BankFinancial (BFIN) 10-Q 28 Oct 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 26, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,015
Entity Registrant Name	BankFinancial CORP
Entity Central Index Key	1,303,942
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		20,501,966
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and due from other financial institutions	$ 8,809	$ 9,693
Interest-bearing deposits in other financial institutions	52,661	49,888
Cash and cash equivalents	61,470	59,581
Securities, at fair value	104,242	121,174
Loans receivable, net of allowance for loan losses: September 30, 2015, $10,081 and December 31, 2014, $11,990	1,162,298	1,172,356
Other Real Estate Owned At Carrying Value	4,809	6,358
Stock in Federal Home Loan Bank, at cost	6,257	6,257
Premises and equipment, net	33,063	34,286
Accrued interest receivable	4,000	3,926
Core deposit intangible	1,441	1,855
Bank owned life insurance	22,335	22,193
Deferred Tax Assets, Net, Current	27,733	31,643
Other assets	3,775	5,781
Total assets	1,431,423	1,465,410
Deposits
Noninterest-bearing	233,192	134,129
Interest-bearing	948,342	1,077,584
Total deposits	1,181,534	1,211,713
Borrowings	18,048	12,921
Advance payments by borrowers taxes and insurance	7,755	11,489
Accrued interest payable and other liabilities	11,012	13,166
Total liabilities	$ 1,218,349	$ 1,249,289
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; 20,501,966 shares issued at September 30, 2015 and 21,101,966 at December 31, 2014	205	211
Additional paid-in capital	186,992	193,845
Retained earnings (deficit)	34,815	31,584
Unearned Employee Stock Ownership Plan shares	(9,544)	(10,276)
Accumulated other comprehensive income	606	757
Total stockholders' equity	213,074	216,121
Total liabilities and stockholders' equity	$ 1,431,423	$ 1,465,410

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 10,081	$ 11,990
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	20,501,966	21,101,966

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest and dividend income
Loans, including fees	$ 11,792	$ 11,983	$ 35,451	$ 35,767
Securities	267	283	851	866
Other	88	102	249	303
Total interest income	12,147	12,368	36,551	36,936
Interest expense
Deposits	695	744	2,068	2,327
Borrowings	4	2	8	5
Total interest expense	699	746	2,076	2,332
Net interest income	11,448	11,622	34,475	34,604
Provision for (recovery of) loan losses	(956)	(1,413)	(2,168)	20
Net interest income	12,404	13,035	36,643	34,584
Noninterest income
Deposit service charges and fees	562	527	1,493	1,438
Other fee income	502	563	1,638	1,677
Insurance commissions and annuities income	68	106	217	279
Gain on sale of loans, net	37	39	92	107
Gain (Loss) on Sale of Securities, Net	0	0	0	(7)
Gain (Loss) on Disposition of Property	0	0	(1)	5
Loan servicing fees	85	102	271	310
Amortization and impairment of servicing assets	(50)	(32)	(107)	(112)
Bank Owned Life Insurance Income	48	57	142	182
Trust	172	171	529	505
Other	285	215	660	556
Total noninterest income	1,709	1,748	4,934	4,940
Noninterest expense
Compensation and benefits	5,329	5,492	16,188	17,046
Office occupancy and equipment	1,537	1,687	4,902	5,227
Advertising and public relations	212	272	783	741
Information technology	686	674	1,982	2,004
Supplies, telephone, and postage	393	394	1,189	1,169
Amortization of intangibles	136	143	414	435
Nonperforming asset management	244	418	442	619
Operations of other real estate owned	334	494	780	1,160
FDIC insurance premiums	202	208	699	1,157
Other	1,159	1,375	3,397	3,952
Total noninterest expense	10,232	11,157	30,776	33,510
Income (loss) before income taxes	3,881	3,626	10,801	6,014
Income tax expense (benefit)	1,532	36	4,242	78
Net income (loss)	$ 2,349	$ 3,590	$ 6,559	$ 5,936
Basic earnings per common share (usd per share)	$ 0.12	$ 0.17	$ 0.33	$ 0.29
Diluted loss per common share (usd per share)	$ 0.12	$ 0.17	$ 0.33	$ 0.29
Weighted average common shares outstanding (shares)	19,725,707	20,218,951	19,999,089	20,154,912
Diluted weighted average common shares outstanding (shares)	19,731,302	20,235,407	20,004,694	20,170,964

Consolidated Statements of Ope5

Consolidated Statements of Operations Consolidated Statements of Operations (parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Other than Temporary Impairment Losses, Investments, Reclassification Adjustment of Noncredit Portion Included in Net Income, Availabe-for-sale Securities, before Tax	$ 0	$ 0	$ 0	$ 7

Consolidated Statements Compreh

Consolidated Statements Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,349	$ 3,590	$ 6,559	$ 5,936
Unrealized holding gain (loss) arising during the period	(34)	(26)	(244)	(52)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	13		93
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	(21)	(26)	(151)	(52)
Other than Temporary Impairment Losses, Investments, Reclassification Adjustment of Noncredit Portion Included in Net Income, Availabe-for-sale Securities, before Tax	0	0	0	7
Other comprehensive loss, net of tax effect	(21)	(26)	(151)	(45)
Comprehensive income (loss)	$ 2,328	$ 3,564	$ 6,408	$ 5,891

Consolidated Statements of Chan

Consolidated Statements of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unearned Employee Stock Ownership Plan Shares [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2013	$ 175,627	$ 211	$ 193,594	$ (7,342)	$ (11,255)	$ 419
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,936	0	0	5,936	0	0
Other comprehensive income, net of tax effects	(45)	0	0	0	0	(45)
Nonvested stock awards-stock-based compensation expense	52	0	52	0	0	0
Cash dividends declared on common stock (2014: $0.05, 2015: $0.16, per share)	(1,055)	0	0	(1,055)	0	0
ESOP shares earned	761		28	0	733	0
Ending Balance at Sep. 30, 2014	181,276	211	193,674	(2,461)	(10,522)	374
Beginning Balance at Dec. 31, 2014	216,121	211	193,845	31,584	(10,276)	757
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,559	0	0	6,559	0	0
Other comprehensive income, net of tax effects	(151)	0	0	0	0	(151)
Stock Repurchased During Period, Value	(7,388)	(6)	(7,382)
Nonvested stock awards-stock-based compensation expense	351	0	351	0	0	0
Cash dividends declared on common stock (2014: $0.05, 2015: $0.16, per share)	3,328			3,328
ESOP shares earned	910	0	178	0	732	0
Ending Balance at Sep. 30, 2015	$ 213,074	$ 205	$ 186,992	$ 34,815	$ (9,544)	$ 606

Consolidated Statements of Cha8

Consolidated Statements of Changes In Stockholders' Equity Consolidated Statements of Changes in Stockholders' Equity (parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity (parenthetical) [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.16	$ 0.05
Stock Repurchased During Period, Shares	600,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flow - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net income (loss)	$ 6,559	$ 5,936
Adjustments to reconcile to net loss to net cash from operating activities
Provision for (recovery of) loan losses	(2,168)	20
ESOP shares earned	910	761
Stock-based compensation expense	351	52
Depreciation and amortization	2,754	2,864
Amortization of premiums and discounts on securities and loans	(214)	(325)
Amortization Of Intangibles	414	435
Amortization and impairment of servicing assets	107	112
Net change in net deferred loan origination costs	(384)	(99)
Net loss on sale of other real estate owned	(91)	(40)
Net gain on sale of loans	(92)	(107)
Gain (Loss) on Sale of Securities, Net	0	7
Gain (Loss) on Sale of Property Plant Equipment	1	(5)
Loans originated for sale	(3,593)	(3,492)
Proceeds from sale of loans	3,685	3,599
REO valuation adjustments	467	392
Net change in:
Accrued interest receivable	(74)	343
Earnings on bank owned life insurance	(142)	(182)
Other assets	5,906	3,638
Accrued interest payable and other liabilities	(2,154)	(13)
Net cash from operating activities	12,242	13,896
Cash flows from investing activities
Payments to Acquire Federal Home Loan Bank Stock	0	189
Securities
Proceeds from maturities	53,410	43,924
Proceeds from principal repayments	5,888	5,259
Proceeds from Sale of Available-for-sale Securities	0	3,663
Purchases of securities	(42,643)	(57,023)
Payments for Participation Liabilities	3,350
Loans receivable
Principal payments on loans receivable	333,644	322,271
Originated for investment	(326,624)	(363,909)
Proceeds from sale of other real estate owned	2,487	3,790
Purchases of premises and equipment, net	(363)	(362)
Net cash from (used in) investing activities	29,149	(42,576)
Cash flows from financing activities
Net change in deposits	(30,179)	(34,406)
Net change in borrowings	5,127	(221)
Net change in advance payments by borrowers for taxes and insurance	(3,734)	(3,670)
Payments for Repurchase of Common Stock	(7,388)
Payments of Ordinary Dividends, Common Stock	(3,328)	(1,055)
Net cash used in financing activities	(39,502)	(39,352)
Net change in cash and cash equivalents	1,889	(68,032)
Beginning cash and cash equivalents	59,581	160,957
Ending cash and cash equivalents	61,470	92,925
Supplemental disclosures of cash flow information:
Interest paid	2,113	2,344
Income taxes paid	262	114
Loans transferred to other real estate owned	$ 1,314	$ 3,836

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	9 Months Ended
	Sep. 30, 2015
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, F.S.B. (the “Bank”). Principles of Consolidation : The interim unaudited consolidated financial statements include the accounts of and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BF Asset Recovery Corporation (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. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three- and nine-month periods ended September 30, 2015 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2015. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“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 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. 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, 2014 , as filed with the Securities and Exchange Commission. Recent Accounti

Earnings Per Share (Notes)

Earnings Per Share (Notes)	9 Months Ended
	Sep. 30, 2015
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 unearned ESOP shares and 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 2015 2014 2015 2014 Net income available to common stockholders $ 2,349 $ 3,590 $ 6,559 $ 5,936 Average common shares outstanding 20,501,966 21,101,966 20,803,065 21,101,966 Less: Unearned ESOP shares (768,327 ) (866,193 ) (792,551 ) (926,705 ) Unvested restricted stock shares (7,932 ) (16,822 ) (11,425 ) (20,349 ) Weighted average common shares outstanding 19,725,707 20,218,951 19,999,089 20,154,912 Add - Net effect of dilutive stock options and unvested restricted stock 5,595 16,456 5,605 16,052 Diluted weighted average common shares outstanding 19,731,302 20,235,407 20,004,694 20,170,964 Basic earnings per common share $ 0.12 $ 0.17 $ 0.33 $ 0.29 Diluted earnings per common share $ 0.12 $ 0.17 $ 0.33 $ 0.29 Stock options for 1,215,697 shares of common stock were not considered in computing diluted earnings per share for the period ended September 30, 2015 because they were antidilutive.

Securities (Notes)

Securities (Notes)	9 Months Ended
	Sep. 30, 2015
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 September 30, 2015 Certificates of deposit $ 76,194 $ — $ — $ 76,194 Equity mutual fund 500 12 — 512 Mortgage-backed securities - residential 18,944 957 (25 ) 19,876 Collateralized mortgage obligations - residential 7,596 49 (10 ) 7,635 SBA-guaranteed loan participation certificates 25 — — 25 $ 103,259 $ 1,018 $ (35 ) $ 104,242 December 31, 2014 Certificates of deposit $ 86,049 $ — $ — $ 86,049 Equity mutual fund 500 9 — 509 Mortgage-backed securities - residential 23,433 1,218 (40 ) 24,611 Collateralized mortgage obligations - residential 9,936 53 (13 ) 9,976 SBA-guaranteed loan participation certificates 29 — — 29 $ 119,947 $ 1,280 $ (53 ) $ 121,174 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 U.S. government has affirmed its commitment to support. All securities reflected in the preceding table were classified as available-for-sale at September 30, 2015 and December 31, 2014 . The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date, if any, 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, 2015 Amortized Cost Fair Value Due in one year or less $ 76,194 $ 76,194 Equity mutual fund 500 512 Mortgage-backed securities - residential 18,944 19,876 Collateralized mortgage obligations - residential 7,596 7,635 SBA-guaranteed loan participation certificates 25 25 $ 103,259 $ 104,242 Sales of securities were as follows: Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds $ — $ — $ — $ 3,663 Gross gains — — — — Gross losses — — — 7 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, 2015 Mortgage-backed securities - residential $ — $ — $ 1,743 $ (25 ) $ 1,743 $ (25 ) Collateralized mortgage obligations - residential — — 1,405 (10 ) 1,405 (10 ) $ — $ — $ 3,148 $ (35 ) $ 3,148 $ (35 ) December 31, 2014 Mortgage-backed securities - residential $ — $ — $ 2,126 $ (40 ) $ 2,126 $ (40 ) Collateralized mortgage obligations - residential — — 1,847 (13 ) 1,847 (13 ) $ — $ — $ 3,973 $ (53 ) $ 3,973 $ (53 ) 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 residential mortgage-backed securities and certain collateralized mortgage obligations that the Company holds in its investment portfolio were in an unrealized loss position at September 30, 2015 , 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.

Loans Receivable (Notes)

Loans Receivable (Notes)	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Loans receivable are as follows: September 30, 2015 December 31, 2014 One-to-four family residential real estate $ 164,124 $ 180,337 Multi-family mortgage 478,057 480,349 Nonresidential real estate 223,528 234,500 Construction and land 1,322 1,885 Commercial loans 80,216 66,882 Commercial leases 221,622 217,143 Consumer 1,927 2,051 1,170,796 1,183,147 Net deferred loan origination costs 1,583 1,199 Allowance for loan losses (10,081 ) (11,990 ) Loans, net $ 1,162,298 $ 1,172,356 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, 2015 One-to-four family residential real estate $ — $ 1,601 $ 1,601 $ 3,353 $ 160,771 $ 164,124 Multi-family mortgage 3 3,885 3,888 3,487 474,570 478,057 Nonresidential real estate 66 2,629 2,695 4,097 219,431 223,528 Construction and land — 74 74 — 1,322 1,322 Commercial loans 17 772 789 75 80,141 80,216 Commercial leases — 1,006 1,006 — 221,622 221,622 Consumer — 28 28 — 1,927 1,927 $ 86 $ 9,995 $ 10,081 $ 11,012 $ 1,159,784 1,170,796 Net deferred loan origination costs 1,583 Allowance for loan losses (10,081 ) Loans, net $ 1,162,298 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, 2014 One-to-four family residential real estate $ 8 $ 2,140 $ 2,148 $ 4,174 $ 176,163 $ 180,337 Multi-family mortgage 226 4,979 5,205 5,282 475,067 480,349 Nonresidential real estate 236 2,704 2,940 4,690 229,810 234,500 Construction and land — 80 80 — 1,885 1,885 Commercial loans — 554 554 76 66,806 66,882 Commercial leases — 1,009 1,009 — 217,143 217,143 Consumer — 54 54 — 2,051 2,051 $ 470 $ 11,520 $ 11,990 $ 14,222 $ 1,168,925 1,183,147 Net deferred loan origination costs 1,199 Allowance for loan losses (11,990 ) Loans, net $ 1,172,356 Activity in the allowance for loan losses is as follows: Three Months Ended Nine Months Ended 2015 2014 2015 2014 Beginning balance $ 10,810 $ 14,452 $ 11,990 $ 14,154 Loans charged off: One-to-four family residential real estate (125 ) (298 ) (327 ) (644 ) Multi-family mortgage (9 ) (97 ) (189 ) (781 ) Nonresidential real estate (26 ) (695 ) (289 ) (1,461 ) Construction and land — — — (1 ) Commercial loans — (78 ) (98 ) (100 ) Commercial leases — (8 ) — (8 ) Consumer (3 ) — (11 ) (10 ) (163 ) (1,176 ) (914 ) (3,005 ) Recoveries: One-to-four family residential real estate 16 26 295 134 Multi-family mortgage 169 11 177 31 Nonresidential real estate 24 116 49 400 Construction and land 38 29 44 287 Commercial loans 143 1,005 606 1,027 Commercial leases — — 1 — Consumer — 1 1 3 390 1,188 1,173 1,882 Net recoveries (charge-offs) 227 12 259 (1,123 ) Provision for (recovery of) loan losses (956 ) (1,413 ) (2,168 ) 20 Ending balance $ 10,081 $ 13,051 $ 10,081 $ 13,051 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, 2015 One-to-four family residential real estate $ 3,139 $ 2,539 $ — One-to-four family residential real estate – non owner occupied 359 413 — Multi-family mortgage 1,482 1,399 — Nonresidential real estate 2,575 2,263 — Commercial loans – secured 76 75 — $ 7,631 $ 6,689 $ — December 31, 2014 One-to-four family residential real estate $ 4,793 $ 4,210 $ — One-to-four family residential real estate – non owner occupied 291 198 — Multi-family mortgage 5,638 4,481 — Nonresidential real estate 4,023 3,245 — Commercial loans – secured 76 76 — Consumer 3 3 — $ 14,824 $ 12,213 $ — Nonaccrual loans and impaired loans are defined differently. Some loans may be included in both categories, and some 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 $275,000 and $464,000 at September 30, 2015 and December 31, 2014 , respectively. When a loan is on non-accrual status and the ultimate collectability of the total principal of the 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. The following tables present the aging of the recorded investment of loans at September 30, 2015 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 $ 61 $ 376 $ 2,272 $ 2,709 $ 117,063 $ 119,772 One-to-four family residential real estate - non-owner occupied 3 — 413 416 43,895 44,311 Multi-family mortgage 517 178 882 1,577 317,154 318,731 Wholesale commercial lending — 399 — 399 156,295 156,694 Nonresidential real estate — — 2,262 2,262 219,879 222,141 Construction — — — — 31 31 Land — — — — 1,289 1,289 Commercial loans: Secured — — 75 75 22,731 22,806 Unsecured — — — — 3,217 3,217 Municipal — — — — 1,610 1,610 Warehouse lines — — — — 15,406 15,406 Health care — — — — 20,030 20,030 Aviation — — — — 1,023 1,023 Other — — — — 16,425 16,425 Commercial leases: Investment rated commercial leases — 20 — 20 159,008 159,028 Below investment grade — — — — 7,377 7,377 Non-rated — 86 — 86 46,341 46,427 Lease pools — — — — 10,257 10,257 Consumer — — — — 1,935 1,935 $ 581 $ 1,059 $ 5,904 $ 7,544 $ 1,160,966 $ 1,168,510 The following tables present the aging of the recorded investment of loans at December 31, 2014 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 $ 1,415 $ 276 $ 3,844 $ 5,535 $ 126,054 $ 131,589 One-to-four family residential real estate - non-owner occupied 320 165 198 683 47,350 48,033 Multi-family mortgage 2,314 1,187 3,363 6,864 334,173 341,037 Wholesale commercial lending — — — — 135,395 135,395 Nonresidential real estate 376 444 3,245 4,065 227,078 231,143 Construction — — — — 63 63 Land — — — — 1,814 1,814 Commercial loans: Secured — — 76 76 11,863 11,939 Unsecured — 1 — 1 1,884 1,885 Municipal — — — — 2,243 2,243 Warehouse lines — — — — 14,362 14,362 Health care — — — — 24,154 24,154 Aviation — — — — 1,111 1,111 Other — — — — 11,339 11,339 Commercial leases: Investment rated commercial leases 426 — — 426 160,830 161,256 Below investment grade 136 — — 136 11,246 11,382 Non-rated 8 — — 8 35,672 35,680 Lease pools — — — — 10,180 10,180 Consumer 18 1 3 22 2,038 2,060 $ 5,013 $ 2,074 $ 10,729 $ 17,816 $ 1,158,849 $ 1,176,665 The Company evaluates loan extensions or modifications in accordance with FASB ASC 310–40 with respect to the classification of the loan as a TDR. In general, if the Company grants a loan extension or modification to a borrower 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 $3.0 million of TDRs at September 30, 2015 and December 31, 2014 . There were no specific valuation reserves allocated to those loans at September 30, 2015 and $38,000 in specific valuation reserves were allocated at December 31, 2014 . 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, 2015 December 31, 2014 One-to-four family residential real estate $ 1,657 $ 1,917 Multi-family mortgage 1,126 510 Troubled debt restructured loans – accrual loans 2,783 2,427 One-to-four family residential real estate 208 230 Multi-family mortgage — 346 Troubled debt restructured loans – nonaccrual loans 208 576 Total troubled debt restructured loans $ 2,991 $ 3,003 During the three and nine months ending September 30, 2015 and 2014 , the terms of certain loans were modified and classified as TDRs. The modification of the terms of such loans included one or a combination of the following: a reduction of the stated interest rate of the loan; an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; or a permanent reduction of the recorded investment in the loan. The following tables present TDR activity: Three Months Ended September 30, 2015 2014 Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment One-to-four family residential real estate 5 $ 338 $ 211 1 $ 345 $ 345 Commercial loans - secured — — — 1 210 5 Total 5 $ 338 $ 211 2 $ 555 $ 350 Due to reduction in interest rate Due to extension of maturity date Due to permanent reduction in recorded investment Total For the Three Months Ended September 30, 2015 One-to-four family residential real estate $ — $ 79 $ 132 $ 211 For the Three Months Ended September 30, 2014 One-to-four family residential real estate $ — $ 345 $ — $ 345 Commercial loans - secured — — 5 5 Total $ — $ 345 $ 5 $ 350 The TDRs described above had no impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in charge-offs of $127,000 for the three months ended September 30, 2015 . The TDRs had no impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in $205,000 of charge-offs for the three months ended September 30, 2014 . Nine Months Ended September 30, 2015 2014 Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment One-to-four family residential real estate 6 $ 401 $ 274 4 $ 485 $ 444 Commercial loans - secured — — — 1 210 5 Total 6 $ 401 $ 274 5 $ 695 $ 449 Due to reduction in interest rate Due to extension of maturity date Due to permanent reduction in recorded investment Total For the Nine Months Ended September 30, 2015 One-to-four family residential real estate $ — $ 142 $ 132 $ 274 For the Nine Months Ended September 30, 2014 One-to-four family residential real estate $ 19 $ 373 $ 52 $ 444 Commercial loans - secured — — 5 5 Total $ 19 $ 373 $ 57 $ 449 The TDRs described above had no material impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in $127,000 of charge-offs for the nine months ended September 30, 2015 . The TDRs decreased interest income by $1,000 , resulted in no change to the allowance for loan losses allocated and resulted in charge-offs of $246,000 for the nine months ended September 30, 2014 . The following table presents TDRs for which there was a payment default during the nine months ending September 30, 2015 and 2014 within twelve months following the modification. 2015 2014 Number of loans Recorded investment Number of loans Recorded investment One-to-four family residential real estate 1 $ 27 1 $ 28 A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. The TDRs for which there was a payment default resulted in no change to the allowance for loan losses allocated and resulted in no charge-offs during the nine months ending September 30, 2015 and September 30, 2014 . There were certain other loan modifications during the three and nine months ending September 30, 2015 and 2014 that did not meet the definition of a TDR. These loans had a total recorded investment of $2.6 million and $1.6 million at September 30, 2015 and 2014 , respectively. The modification of these loans involved either a modification of the terms of a loan to borrowers who were not experiencing financial difficulties or a delay in a payment that was considered to be insignificant. In order 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. 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 as Nonaccrual has all the weaknesses inherent in one classified as 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, 2015 , based on the most recent analysis performed, 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 $ 117,242 $ — $ 429 $ 2,114 $ 119,785 One-to-four family residential real estate - non-owner occupied 43,705 223 — 411 44,339 Multi-family mortgage 312,554 456 5,741 1,404 320,155 Wholesale commercial lending 157,389 — 513 — 157,902 Nonresidential real estate 197,920 18,065 5,259 2,284 223,528 Construction 31 — — — 31 Land 472 — 819 — 1,291 Commercial loans: Secured 22,509 — 148 75 22,732 Unsecured 2,651 — 555 — 3,206 Municipal 1,599 — — — 1,599 Warehouse lines 16,369 — — — 16,369 Health care 19,995 — — — 19,995 Aviation 1,021 — — — 1,021 Other 15,294 — — — 15,294 Commercial leases: Investment rated commercial leases 157,893 — — — 157,893 Below investment grade 7,336 — — — 7,336 Non-rated 46,175 — — — 46,175 Lease pools 10,218 — — — 10,218 Consumer 1,927 — — — 1,927 Total $ 1,132,300 $ 18,744 $ 13,464 $ 6,288 $ 1,170,796 As of December 31, 2014 , based on the most recent analysis performed, 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 $ 126,102 $ 615 $ 1,046 $ 4,228 $ 131,991 One-to-four family residential real estate - non-owner occupied 46,253 931 964 198 48,346 Multi-family mortgage 336,557 609 3,430 4,515 345,111 Wholesale commercial lending 134,719 — 519 — 135,238 Nonresidential real estate 223,385 1,170 6,698 3,247 234,500 Construction 60 — — — 60 Land 1,212 — 613 — 1,825 Commercial loans: Secured 11,863 — 7 76 11,946 Unsecured 1,147 40 698 — 1,885 Municipal 2,213 — — — 2,213 Warehouse lines 11,296 — — — 11,296 Health care 24,127 — — — 24,127 Aviation 1,108 — — — 1,108 Other 14,307 — — — 14,307 Commercial leases: Investment rated commercial leases 160,208 — — — 160,208 Below investment grade 11,309 — — — 11,309 Non-rated 35,473 — — — 35,473 Lease pools 10,153 — — — 10,153 Consumer 2,048 — — 3 2,051 Total $ 1,153,540 $ 3,365 $ 13,975 $ 12,267 $ 1,183,147

Fair Value (Notes)

Fair Value (Notes)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
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 marketable equity securities are generally determined by quoted prices, in active markets, for each specific security (Level 1). If Level 1 measurement inputs are not available for a marketable equity security, we determine its fair value based on the quoted price of a similar security traded in an active market (Level 2). 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). 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. Mortgage Servicing Rights : On a quarterly basis, loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. The fair values of mortgage servicing rights are based on a valuation model that calculates the present value of estimated net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income. The Company is able to compare the valuation model inputs and results to widely available published industry data for reasonableness (Level 2). 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, 2015 Securities: Certificates of deposit $ — $ 76,194 $ — $ 76,194 Equity mutual fund 512 — — 512 Mortgage-backed securities – residential — 19,876 — 19,876 Collateralized mortgage obligations – residential — 7,635 — 7,635 SBA-guaranteed loan participation certificates — 25 — 25 $ 512 $ 103,730 $ — $ 104,242 December 31, 2014 Securities: Certificates of deposit $ — $ 86,049 $ — $ 86,049 Equity mutual fund 509 — — 509 Mortgage-backed securities - residential — 24,611 — 24,611 Collateralized mortgage obligations – residential — 9,976 — 9,976 SBA-guaranteed loan participation certificates — 29 — 29 $ 509 $ 120,665 $ — $ 121,174 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, 2015 Impaired loans: Multi-family mortgage $ — $ — $ 230 $ 230 Nonresidential real estate — — 1,323 1,323 Commercial loans — — 58 58 $ — $ — $ 1,611 $ 1,611 Other real estate owned: One-to-four family residential real estate $ — $ — $ 42 $ 42 Multi-family mortgage — — 962 962 Nonresidential real estate — — 107 107 Land — — 749 749 $ — $ — $ 1,860 $ 1,860 Mortgage servicing rights $ — $ 297 $ — $ 297 December 31, 2014 Impaired loans: One-to-four family residential real estate $ — $ — $ 70 $ 70 Multi-family mortgage — — 1,905 1,905 Nonresidential real estate — — 2,369 2,369 $ — $ — $ 4,344 $ 4,344 Other real estate owned: One-to-four family residential real estate $ — $ — $ 55 $ 55 Multi-family mortgage — — 1,265 1,265 Nonresidential real estate — — 126 126 Land — — 753 753 $ — $ — $ 2,199 $ 2,199 Mortgage servicing rights $ — $ 160 $ — $ 160 Impaired loans, which are measured for impairment using the fair value of the collateral for collateral–dependent loans and have specific valuation allowances, had a carrying amount of $1.7 million and a valuation allowance of $86,000 at September 30, 2015 , compared to a carrying amount of $4.8 million and a valuation allowance of $470,000 at December 31, 2014 , resulting in a decrease in the provision for loan losses of $384,000 for the nine months ended September 30, 2015 , and an increase in the provision for loan losses of $345,000 for the nine months ended September 30, 2014 . Other real estate owned ("OREO"), which is carried at the lower of cost or fair value less costs to sell, had a carrying value of $2.9 million and a valuation allowance of $1.0 million at September 30, 2015 , compared to a carrying value of $3.0 million and a valuation allowance of $803,000 at December 31, 2014 . There were $467,000 of valuation adjustments of OREO recorded for the nine months ended September 30, 2015 , and $392,000 of valuation adjustments of OREO recorded for the nine months ended September 30, 2014 . A pre-tax provision of $2,000 on our mortgage servicing rights portfolio was included in noninterest income for the nine months ended September 30, 2015 , compared to a pre-tax provision of $6,000 for the same period in 2014 . 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, 2015 : Fair Value Valuation Technique(s) Significant Unobservable Input(s) Range (Weighted Average) Impaired loans: Multi-family mortgage loans $ 230 Sales comparison Comparison between sales and income approaches 10% Income approach Cap Rate 10% Nonresidential real estate loans 1,323 Sales comparison Comparison between sales and income approaches -25.74% to 1.24% Income approach Cap Rate 8.5% Commercial loans 58 Sales comparison Discount applied to valuation 34.3% Impaired loans $ 1,611 Other real estate owned: One-to-four family residential real estate $ 42 Sales comparison Discount applied to valuation -0.35% to 2.8% Multi-family mortgage 962 Sales comparison Comparison between sales and income approaches -67.74% to 11.68% (7%) Nonresidential real estate loans 107 Sales comparison Comparison between sales and income approaches 58% Land 749 Sales comparison Discount applied to valuation -7.7% to 17.24% Other real estate owned $ 1,860 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 December 31, 2014 : Fair Value Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) Impaired loans One-to-four family residential real estate $ 70 Sales comparison Discount applied to valuation 4.8% Multi-family mortgage 1,905 Sales comparison Comparison between sales and income approaches -2.1%- 43.7% Income approach Cap Rate 9.6%-13.8% Nonresidential real estate 2,369 Sales comparison Comparison between sales and income approaches -2.1%-33.9% Income approach Cap Rate 10%-11% $ 4,344 Other real estate owned One-to-four family residential real estate $ 55 Sales comparison Discount applied to valuation 6.3%-7.7% Multi-family mortgage 1,265 Sales comparison Comparison between sales and income approaches -6.6%-13.5% (0.4%) Nonresidential real estate 126 Sales comparison Comparison between sales and income approaches 32.3% Land 753 Sales comparison Discount applied to valuation -21.9%-4.2% $ 2,199 The carrying amount and estimated fair value of financial instruments are as follows: Fair Value Measurements at September 30, 2015 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 61,470 $ 8,809 $ 52,661 $ — $ 61,470 Securities 104,242 512 103,730 — 104,242 Loans receivable, net of allowance for loan losses 1,162,298 — 1,159,706 1,611 1,161,317 FHLBC stock 6,257 — — — N/A Accrued interest receivable 4,000 — 4,000 — 4,000 Financial liabilities Noninterest-bearing demand deposits $ 233,192 $ — $ 233,192 $ — $ 233,192 Savings deposits 152,585 — 152,585 — 152,585 NOW and money market accounts 572,860 — 572,860 — 572,860 Certificates of deposit 222,897 — 222,878 — 222,878 Borrowings 18,048 — 18,049 — 18,049 Accrued interest payable 46 — 46 — 46 Fair Value Measurements at December 31, 2014 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 59,581 $ 9,693 $ 49,888 $ — $ 59,581 Securities 121,174 509 120,665 — 121,174 Loans receivable, net of allowance for loan losses 1,172,356 — 1,166,181 4,344 1,170,525 FHLBC stock 6,257 — — — N/A Accrued interest receivable 3,926 — 3,926 — 3,926 Financial liabilities Noninterest-bearing demand deposits $ 134,129 $ — $ 134,129 $ — $ 134,129 Savings deposits 154,532 — 154,532 — 154,532 NOW and money market accounts 690,193 — 690,193 — 690,193 Certificates of deposit 232,859 — 232,588 — 232,588 Borrowings 12,921 — 12,908 — 12,908 Accrued interest payable 89 — 89 — 89 For purposes of the above table, the following assumptions were used: Cash and Cash Equivalents : The estimated fair values for cash and cash equivalents are based on their carrying value due to the short-term nature of these assets. Loans : The estimated fair value for loans has been determined by calculating the present value of future cash flows based on the current rate the Company would charge for similar loans with similar maturities, applied for an estimated time period until the loan is assumed to be repriced or repaid. The estimated fair values of loans held for sale are based on quoted market prices. FHLBC Stock : It is not practicable to determine the fair value of FHLBC stock due to the restrictions placed on its transferability. Deposit Liabilities : The estimated fair value for certificates of deposit has been determined by calculating the present value of future cash flows based on estimates of rates the Company would pay on such deposits, applied for the time period until maturity. The estimated fair values of noninterest-bearing demand, NOW, money market, and savings deposits are assumed to approximate their carrying values as management establishes rates on these deposits at a level that approximates the local market area. Additionally, these deposits can be withdrawn on demand. Borrowings : The estimated fair values of advances from the FHLBC and notes payable are based on current market rates for similar financing. The estimated fair value of securities sold under agreements to repurchase is assumed to equal its carrying value due to the short-term nature of the liability. Accrued Interest : The estimated fair values of accrued interest receivable and payable are assumed to equal their carrying value. Off - Balance-Sheet Instruments : Off-balance-sheet items consist principally of unfunded loan commitments, standby letters of credit, and unused lines of credit. The estimated fair values of unfunded loan commitments, standby letters of credit, and unused lines of credit are not material. 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.

Summary of Significant Accoun15

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
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, F.S.B. (the “Bank”). Principles of Consolidation : The interim unaudited consolidated financial statements include the accounts of and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BF Asset Recovery Corporation (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. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three- and nine-month periods ended September 30, 2015 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2015. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“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 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. 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, 2014 , as filed with the Securities and Exchange Commission. Recent Accounti
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, F.S.B. (the “Bank”).
Principles of Consolidation	Principles of Consolidation : The interim unaudited consolidated financial statements include the accounts of and transactions of BankFinancial Corporation, the Bank, and the Bank’s wholly-owned subsidiaries, Financial Assurance Services, Inc. and BF Asset Recovery Corporation (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. All significant intercompany accounts and transactions have been eliminated. The results of operations for the three- and nine-month periods ended September 30, 2015 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2015. Certain information and note disclosures normally included in financial statements prepared in conformity with accounting principles generally accepted in the United States of America (“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 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 $275,000 and $464,000 at September 30, 2015 and December 31, 2014 , respectively. When a loan is on non-accrual status and the ultimate collectability of the total principal of the 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, 2014 , as filed with the Securities and Exchange Commission.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2014, the FASB amended existing guidance to clarify when a creditor should derecognize a loan receivable and recognize a collateral asset. An in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendment requires interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. This amendment is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this standard did not have a material impact on the Company’s results of operation or financial position. In May 2014, the FASB issued an update (ASU No. 2014-09, Revenue from Contracts with Customers) creating FASB Topic 606, Revenue from Contracts with Customers. The guidance in this update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The amendments in this update will become effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. We are currently evaluating the impact of adopting the new guidance on the consolidated financial statements. In June 2014, the FASB amended existing guidance related to repurchase-to-maturity transactions, repurchase financings, and disclosures (ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures). These amendments align the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. Going forward, these transactions would all be accounted for as secured borrowings. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. These amendments require a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. These amendments also require expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. These amendments are effective for the first interim or annual period beginning after December 15, 2014. In addition, for public companies, the disclosure for certain transactions accounted for as a sale is effective for the first interim or annual period beginning on or after December 15, 2014, and the disclosure for transactions accounted for as secured borrowings is required for annual periods beginning after December 15, 2014, and interim periods beginning after March 15, 2015. The adoption of this standard did not have a material effect on the Company’s operating results or financial condition, but an additional disclosure has been added to the financial statements.

Summary of Significant Accoun16

Summary of Significant Accounting Policies New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2015
Text Block [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2014, the FASB amended existing guidance to clarify when a creditor should derecognize a loan receivable and recognize a collateral asset. An in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendment requires interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. This amendment is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this standard did not have a material impact on the Company’s results of operation or financial position. In May 2014, the FASB issued an update (ASU No. 2014-09, Revenue from Contracts with Customers) creating FASB Topic 606, Revenue from Contracts with Customers. The guidance in this update affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (for example, insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The amendments in this update will become effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. We are currently evaluating the impact of adopting the new guidance on the consolidated financial statements. In June 2014, the FASB amended existing guidance related to repurchase-to-maturity transactions, repurchase financings, and disclosures (ASU 2014-11, Transfers and Servicing (Topic 860) - Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures). These amendments align the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. Going forward, these transactions would all be accounted for as secured borrowings. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. These amendments require a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. These amendments also require expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. These amendments are effective for the first interim or annual period beginning after December 15, 2014. In addition, for public companies, the disclosure for certain transactions accounted for as a sale is effective for the first interim or annual period beginning on or after December 15, 2014, and the disclosure for transactions accounted for as secured borrowings is required for annual periods beginning after December 15, 2014, and interim periods beginning after March 15, 2015. The adoption of this standard did not have a material effect on the Company’s operating results or financial condition, but an additional disclosure has been added to the financial statements.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
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 unearned ESOP shares and 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 2015 2014 2015 2014 Net income available to common stockholders $ 2,349 $ 3,590 $ 6,559 $ 5,936 Average common shares outstanding 20,501,966 21,101,966 20,803,065 21,101,966 Less: Unearned ESOP shares (768,327 ) (866,193 ) (792,551 ) (926,705 ) Unvested restricted stock shares (7,932 ) (16,822 ) (11,425 ) (20,349 ) Weighted average common shares outstanding 19,725,707 20,218,951 19,999,089 20,154,912 Add - Net effect of dilutive stock options and unvested restricted stock 5,595 16,456 5,605 16,052 Diluted weighted average common shares outstanding 19,731,302 20,235,407 20,004,694 20,170,964 Basic earnings per common share $ 0.12 $ 0.17 $ 0.33 $ 0.29 Diluted earnings per common share $ 0.12 $ 0.17 $ 0.33 $ 0.29 Stock options for 1,215,697 shares of common stock were not considered in computing diluted earnings per share for the period ended September 30, 2015 because they were antidilutive.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2015
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 September 30, 2015 Certificates of deposit $ 76,194 $ — $ — $ 76,194 Equity mutual fund 500 12 — 512 Mortgage-backed securities - residential 18,944 957 (25 ) 19,876 Collateralized mortgage obligations - residential 7,596 49 (10 ) 7,635 SBA-guaranteed loan participation certificates 25 — — 25 $ 103,259 $ 1,018 $ (35 ) $ 104,242 December 31, 2014 Certificates of deposit $ 86,049 $ — $ — $ 86,049 Equity mutual fund 500 9 — 509 Mortgage-backed securities - residential 23,433 1,218 (40 ) 24,611 Collateralized mortgage obligations - residential 9,936 53 (13 ) 9,976 SBA-guaranteed loan participation certificates 29 — — 29 $ 119,947 $ 1,280 $ (53 ) $ 121,174 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 U.S. government has affirmed its commitment to support. All securities reflected in the preceding table were classified as available-for-sale at September 30, 2015 and December 31, 2014 . The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date, if any, 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, 2015 Amortized Cost Fair Value Due in one year or less $ 76,194 $ 76,194 Equity mutual fund 500 512 Mortgage-backed securities - residential 18,944 19,876 Collateralized mortgage obligations - residential 7,596 7,635 SBA-guaranteed loan participation certificates 25 25 $ 103,259 $ 104,242 Sales of securities were as follows: Three Months Ended Nine Months Ended 2015 2014 2015 2014 Proceeds $ — $ — $ — $ 3,663 Gross gains — — — — Gross losses — — — 7 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, 2015 Mortgage-backed securities - residential $ — $ — $ 1,743 $ (25 ) $ 1,743 $ (25 ) Collateralized mortgage obligations - residential — — 1,405 (10 ) 1,405 (10 ) $ — $ — $ 3,148 $ (35 ) $ 3,148 $ (35 ) December 31, 2014 Mortgage-backed securities - residential $ — $ — $ 2,126 $ (40 ) $ 2,126 $ (40 ) Collateralized mortgage obligations - residential — — 1,847 (13 ) 1,847 (13 ) $ — $ — $ 3,973 $ (53 ) $ 3,973 $ (53 ) 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 residential mortgage-backed securities and certain collateralized mortgage obligations that the Company holds in its investment portfolio were in an unrealized loss position at September 30, 2015 , 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.
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 September 30, 2015 Certificates of deposit $ 76,194 $ — $ — $ 76,194 Equity mutual fund 500 12 — 512 Mortgage-backed securities - residential 18,944 957 (25 ) 19,876 Collateralized mortgage obligations - residential 7,596 49 (10 ) 7,635 SBA-guaranteed loan participation certificates 25 — — 25 $ 103,259 $ 1,018 $ (35 ) $ 104,242 December 31, 2014 Certificates of deposit $ 86,049 $ — $ — $ 86,049 Equity mutual fund 500 9 — 509 Mortgage-backed securities - residential 23,433 1,218 (40 ) 24,611 Collateralized mortgage obligations - residential 9,936 53 (13 ) 9,976 SBA-guaranteed loan participation certificates 29 — — 29 $ 119,947 $ 1,280 $ (53 ) $ 121,174
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, if any, 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, 2015 Amortized Cost Fair Value Due in one year or less $ 76,194 $ 76,194 Equity mutual fund 500 512 Mortgage-backed securities - residential 18,944 19,876 Collateralized mortgage obligations - residential 7,596 7,635 SBA-guaranteed loan participation certificates 25 25 $ 103,259 $ 104,242
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, 2015 Mortgage-backed securities - residential $ — $ — $ 1,743 $ (25 ) $ 1,743 $ (25 ) Collateralized mortgage obligations - residential — — 1,405 (10 ) 1,405 (10 ) $ — $ — $ 3,148 $ (35 ) $ 3,148 $ (35 ) December 31, 2014 Mortgage-backed securities - residential $ — $ — $ 2,126 $ (40 ) $ 2,126 $ (40 ) Collateralized mortgage obligations - residential — — 1,847 (13 ) 1,847 (13 ) $ — $ — $ 3,973 $ (53 ) $ 3,973 $ (53 )

Loans Receivable (Tables)

Loans Receivable (Tables) - loan	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]		Loans receivable are as follows: September 30, 2015 December 31, 2014 One-to-four family residential real estate $ 164,124 $ 180,337 Multi-family mortgage 478,057 480,349 Nonresidential real estate 223,528 234,500 Construction and land 1,322 1,885 Commercial loans 80,216 66,882 Commercial leases 221,622 217,143 Consumer 1,927 2,051 1,170,796 1,183,147 Net deferred loan origination costs 1,583 1,199 Allowance for loan losses (10,081 ) (11,990 ) Loans, net $ 1,162,298 $ 1,172,356 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, 2015 One-to-four family residential real estate $ — $ 1,601 $ 1,601 $ 3,353 $ 160,771 $ 164,124 Multi-family mortgage 3 3,885 3,888 3,487 474,570 478,057 Nonresidential real estate 66 2,629 2,695 4,097 219,431 223,528 Construction and land — 74 74 — 1,322 1,322 Commercial loans 17 772 789 75 80,141 80,216 Commercial leases — 1,006 1,006 — 221,622 221,622 Consumer — 28 28 — 1,927 1,927 $ 86 $ 9,995 $ 10,081 $ 11,012 $ 1,159,784 1,170,796 Net deferred loan origination costs 1,583 Allowance for loan losses (10,081 ) Loans, net $ 1,162,298 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, 2014 One-to-four family residential real estate $ 8 $ 2,140 $ 2,148 $ 4,174 $ 176,163 $ 180,337 Multi-family mortgage 226 4,979 5,205 5,282 475,067 480,349 Nonresidential real estate 236 2,704 2,940 4,690 229,810 234,500 Construction and land — 80 80 — 1,885 1,885 Commercial loans — 554 554 76 66,806 66,882 Commercial leases — 1,009 1,009 — 217,143 217,143 Consumer — 54 54 — 2,051 2,051 $ 470 $ 11,520 $ 11,990 $ 14,222 $ 1,168,925 1,183,147 Net deferred loan origination costs 1,199 Allowance for loan losses (11,990 ) Loans, net $ 1,172,356 Activity in the allowance for loan losses is as follows: Three Months Ended Nine Months Ended 2015 2014 2015 2014 Beginning balance $ 10,810 $ 14,452 $ 11,990 $ 14,154 Loans charged off: One-to-four family residential real estate (125 ) (298 ) (327 ) (644 ) Multi-family mortgage (9 ) (97 ) (189 ) (781 ) Nonresidential real estate (26 ) (695 ) (289 ) (1,461 ) Construction and land — — — (1 ) Commercial loans — (78 ) (98 ) (100 ) Commercial leases — (8 ) — (8 ) Consumer (3 ) — (11 ) (10 ) (163 ) (1,176 ) (914 ) (3,005 ) Recoveries: One-to-four family residential real estate 16 26 295 134 Multi-family mortgage 169 11 177 31 Nonresidential real estate 24 116 49 400 Construction and land 38 29 44 287 Commercial loans 143 1,005 606 1,027 Commercial leases — — 1 — Consumer — 1 1 3 390 1,188 1,173 1,882 Net recoveries (charge-offs) 227 12 259 (1,123 ) Provision for (recovery of) loan losses (956 ) (1,413 ) (2,168 ) 20 Ending balance $ 10,081 $ 13,051 $ 10,081 $ 13,051 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, 2015 One-to-four family residential real estate $ 3,139 $ 2,539 $ — One-to-four family residential real estate – non owner occupied 359 413 — Multi-family mortgage 1,482 1,399 — Nonresidential real estate 2,575 2,263 — Commercial loans – secured 76 75 — $ 7,631 $ 6,689 $ — December 31, 2014 One-to-four family residential real estate $ 4,793 $ 4,210 $ — One-to-four family residential real estate – non owner occupied 291 198 — Multi-family mortgage 5,638 4,481 — Nonresidential real estate 4,023 3,245 — Commercial loans – secured 76 76 — Consumer 3 3 — $ 14,824 $ 12,213 $ — Nonaccrual loans and impaired loans are defined differently. Some loans may be included in both categories, and some 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 $275,000 and $464,000 at September 30, 2015 and December 31, 2014 , respectively. When a loan is on non-accrual status and the ultimate collectability of the total principal of the 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. The following tables present the aging of the recorded investment of loans at September 30, 2015 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 $ 61 $ 376 $ 2,272 $ 2,709 $ 117,063 $ 119,772 One-to-four family residential real estate - non-owner occupied 3 — 413 416 43,895 44,311 Multi-family mortgage 517 178 882 1,577 317,154 318,731 Wholesale commercial lending — 399 — 399 156,295 156,694 Nonresidential real estate — — 2,262 2,262 219,879 222,141 Construction — — — — 31 31 Land — — — — 1,289 1,289 Commercial loans: Secured — — 75 75 22,731 22,806 Unsecured — — — — 3,217 3,217 Municipal — — — — 1,610 1,610 Warehouse lines — — — — 15,406 15,406 Health care — — — — 20,030 20,030 Aviation — — — — 1,023 1,023 Other — — — — 16,425 16,425 Commercial leases: Investment rated commercial leases — 20 — 20 159,008 159,028 Below investment grade — — — — 7,377 7,377 Non-rated — 86 — 86 46,341 46,427 Lease pools — — — — 10,257 10,257 Consumer — — — — 1,935 1,935 $ 581 $ 1,059 $ 5,904 $ 7,544 $ 1,160,966 $ 1,168,510 The following tables present the aging of the recorded investment of loans at December 31, 2014 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 $ 1,415 $ 276 $ 3,844 $ 5,535 $ 126,054 $ 131,589 One-to-four family residential real estate - non-owner occupied 320 165 198 683 47,350 48,033 Multi-family mortgage 2,314 1,187 3,363 6,864 334,173 341,037 Wholesale commercial lending — — — — 135,395 135,395 Nonresidential real estate 376 444 3,245 4,065 227,078 231,143 Construction — — — — 63 63 Land — — — — 1,814 1,814 Commercial loans: Secured — — 76 76 11,863 11,939 Unsecured — 1 — 1 1,884 1,885 Municipal — — — — 2,243 2,243 Warehouse lines — — — — 14,362 14,362 Health care — — — — 24,154 24,154 Aviation — — — — 1,111 1,111 Other — — — — 11,339 11,339 Commercial leases: Investment rated commercial leases 426 — — 426 160,830 161,256 Below investment grade 136 — — 136 11,246 11,382 Non-rated 8 — — 8 35,672 35,680 Lease pools — — — — 10,180 10,180 Consumer 18 1 3 22 2,038 2,060 $ 5,013 $ 2,074 $ 10,729 $ 17,816 $ 1,158,849 $ 1,176,665 The Company evaluates loan extensions or modifications in accordance with FASB ASC 310–40 with respect to the classification of the loan as a TDR. In general, if the Company grants a loan extension or modification to a borrower 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 $3.0 million of TDRs at September 30, 2015 and December 31, 2014 . There were no specific valuation reserves allocated to those loans at September 30, 2015 and $38,000 in specific valuation reserves were allocated at December 31, 2014 . 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, 2015 December 31, 2014 One-to-four family residential real estate $ 1,657 $ 1,917 Multi-family mortgage 1,126 510 Troubled debt restructured loans – accrual loans 2,783 2,427 One-to-four family residential real estate 208 230 Multi-family mortgage — 346 Troubled debt restructured loans – nonaccrual loans 208 576 Total troubled debt restructured loans $ 2,991 $ 3,003 During the three and nine months ending September 30, 2015 and 2014 , the terms of certain loans were modified and classified as TDRs. The modification of the terms of such loans included one or a combination of the following: a reduction of the stated interest rate of the loan; an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; or a permanent reduction of the recorded investment in the loan. The following tables present TDR activity: Three Months Ended September 30, 2015 2014 Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment One-to-four family residential real estate 5 $ 338 $ 211 1 $ 345 $ 345 Commercial loans - secured — — — 1 210 5 Total 5 $ 338 $ 211 2 $ 555 $ 350 Due to reduction in interest rate Due to extension of maturity date Due to permanent reduction in recorded investment Total For the Three Months Ended September 30, 2015 One-to-four family residential real estate $ — $ 79 $ 132 $ 211 For the Three Months Ended September 30, 2014 One-to-four family residential real estate $ — $ 345 $ — $ 345 Commercial loans - secured — — 5 5 Total $ — $ 345 $ 5 $ 350 The TDRs described above had no impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in charge-offs of $127,000 for the three months ended September 30, 2015 . The TDRs had no impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in $205,000 of charge-offs for the three months ended September 30, 2014 . Nine Months Ended September 30, 2015 2014 Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment One-to-four family residential real estate 6 $ 401 $ 274 4 $ 485 $ 444 Commercial loans - secured — — — 1 210 5 Total 6 $ 401 $ 274 5 $ 695 $ 449 Due to reduction in interest rate Due to extension of maturity date Due to permanent reduction in recorded investment Total For the Nine Months Ended September 30, 2015 One-to-four family residential real estate $ — $ 142 $ 132 $ 274 For the Nine Months Ended September 30, 2014 One-to-four family residential real estate $ 19 $ 373 $ 52 $ 444 Commercial loans - secured — — 5 5 Total $ 19 $ 373 $ 57 $ 449 The TDRs described above had no material impact on interest income, resulted in no change to the allowance for loan losses allocated and resulted in $127,000 of charge-offs for the nine months ended September 30, 2015 . The TDRs decreased interest income by $1,000 , resulted in no change to the allowance for loan losses allocated and resulted in charge-offs of $246,000 for the nine months ended September 30, 2014 . The following table presents TDRs for which there was a payment default during the nine months ending September 30, 2015 and 2014 within twelve months following the modification. 2015 2014 Number of loans Recorded investment Number of loans Recorded investment One-to-four family residential real estate 1 $ 27 1 $ 28 A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. The TDRs for which there was a payment default resulted in no change to the allowance for loan losses allocated and resulted in no charge-offs during the nine months ending September 30, 2015 and September 30, 2014 . There were certain other loan modifications during the three and nine months ending September 30, 2015 and 2014 that did not meet the definition of a TDR. These loans had a total recorded investment of $2.6 million and $1.6 million at September 30, 2015 and 2014 , respectively. The modification of these loans involved either a modification of the terms of a loan to borrowers who were not experiencing financial difficulties or a delay in a payment that was considered to be insignificant. In order 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. 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 as Nonaccrual has all the weaknesses inherent in one classified as 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, 2015 , based on the most recent analysis performed, 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 $ 117,242 $ — $ 429 $ 2,114 $ 119,785 One-to-four family residential real estate - non-owner occupied 43,705 223 — 411 44,339 Multi-family mortgage 312,554 456 5,741 1,404 320,155 Wholesale commercial lending 157,389 — 513 — 157,902 Nonresidential real estate 197,920 18,065 5,259 2,284 223,528 Construction 31 — — — 31 Land 472 — 819 — 1,291 Commercial loans: Secured 22,509 — 148 75 22,732 Unsecured 2,651 — 555 — 3,206 Municipal 1,599 — — — 1,599 Warehouse lines 16,369 — — — 16,369 Health care 19,995 — — — 19,995 Aviation 1,021 — — — 1,021 Other 15,294 — — — 15,294 Commercial leases: Investment rated commercial leases 157,893 — — — 157,893 Below investment grade 7,336 — — — 7,336 Non-rated 46,175 — — — 46,175 Lease pools 10,218 — — — 10,218 Consumer 1,927 — — — 1,927 Total $ 1,132,300 $ 18,744 $ 13,464 $ 6,288 $ 1,170,796 As of December 31, 2014 , based on the most recent analysis performed, 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 $ 126,102 $ 615 $ 1,046 $ 4,228 $ 131,991 One-to-four family residential real estate - non-owner occupied 46,253 931 964 198 48,346 Multi-family mortgage 336,557 609 3,430 4,515 345,111 Wholesale commercial lending 134,719 — 519 — 135,238 Nonresidential real estate 223,385 1,170 6,698 3,247 234,500 Construction 60 — — — 60 Land 1,212 — 613 — 1,825 Commercial loans: Secured 11,863 — 7 76 11,946 Unsecured 1,147 40 698 — 1,885 Municipal 2,213 — — — 2,213 Warehouse lines 11,296 — — — 11,296 Health care 24,127 — — — 24,127 Aviation 1,108 — — — 1,108 Other 14,307 — — — 14,307 Commercial leases: Investment rated commercial leases 160,208 — — — 160,208 Below investment grade 11,309 — — — 11,309 Non-rated 35,473 — — — 35,473 Lease pools 10,153 — — — 10,153 Consumer 2,048 — — 3 2,051 Total $ 1,153,540 $ 3,365 $ 13,975 $ 12,267 $ 1,183,147
Loans receivable		Loans receivable are as follows: September 30, 2015 December 31, 2014 One-to-four family residential real estate $ 164,124 $ 180,337 Multi-family mortgage 478,057 480,349 Nonresidential real estate 223,528 234,500 Construction and land 1,322 1,885 Commercial loans 80,216 66,882 Commercial leases 221,622 217,143 Consumer 1,927 2,051 1,170,796 1,183,147 Net deferred loan origination costs 1,583 1,199 Allowance for loan losses (10,081 ) (11,990 ) Loans, net $ 1,162,298 $ 1,172,356
Allowance for loan losses and the loans receivable by portfolio segment		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, 2015 One-to-four family residential real estate $ — $ 1,601 $ 1,601 $ 3,353 $ 160,771 $ 164,124 Multi-family mortgage 3 3,885 3,888 3,487 474,570 478,057 Nonresidential real estate 66 2,629 2,695 4,097 219,431 223,528 Construction and land — 74 74 — 1,322 1,322 Commercial loans 17 772 789 75 80,141 80,216 Commercial leases — 1,006 1,006 — 221,622 221,622 Consumer — 28 28 — 1,927 1,927 $ 86 $ 9,995 $ 10,081 $ 11,012 $ 1,159,784 1,170,796 Net deferred loan origination costs 1,583 Allowance for loan losses (10,081 ) Loans, net $ 1,162,298
Allowance for loan losses		ctivity in the allowance for loan losses is as follows: Three Months Ended Nine Months Ended 2015 2014 2015 2014 Beginning balance $ 10,810 $ 14,452 $ 11,990 $ 14,154 Loans charged off: One-to-four family residential real estate (125 ) (298 ) (327 ) (644 ) Multi-family mortgage (9 ) (97 ) (189 ) (781 ) Nonresidential real estate (26 ) (695 ) (289 ) (1,461 ) Construction and land — — — (1 ) Commercial loans — (78 ) (98 ) (100 ) Commercial leases — (8 ) — (8 ) Consumer (3 ) — (11 ) (10 ) (163 ) (1,176 ) (914 ) (3,005 ) Recoveries: One-to-four family residential real estate 16 26 295 134 Multi-family mortgage 169 11 177 31 Nonresidential real estate 24 116 49 400 Construction and land 38 29 44 287 Commercial loans 143 1,005 606 1,027 Commercial leases — — 1 — Consumer — 1 1 3 390 1,188 1,173 1,882 Net recoveries (charge-offs) 227 12 259 (1,123 ) Provision for (recovery of) loan losses (956 ) (1,413 ) (2,168 ) 20 Ending balance $ 10,081 $ 13,051 $ 10,081 $ 13,051
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, 2015 One-to-four family residential real estate $ 3,139 $ 2,539 $ — One-to-four family residential real estate – non owner occupied 359 413 — Multi-family mortgage 1,482 1,399 — Nonresidential real estate 2,575 2,263 — Commercial loans – secured 76 75 — $ 7,631 $ 6,689 $ — December 31, 2014 One-to-four family residential real estate $ 4,793 $ 4,210 $ — One-to-four family residential real estate – non owner occupied 291 198 — Multi-family mortgage 5,638 4,481 — Nonresidential real estate 4,023 3,245 — Commercial loans – secured 76 76 — Consumer 3 3 — $ 14,824 $ 12,213 $ —
Past Due Financing Receivables		The following tables present the aging of the recorded investment of loans at September 30, 2015 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 $ 61 $ 376 $ 2,272 $ 2,709 $ 117,063 $ 119,772 One-to-four family residential real estate - non-owner occupied 3 — 413 416 43,895 44,311 Multi-family mortgage 517 178 882 1,577 317,154 318,731 Wholesale commercial lending — 399 — 399 156,295 156,694 Nonresidential real estate — — 2,262 2,262 219,879 222,141 Construction — — — — 31 31 Land — — — — 1,289 1,289 Commercial loans: Secured — — 75 75 22,731 22,806 Unsecured — — — — 3,217 3,217 Municipal — — — — 1,610 1,610 Warehouse lines — — — — 15,406 15,406 Health care — — — — 20,030 20,030 Aviation — — — — 1,023 1,023 Other — — — — 16,425 16,425 Commercial leases: Investment rated commercial leases — 20 — 20 159,008 159,028 Below investment grade — — — — 7,377 7,377 Non-rated — 86 — 86 46,341 46,427 Lease pools — — — — 10,257 10,257 Consumer — — — — 1,935 1,935 $ 581 $ 1,059 $ 5,904 $ 7,544 $ 1,160,966 $ 1,168,510
Recorded Investment In Past Due Purchased Impaired Loans
Troubled Debt Restructurings on Financing Receivables		The following table presents loans classified as TDRs: September 30, 2015 December 31, 2014 One-to-four family residential real estate $ 1,657 $ 1,917 Multi-family mortgage 1,126 510 Troubled debt restructured loans – accrual loans 2,783 2,427 One-to-four family residential real estate 208 230 Multi-family mortgage — 346 Troubled debt restructured loans – nonaccrual loans 208 576 Total troubled debt restructured loans $ 2,991 $ 3,003
Loans By Class Modified As Troubled Debt Restructuring On Financing Receivables	The following tables present TDR activity: Three Months Ended September 30, 2015 2014 Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment Number of loans Pre- Modification outstanding recorded investment Post- Modification outstanding recorded investment One-to-four family residential real estate 5 $ 338 $ 211 1 $ 345 $ 345 Commercial loans - secured — — — 1 210 5 Total 5 $ 338 $ 211 2 $ 555 $ 350 Due to reduction in interest rate Due to extension of maturity date Due to permanent reduction in recorded investment Total For the Three Months Ended September 30, 2015 One-to-four family residential real estate $ — $ 79 $ 132 $ 211 For the Three Months Ended September 30, 2014 One-to-four family residential real estate $ — $ 345 $ — $ 345 Commercial loans - secured — — 5 5 Total $ — $ 345 $ 5 $ 350
Loans By Class Modified As Troubled Debt Restructurings With Payment Default		The following table presents TDRs for which there was a payment default during the nine months ending September 30, 2015 and 2014 within twelve months following the modification. 2015 2014 Number of loans Recorded investment Number of loans Recorded investment One-to-four family residential real estate 1 $ 27 1 $ 28
Financing Receivable Credit Quality Indicators		As of September 30, 2015 , based on the most recent analysis performed, 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 $ 117,242 $ — $ 429 $ 2,114 $ 119,785 One-to-four family residential real estate - non-owner occupied 43,705 223 — 411 44,339 Multi-family mortgage 312,554 456 5,741 1,404 320,155 Wholesale commercial lending 157,389 — 513 — 157,902 Nonresidential real estate 197,920 18,065 5,259 2,284 223,528 Construction 31 — — — 31 Land 472 — 819 — 1,291 Commercial loans: Secured 22,509 — 148 75 22,732 Unsecured 2,651 — 555 — 3,206 Municipal 1,599 — — — 1,599 Warehouse lines 16,369 — — — 16,369 Health care 19,995 — — — 19,995 Aviation 1,021 — — — 1,021 Other 15,294 — — — 15,294 Commercial leases: Investment rated commercial leases 157,893 — — — 157,893 Below investment grade 7,336 — — — 7,336 Non-rated 46,175 — — — 46,175 Lease pools 10,218 — — — 10,218 Consumer 1,927 — — — 1,927 Total $ 1,132,300 $ 18,744 $ 13,464 $ 6,288 $ 1,170,796
Number Of Loans Default Subsequent Modification		1	1

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2015
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, 2015 Securities: Certificates of deposit $ — $ 76,194 $ — $ 76,194 Equity mutual fund 512 — — 512 Mortgage-backed securities – residential — 19,876 — 19,876 Collateralized mortgage obligations – residential — 7,635 — 7,635 SBA-guaranteed loan participation certificates — 25 — 25 $ 512 $ 103,730 $ — $ 104,242 December 31, 2014 Securities: Certificates of deposit $ — $ 86,049 $ — $ 86,049 Equity mutual fund 509 — — 509 Mortgage-backed securities - residential — 24,611 — 24,611 Collateralized mortgage obligations – residential — 9,976 — 9,976 SBA-guaranteed loan participation certificates — 29 — 29 $ 509 $ 120,665 $ — $ 121,174
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, 2015 Impaired loans: Multi-family mortgage $ — $ — $ 230 $ 230 Nonresidential real estate — — 1,323 1,323 Commercial loans — — 58 58 $ — $ — $ 1,611 $ 1,611 Other real estate owned: One-to-four family residential real estate $ — $ — $ 42 $ 42 Multi-family mortgage — — 962 962 Nonresidential real estate — — 107 107 Land — — 749 749 $ — $ — $ 1,860 $ 1,860 Mortgage servicing rights $ — $ 297 $ — $ 297 December 31, 2014 Impaired loans: One-to-four family residential real estate $ — $ — $ 70 $ 70 Multi-family mortgage — — 1,905 1,905 Nonresidential real estate — — 2,369 2,369 $ — $ — $ 4,344 $ 4,344 Other real estate owned: One-to-four family residential real estate $ — $ — $ 55 $ 55 Multi-family mortgage — — 1,265 1,265 Nonresidential real estate — — 126 126 Land — — 753 753 $ — $ — $ 2,199 $ 2,199 Mortgage servicing rights $ — $ 160 $ — $ 160
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, 2015 : Fair Value Valuation Technique(s) Significant Unobservable Input(s) Range (Weighted Average) Impaired loans: Multi-family mortgage loans $ 230 Sales comparison Comparison between sales and income approaches 10% Income approach Cap Rate 10% Nonresidential real estate loans 1,323 Sales comparison Comparison between sales and income approaches -25.74% to 1.24% Income approach Cap Rate 8.5% Commercial loans 58 Sales comparison Discount applied to valuation 34.3% Impaired loans $ 1,611 Other real estate owned: One-to-four family residential real estate $ 42 Sales comparison Discount applied to valuation -0.35% to 2.8% Multi-family mortgage 962 Sales comparison Comparison between sales and income approaches -67.74% to 11.68% (7%) Nonresidential real estate loans 107 Sales comparison Comparison between sales and income approaches 58% Land 749 Sales comparison Discount applied to valuation -7.7% to 17.24% Other real estate owned $ 1,860
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, 2015 Using: Carrying Amount Level 1 Level 2 Level 3 Total Financial assets Cash and cash equivalents $ 61,470 $ 8,809 $ 52,661 $ — $ 61,470 Securities 104,242 512 103,730 — 104,242 Loans receivable, net of allowance for loan losses 1,162,298 — 1,159,706 1,611 1,161,317 FHLBC stock 6,257 — — — N/A Accrued interest receivable 4,000 — 4,000 — 4,000 Financial liabilities Noninterest-bearing demand deposits $ 233,192 $ — $ 233,192 $ — $ 233,192 Savings deposits 152,585 — 152,585 — 152,585 NOW and money market accounts 572,860 — 572,860 — 572,860 Certificates of deposit 222,897 — 222,878 — 222,878 Borrowings 18,048 — 18,049 — 18,049 Accrued interest payable 46 — 46 — 46

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share, Basic and Diluted [Abstract]
Net income available to common stockholders	$ 2,349	$ 3,590	$ 6,559	$ 5,936
Average common shares outstanding (shares)	20,501,966	21,101,966	20,803,065	21,101,966
Less:
Unvested restricted stock shares (shares)	7,932	16,822	11,425	20,349
Weighted average common shares outstanding (shares)	19,725,707	20,218,951	19,999,089	20,154,912
Unearned Employee Stock Ownership Plan shares	(768,327)	(866,193)	(792,551)	(926,705)
Add - Net effect of dilutive stock options and unvested restricted stock	5,595	16,456	5,605	16,052
Weighted average diluted common shares outstanding (shares)	19,731,302	20,235,407	20,004,694	20,170,964
Basic earnings per common share (usd per share)	$ 0.12	$ 0.17	$ 0.33	$ 0.29
Diluted earnings (loss) per common share (usd per share)	$ 0.12	$ 0.17	$ 0.33	$ 0.29

Securities - Fair Value of Secu

Securities - Fair Value of Securites (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	$ 103,259	$ 119,947
Available for sale securities, accumulated gross unrealized gain before tax	1,018	1,280
Available for sale securities, accumulated gross unrealized loss before tax	(35)	(53)
Total Fair value	104,242	121,174
Certificates of deposit [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	76,194	86,049
Available for sale securities, accumulated gross unrealized gain before tax	0	0
Available for sale securities, accumulated gross unrealized loss before tax	0	0
Total Fair value	76,194	86,049
Equity mutual fund [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	500	500
Available for sale securities, accumulated gross unrealized gain before tax	12	9
Available for sale securities, accumulated gross unrealized loss before tax	0	0
Total Fair value	512	509
Mortgage - backed securities - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	18,944	23,433
Available for sale securities, accumulated gross unrealized gain before tax	957	1,218
Available for sale securities, accumulated gross unrealized loss before tax	(25)	(40)
Total Fair value	19,876	24,611
Collateralized mortgage obligations - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	7,596	9,936
Available for sale securities, accumulated gross unrealized gain before tax	49	53
Available for sale securities, accumulated gross unrealized loss before tax	(10)	(13)
Total Fair value	7,635	9,976
SBA-guaranteed loan participation certificates [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	25	29
Available for sale securities, accumulated gross unrealized gain before tax	0	0
Available for sale securities, accumulated gross unrealized loss before tax	0	0
Total Fair value	$ 25	$ 29

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Amortized cost and fair values of securities
Due in one year or less, amortized cost	$ 76,194
Due in one year or less, fair value	76,194
Total amortized cost	103,259	$ 119,947
Total Fair value	104,242	121,174
Equity mutual fund [Member]
Amortized cost and fair values of securities
Total amortized cost	500	500
Total Fair value	512	509
Mortgage - backed securities - residential [Member]
Amortized cost and fair values of securities
Total amortized cost	18,944	23,433
Total Fair value	19,876	24,611
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Total amortized cost	7,596	9,936
Total Fair value	7,635	9,976
SBA-guaranteed loan participation certificates [Member]
Amortized cost and fair values of securities
Total amortized cost	25	29
Total Fair value	$ 25	$ 29

Securities - Proceeds and Gross

Securities - Proceeds and Gross Gains (Losses) From Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Proceeds and Gross Gains (Losses) from Sale of Securities [Abstract]
Proceeds from Sale of Available-for-sale Securities	$ 0	$ 0	$ 3,663
Available-for-sale Securities, Gross Realized Gain (Loss)	$ 0	$ 0	$ 7

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	$ 0		$ 0
12 Months or More, Fair Value	3,148,000		3,973,000
Fair Value, Total	3,148,000		3,973,000
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	0	$ 0
12 Months or More, Unrealized Loss	(35,000)	(53,000)
Unrealized Loss, Total	(35,000)	(53,000)
Mortgage Backed Securities Residential [Member]
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	0		0
12 Months or More, Fair Value	1,743,000		2,126,000
Fair Value, Total	1,743,000		2,126,000
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	0	0
12 Months or More, Unrealized Loss	(25,000)	(40,000)
Unrealized Loss, Total	(25,000)	(40,000)
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	0		0
12 Months or More, Fair Value	1,405,000		1,847,000
Fair Value, Total	1,405,000		$ 1,847,000
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	0	0
12 Months or More, Unrealized Loss	(10,000)	(13,000)
Unrealized Loss, Total	$ (10,000)	$ (13,000)

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Proceeds and Gross Gains (Losses) from Sale of Securities [Abstract]
Proceeds from Sale of Available-for-sale Securities	$ 0	$ 0	$ 3,663
Available-for-sale Securities, Gross Realized Gain (Loss)	$ 0	$ 0	$ 7

Loans Receivable (Details)

Loans Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Loans receivable
Total loans	$ 1,170,796		$ 1,183,147
Net deferred loan origination costs	1,583		1,199
Allowance for loan losses	(10,081)	$ (10,810)	(11,990)	$ (13,051)	$ (14,452)	$ (14,154)
Loans, net	1,162,298		1,172,356
One-to-four family residential real estate loans [Member]
Loans receivable
Total loans	164,124		180,337
Allowance for loan losses	(1,601)		(2,148)
Multi-family mortgage loans [Member]
Loans receivable
Total loans	478,057		480,349
Allowance for loan losses	(3,888)		(5,205)
Nonresidential real estate loans [Member]
Loans receivable
Total loans	223,528		234,500
Allowance for loan losses	(2,695)		(2,940)
Construction and land loans [Member]
Loans receivable
Total loans	1,322		1,885
Allowance for loan losses	(74)		(80)
Commercial loans [Member]
Loans receivable
Total loans	80,216		66,882
Allowance for loan losses	(789)		(554)
Commercial leases [Member]
Loans receivable
Total loans	221,622		217,143
Allowance for loan losses	(1,006)		(1,009)
Consumer loans [Member]
Loans receivable
Total loans	1,927		2,051
Allowance for loan losses	$ (28)		$ (54)

Loans Receivable - Loan Origina

Loans Receivable - Loan Origination and Risk Management (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 1,170,796	$ 1,183,147
Multi-family mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	478,057	480,349
Nonresidential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	223,528	234,500
Commercial leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$ 221,622	$ 217,143

Loans Receivable - Allowance fo

Loans Receivable - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Allowance for loan losses and the loans receivable by portfolio segment
Net deferred loan origination costs	$ 1,583	$ 1,199
Loans, net	$ 1,162,298	$ 1,172,356

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, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 10,810	$ 14,452	$ 11,990	$ 14,154
Loans charged off	163	1,176	914	3,005
Recoveries	390	1,188	1,173	1,882
Net charge-off	(227)	(12)	(259)	1,123
Provision for (recovery of) loan losses	(956)	(1,413)	(2,168)	20
Ending balance	10,081	13,051	10,081	13,051
One-to-four family residential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			2,148
Loans charged off	(125)	(298)	(327)	(644)
Recoveries	16	26	295	134
Ending balance	1,601		1,601
Multi-family mortgage loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			5,205
Loans charged off	(9)	(97)	(189)	(781)
Recoveries	169	11	177	31
Ending balance	3,888		3,888
Nonresidential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			2,940
Loans charged off	(26)	(695)	(289)	(1,461)
Recoveries	24	116	49	400
Ending balance	2,695		2,695
Construction and land loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			80
Loans charged off	0	0	0	(1)
Recoveries	38	29	44	287
Ending balance	74		74
Commercial loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			554
Loans charged off	0	(78)	(98)	(100)
Recoveries	143	1,005	606	1,027
Ending balance	789		789
Commercial leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,009
Loans charged off	0	8	0	8
Recoveries	0	0	1	0
Ending balance	1,006		1,006
Consumer loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			54
Loans charged off	(3)	0	(11)	(10)
Recoveries	0	$ 1	1	$ 3
Ending balance	$ 28		$ 28

Loans Receivable - Loans Indivi

Loans Receivable - Loans Individually Evaluated for Impairment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 1,170,796	$ 1,170,796	$ 1,183,147
Loans individually evaluated for impairment by class loans
Loan Balance	10,293	10,293	10,614
Recorded Investment	9,279	9,279	9,331
Partial Charge-off	1,054	1,054	1,193
Average Investment in Impaired Loans	8,667	9,170	11,610
Interest Income Recognized	64	242	315
Loan Balance (With an allowance recorded)	1,795	1,795	5,778
Recorded Investment (With an allowance recorded)	1,697	1,697	4,814
Partial Charge-offs (With an allowance recorded)	67	67	987
Allowance for loan losses (With an allowance recorded)	86	86	470
Average Investment in Impaired Loans (With an allowance recorded)	1,712	3,605	4,263
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	14	115
Impaired Loan, Total	12,088	12,088	16,392
Recorded Investment, Total	10,976	10,976	14,145
Partial Charge-offs, Total	1,121	1,121	2,180
Average Investment in Impaired Loans, Total	10,379	12,775	15,873
Interest Income Recognized, Total	64	256	430
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	9,995	9,995	11,520
Net deferred loan origination costs	1,583	1,583	1,199
Loans and Leases Receivable, Allowance	10,081	10,081	11,990	$ 10,810	$ 13,051	$ 14,452	$ 14,154
Financing Receivable, Individually Evaluated for Impairment	11,012	11,012	14,222
Financing Receivable, Collectively Evaluated for Impairment	1,159,784	1,159,784	1,168,925
Loans, net	1,162,298	1,162,298	1,172,356
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	164,124	164,124	180,337
Loans individually evaluated for impairment by class loans
Loan Balance	3,543	3,543	3,246
Recorded Investment	2,830	2,830	2,656
Partial Charge-off	785	785	649
Average Investment in Impaired Loans	2,742	2,674	2,777
Interest Income Recognized	6	19	44
Allowance for loan losses (With an allowance recorded)	0	0	8
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,601	1,601	2,140
Loans and Leases Receivable, Allowance	1,601	1,601	2,148
Financing Receivable, Individually Evaluated for Impairment	3,353	3,353	4,174
Financing Receivable, Collectively Evaluated for Impairment	160,771	160,771	176,163
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	44,339	44,339	48,346
Loans individually evaluated for impairment by class loans
Loan Balance	567	567	1,481
Recorded Investment	520	520	1,425
Partial Charge-off	57	57	57
Average Investment in Impaired Loans	704	1,126	745
Interest Income Recognized	6	31	76
Loan Balance (With an allowance recorded)			115
Recorded Investment (With an allowance recorded)			78
Partial Charge-offs (With an allowance recorded)			37
Allowance for loan losses (With an allowance recorded)			8
Average Investment in Impaired Loans (With an allowance recorded)			202
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			0
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	478,057	478,057	480,349
Loans individually evaluated for impairment by class loans
Loan Balance	2,763	2,763	3,174
Recorded Investment	2,739	2,739	2,593
Partial Charge-off	0	0	481
Average Investment in Impaired Loans	1,970	1,856	3,419
Interest Income Recognized	19	69	120
Loan Balance (With an allowance recorded)	238	238	2,713
Recorded Investment (With an allowance recorded)	233	233	2,131
Partial Charge-offs (With an allowance recorded)	0	0	624
Allowance for loan losses (With an allowance recorded)	3	3	226
Average Investment in Impaired Loans (With an allowance recorded)	587	1,483	2,343
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	48
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,885	3,885	4,979
Loans and Leases Receivable, Allowance	3,888	3,888	5,205
Financing Receivable, Individually Evaluated for Impairment	3,487	3,487	5,282
Financing Receivable, Collectively Evaluated for Impairment	474,570	474,570	475,067
Multi Family Mortgage Loans without wholesale [Member] [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	320,155	320,155	345,111
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	3	3
Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	157,902	157,902	135,238
Loans individually evaluated for impairment by class loans
Loan Balance	513	513	519
Recorded Investment	508	508	513
Partial Charge-off	0	0	0
Average Investment in Impaired Loans	510	515	401
Interest Income Recognized	9	26	0
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	223,528	223,528	234,500
Loans individually evaluated for impairment by class loans
Loan Balance	2,907	2,907	2,118
Recorded Investment	2,682	2,682	2,068
Partial Charge-off	212	212	6
Average Investment in Impaired Loans	2,741	2,999	4,175
Interest Income Recognized	24	97	72
Loan Balance (With an allowance recorded)	1,481	1,481	2,950
Recorded Investment (With an allowance recorded)	1,389	1,389	2,605
Partial Charge-offs (With an allowance recorded)	67	67	326
Allowance for loan losses (With an allowance recorded)	66	66	236
Average Investment in Impaired Loans (With an allowance recorded)	1,106	2,114	1,718
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	14	67
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,629	2,629	2,704
Loans and Leases Receivable, Allowance	2,695	2,695	2,940
Financing Receivable, Individually Evaluated for Impairment	4,097	4,097	4,690
Financing Receivable, Collectively Evaluated for Impairment	219,431	219,431	229,810
Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	31	31	60
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,291	1,291	1,825
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	22,732	22,732	11,946
Loans individually evaluated for impairment by class loans
Loan Balance			76
Recorded Investment			76
Partial Charge-off			0
Average Investment in Impaired Loans			93
Interest Income Recognized			3
Loan Balance (With an allowance recorded)	76	76
Recorded Investment (With an allowance recorded)	75	75
Partial Charge-offs (With an allowance recorded)	0	0
Allowance for loan losses (With an allowance recorded)	17	17
Average Investment in Impaired Loans (With an allowance recorded)	19	8
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0
Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	3,206	3,206	1,885
Commercial loans - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	15,294	15,294	14,307
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,927	1,927	2,051
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	28	28	54
Loans and Leases Receivable, Allowance	28	28	54
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	1,927	1,927	2,051
Construction And Land Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	1,322	1,322	1,885
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	74	74	80
Loans and Leases Receivable, Allowance	74	74	80
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	1,322	1,322	1,885
Commercial Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	80,216	80,216	66,882
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	17	17	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	772	772	554
Loans and Leases Receivable, Allowance	789	789	554
Financing Receivable, Individually Evaluated for Impairment	75	75	76
Financing Receivable, Collectively Evaluated for Impairment	80,141	80,141	66,806
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	221,622	221,622	217,143
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	1,006	1,006	1,009
Loans and Leases Receivable, Allowance	1,006	1,006	1,009
Financing Receivable, Individually Evaluated for Impairment	0	0	0
Financing Receivable, Collectively Evaluated for Impairment	221,622	221,622	217,143
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 119,785	$ 119,785	$ 131,991

Loans Receivable - Contractuall

Loans Receivable - Contractually Required Payments (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
One-to-four family residential real estate loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Recorded Investment, Total	$ 52,000	$ 52,000

Loans Receivable - Nonaccrual L

Loans Receivable - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Reserve For Uncollected Loan Interest	$ 300	$ 500
Unpaid Principal Balance	7,631	14,824
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	6,689	12,213
Loans Past Due Over 90 Days, still accruing	0	0
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	0	3
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	3,139	4,793
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	2,539	4,210
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	359	291
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	413	198
Loans Past Due Over 90 Days, still accruing	0	0
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	1,482	5,638
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	1,399	4,481
Loans Past Due Over 90 Days, still accruing	0	0
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	2,575	4,023
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	2,263	3,245
Loans Past Due Over 90 Days, still accruing	0	0
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	76	76
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	75	76
Loans Past Due Over 90 Days, still accruing	0	0
Consumer loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	0	3
Loans Past Due Over 90 Days, still accruing	$ 0	$ 0

Loans Receivable - Past Due Loa

Loans Receivable - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	$ 581	$ 5,013
Recorded Investment, 60 to 89 Days Past Due	1,059	2,074
Recorded Investment, 90 Days or Greater Past Due	5,904	10,729
Recorded Investment, Total Past Due	7,544	17,816
Recorded Investment, Loans Not Past Due	1,160,966	1,158,849
Recorded investment, total	1,168,510	1,176,665
Consumer Loan [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	18
Recorded Investment, 60 to 89 Days Past Due	0	1
Recorded Investment, 90 Days or Greater Past Due	0	3
Recorded Investment, Total Past Due	0	22
Recorded Investment, Loans Not Past Due	1,935	2,038
Recorded investment, total	1,935	2,060
Commercial Leases Lease Pools [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	10,257	10,180
Recorded investment, total	10,257	10,180
Commercial Leases Non Rated [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	8
Recorded Investment, 60 to 89 Days Past Due	86	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	86	8
Recorded Investment, Loans Not Past Due	46,341	35,672
Recorded investment, total	46,427	35,680
Commercial Leases Below Investment Grade [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	136
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	136
Recorded Investment, Loans Not Past Due	7,377	11,246
Recorded investment, total	7,377	11,382
Commercial Leases Investment Rated [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	426
Recorded Investment, 60 to 89 Days Past Due	20	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	20	426
Recorded Investment, Loans Not Past Due	159,008	160,830
Recorded investment, total	159,028	161,256
Commercial Loans Other [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	16,425	11,339
Recorded investment, total	16,425	11,339
Aviation (Member) [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, Loans Not Past Due	1,023	1,111
Recorded investment, total	1,023	1,111
Commercial Loans Health Care [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	20,030	24,154
Recorded investment, total	20,030	24,154
Commercial Loans Warehouse Lines [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	15,406	14,362
Recorded investment, total	15,406	14,362
Commercial Loans Municipal [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	1,610	2,243
Recorded investment, total	1,610	2,243
Commercial loans - unsecured [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	1
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	1
Recorded Investment, Loans Not Past Due	3,217	1,884
Recorded investment, total	3,217	1,885
Commercial loans - Secured [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	75	76
Recorded Investment, Total Past Due	75	76
Recorded Investment, Loans Not Past Due	22,731	11,863
Recorded investment, total	22,806	11,939
Land Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	1,289	1,814
Recorded investment, total	1,289	1,814
Construction Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	31	63
Recorded investment, total	31	63
Commercial Real Estate [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	376
Recorded Investment, 60 to 89 Days Past Due	0	444
Recorded Investment, 90 Days or Greater Past Due	2,262	3,245
Recorded Investment, Total Past Due	2,262	4,065
Recorded Investment, Loans Not Past Due	219,879	227,078
Recorded investment, total	222,141	231,143
Wholesale Commercial Lending [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	399	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	399	0
Recorded Investment, Loans Not Past Due	156,295	135,395
Recorded investment, total	156,694	135,395
Multi Family Mortgage Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	517	2,314
Recorded Investment, 60 to 89 Days Past Due	178	1,187
Recorded Investment, 90 Days or Greater Past Due	882	3,363
Recorded Investment, Total Past Due	1,577	6,864
Recorded Investment, Loans Not Past Due	317,154	334,173
Recorded investment, total	318,731	341,037
One To Four Family Residential Real Estate Loans Non Owner Occupied [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	3	320
Recorded Investment, 60 to 89 Days Past Due	0	165
Recorded Investment, 90 Days or Greater Past Due	413	198
Recorded Investment, Total Past Due	416	683
Recorded Investment, Loans Not Past Due	43,895	47,350
Recorded investment, total	44,311	48,033
One to Four Family Residential Real Estate Loans [Member]
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment, 30 to 59 Days Past Due	61	1,415
Recorded Investment, 60 to 89 Days Past Due	376	276
Recorded Investment, 90 Days or Greater Past Due	2,272	3,844
Recorded Investment, Total Past Due	2,709	5,535
Recorded Investment, Loans Not Past Due	117,063	126,054
Recorded investment, total	$ 119,772	$ 131,589

Loans Receivable - Aging of Rec

Loans Receivable - Aging of Recorded Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	$ 581	$ 5,013
Recorded Investment, 60 to 89 Days Past Due	1,059	2,074
Recorded Investment, 90 Days or Greater Past Due	5,904	10,729
Recorded Investment, Total Past Due	7,544	17,816
Recorded Investment, Loans Not Past Due	1,160,966	1,158,849
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	3	320
Recorded Investment, 60 to 89 Days Past Due	0	165
Recorded Investment, 90 Days or Greater Past Due	413	198
Recorded Investment, Total Past Due	416	683
Recorded Investment, Loans Not Past Due	43,895	47,350
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	517	2,314
Recorded Investment, 60 to 89 Days Past Due	178	1,187
Recorded Investment, 90 Days or Greater Past Due	882	3,363
Recorded Investment, Total Past Due	1,577	6,864
Recorded Investment, Loans Not Past Due	317,154	334,173
Construction loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	31	63
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	0
Recorded Investment, Loans Not Past Due	1,289	1,814
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	0
Recorded Investment, 90 Days or Greater Past Due	75	76
Recorded Investment, Total Past Due	75	76
Recorded Investment, Loans Not Past Due	22,731	11,863
Commercial loans - Unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment, 30 to 59 Days Past Due	0	0
Recorded Investment, 60 to 89 Days Past Due	0	1
Recorded Investment, 90 Days or Greater Past Due	0	0
Recorded Investment, Total Past Due	0	1
Recorded Investment, Loans Not Past Due	$ 3,217	$ 1,884

Loans Receivable - Troubled Deb

Loans Receivable - Troubled Debt Restructuring (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)loan	Sep. 30, 2014USD ($)loan	Dec. 31, 2014USD ($)
Financing Receivable, Modifications [Line Items]
Due To Extension Of Maturity Date		$ 345,000		$ 373,000
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings			$ 0		$ 0
Troubled Debt Restructurings
Financing receivable modifications	$ 2,991,000		2,991,000		3,003,000
Troubled Debt Restructurings Value Of Decreased Interest Income	0	0		1,000
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0
Troubled Debt Restructuring Charge Off			$ 0	$ 0
Number Of Loans Default Subsequent Modification | loan			1	1
Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	2,783,000		$ 2,783,000		2,427,000
Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	208,000		208,000		576,000
One-to-four family residential real estate loans - non-owner occupied loans [Member] | Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	1,657,000		1,657,000		1,917,000
One-to-four family residential real estate loans - non-owner occupied loans [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	208,000		208,000		230,000
Multi-family mortgage loans [Member] | Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	1,126,000		1,126,000		510,000
Multi-family mortgage loans [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	0		0		346,000
Commercial loans - Secured [Member]
Financing Receivable, Modifications [Line Items]
Due To Extension Of Maturity Date		0		$ 0
One to Four Family Residential Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Due To Extension Of Maturity Date	79,000	$ 345,000	142,000	$ 373,000
Allowance for Loan and Lease Losses [Member]
Troubled Debt Restructurings
Valuation Allowances and Reserves, Balance	$ 0		$ 0		$ 38,000

Loans Receivable - Modified Tro

Loans Receivable - Modified Troubled Debt Restructuring (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)loan	Sep. 30, 2014USD ($)loan	Sep. 30, 2015USD ($)loan	Sep. 30, 2014USD ($)loan
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings Value Of Decreased Interest Income	$ 0	$ 0		$ 1,000
Loans modified			$ 2,574,000	$ 1,600,000
Loans by class modified as TDRs
Number of Loans | loan	5	2	6	5
Pre-Modification outstanding recorded investment	$ 338,000	$ 555,000	$ 401,000	$ 695,000
Post-Modification outstanding recorded investment	211,000	350,000	$ 274,000	449,000
Due to reduction in interest rate		0		19,000
Due to extension of maturity date		345,000		373,000
Due to permanent reduction in recorded investment		5,000		57,000
Total		350,000		449,000
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0
Troubled Debt Restructuring Charge Off	$ 127,000	$ 205,000		$ 246,000
One-to-four family residential real estate loans [Member]
Loans by class modified as TDRs
Number of Loans | loan	5	1	6	4
Pre-Modification outstanding recorded investment	$ 338,000	$ 345,000	$ 401,000	$ 485,000
Post-Modification outstanding recorded investment	211,000	345,000	274,000	444,000
Due to reduction in interest rate	0	0	0	19,000
Due to extension of maturity date	79,000	345,000	142,000	373,000
Due to permanent reduction in recorded investment	132,000	0	132,000	52,000
Total	$ 211,000	$ 345,000	$ 274,000	$ 444,000
Commercial loans - Secured [Member]
Loans by class modified as TDRs
Number of Loans | loan	0	1		1
Pre-Modification outstanding recorded investment	$ 0	$ 210,000		$ 210,000
Post-Modification outstanding recorded investment	$ 0	5,000		5,000
Due to reduction in interest rate				0
Due to extension of maturity date		0		0
Due to permanent reduction in recorded investment		5,000		5,000
Total		$ 5,000		$ 5,000

Loans Receivable - Troubled D38

Loans Receivable - Troubled Debt Restructuring - Payment Defaults (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)loan	Sep. 30, 2014USD ($)loan	Sep. 30, 2015USD ($)loan	Sep. 30, 2014USD ($)loan
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructuring Charge Off			$ 0	$ 0
Troubled Debt Restructuring Charge Off	$ 127,000	$ 205,000		246,000
Financing Receivable Pre Modification Recorded Investment	338,000	555,000	$ 401,000	$ 695,000
Loans by class modified as TDRs with payment default
Number of loans | loan			1	1
Financing Receivable Post Modification Recorded Investment	$ 211,000	$ 350,000	$ 274,000	$ 449,000
Number Of Loans | loan	5	2	6	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 27,000	$ 28,000
One-to-four family residential real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Pre Modification Recorded Investment	$ 338,000	$ 345,000	401,000	485,000
Loans by class modified as TDRs with payment default
Financing Receivable Post Modification Recorded Investment	$ 211,000	$ 345,000	$ 274,000	$ 444,000
Number Of Loans | loan	5	1	6	4

Loans Receivable - Credit Quali

Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable Credit Quality Indicators
Total loans	$ 1,170,796	$ 1,183,147
One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	164,124	180,337
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	119,785	131,991
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	44,339	48,346
Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	478,057	480,349
Multi Family Mortgage Loans without wholesale [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	320,155	345,111
Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	157,902	135,238
Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	223,528	234,500
Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	31	60
Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,291	1,825
Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	22,732	11,946
Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,206	1,885
Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,599	2,213
Commercial Loans - Warehouse Lines [Member]
Financing Receivable Credit Quality Indicators
Total loans	16,369	11,296
Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	19,995	24,127
Aviation (Member) [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,021	1,108
Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	15,294	14,307
Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	157,893	160,208
Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	7,336	11,309
Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	46,175	35,473
Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,218	10,153
Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,927	2,051
Nonaccrual [Member]
Financing Receivable Credit Quality Indicators
Total loans	6,288	12,267
Nonaccrual [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,114	4,228
Nonaccrual [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	411	198
Nonaccrual [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,404	4,515
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	2,284	3,247
Nonaccrual [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
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	75	76
Nonaccrual [Member] | Commercial loans - Unsecured [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 - Warehouse Lines [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] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	3
Substandard [Member]
Financing Receivable Credit Quality Indicators
Total loans	13,464	13,975
Substandard [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	429	1,046
Substandard [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	964
Substandard [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5,741	3,430
Substandard [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	513	519
Substandard [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5,259	6,698
Substandard [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	819	613
Substandard [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	148	7
Substandard [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	555	698
Substandard [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Loans - Warehouse Lines [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	0
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] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Pass [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,132,300	1,153,540
Pass [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	117,242	126,102
Pass [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	43,705	46,253
Pass [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	312,554	336,557
Pass [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	157,389	134,719
Pass [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	197,920	223,385
Pass [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	31	60
Pass [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	472	1,212
Pass [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	22,509	11,863
Pass [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,651	1,147
Pass [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,599	2,213
Pass [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable Credit Quality Indicators
Total loans	16,369	11,296
Pass [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	19,995	24,127
Pass [Member] | Aviation (Member) [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,021	1,108
Pass [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	15,294	14,307
Pass [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	157,893	160,208
Pass [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	7,336	11,309
Pass [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	46,175	35,473
Pass [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,218	10,153
Pass [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,927	2,048
Special Mention [Member]
Financing Receivable Credit Quality Indicators
Total loans	18,744	3,365
Special Mention [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	615
Special Mention [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	223	931
Special Mention [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	456	609
Special Mention [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Nonresidential Real Estate Loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	18,065	1,170
Special Mention [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
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	0
Special Mention [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	40
Special Mention [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Loans - Warehouse Lines [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	0	0
Special Mention [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	$ 0	$ 0

Loans Receivable - Narrative (D

Loans Receivable - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Reserve For Uncollected Loan Interest	$ 300,000		$ 300,000		$ 500,000
Financing receivable modifications	2,991,000		2,991,000		3,003,000
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings			0		0
Troubled Debt Restructurings Value Of Decreased Interest Income	0	$ 0		$ 1,000
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0
Charges regarding TDRs	127,000	$ 205,000		246,000
Loans modified			2,574,000	$ 1,600,000
Allowance for Loan and Lease Losses [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$ 0		$ 0		$ 38,000

Fair Value - Financial Assets A

Fair Value - Financial Assets Accounted for at Fair Value (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	$ 1,611,000		$ 4,344,000
Schedule of Company's financial instruments measured at fair values
Total Fair value	104,242,000		121,174,000
Real Estate Acquired Through Foreclosure Fair Value	1,860,000		2,199,000
Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	76,194,000		86,049,000
Equity Funds [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	512,000		509,000
Residential Mortgage Backed Securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	19,876,000		24,611,000
Collateralized Debt Obligations [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	7,635,000		9,976,000
SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	25,000		29,000
Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	1,611,000		4,344,000
Schedule of Company's financial instruments measured at fair values
Total Fair value	104,242,000		121,174,000
Real Estate Acquired Through Foreclosure Fair Value	1,860,000		2,199,000
Servicing Asset at Fair Value, Amount	297,000		160,000
Nonrecurring [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	76,194,000		86,049,000
Nonrecurring [Member] | Equity mutual fund [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	512,000		509,000
Nonrecurring [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	19,876,000		24,611,000
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	7,635,000		9,976,000
Nonrecurring [Member] | SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	25,000		29,000
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Total Fair value	512,000		509,000
Real Estate Acquired Through Foreclosure Fair Value	0		0
Servicing Asset at Fair Value, Amount	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
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
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
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Total Fair value	103,730,000		120,665,000
Real Estate Acquired Through Foreclosure Fair Value	0		0
Servicing Asset at Fair Value, Amount	297,000		160,000
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Equity mutual fund [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	1,611,000		4,344,000
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0
Real Estate Acquired Through Foreclosure Fair Value	1,860,000		2,199,000
Servicing Asset at Fair Value, Amount	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
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity mutual fund [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	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
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
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	0		0
One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			70,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value			55,000
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			70,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	42,000		55,000
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			0
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]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			0
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	42,000
Multi Family Mortgage Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			1,905,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value			1,265,000
Multi Family Mortgage Loans [Member] | Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	230,000		1,905,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	962,000		1,265,000
Multi Family Mortgage Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
Multi Family Mortgage Loans [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
Multi Family Mortgage Loans [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	230,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	962,000
Commercial Real Estate [Member] | Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	1,323,000		2,369,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	107,000		126,000
Commercial Real Estate [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
Commercial Real Estate [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0		0
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	0		0
Commercial Real Estate [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	1,323,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	107,000
Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value			2,369,000
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value			126,000
Commercial Loan [Member] | Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	58,000
Commercial Loan [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0
Commercial Loan [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	0
Commercial Loan [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loan Fair Value	58,000
Land Loans [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value			753,000
Land Loans [Member] | Nonrecurring [Member]
Schedule of Company's financial instruments measured at fair values
Real Estate Acquired Through Foreclosure Fair Value	749,000		753,000
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		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		$ 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	$ 749,000
Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Discount applied to valuation	Discount applied to valuation
Sales Comparison Valuation Technique [Member] | Other Real Estate Owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison
Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Commercial Loan [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Discount applied to valuation
Sales Comparison Valuation Technique [Member] | Land Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description	Discount applied to valuation	Discount applied to valuation
Income Approach Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Income approach	Income approach
Fair Value Measurements, Sensitivity Analysis, Description	Cap Rate	Cap Rate
Income Approach Valuation Technique [Member] | Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description	Income approach	Income approach
Fair Value Measurements, Sensitivity Analysis, Description	Cap Rate	Cap Rate

Fair Value - Assets Measured at

Fair Value - Assets Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired Loans Carrying Amount		$ 1,700,000		$ 4,800,000
Impaired Loans Valuation Allowance		86,000		470,000
allowance for loan losses, specific reserve, increase or decrease	$ 345,000	(384,000)
Other Real Estate		2,900,000		3,000,000
Real Estate Owned, Valuation Allowance		1,047,000		803,000
Fair Value, Impaired loans		1,611,000		4,344,000
Fair Value, Other real estate owned		1,860,000		2,199,000
Other Real Estate Owned Write Downs		467,000	$ 392,000
Mortgage Servicing Rights (MSR) Impairment (Recovery)		(2,000)	$ (6,000)
One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				70,000
Fair Value, Other real estate owned				55,000
Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				1,905,000
Fair Value, Other real estate owned				1,265,000
Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				2,369,000
Fair Value, Other real estate owned				126,000
Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		1,611,000		4,344,000
Fair Value, Other real estate owned		1,860,000		2,199,000
Mortgage servicing rights		297,000		160,000
Nonrecurring [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				70,000
Fair Value, Other real estate owned		42,000		55,000
Nonrecurring [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		230,000		1,905,000
Fair Value, Other real estate owned		962,000		1,265,000
Nonrecurring [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		1,323,000		2,369,000
Fair Value, Other real estate owned		107,000		126,000
Nonrecurring [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		58,000
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Mortgage servicing rights		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Mortgage servicing rights		297,000		160,000
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans				0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0		0
Fair Value, Other real estate owned		0		0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		1,611,000		4,344,000
Fair Value, Other real estate owned		1,860,000		2,199,000
Mortgage servicing rights		0		$ 0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned		42,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		230,000
Fair Value, Other real estate owned		962,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		1,323,000
Fair Value, Other real estate owned		107,000
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans		$ 58,000
Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description			Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description		Discount applied to valuation	Discount applied to valuation
Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description		Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description		Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Sales comparison	Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description		Comparison between sales and income approaches	Comparison between sales and income approaches
Sales Comparison Valuation Technique [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Sales comparison
Fair Value Measurements, Sensitivity Analysis, Description		Discount applied to valuation
Income Approach Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Income approach	Income approach
Fair Value Measurements, Sensitivity Analysis, Description		Cap Rate	Cap Rate
Income Approach Valuation Technique [Member] | Nonresidential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Measurements, Valuation Processes, Description		Income approach	Income approach
Fair Value Measurements, Sensitivity Analysis, Description		Cap Rate	Cap Rate
Maximum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate				4.80%
Maximum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		10.00%		43.70%
Maximum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				33.90%
Maximum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		1.24%
Maximum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		34.30%
Maximum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		10.00%		13.80%
Maximum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate				11.00%
Maximum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		8.50%
Maximum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		2.80%		7.70%
Maximum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		17.24%		13.50%
Maximum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				4.20%
Maximum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		58.00%
Fair Value Inputs, Comparability Adjustments				32.30%
Maximum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Land [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		11.68%
Minimum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate				4.80%
Minimum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		10.00%		(2.10%)
Minimum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				(2.10%)
Minimum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		(25.74%)
Minimum [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		34.30%
Minimum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		10.00%		9.60%
Minimum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate				10.00%
Minimum [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		8.50%
Minimum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		(0.35%)		6.30%
Minimum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		(7.70%)		(6.60%)
Minimum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				(21.90%)
Minimum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		58.00%
Fair Value Inputs, Comparability Adjustments				32.30%
Minimum [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Land [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		(67.74%)
Weighted Average [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate				4.80%
Weighted Average [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		10.00%		41.00%
Weighted Average [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				24.00%
Weighted Average [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		(21.00%)
Weighted Average [Member] | Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		34.30%
Weighted Average [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		10.00%		10.00%
Weighted Average [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate				10.00%
Weighted Average [Member] | Impaired Loans [Member] | Income Approach Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Cap Rate		8.50%
Weighted Average [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		0.03%		7.00%
Weighted Average [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments		6.00%		0.40%
Weighted Average [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Comparability Adjustments				(10.00%)
Weighted Average [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Nonresidential Real Estate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		58.00%
Fair Value Inputs, Comparability Adjustments				32.30%
Weighted Average [Member] | Other Real Estate Owned [Member] | Sales Comparison Valuation Technique [Member] | Land [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		7.00%

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Estimated Fair Value of Finanical Instruments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 61,470	$ 59,581	$ 92,925	$ 160,957
Financial assets
Securities, carrying amount	104,242	121,174
Loans receivable, net of allowance for loan losses, carrying amounts	1,162,298	1,172,356
FHLBC stock, carrying amount	6,257	6,257
Accrued interest receivable, carrying amount	4,000	3,926
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial assets
Available-for-sale Securities, Fair Value Disclosure	104,242	121,174
Loans Receivable, Fair Value Disclosure	1,161,317	1,170,525
Accounts Receivable, Fair Value Disclosure	4,000	3,926
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	61,470	59,581
Demand Deposit Accounts Fair Value Disclosure	233,192	134,129
Deposits Savings Deposits Fair Value Disclosure	152,585	154,532
Now Money Market Accounts Fair Value Disclosure	572,860	690,193
Certificates Of Deposit Fair Value Disclosure	222,878	232,588
Short Term Borrowings Fair Value Disclosure	18,049	12,908
Accrued Liabilities, Fair Value Disclosure	46	89
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	8,809	9,693
Demand Deposit Accounts Fair Value Disclosure		0
Deposits Savings Deposits Fair Value Disclosure		0
Now Money Market Accounts 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] | Level 2 [Member]
Financial assets
Available-for-sale Securities, Fair Value Disclosure	103,730	120,665
Loans Receivable, Fair Value Disclosure	1,159,706	1,166,181
Accounts Receivable, Fair Value Disclosure	4,000	3,926
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	52,661	49,888
Demand Deposit Accounts Fair Value Disclosure	233,192	134,129
Deposits Savings Deposits Fair Value Disclosure	152,585	154,532
Now Money Market Accounts Fair Value Disclosure	572,860	690,193
Certificates Of Deposit Fair Value Disclosure	222,878	232,588
Short Term Borrowings Fair Value Disclosure	18,049	12,908
Accrued Liabilities, Fair Value Disclosure	46	89
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]
Financial assets
Loans Receivable, Fair Value Disclosure	1,611	4,344
Reported Value Measurement [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	61,470	59,581
Financial assets
Securities, carrying amount	104,242	121,174
Loans receivable, net of allowance for loan losses, carrying amounts	1,162,298	1,172,356
FHLBC stock, carrying amount	6,257	6,257
Accrued interest receivable, carrying amount	4,000	3,926
Financial liabilities
Demand Deposit Accounts	233,192	134,129
Deposits, Savings Deposits	152,585	154,532
Now Money Market Accounts	572,860	690,193
Certificates of Deposit, at Carrying Value	222,897	232,859
Short-term Debt	18,048	12,921
Accrued Interest Payable	46	89
Equity Funds [Member]
Financial assets
Securities, carrying amount	$ 512	$ 509
Impaired Loans [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		4.80%
Impaired Loans [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	10.00%	43.70%
Impaired Loans [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		33.90%
Impaired Loans [Member] | Maximum [Member] | Income Approach Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Cap Rate	10.00%	13.80%
Impaired Loans [Member] | Maximum [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Cap Rate		11.00%
Impaired Loans [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		4.80%
Impaired Loans [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	10.00%	(2.10%)
Impaired Loans [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		(2.10%)
Impaired Loans [Member] | Minimum [Member] | Income Approach Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Cap Rate	10.00%	9.60%
Impaired Loans [Member] | Minimum [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Cap Rate		10.00%
Impaired Loans [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate		4.80%
Impaired Loans [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	10.00%	41.00%
Impaired Loans [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		24.00%
Impaired Loans [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Cap Rate	10.00%	10.00%
Impaired Loans [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Cap Rate		10.00%
Other Real Estate Owned [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	2.80%	7.70%
Other Real Estate Owned [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	17.24%	13.50%
Other Real Estate Owned [Member] | Maximum [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		4.20%
Other Real Estate Owned [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	(0.35%)	6.30%
Other Real Estate Owned [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	(7.70%)	(6.60%)
Other Real Estate Owned [Member] | Minimum [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		(21.90%)
Other Real Estate Owned [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | One to Four Family Residential Real Estate Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value Inputs, Discount Rate	0.03%	7.00%
Other Real Estate Owned [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | Multi Family Mortgage Loans [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments	6.00%	0.40%
Other Real Estate Owned [Member] | Weighted Average [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member]
Financial liabilities
Fair Value Inputs, Comparability Adjustments		(10.00%)

Repurchase Agreements (Details)

Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Repurchase Agreements [Abstract]
Available-for-sale Securities Pledged as Collateral	$ 6,100	$ 6,800
Carrying Value of Federal Funds Purchased, Securities Sold under Agreements to Repurchase, and Deposits Received for Securities Loaned	3,048	2,921
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	$ 15,000	$ 10,000

Equity Awards (Details)

Equity Awards (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Aug. 10, 2015	Jun. 27, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		0.51%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term		1 year 3 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number			1,215,697
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		18.35%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments		$ 0.0133
Allocated Share-based Compensation Expense	$ 280,000	$ 280,000
weighted average fair value of stock options granted	$ 0.92	$ 0.92
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options	$ 839,000	$ 839,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		1,215,697
Stock Options Outstanding	1,215,697	1,215,697
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms		1 year 8 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 535,000	$ 535,000
stock options exercisable	303,924	303,924
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested	$ 134,000	$ 134,000
Stock Options Fully Vested and Expected to Vest	1,215,697	1,215,697
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 11.99
BankFinancial Corporation 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				3,425,275

Uncategorized Items - bfin-2015

Label	Element	Value
Retained Earnings [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	$ 3,590
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	$ 2,349