Loans Not Past Due	1,211,320	1,321,501
Recorded investment, total	1,215,217	1,326,432
Commercial Leases Investment Rated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	211	505
Recorded Investment, Loans Not Past Due	133,697	166,713
Recorded investment, total	133,908	167,218
Commercial Loans Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,710	0
Recorded Investment, Loans Not Past Due	141,877	133,958
Recorded investment, total	143,587	133,958
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	9	44
Recorded Investment, Loans Not Past Due	2,060	1,508
Recorded investment, total	2,069	1,552
Commercial Loans Health Care [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Loans Not Past Due	75,454	85,418
Recorded investment, total	75,454	85,418
Commercial Loans Municipal [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	60,664	62,719
Recorded investment, total	60,664	62,719
Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	28,193	39,712
Recorded investment, total	28,193	39,712
Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	80	169
Recorded investment, total	80	169
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	282	270
Recorded Investment, Loans Not Past Due	138,884	149,271
Recorded investment, total	139,166	149,541
Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	314,698	340,470
Recorded investment, total	314,698	340,470
Multi Family Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	458
Recorded Investment, Loans Not Past Due	256,662	275,283
Recorded investment, total	256,662	275,741
One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	410	475
Recorded Investment, Loans Not Past Due	11,062	12,460
Recorded investment, total	11,472	12,935
One to Four Family Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,275	3,179
Recorded Investment, Loans Not Past Due	47,989	53,820
Recorded investment, total	49,264	56,999
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,920	2,770
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Leases Investment Rated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	197	505
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loans Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,710	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	6	40
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loans Municipal [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Multi Family Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	458
Financing Receivables, 30 to 59 Days Past Due [Member] | One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	4	387
Financing Receivables, 30 to 59 Days Past Due [Member] | One to Four Family Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	3	1,380
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	541	921
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Leases Investment Rated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due		0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loans Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	3	4
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loans Health Care [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	14
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Loans Municipal [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	270
Financing Receivables, 60 to 89 Days Past Due [Member] | Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Multi Family Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	269	10
Financing Receivables, 60 to 89 Days Past Due [Member] | One to Four Family Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	255	637
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Leases Investment Rated [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	1,436	1,240
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Loans Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Loans Health Care [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Loans Municipal [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	282	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Multi Family Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	137	78
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | One to Four Family Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, Total Past Due	$ 1,017	$ 1,162

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructuring (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Modifications [Line Items]
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings	$ 0	$ 0
Troubled Debt Restructurings
Financing receivable modifications	17,000
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount	0	0
One-to-four family residential real estate loans - non-owner occupied loans [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	$ 17,000	$ 17,000

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 3,897	$ 4,931
Financing Receivable Credit Quality Indicators
Total loans	1,220,609	1,331,194
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,275	3,179
Financing Receivable Credit Quality Indicators
Total loans	60,757	70,371
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	49,325	57,169
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	410	475
Financing Receivable Credit Quality Indicators
Total loans	11,432	13,202
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	458
Financing Receivable Credit Quality Indicators
Total loans	577,656	619,870
Multi Family Mortgage Loans without wholesale [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	257,901	279,237
Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable Credit Quality Indicators
Total loans	319,755	340,633
Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	140,410	152,442
Land loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable Credit Quality Indicators
Total loans	88	172
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable Credit Quality Indicators
Total loans	28,094	39,574
Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable Credit Quality Indicators
Total loans	60,390	62,489
Commercial Loans - Warehouse Lines [Member]
Financing Receivable Credit Quality Indicators
Total loans
Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	75,362	85,343
Commercial loans - other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,710	0
Financing Receivable Credit Quality Indicators
Total loans	142,751	133,185
Commercial Leases - Investment Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	211	505
Financing Receivable Credit Quality Indicators
Total loans	133,049	166,209
Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,052	1,539
Nonaccrual [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,219	1,517
Nonaccrual [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	799	993
Nonaccrual [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	136	254
Nonaccrual [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	284	270
Nonaccrual [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member]
Financing Receivable Credit Quality Indicators
Total loans	884	1,028
Substandard [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	541	328
Substandard [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	36	37
Substandard [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	211	216
Substandard [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	93	98
Substandard [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	342
Substandard [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	3	7
Pass [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,214,945	1,322,359
Pass [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	47,584	55,353
Pass [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	11,230	12,911
Pass [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	257,690	279,021
Pass [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	319,344	340,633
Pass [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	140,033	151,793
Pass [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	88	172
Pass [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	28,094	34,764
Pass [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	60,390	62,489
Pass [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	74,767	85,001
Pass [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	141,187	133,185
Pass [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	132,493	165,508
Pass [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,045	1,529
Special Mention [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,561	6,290
Special Mention [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	401	495
Special Mention [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	30	0
Special Mention [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	411	0
Special Mention [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	281
Special Mention [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	4,810
Special Mention [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	595	0
Special Mention [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,564	0
Special Mention [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	556	701
Special Mention [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	4	3
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,920	2,770
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	3	1,380
Financing Receivables, 30 to 59 Days Past Due [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	4	387
Financing Receivables, 30 to 59 Days Past Due [Member] | Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	458
Financing Receivables, 30 to 59 Days Past Due [Member] | Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Land loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial loans - other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	1,710	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Past Due	$ 197	$ 505

Loans Receivable - Narrative (D

Loans Receivable - Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Receivables [Abstract]
Reserve For Uncollected Loan Interest	$ 120,000	$ 72,000
Financing receivable modifications	17,000
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings	$ 0	$ 0

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Repossessed Assets						$ 0
Mortgage Loans in Process of Foreclosure, Amount	$ 617,000		$ 617,000			349,000
Real Estate Owned, Valuation Allowance, Amounts Applied	0	$ (22,000)	(23,000)	$ (309,000)
Real Estate Owned, Valuation Allowance, Valuation Increase	17,000	1,000	38,000	27,000
Real Estate Owned, Valuation Allowance	(38,000)	(23,000)	(38,000)	(23,000)	$ (21,000)	(23,000)	$ (44,000)	$ (305,000)
Other real estate owned, net	269,000	985,000	269,000	985,000	$ 497,000	1,226,000	$ 1,187,000	$ 2,351,000
Other Real Estate, Additions	30,000	403,000	76,000	1,241,000
Other Real Estate, Valuation Adjustments	(17,000)	(1,000)	(38,000)	(27,000)
Other Real Estate, Disposals	(241,000)	$ (604,000)	(995,000)	$ (2,580,000)
Other real estate owned at carrying value before valuation allowance	307,000		307,000			1,249,000
Multi Family Mortgage Loans [Member]
Real Estate Owned, Valuation Allowance	0		0			0
Other Real Estate Owned At Carrying Value	0		0			276,000
Other real estate owned at carrying value before valuation allowance	0		0			276,000
One to Four Family Residential Real Estate Loans [Member]
Real Estate Owned, Valuation Allowance	(38,000)		(38,000)			0
Other Real Estate Owned At Carrying Value						875,000
Other real estate owned, net	269,000		269,000
Other real estate owned at carrying value before valuation allowance	307,000		307,000			875,000
Nonresidential Real Estate [Member]
Real Estate Owned, Valuation Allowance	0		0			0
Other Real Estate Owned At Carrying Value	0		0			74,000
Other real estate owned at carrying value before valuation allowance	0		0			74,000
Land [Member]
Real Estate Owned, Valuation Allowance	0		0			(23,000)
Other Real Estate Owned At Carrying Value	0		0			1,000
Other real estate owned at carrying value before valuation allowance	0		0			24,000
Residential Real Estate [Member]
Repossessed Assets	$ 0		$ 0			$ 0

LEASES (Details)

LEASES (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Sep. 30, 2018
Leases [Abstract]
Gross carrying amount	$ 6,694
Net book value	6,058	$ 6,700	$ 0
Accumulated amortization	(636)
Right of use lease obligations	$ 6,058	$ 6,700

LEASES Narrative (Details)

LEASES Narrative (Details)	Sep. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Weighted average remaining lease term - operating leases	9 years 2 months 5 days
Weighted average discount rate - operating leases		3.16%

LEASES Lease Costs (Details)

LEASES Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Cash paid for amounts included in the measurement of leases	$ 212	$ 636
Short-term lease cost	26	86
Sublease income	(17)	(32)
Total lease cost	221	690
Operating cash flows from operating leases	$ 225	$ 674

LEASES Lease Maturity (Details)

LEASES Lease Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
2020	$ 901
2021	920
2022	953
2023	987
2024	582
Thereafter	2,849
Total future minimum operating lease payments	7,192
Amounts representing interest	(1,134)
Present value of net future minimum operating lease payments	$ 6,058	$ 6,700

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances [Line Items]
Carrying Value of Federal Funds Purchased, Securities Sold under Agreements to Repurchase, and Deposits Received for Securities Loaned	$ 1,253	$ 1,049
Federal Home Loan Bank Advances [Member] | Period One [Member]
Federal Home Loan Bank, Advances [Line Items]
Debt, Long-term and Short-term, Combined Amount	0	20,000
Collateral Pledged [Member]
Federal Home Loan Bank, Advances [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 2,200	$ 2,700

Fair Value - Financial Assets A

Fair Value - Financial Assets Accounted for at Fair Value (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 0		$ 0		$ 27,000
Schedule of Company's financial instruments measured at fair values
Total Fair value	65,440,000		65,440,000		88,179,000
Real Estate Acquired Through Foreclosure Fair Value					1,000
Real Estate Owned, Valuation Allowance, Valuation Increase	17,000	$ 1,000	38,000	$ 27,000
Other real estate owned at carrying value before valuation allowance	307,000		307,000		1,249,000
Real Estate Owned, Valuation Allowance	38,000	$ 23,000	38,000	$ 23,000	23,000	$ 21,000	$ 44,000	$ 305,000
Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	52,996,000		52,996,000		73,507,000
Equity Funds [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Residential Mortgage Backed Securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	8,780,000		8,780,000		10,478,000
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,780,000		8,780,000
Collateralized Debt Obligations [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	3,151,000		3,151,000		3,685,000
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	3,151,000		3,151,000
Municipal Bonds [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	513,000		513,000		509,000
Nonrecurring [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	65,440,000		65,440,000		88,179,000
Nonrecurring [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	52,996,000		52,996,000		73,507,000
Nonrecurring [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	8,780,000		8,780,000		10,478,000
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	3,151,000		3,151,000		3,685,000
Nonrecurring [Member] | Municipal Securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	513,000		513,000		509,000
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Municipal Securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	65,440,000		65,440,000		88,179,000
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	52,996,000		52,996,000
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,780,000		8,780,000
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	3,151,000		3,151,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Municipal Securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0		0
One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	193,000		193,000
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	193,000		193,000
Commercial Real Estate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 0		$ 0		27,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment					270,000
Land Loans [Member] | Nonrecurring [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value					1,000
Land Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value					0
Land Loans [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value					0
Land Loans [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value					$ 1,000
Sales Comparison Valuation Technique [Member] | Real Estate [Member]
Schedule of Company's financial instruments measured at fair values
Fair Value Measurements, Valuation Processes, Description			Sales comparison		Sales comparison
Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Schedule of Company's financial instruments measured at fair values
Fair Value Measurements, Sensitivity Analysis, Description			Discount applied to valuation		Discount applied to valuation
Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Land Loans [Member]
Schedule of Company's financial instruments measured at fair values
Real estate owned, measurement input	0.160		0.160		0.123
Measurement Input, Comparability Adjustment [Member] | Maximum [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member]
Schedule of Company's financial instruments measured at fair values
Real estate owned, measurement input					0.1522
Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member]
Schedule of Company's financial instruments measured at fair values
Real estate owned, measurement input					0.1100
Land [Member]
Schedule of Company's financial instruments measured at fair values
Other real estate owned at carrying value before valuation allowance	$ 0		$ 0		$ 24,000
Real Estate Owned, Valuation Allowance	$ 0		$ 0		$ 23,000

Fair Value - Assets Measured at

Fair Value - Assets Measured at Fair Value on a Non-Recurring Basis (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned					$ 1,000
Other Real Estate Owned Write Downs	$ 17,000	$ 1,000	$ 38,000	$ 27,000
Nonrecurring [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned	193,000		193,000
Nonrecurring [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Loan Fair Value					243,000
Nonrecurring [Member] | Land Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned					1,000
Nonrecurring [Member] | Other Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, Fair Value Disclosure					3,427,000
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned	0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Loan Fair Value					0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Land Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned					0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, Fair Value Disclosure					0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned	0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Loan Fair Value					0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Land Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned					0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Other Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, Fair Value Disclosure					0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned	$ 193,000		$ 193,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired Loan Fair Value					243,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Land Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Other real estate owned					1,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investments, Fair Value Disclosure					$ 3,427,000
Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Land Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, measurement input	0.160		0.160		0.123
Measurement Input, Comparability Adjustment [Member] | Maximum [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, measurement input					0.1522
Measurement Input, Comparability Adjustment [Member] | Minimum [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, measurement input					(0.0366)
Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Real estate owned, measurement input					0.1100

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Estimated Fair Value of Finanical Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 140,793	$ 98,204	$ 86,934	$ 127,592
Financial assets
Securities, carrying amount	65,440	88,179
Loans receivable, net of allowance for loan losses, carrying amounts	1,213,948	1,323,793
FHLBC stock, carrying amount	7,490	8,026
Accrued interest receivable, carrying amount	4,763	4,952
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial assets
Securities, carrying amount	65,440	88,179
Loans Receivable, Fair Value Disclosure	1,222,391	1,315,855
Accounts Receivable, Fair Value Disclosure	4,763	4,952
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	140,793	98,204
Demand Deposit Accounts Fair Value Disclosure	208,347	230,041
Deposits Savings Deposits Fair Value Disclosure	149,431	152,334
Now Money Market Accounts		531,781
Now Money Market Accounts Fair Value Disclosure	511,774
Certificates Of Deposit Fair Value Disclosure	420,287	436,598
Short Term Borrowings Fair Value Disclosure	1,253	21,050
Accrued Liabilities, Fair Value Disclosure	154	291
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member]
Financial assets
Loans Receivable, Fair Value Disclosure		0
Accounts Receivable, Fair Value Disclosure		0
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	13,074	13,805
Demand Deposit Accounts Fair Value Disclosure		0
Deposits Savings Deposits Fair Value Disclosure		0
Certificates Of Deposit Fair Value Disclosure		0
Short Term Borrowings Fair Value Disclosure		0
Accrued Liabilities, Fair Value Disclosure		0
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Financial assets
Securities, carrying amount	65,440	88,179
Loans Receivable, Fair Value Disclosure	0	0
Accounts Receivable, Fair Value Disclosure		249
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	127,719	84,399
Demand Deposit Accounts Fair Value Disclosure	208,347	230,041
Deposits Savings Deposits Fair Value Disclosure	149,431	152,334
Now Money Market Accounts		531,781
Now Money Market Accounts Fair Value Disclosure	511,774
Certificates of Deposit, at Carrying Value	420,287
Certificates Of Deposit Fair Value Disclosure		436,598
Short-term Debt	798	21,050
Accrued Liabilities, Fair Value Disclosure	154	291
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Loans Receivable, Fair Value Disclosure	1,222,391	1,315,855
Accounts Receivable, Fair Value Disclosure	4,469	4,703
Reported Value Measurement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	140,793	98,204
Financial assets
Securities, carrying amount	65,440	88,179
FHLBC stock, carrying amount	7,490	8,026
Accrued interest receivable, carrying amount	264	4,952
Financial liabilities
Demand Deposit Accounts	208,347	230,041
Deposits, Savings Deposits	149,431	152,334
Now Money Market Accounts		531,781
Now Money Market Accounts Fair Value Disclosure	511,774
Certificates of Deposit, at Carrying Value	419,273	438,328
Short-term Debt	1,253	21,049
Accrued Interest Payable	154	291
Equity Funds [Member]
Financial assets
Securities, carrying amount	$ 0	$ 0

Revenue From Contracts With C_3

Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from External Customer [Line Items]
Income from product and service	$ 983	$ 1,003	$ 2,887	$ 2,970
Loan servicing fees	99	71	178	231
Mortgage brokerage and banking fees	28	46	77	226
Gain (loss) on sale of equity securities	0	0	295	(14)
Loss on sales of equity securities	0		0
Loss on disposal of other assets	0	0	0	93
Gain (Loss) on Disposition of Other Assets	0	0	(19)	0
Trust and insurance commissions and annuities income	198	207	627	670
Earnings on bank-owned life insurance	37	35	105	146
Bank-owned life insurance death benefit	0	0	0	1,389
Other	129	208	374	492
Total noninterest income	1,474	1,570	4,524	6,203
Credit and Debit Card
Revenue from External Customer [Line Items]
Income from product and service	$ 395	$ 382	$ 1,157	$ 1,136

Uncategorized Items - bfin-2019

Label	Element	Value
Additional Paid-in Capital [Member]
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 6,000