BankFinancial (BFIN) 10-Q 30 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 28, 2013
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	30-Sep-13
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2013
Entity Registrant Name	BankFinancial CORP
Entity Central Index Key	1303942
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		21,101,966
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

Consolidated_Statements_of_Fin

Consolidated Statements of Financial Condition (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets
Cash and due from other financial institutions	$18,068	$20,361
Interest-bearing deposits in other financial institutions	225,410	255,403
Cash and cash equivalents	243,478	275,764
Securities, at fair value	83,409	77,832
Loans held-for-sale	15	2,166
Loans receivable, net of allowance for loan losses: September 30, 2013, $15,876 and December 31, 2012, $18,035	1,035,331	1,030,465
Other Real Estate Owned At Carrying Value	5,403	10,358
Stock in Federal Home Loan Bank, at cost	6,068	8,412
Premises and equipment, net	36,154	38,251
Accrued interest receivable	3,576	4,146
Core deposit intangible	2,583	3,038
Bank owned life insurance	21,881	21,645
FDIC prepaid expense	0	2,658
Other assets	4,050	6,457
Total assets	1,441,948	1,481,192
Deposits
Noninterest-bearing	133,094	134,597
Interest-bearing	1,116,739	1,147,754
Total deposits	1,249,833	1,282,351
Borrowings	2,883	5,567
Advance payments by borrowers taxes and insurance	5,825	10,705
Accrued interest payable and other liabilities	9,096	9,679
Total liabilities	1,267,637	1,308,302
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; 21,101,966 shares issued at September 30, 2013 and 21,072,966 shares at December 31, 2012	211	211
Additional paid-in capital	193,567	193,590
Retained earnings (deficit)	-8,425	-9,796
Unearned Employee Stock Ownership Plan shares	-11,501	-12,233
Accumulated other comprehensive income	459	1,118
Total stockholders' equity	174,311	172,890
Total liabilities and stockholders' equity	$1,441,948	$1,481,192

Consolidated_Statements_of_Fin1

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for loan losses	$15,876	$18,035
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	21,101,966	21,072,966

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest and dividend income
Loans, including fees	$11,680	$13,978	$35,812	$45,402
Securities	241	342	710	1,171
Other	186	148	574	353
Total interest income	12,107	14,468	37,096	46,926
Interest expense
Deposits	880	1,010	2,799	3,308
Borrowings	2	26	12	80
Total interest expense	882	1,036	2,811	3,388
Net interest income	11,225	13,432	34,285	43,538
Provision for loan losses	-437	4,453	491	7,194
Net interest income	11,662	8,979	33,794	36,344
Noninterest income
Deposit service charges and fees	520	548	1,528	1,626
Other fee income	373	374	1,158	1,142
Insurance commissions and annuities income	106	125	301	359
Gain on sale of loans, net	32	210	1,445	-595
Gain (Loss) on Disposition of Property	0	-7	0	-164
Loan servicing fees	112	124	349	371
Amortization and impairment of servicing assets	-43	-55	-152	-235
Earnings on bank owned life insurance	84	109	236	355
Trust	172	171	536	545
Other	183	232	513	487
Total noninterest income	1,539	1,831	5,914	5,081
Noninterest expense
Compensation and benefits	6,143	6,353	19,581	19,513
Office occupancy and equipment	1,797	1,904	5,550	6,041
Advertising and public relations	195	145	609	475
Information technology	817	880	2,382	2,553
Supplies, telephone, and postage	382	372	1,246	1,124
Amortization of intangibles	149	156	455	476
Nonperforming asset management	682	1,728	2,031	4,085
Operations of other real estate owned	476	2,742	1,409	4,985
FDIC insurance premiums	476	642	1,445	1,299
Other	1,045	1,110	3,207	2,961
Total noninterest expense	12,162	16,032	37,915	43,512
Income (loss) before income taxes	1,039	-5,222	1,793	-2,087
Income tax expense (benefit)	0	0	0	0
Net income (loss)	$1,039	($5,222)	$1,793	($2,087)
Basic loss per common share (usd per share)	$0.05	($0.26)	$0.09	($0.11)
Diluted loss per common share (usd per share)	$0.05	($0.26)	$0.09	($0.11)
Weighted average common shares outstanding (shares)	20,048,058	19,914,992	20,002,381	19,871,368
Diluted weighted average common shares outstanding (shares)	20,054,092	19,914,992	20,005,197	19,871,368

Consolidated_Statements_Compre

Consolidated Statements Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income (loss)	$1,039	($5,222)	$1,793	($2,087)
Unrealized holding gain (loss) arising during the period	-215	210	-659	174
Tax effect	0	0	0	0
Other comprehensive loss, net of tax effect	-215	210	-659	174
Comprehensive loss	$824	($5,012)	$1,134	($1,913)

Consolidated_Statements_of_Cha

Consolidated Statements of Changes In Stockholders' Equity (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Unearned Employee Stock Ownership Plan Shares	Accumulated Other Comprehensive Income (Loss)
In Thousands, unless otherwise specified
Beginning Balance at Dec. 31, 2011	$199,857	$211	$193,801	$17,946	($13,212)	$1,111
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	-2,087	0	0	-2,087	0	0
Other comprehensive income, net of tax effects	174	0	0	0	0	174
Nonvested stock awards-stock-based compensation expense	41	0	41	0	0	0
Cash dividends declared on common stock (2010: $0.28, 2011: $0.22, 2012: $0.03, per share)	633	0	0	-633	0	0
ESOP shares earned	645		-88	0	733	0
Ending Balance at Sep. 30, 2012	197,997	211	193,754	15,226	-12,479	1,285
Beginning Balance at Dec. 31, 2012	172,890	211	193,590	-9,796	-12,233	1,118
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,793	0	0	1,793	0	0
Other comprehensive income, net of tax effects	-659	0	0	0	0	-659
Nonvested stock awards-stock-based compensation expense	62	0	62	0	0	0
Cash dividends declared on common stock (2010: $0.28, 2011: $0.22, 2012: $0.03, per share)	422		0	-422	0	0
ESOP shares earned	647	0	-85	0	732	0
Ending Balance at Sep. 30, 2013	$174,311	$211	$193,567	($8,425)	($11,501)	$459

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Purchase and retirement of common stock (shares)	0	0
Cash dividends declared on common stock (usd per share)	$0.02	$0.03

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flow (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income (loss)	$1,793	($2,087)
Adjustments to reconcile to net loss to net cash from operating activities
Provision for loan losses	491	7,194
ESOP shares earned	647	645
Stock-based compensation expense	62	41
Depreciation and amortization	3,285	3,417
Amortization of premiums and discounts on securities and loans	-606	2,185
Amortization Of Intangibles	455	476
Amortization and impairment of servicing assets	152	235
Net change in net deferred loan origination costs	-157	-81
Net loss on sale of other real estate owned	182	126
Net gain on sale of loans	-1,445	595
Gain (Loss) on Sale of Property Plant Equipment	0	164
Loans originated for sale	-9,876	13,806
Proceeds from sale of loans	10,750	15,768
REO valuation adjustments	471	0
Net change in:
Accrued interest receivable	570	-1,178
Earnings on bank owned life insurance	-236	-355
Other assets	3,749	-2,380
Accrued interest payable and other liabilities	-583	-1,462
Net cash from operating activities	9,704	14,740
Securities
Proceeds from maturities	25,422	22,424
Proceeds from principal repayments	10,571	15,413
Purchases of securities	-42,351	26,659
Loans receivable
Principal payments on loans receivable	345,906	394,621
Purchase of loans	0	3,190
Originated for investment	-353,764	255,751
Proceeds from sale of loans	2,868	0
Proceeds of redemption of Federal Home Loan Bank of Chicago stock	2,344	-7,279
Proceeds from sale of other real estate owned	7,542	9,872
Purchases of premises and equipment, net	-24	1,885
Net cash from (used in) investing activities	-1,486	162,124
Cash flows from financing activities
Net change in deposits	-32,518	-54,181
Net change in borrowings	-2,684	-2,376
Net change in advance payments by borrowers for taxes and insurance	-4,880	-3,649
Cash dividends paid on common stock	-422	633
Net cash used in financing activities	-40,504	-60,839
Net change in cash and cash equivalents	-32,286	116,025
Beginning cash and cash equivalents	275,764	120,704
Ending cash and cash equivalents	243,478	236,729
Supplemental disclosures of cash flow information:
Interest paid	2,849	3,432
Income taxes paid	0	0
Income taxes refunded	461	1,406
Loans transferred to other real estate owned	$3,268	$6,236

Summary_of_Significant_Account

Summary of Significant Accounting Policies (Notes)	9 Months Ended
	Sep. 30, 2013
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, 2013 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2013.
	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. The allowance for loan losses, mortgage servicing rights, deferred tax assets, goodwill, other intangible assets, stock-based compensation, impairment of securities and fair value of financial instruments are particularly subject to change and the effect of such change could be material to the financial statements.
	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, 2012, as filed with the Securities and Exchange Commission.
	Recent Accounting Pronouncements
	In February 2013, the Financial Accounting Standards Board ("FASB") issued an amendment to improve the reporting of reclassifications out of accumulated other comprehensive income. ASC Topic 220, “Comprehensive Income” amended prior guidance to improve the reporting of reclassifications out of accumulated other comprehensive income by requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income if the amount reclassified is required under GAAP. The Company adopted this new authoritative guidance on January 1, 2013, and it did not have an impact on the Company's statements of operations and financial condition as the Company did not have any amounts reclassified during the three or nine month periods ended September 30, 2013 and 2012.

Loss_Per_Share_Notes

Loss Per Share (Notes)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Loss per Share	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 September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Net income (loss) available to common stockholders	$	1,039		$	(5,222	)	$	1,793		$	(2,087	)
	Average common shares outstanding	21,101,966			21,072,966			21,087,838			21,072,966
	Less:
	Unearned ESOP shares	(1,028,158		)	(1,157,974		)	(1,072,180		)	(1,198,988		)
	Unvested restricted stock shares	(25,750		)	—			(13,277		)	(2,610		)
	Weighted average common shares outstanding	20,048,058			19,914,992			20,002,381			19,871,368
	Add - Net effect of dilutive stock options and unvested restricted stock	6,034			—			2,816			—
	Diluted weighted average common shares outstanding	20,054,092			19,914,992			20,005,197			19,871,368
	Basic earnings (loss) per common share	$	0.05		$	(0.26	)	$	0.09		$	(0.11	)
	Diluted earnings (loss) per common share	$	0.05		$	(0.26	)	$	0.09		$	(0.11	)
	Number of antidilutive stock options excluded from the diluted earnings per share calculation	—			141,000			—			141,000
	Weighted average exercise price of anti-dilutive option shares	$	—		$	17.21		$	—		$	17.21

Securities_Notes

Securities (Notes)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]
SECURITIES	he fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income are shown below.
		Amortized		Gross			Gross			Fair Value
		Cost		Unrealized			Unrealized
				Gains			Losses
	September 30, 2013
	Certificates of deposit	$	34,533	$	—		$	—		$	34,533
	Municipal securities	350		9			—			359
	Equity mutual fund	500		5			—			505
	Mortgage-backed securities - residential	28,864		1,273			(111		)	30,026
	Collateralized mortgage obligations - residential	17,983		38			(72		)	17,949
	SBA-guaranteed loan participation certificates	37		—			—			37
		$	82,267	$	1,325		$	(183	)	$	83,409
	December 31, 2012
	Certificates of deposit	$	33,456	$	—		$	—		$	33,456
	Municipal securities	350		19			—			369
	Equity mutual fund	500		28			—			528
	Mortgage-backed securities - residential	32,572		1,661			—			34,233
	Collateralized mortgage obligations - residential	9,111		95			(2		)	9,204
	SBA-guaranteed loan participation certificates	42		—			—			42
		$	76,031	$	1,803		$	(2	)	$	77,832
	Mortgage-backed securities and collateralized mortgage obligations reflected in the preceding table were issued by U.S. government-sponsored entities or agencies, Freddie Mac, Fannie Mae and Ginnie Mae, and are obligations which the government has affirmed its commitment to support. All securities reflected in the preceding table were classified as available-for-sale at September 30, 2013 and December 31, 2012.
	The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
		September 30, 2013
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	34,703	$	34,704
	Due after one year through five years	180		188
		34,883		34,892
	Equity mutual fund	500		505
	Mortgage-backed securities - residential	28,864		30,026
	Collateralized mortgage obligations - residential	17,983		17,949
	SBA-guaranteed loan participation certificates	37		37
		$	82,267	$	83,409
	Securities with unrealized losses not recognized in income are as follows:
		Less than 12 Months					12 Months or More						Total
		Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Loss			Value			Loss			Value		Loss
	September 30, 2013
	Mortgage-backed securities - residential	$	3,004	$	(111	)	$	—		$	—		$	3,004	$	(111	)
	Collateralized mortgage obligations - residential	11,881		(72		)	—			—			11,881		(72		)
		$	14,885	$	(183	)	$	—		$	—		$	14,885	$	(183	)
	December 31, 2012
	Collateralized mortgage obligations - residential	$	—	$	—		$	1,956		$	(2	)	$	1,956	$	(2	)
	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 a collateralized mortgage obligation that the Company holds in its investment portfolio remained in an unrealized loss position at September 30, 2013, 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.
	There were no sales of securities during the three and nine months ended September 30, 2013 or 2012.

Loans_Receivable_Notes

Loans Receivable (Notes)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]
Loans Receivable	Loans receivable are as follows:
		September 30,				December 31, 2012
		2013
	One-to-four family residential real estate loans	$	204,205			$	218,596
	Multi-family mortgage loans	375,786				352,019
	Nonresidential real estate loans	246,524				264,672
	Construction and land loans	6,429				8,552
	Commercial loans	52,978				61,388
	Commercial leases	161,822				139,783
	Consumer loans	2,561				2,745
	Total loans	1,050,305				1,047,755
	Net deferred loan origination costs	902				745
	Allowance for loan losses	(15,876		)		(18,035		)
	Loans, net	$	1,035,331			$	1,030,465
	The following tables present the balance in the allowance for loan losses and the loans receivable by portfolio segment and based on impairment method:
		Allowance for loan losses																Loan Balances
		Individually				Purchased impaired loans				Collectively				Total				Individually				Purchased		Collectively		Total
		evaluated  for								evaluated  for								evaluated  for				impaired		evaluated  for
		impairment								impairment								impairment				loans		impairment
	30-Sep-13
	One-to-four family residential real estate loans	$	41			$	1			$	3,804			$	3,846			$	4,952			$	405	$	198,848	$	204,205
	Multi-family mortgage loans	469				—				4,406				4,875				12,248				—		363,538		375,786
	Nonresidential real estate loans	224				—				4,569				4,793				5,358				1,611		239,555		246,524
	Construction and land loans	37				—				561				598				1,021				—		5,408		6,429
	Commercial loans	29				—				910				939				272				22		52,684		52,978
	Commercial leases	—				—				728				728				—				—		161,822		161,822
	Consumer loans	—				—				97				97				—				—		2,561		2,561
		$	800			$	1			$	15,075			$	15,876			$	23,851			$	2,038	$	1,024,416	1,050,305
	Net deferred loan origination costs																									902
	Allowance for loan losses																									(15,876		)
	Loans, net																									$	1,035,331
		Allowance for loan losses																Loan Balances
		Individually				Purchased impaired loans				Collectively				Total				Individually				Purchased		Collectively		Total
		evaluated  for								evaluated  for								evaluated  for				impaired		evaluated  for
		impairment								impairment								impairment				loans		impairment
	December 31, 2012
	One-to-four family residential real estate loans	$	137			$	5			$	4,584			$	4,726			$	5,256			$	380	$	212,960	$	218,596
	Multi-family mortgage loans	729				—				3,851				4,580				4,801				—		347,218		352,019
	Nonresidential real estate loans	401				8				5,136				5,545				11,918				2,568		250,186		264,672
	Construction and land loans	294				96				641				1,031				2,210				1,021		5,321		8,552
	Commercial loans	23				1				1,300				1,324				256				20		61,112		61,388
	Commercial leases	—				—				666				666				—				—		139,783		139,783
	Consumer loans	—				—				163				163				—				—		2,745		2,745
		$	1,584			$	110			$	16,341			$	18,035			$	24,441			$	3,989	$	1,019,325	1,047,755
	Net deferred loan origination costs																									745
	Allowance for loan losses																									(18,035		)
	Loans, net																									$	1,030,465
	Activity in the allowance for loan losses are as follows:
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Beginning balance	$	17,097			$	30,878			$	18,035			$	31,726
	Loans charged offs:
	One-to-four family residential real estate loans	(528		)		(3,145		)		(1,073		)		(4,408		)
	Multi-family mortgage loans	(902		)		(2,159		)		(1,512		)		(2,848		)
	Nonresidential real estate loans	(138		)		(5,435		)		(370		)		(8,070		)
	Construction and land loans	(16		)		(806		)		(943		)		(1,038		)
	Commercial loans	(131		)		(3,536		)		(363		)		(3,705		)
	Commercial leases	—				(68		)		—				(68		)
	Consumer loans	(38		)		(72		)		(50		)		(95		)
		(1,753		)		(15,221		)		(4,311		)		(20,232		)
	Recoveries:
	One-to-four family residential real estate loans	108				7				435				192
	Multi-family mortgage loans	3				11				219				491
	Nonresidential real estate loans	329				7				451				322
Construction and land loans	193				6				196				248
Commercial loans	335				421				356				610
Consumer loans	1				26				4				37
	969				478				1,661				1,900
Net charge-off	(784		)		(14,743		)		(2,650		)		(18,332		)
Provision (recovery) for loan losses	(437		)		4,453				491				7,194
Ending balance	$	15,876			$	20,588			$	15,876			$	20,588
The following tables present loans individually evaluated for impairment by class of loans, excluding purchased impaired loans:
																	Three months ended September 30, 2013						Nine months ended September 30, 2013
	Loan				Recorded				Partial Charge-off				Allowance				Average				Interest		Average		Interest
	Balance				Investment								for Loan				Investment				Income		Investment		Income
													Losses				in Impaired				Recognized		in Impaired		Recognized
													Allocated				Loans						Loans
September 30, 2013
With no related allowance recorded:
One-to-four family residential real estate loans	$	5,157			$	3,903			$	1,219			$	—			$	3,780			$	12	$	3,774	$	38
One-to-four family residential real estate loans - non-owner occupied	614				543				40				—				688				—		576		—
Multi-family mortgage loans	8,405				7,464				823				—				7,735				20		5,903		82
Wholesale commercial lending	990				996				—				—				996				—		398		11
Nonresidential real estate loans	3,708				3,113				113				—				3,389				1		4,212		11
Land loans	307				294				8				—				230				—		188		—
Commercial loans - secured	—				—				—				—				131				—		85		—
Commercial loans - unsecured	—				—				—				—				39				—		47		—
	19,181				16,313				2,203				—				16,988				33		15,183		142
With an allowance recorded:
One-to-four family residential real estate loans - non-owner occupied	572				501				61				41				470				—		381		2
Multi-family mortgage loans	4,089				2,766				1,300				373				2,999				8		2,882		88
Wholesale commercial lending	1,038				982				47				96				740				2		493		21
Nonresidential real estate loans	2,611				2,223				299				224				2,494				1		2,464		5
Land loans	922				724				197				37				1,117				—		1,488		—
Commercial loans - secured	462				273				190				29				223				—		344		1
	9,694				7,469				2,094				800				8,043				11		8,052		117
Total	$	28,875			$	23,782			$	4,297			$	800			$	25,031			$	44	$	23,235	$	259
	Loan				Recorded				Partial Charge-off				Allowance				Average				Interest
	Balance				Investment								for Loan				Investment				Income
													Losses				in Impaired				Recognized
													Allocated				Loans
December 31, 2012
With no related allowance recorded:
One-to-four family residential real estate loans	$	5,250			$	4,216			$	1,027			$	—			$	2,814			$	149
One-to-four family residential real estate loans - non-owner occupied	567				534				34				—				4,322				90
Multi-family mortgage loans	2,959				2,106				819				—				9,303				189
Nonresidential real estate loans	11,850				9,220				2,490				—				6,218				347
Land loans	—				—				—				—				409				—
Commercial loans - secured	—				—				—				—				137				—
Commercial loans - other	529				52				477				—				25				21
Non-rated commercial leases	—				—				—				—				23				3
	21,155				16,128				4,847				—				23,251				799
With an allowance recorded:
One-to-four family residential real estate loans	—				—				—				—				2,500				—
One-to-four family residential real estate loans - non-owner occupied	626				499				128				137				1,996				13
Multi-family mortgage loans	3,182				2,645				521				729				6,562				20
Nonresidential real estate loans	2,825				2,549				266				401				21,077				20
Land loans	3,812				2,210				1,602				294				2,933				113
Commercial loans - secured	386				204				182				23				1,849				—
Commercial loans - unsecured	—				—				—				—				267				—
Non-rated commercial leases	—				—				—				—				36				—
Consumer loans	—				—				—				—				2				—
	10,831				8,107				2,699				1,584				37,222				166
Total	$	31,986			$	24,235			$	7,546			$	1,584			$	60,473			$	965
Purchased Impaired Loans
As a result of its acquisition of Downers Grove National Bank, the Company holds purchased loans for which there was evidence of deterioration of credit quality since origination and for which it was probable that all contractually required payments would not be collected as of the date of the acquisition. The carrying amount of these purchased impaired loans are as follows:
	September 30,				December 31, 2012
	2013
One-to-four family residential real estate loans	$	405			$	380
Nonresidential real estate loans	1,611				2,568
Land loans	—				1,021
Commercial loans	22				20
Outstanding balance	$	2,038			$	3,989
Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	$	2,037			$	3,879
Accretable yield, or income expected to be collected, related to purchased impaired loans are as follows:
	Three Months Ended September 30,								Nine Months Ended September 30,
	2013				2012				2013				2012
Beginning balance	$	100			$	832			$	196			$	2,270
New loans purchased	—				—				—				—
Disposals	—				249				—				771
Reclassifications from nonaccretable difference	(2		)		—				1				—
Accretion of income	48				179				147				1,095
Ending balance	$	50			$	404			$	50			$	404
For the above purchased impaired loans, the Company decreased the allowance for loan losses by $51,000 for the three months ended September 30, 2013 and $109,000 for the nine months ended September 30, 2013. The allowance for loan losses was decreased for the above purchased impaired loans by $5,000 for the three months ended September 30, 2012 and was increased by $219,000 during the nine months ended September 30, 2012.
Purchased impaired loans for which it was probable at the date of acquisition that all contractually required payments would not be collected are as follows:
	September 30, 2013				December 31, 2012
Contractually required payments receivable of loans purchased:
One-to-four family residential real estate loans	$	1,143			$	1,143
Nonresidential real estate loans	1,999				3,884
Land loans	—				1,600
Commercial loans	222				597
	$	3,364			$	7,224
At acquisition, cash flows expected to be collected were $18.8 million, compared to the fair value of purchased impaired loans of $15.4 million.
Nonaccrual loans
The following tables present the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans, excluding purchased impaired loans:
	Loan Balance				Recorded				Loans Past
					Investment				Due Over 90
									Days, Still
									Accruing
30-Sep-13
One-to-four family residential real estate loans	$	5,428			$	4,168			$	—
One-to-four family residential real estate loans – non owner occupied	1,372				1,230				89
Multi-family mortgage loans	12,196				9,935				235
Wholesale commercial lending	2,029				1,978				—
Nonresidential real estate loans	7,292				5,335				431
Land loans	1,229				1,018				119
Commercial loans – secured	461				272				5
Commercial loans – unsecured	—				—				86
Consumer loans	2				2				—
	$	30,009			$	23,938			$	965
December 31, 2012
One-to-four family residential real estate loans	$	7,286			$	6,154			$	70
One-to-four family residential real estate loans – non owner occupied	1,420				1,145				—
Multi-family mortgage loans	5,246				3,517				242
Nonresidential real estate loans	12,249				8,985				—
Land loans	3,817				2,210				—
Commercial loans – secured	386				204				—
Commercial loans – unsecured	552				52				17
	$	30,956			$	22,267			$	329
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 $1.3 million and $942,000 at September 30, 2013 and December 31, 2012, respectively. Except for purchased impaired loans, when a loan is on non-accrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable.
Past Due Loans
The following tables present the aging of the recorded investment of loans at September 30, 2013 by class of loans:
	30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
	Past Due				Past Due				Greater				Due				Past Due
									Past Due
One-to-four family residential real estate loans	$	1,034			$	212			$	3,205			$	4,451			$	143,459			$	147,910
One-to-four family residential real estate loans - non-owner occupied	85				172				1,015				1,272				54,770				56,042
Multi-family mortgage loans	—				1,621				9,364				10,985				292,774				303,759
Wholesale commercial lending	—				—				1,643				1,643				68,798				70,441
Nonresidential real estate loans	2,759				400				5,513				8,672				235,174				243,846
Construction loans	—				—				—				—				1,390				1,390
Land loans	—				—				1,137				1,137				3,898				5,035
Commercial loans:
Secured	84				17				277				378				17,821				18,199
Unsecured	—				—				84				84				3,480				3,564
Municipal loans	—				—				—				—				4,222				4,222
Warehouse lines	—				—				—				—				3,767				3,767
Health care	—				—				—				—				17,176				17,176
Other	—				—				—				—				6,198				6,198
Commercial leases:
Investment rated commercial leases	—				—				—				—				122,138				122,138
Below investment grade	—				—				—				—				8,809				8,809
Non-rated	—				—				—				—				28,905				28,905
Lease pools	—				—				—				—				2,934				2,934
Consumer loans	3				—				2				5				2,566				2,571
	$	3,965			$	2,422			$	22,240			$	28,627			$	1,018,279			$	1,046,906
	30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
	Past Due				Past Due				Greater				Due				Past Due
									Past Due
Purchased impaired loans
One-to-four family residential real estate loans - non-owner occupied	$	—			$	—			$	405			$	405			$	—			$	405
Nonresidential real estate loans	—				—				163				163				1,446				1,609
Commercial loans – secured	—				—				22				22				—				22
	$	—			$	—			$	590			$	590			$	1,446			$	2,036
The following tables present the aging of the recorded investment of loans at December 31, 2012 by class of loans:
	30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
	Past Due				Past Due				Greater				Due				Past Due
									Past Due
One-to-four family residential real estate loans	$	1,584			$	778			$	4,463			$	6,825			$	153,279			$	160,104
One-to-four family residential real estate loans - non-owner occupied	855				579				249				1,683				55,906				57,589
Multi-family mortgage loans	5,393				3,049				3,218				11,660				291,103				302,763
Wholesale commercial lending	1,481				—				—				1,481				44,342				45,823
Nonresidential real estate loans	863				398				5,508				6,769				252,368				259,137
Land loans	702				1,220				630				2,552				4,956				7,508
Commercial loans:
Secured	659				3				204				866				22,336				23,202
Unsecured	81				78				16				175				5,774				5,949
Municipal loans	—				—				—				—				4,752				4,752
Warehouse lines	—				—				—				—				2,989				2,989
Health care	—				—				—				—				17,601				17,601
Other	—				—				—				—				6,977				6,977
Commercial leases:
Investment rated commercial leases	—				—				—				—				102,724				102,724
Below investment grade	—				—				—				—				9,294				9,294
Non-rated	—				—				—				—				25,657				25,657
Lease pools	—				—				—				—				3,028				3,028
Consumer loans	15				—				—				15				2,741				2,756
	$	11,633			$	6,105			$	14,288			$	32,026			$	1,005,827			$	1,037,853
	30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
	Past Due				Past Due				Greater				Due				Past Due
									Past Due
Purchased impaired loans
One-to-four family residential real estate loans - non-owner occupied	$	327			$	—			$	53			$	380			$	—			$	380
Nonresidential real estate loans	—				—				1,125				1,125				1,443				2,568
Land loans	—				—				1,021				1,021				—				1,021
Commercial loans – secured	—				—				20				20				—				20
	$	327			$	—			$	2,219			$	2,546			$	1,443			$	3,989
Troubled Debt Restructurings
The Company evaluates loan extensions or modifications in accordance with FASB ASC 310–40 with respect to the classification of the loan as a 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 $5.3 million of TDRs at September 30, 2013, compared to $11.2 million at December 31, 2012, with $94,000 in specific valuation reserves allocated to those loans at September 30, 2013 and $318,000 in specific valuation reserves allocated at December 31, 2012. 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, 2013				December 31, 2012
One-to-four family residential real estate	$	3,040			$	2,802
Multi-family mortgage	1,169				1,201
Nonresidential real estate	—				5,189
Troubled debt restructured loans – accrual loans	4,209				9,192
One-to-four family residential real estate	617				767
Multi-family mortgage	449				938
Nonresidential real estate	—				270
Troubled debt restructured loans – nonaccrual loans	1,066				1,975
Total troubled debt restructured loans	$	5,275			$	11,167
Periodically, the Company will restructure a note into two separate notes (A/B structure), charging off the entire B portion of the note. The A note is structured with appropriate loan-to-value and cash flow coverage ratios that provide for a high likelihood of repayment. The A note is classified as a non-performing note until the borrower has displayed a historical payment performance for a reasonable time prior to and subsequent to the restructuring. A period of sustained repayment for at least six months generally is required to return the A note to accrual status provided that management has determined that the performance is reasonably expected to continue. The A note will be classified as a restructured note (either performing or nonperforming) through the calendar year of the restructuring that the historical payment performance has been established. These notes will be no longer included in the above tables as a TDR in the subsequent calendar year.
During the three and nine months ending September 30, 2013 and 2012, 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,
	2013											2012
	Number			Pre-				Post-				Number			Pre-				Post-
	of loans			Modification				Modification				of loans			Modification				Modification
				outstanding				outstanding							outstanding				outstanding
				recorded				recorded							recorded				recorded
				investment				investment							investment				investment
One-to-four family residential real estate	—			$	—			$	—			17			$	1,441			$	1,441
	Due to				Due to				Due to				Total
	reduction in				extension of				permanent
	interest rate				maturity date				reduction in
									recorded
									investment
For the Three Months ended September 30, 2012
One-to-four family residential real estate	$	—			$	1,441			$	—			$	1,441
The TDRs described above had no impact on interest income, resulted in no change to the allowance for loan losses and resulted in no charge-offs for the three months ended September 30, 2013 and 2012.
	Nine Months Ended September 30,
	2013											2012
	Number			Pre-				Post-				Number			Pre-				Post-
	of loans			Modification				Modification				of loans			Modification				Modification
				outstanding				outstanding							outstanding				outstanding
				recorded				recorded							recorded				recorded
				investment				investment							investment				investment
One-to-four family residential real estate	3			$	950			$	950			24			$	2,100			$	2,100
Multi-family mortgage	—			—				—				1			700				500
Total	3			$	950			$	950			25			$	2,800			$	2,600
	Due to				Due to				Due to				Total
	reduction in				extension of				permanent
	interest rate				maturity date				reduction in
									recorded
									investment
For the Nine Months Ended September 30, 2013
One-to-four family residential real estate	$	—			$	950			$	—			$	950
Total	$	—			$	950			$	—			$	950
For the Nine Months Ended September 30, 2012
One-to-four family residential real estate	$	504			$	1,596			$	—			$	2,100
Multi-family mortgage	—				—				500				500
Total	$	504			$	1,596			$	500			$	2,600
For the nine months ended September 30, 2013 the TDRs described above had no impact on interest income, resulted in no change to the allowance for loan losses and resulted in no charge-offs. For the nine months ended September 30, 2012 the TDRs had no impact on interest income, but increased the allowance for loan losses by $198,000 and resulted in charge-offs of $470,000.
The following table presents TDRs for which there was a payment default during the nine months ended September 30, 2013 and 2012 within twelve months following the modification.
	2013							2012
	Number			Recorded				Number			Recorded
	of loans			investment				of loans			investment
One-to-four family residential real estate	—			$	—			5			$	864
Nonresidential real estate	—			—				4			3,308
Total	—			$	—			9			$	4,172
A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms.
TDRs that subsequently defaulted increased the allowance for loan losses by $1.1 million during the nine months ending September 30, 2012.
The terms of certain other loans were modified during the three and nine months ending September 30, 2013 and 2012 that did not meet the definition of a TDR. These loans had a total recorded investment of $1.1 million and $328,000 at September 30, 2013 and 2012. 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.
Credit Quality Indicators
The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, including current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans based on credit risk. This analysis includes non-homogeneous loans, such as commercial and commercial real estate loans. This analysis is performed on a monthly basis. The Company uses the following definitions for risk ratings:
Special Mention. A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification.
Substandard/Performing. Loans categorized as Substandard/Performing continue to accrue interest, but exhibit a well-defined weakness or weaknesses that may jeopardize the liquidation of the debt. The loans continue to accrue interest because they are well secured and collection of principal and interest is expected within a reasonable time. The risk rating guidance published by the Office of the Comptroller of the Currency clarifies that a loan with a well-defined weakness does not have to present a probability of default for the loan to be rated Substandard, and that an individual loan’s loss potential does not have to be distinct for the loan to be rated Substandard.
Nonaccrual. An asset classified Nonaccrual has all the weaknesses inherent in one classified Substandard/Performing 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, 2013, based on the most recent analysis performed, the risk category of loans by class of loans are as follows:
	Pass				Special				Substandard/Performing				Nonaccrual				Total
					Mention
One-to-four family residential real estate loans	$	143,054			$	325			$	969			$	3,386			$	147,734
One-to-four family residential real estate loans - non-owner occupied	54,206				—				628				1,637				56,471
Multi-family mortgage loans	281,964				7,472				5,262				10,310				305,008
Wholesale commercial lending	64,659				2,706				1,766				1,647				70,778
Nonresidential real estate loans	213,221				10,908				15,427				6,968				246,524
Construction loans	1,388				—				—				—				1,388
Land loans	2,958				—				1,062				1,021				5,041
Commercial loans:
Secured	17,761				—				97				294				18,152
Unsecured	2,305				284				964				—				3,553
Municipal loans	4,192				—				—				—				4,192
Warehouse lines	3,747				—				—				—				3,747
Health care	17,159				—				—				—				17,159
Other	6,175				—				—				—				6,175
Commercial leases:
Investment rated commercial leases	121,439				—				—				—				121,439
Below investment grade	8,739				—				—				—				8,739
Non-rated	28,722				—				—				—				28,722
Lease pools	2,922				—				—				—				2,922
Consumer loans	2,559				—				—				2				2,561
Total	$	977,170			$	21,695			$	26,175			$	25,265			$	1,050,305
As of December 31, 2012, based on the most recent analysis performed, the risk category of loans by class of loans are as follows:
	Pass				Special				Substandard/Performing				Nonaccrual				Total
					Mention
One-to-four family residential real estate loans	$	152,711			$	—			$	1,428			$	6,158			$	160,297
One-to-four family residential real estate loans - non-owner occupied	51,849				1,486				3,440				1,524				58,299
Multi-family mortgage loans	275,338				6,139				21,128				3,559				306,164
Wholesale commercial lending	44,074				—				1,781				—				45,855
Nonresidential real estate loans	199,802				30,898				22,345				11,627				264,672
Construction loans	—				—				—				—				—
Land loans	2,769				158				2,394				3,231				8,552
Commercial loans:
Secured	19,579				2,418				988				225				23,210
Unsecured	4,061				323				1,497				52				5,933
Municipal loans	4,751				—				—				—				4,751
Warehouse lines	2,971				—				—				—				2,971
Health care	17,566				—				—				—				17,566
Other	6,957				—				—				—				6,957
Commercial leases:
Investment rated commercial leases	102,101				—				—				—				102,101
Below investment grade	9,205				—				—				—				9,205
Non-rated	25,466				—				—				—				25,466
Lease pools	3,011				—				—				—				3,011
Consumer loans	2,742				—				3				—				2,745
Total	$	924,953			$	41,422			$	55,004			$	26,376			$	1,047,755

Fair_Value_Notes

Fair Value (Notes)	9 Months Ended
	Sep. 30, 2013
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).
	Loans Held for Sale: Loans held for sale are carried at the lower of cost or fair value, which is evaluated on a pool-level basis. The fair value of loans held for sale is determined using quoted prices for similar assets, adjusted for specific attributes of that loan or other observable market data, such as outstanding commitments from third party investors (Level 2).
	Impaired Loans: At the time a loan is considered impaired, management measures impairment in accordance with ASC Topic 310. The fair value of impaired loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value and discounted cash flows. Impaired loans carried at fair value generally require a partial charge-off and a specific valuation allowance for loan losses. For collateral dependent loans, fair value is commonly based on recent real estate appraisals. These real estate appraisals may include up to three approaches to value: the sales comparison approach, the income approach (for income-producing property) and the cost 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, if applicable. Such adjustments may be significant and typically result in a Level 3 classification of the inputs for determining fair value. In addition, a discount is typically applied to account for sales and holding expenses. 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 accordingly. The method utilized to estimate the fair value of loans does not necessarily represent an exit price.
	Other Real Estate Owned: Assets acquired through foreclosure or transfers in lieu of 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. Although the fair value of the property normally will be based on an appraisal (or other evaluation), the valuation should be consistent with the price that a market participant will pay to purchase the property at the measurement date. Circumstances may exist that indicate that the appraised value is not an accurate measurement of the property's current fair value. Examples of such circumstances include changed economic conditions since the last appraisal, stale appraisals, or imprecision and subjectivity in the appraisal process (i.e., actual sales for less than the appraised amount). Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value.
	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 3).
	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			Significant			Significant			Fair
		Prices in			Observable			Unobservable			Value
		Active			Inputs			Inputs
		Markets for			(Level 2)			(Level 3)
		Identical
		Assets
		(Level 1)
	September 30, 2013
	Securities:
	Certificates of deposit	$	—		$	34,533		$	—		$	34,533
	Municipal securities	—			359			—			359
	Equity mutual fund	505			—			—			505
	Mortgage-backed securities – residential	—			30,026			—			30,026
	Collateralized mortgage obligations – residential	—			17,949			—			17,949
	SBA-guaranteed loan participation certificates	—			37			—			37
		$	505		$	82,904		$	—		$	83,409
	December 31, 2012
	Securities:
	Certificates of deposit	$	—		$	33,456		$	—		$	33,456
	Municipal securities	—			369			—			369
	Equity mutual fund	528			—			—			528
	Mortgage-backed securities - residential	—			34,233			—			34,233
	Collateralized mortgage obligations – residential	—			9,204			—			9,204
	SBA-guaranteed loan participation certificates	—			42			—			42
		$	528		$	77,304		$	—		$	77,832
	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			Significant			Significant			Fair
		Prices in			Observable			Unobservable			Value
		Active Markets			Inputs			Inputs
		for Identical			(Level 2)			(Level 3)
		Assets
		(Level 1)
	September 30, 2013
	Impaired loans:
	One-to-four family residential real estate loans	$	—		$	—		$	512		$	512
	Multi-family mortgage loans	—			—			3,279			3,279
	Nonresidential real estate loans	—			—			1,999			1,999
	Construction and land loans	—			—			687			687
	Commercial loans	—			—			244			244
		$	—		$	—		$	6,721		$	6,721
	Other real estate owned:
	One-to-four family residential real estate loans	$	—		$	—		$	713		$	713
	Nonresidential real estate	—			—			946			946
	Land	—			—			2,509			2,509
		$	—		$	—		$	4,168		$	4,168
	Mortgage servicing rights	$	—		$	—		$	185		$	185
	December 31, 2012
	Impaired loans:
	One-to-four family residential real estate loans	$	—		$	—		$	410		$	410
	Multi-family mortgage loans	—			—			1,916			1,916
	Nonresidential real estate loans	—			—			3,102			3,102
Construction and land loans	—			—			2,841			2,841
Commercial loans	—			—			181			181
	$	—		$	—		$	8,450		$	8,450
Other real estate owned:
One-to-four family residential real estate loans	$	—		$	—		$	1,503		$	1,503
Multi-family mortgage	—			—			720			720
Nonresidential real estate	—			—			3,649			3,649
Land	—			—			3,496			3,496
	$	—		$	—		$	9,368		$	9,368
Mortgage servicing rights	$	—		$	—		$	208		$	208
Impaired loans, including purchased impaired loans, which are measured for impairment using the fair value of the collateral for collateral–dependent loans, with specific valuation allowances, had a carrying amount of $7.5 million, with a valuation allowance of $801,000 at September 30, 2013, compared to $10.0 million, with a valuation allowance of $1.2 million at June 30, 2013, and $10.1 million and a valuation allowance of $1.7 million at December 31, 2012, which had the effect of decreasing the provision for loan losses by $448,000 for the three months ended September 30, 2013 and $893,000 for the nine months ended September 30, 2013.
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, 2013:
	Fair Value			Valuation		Significant Unobservable	Range
				Technique(s)		Input(s)	(Weighted
							Average)
Impaired loans:
One-to-four family residential real estate loans	$	512		Sales comparison		Discount applied to valuation	6%-98%
							-69%
Multi-family mortgage loans	3,279			Sales comparison		Comparison between sales and income approaches	9%-98%
							-46%
				Income approach		Cap Rate	6.7% to 12%
							-7.64%
Nonresidential real estate loans	1,999			Sales comparison		Comparison between sales and income approaches	3%-99%
							-57%
				Income approach		Cap Rate	9.25%
							-9.25%
Construction and land loans	687			Sales comparison		Discount applied to valuation	10%-93%
							-59%
Commercial loans	244			Sales comparison		Discount applied to valuation	10%-91%
							-75%
Impaired loans	$	6,721
Other real estate owned:
One-to-four family residential real estate	$	713		Sales comparison		Discount applied to valuation	7%-34%
							-18%
Nonresidential real estate	946			Sales comparison		Comparison between sales and income approaches	7%-29%
							-16%
Land	2,509			Sales comparison		Discount applied to valuation	7%
							-7%
Other real estate owned	$	4,168
Mortgage servicing rights	$	185		Third party		Present value of future servicing income based on prepayment speeds	11.5 % - 22.9%
				valuation			-15.34%
				Third party		Present value of future servicing income based on default rates	12%
				valuation
The carrying amount and estimated fair value of financial instruments are as follows:
				Fair Value Measurements at
				September 30, 2013 Using:
	Carrying			Level 1			Level 2			Level 3		Total
	Amount
Financial assets
Cash and cash equivalents	$	243,478		$	18,068		$	225,410		$	—	$	243,478
Securities	83,409			505			82,904			—		83,409
Loans held for sale	15			—			15			—		15
Loans receivable, net of allowance for loan losses	1,035,331			—			992,939			6,721		999,660
FHLBC stock	6,068			—			—			—		N/A
Accrued interest receivable	3,576			—			3,576			—		3,576
Financial liabilities												—
Noninterest-bearing demand deposits	$	(133,094	)	$	—		$	(133,094	)	$	—	$	(133,094	)
Savings deposits	(146,685		)	—			(146,685		)	—		(146,685		)
NOW and money market accounts	(690,797		)	—			(690,797		)	—		(690,797		)
Certificates of deposit	(279,257		)	—			(279,812		)	—		(279,812		)
Borrowings	(2,883		)	—			(2,896		)	—		(2,896		)
Accrued interest payable	(119		)	—			(119		)	—		(119		)
				Fair Value Measurements at
				December 31, 2012 Using:
	Carrying			Level 1			Level 2			Level 3		Total
	Amount
Financial assets
Cash and cash equivalents	$	275,764		$	20,361		$	255,403		$	—	$	275,764
Securities	77,832			528			77,304			—		77,832
Loans held for sale	2,166			—			2,166			—		2,166
Loans receivable, net of allowance for loan losses	1,030,465			—			1,017,637			8,450		1,026,087
FHLBC stock	8,412			—			—			—		N/A
Accrued interest receivable	4,146			—			4,146			—		4,146
Financial liabilities
Noninterest-bearing demand deposits	$	(134,597	)	$	—		$	(134,597	)	$	—	$	(134,597	)
Savings deposits	(144,726		)	—			(144,726		)	—		(144,726		)
NOW and money market accounts	(697,775		)	—			(697,775		)	—		(697,775		)
Certificates of deposit	(305,253		)	—			(306,859		)	—		(306,859		)
Borrowings	(5,567		)	—			(5,608		)	—		(5,608		)
Accrued interest payable	(157		)	—			(157		)	—		(157		)
For purposes of the above, 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_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
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, 2013 are not necessarily indicative of the results of operations that may be expected for the year ending December 31, 2013.
		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		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. The allowance for loan losses, mortgage servicing rights, deferred tax assets, goodwill, other intangible assets, stock-based compensation, impairment of securities and fair value of financial instruments are particularly subject to change and the effect of such change could be material to the financial statements.
Uncollected Interest Policy	The Company’s reserve for uncollected loan interest was $1.3 million and $942,000 at September 30, 2013 and December 31, 2012, respectively. Except for purchased impaired loans, when a loan is on non-accrual status and the ultimate collectability of the total principal of an impaired loan is in doubt, all payments are applied to principal under the cost recovery method. Alternatively, when a loan is on non-accrual status but there is doubt concerning only the ultimate collectability of interest, contractual interest is credited to interest income only when received, under the cash basis method pursuant to the provisions of FASB ASC 310–10, as applicable. In all cases, the average balances are calculated based on the month–end balances of the financing receivables within the period reported pursuant to the provisions of FASB ASC 310–10, as applicable.
Reclassifications		Reclassifications: Certain reclassifications have been made in the prior period’s financial statements to conform them to the current period’s presentation.
		These unaudited consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2012, as filed with the Securities and Exchange Commission.
Recent Accounting Pronouncements		Recent Accounting Pronouncements
		In February 2013, the Financial Accounting Standards Board ("FASB") issued an amendment to improve the reporting of reclassifications out of accumulated other comprehensive income. ASC Topic 220, “Comprehensive Income” amended prior guidance to improve the reporting of reclassifications out of accumulated other comprehensive income by requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income if the amount reclassified is required under GAAP. The Company adopted this new authoritative guidance on January 1, 2013, and it did not have an impact on the Company's statements of operations and financial condition as the Company did not have any amounts reclassified during the three or nine month periods ended September 30, 2013 and 2012.

Loss_Per_Share_Tables

Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
Reconciliation of Basic and Diluted Earnings Per Share
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Net income (loss) available to common stockholders	$	1,039		$	(5,222	)	$	1,793		$	(2,087	)
	Average common shares outstanding	21,101,966			21,072,966			21,087,838			21,072,966
	Less:
	Unearned ESOP shares	(1,028,158		)	(1,157,974		)	(1,072,180		)	(1,198,988		)
	Unvested restricted stock shares	(25,750		)	—			(13,277		)	(2,610		)
	Weighted average common shares outstanding	20,048,058			19,914,992			20,002,381			19,871,368
	Add - Net effect of dilutive stock options and unvested restricted stock	6,034			—			2,816			—
	Diluted weighted average common shares outstanding	20,054,092			19,914,992			20,005,197			19,871,368
	Basic earnings (loss) per common share	$	0.05		$	(0.26	)	$	0.09		$	(0.11	)
	Diluted earnings (loss) per common share	$	0.05		$	(0.26	)	$	0.09		$	(0.11	)
	Number of antidilutive stock options excluded from the diluted earnings per share calculation	—			141,000			—			141,000
	Weighted average exercise price of anti-dilutive option shares	$	—		$	17.21		$	—		$	17.21

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)	he fair value of securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income are shown below.
		Amortized		Gross			Gross			Fair Value
		Cost		Unrealized			Unrealized
				Gains			Losses
	September 30, 2013
	Certificates of deposit	$	34,533	$	—		$	—		$	34,533
	Municipal securities	350		9			—			359
	Equity mutual fund	500		5			—			505
	Mortgage-backed securities - residential	28,864		1,273			(111		)	30,026
	Collateralized mortgage obligations - residential	17,983		38			(72		)	17,949
	SBA-guaranteed loan participation certificates	37		—			—			37
		$	82,267	$	1,325		$	(183	)	$	83,409
	December 31, 2012
	Certificates of deposit	$	33,456	$	—		$	—		$	33,456
	Municipal securities	350		19			—			369
	Equity mutual fund	500		28			—			528
	Mortgage-backed securities - residential	32,572		1,661			—			34,233
	Collateralized mortgage obligations - residential	9,111		95			(2		)	9,204
	SBA-guaranteed loan participation certificates	42		—			—			42
		$	76,031	$	1,803		$	(2	)	$	77,832
Amortized cost and fair values of securities	The amortized cost and fair values of securities by contractual maturity are shown below. Securities not due at a single maturity date are shown separately. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
		September 30, 2013
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	34,703	$	34,704
	Due after one year through five years	180		188
		34,883		34,892
	Equity mutual fund	500		505
	Mortgage-backed securities - residential	28,864		30,026
	Collateralized mortgage obligations - residential	17,983		17,949
	SBA-guaranteed loan participation certificates	37		37
		$	82,267	$	83,409
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		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Loss			Value			Loss			Value		Loss
	September 30, 2013
	Mortgage-backed securities - residential	$	3,004	$	(111	)	$	—		$	—		$	3,004	$	(111	)
	Collateralized mortgage obligations - residential	11,881		(72		)	—			—			11,881		(72		)
		$	14,885	$	(183	)	$	—		$	—		$	14,885	$	(183	)
	December 31, 2012
	Collateralized mortgage obligations - residential	$	—	$	—		$	1,956		$	(2	)	$	1,956	$	(2	)

Loans_Receivable_Tables

Loans Receivable (Tables)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]
Loans receivable	Loans receivable are as follows:
		September 30,				December 31, 2012
		2013
	One-to-four family residential real estate loans	$	204,205			$	218,596
	Multi-family mortgage loans	375,786				352,019
	Nonresidential real estate loans	246,524				264,672
	Construction and land loans	6,429				8,552
	Commercial loans	52,978				61,388
	Commercial leases	161,822				139,783
	Consumer loans	2,561				2,745
	Total loans	1,050,305				1,047,755
	Net deferred loan origination costs	902				745
	Allowance for loan losses	(15,876		)		(18,035		)
	Loans, net	$	1,035,331			$	1,030,465
Allowance for loan losses and the loans receivable by portfolio segment	The following tables present the balance in the allowance for loan losses and the loans receivable by portfolio segment and based on impairment method:
		Allowance for loan losses																Loan Balances
		Individually				Purchased impaired loans				Collectively				Total				Individually				Purchased		Collectively		Total
		evaluated  for								evaluated  for								evaluated  for				impaired		evaluated  for
		impairment								impairment								impairment				loans		impairment
	30-Sep-13
	One-to-four family residential real estate loans	$	41			$	1			$	3,804			$	3,846			$	4,952			$	405	$	198,848	$	204,205
	Multi-family mortgage loans	469				—				4,406				4,875				12,248				—		363,538		375,786
	Nonresidential real estate loans	224				—				4,569				4,793				5,358				1,611		239,555		246,524
	Construction and land loans	37				—				561				598				1,021				—		5,408		6,429
	Commercial loans	29				—				910				939				272				22		52,684		52,978
	Commercial leases	—				—				728				728				—				—		161,822		161,822
	Consumer loans	—				—				97				97				—				—		2,561		2,561
		$	800			$	1			$	15,075			$	15,876			$	23,851			$	2,038	$	1,024,416	1,050,305
	Net deferred loan origination costs																									902
	Allowance for loan losses																									(15,876		)
	Loans, net																									$	1,035,331
		Allowance for loan losses																Loan Balances
		Individually				Purchased impaired loans				Collectively				Total				Individually				Purchased		Collectively		Total
		evaluated  for								evaluated  for								evaluated  for				impaired		evaluated  for
		impairment								impairment								impairment				loans		impairment
	December 31, 2012
	One-to-four family residential real estate loans	$	137			$	5			$	4,584			$	4,726			$	5,256			$	380	$	212,960	$	218,596
	Multi-family mortgage loans	729				—				3,851				4,580				4,801				—		347,218		352,019
	Nonresidential real estate loans	401				8				5,136				5,545				11,918				2,568		250,186		264,672
	Construction and land loans	294				96				641				1,031				2,210				1,021		5,321		8,552
	Commercial loans	23				1				1,300				1,324				256				20		61,112		61,388
	Commercial leases	—				—				666				666				—				—		139,783		139,783
	Consumer loans	—				—				163				163				—				—		2,745		2,745
		$	1,584			$	110			$	16,341			$	18,035			$	24,441			$	3,989	$	1,019,325	1,047,755
	Net deferred loan origination costs																									745
	Allowance for loan losses																									(18,035		)
	Loans, net																									$	1,030,465
Allowance for loan losses	Activity in the allowance for loan losses are as follows:
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Beginning balance	$	17,097			$	30,878			$	18,035			$	31,726
	Loans charged offs:
	One-to-four family residential real estate loans	(528		)		(3,145		)		(1,073		)		(4,408		)
	Multi-family mortgage loans	(902		)		(2,159		)		(1,512		)		(2,848		)
	Nonresidential real estate loans	(138		)		(5,435		)		(370		)		(8,070		)
	Construction and land loans	(16		)		(806		)		(943		)		(1,038		)
	Commercial loans	(131		)		(3,536		)		(363		)		(3,705		)
	Commercial leases	—				(68		)		—				(68		)
	Consumer loans	(38		)		(72		)		(50		)		(95		)
		(1,753		)		(15,221		)		(4,311		)		(20,232		)
	Recoveries:
	One-to-four family residential real estate loans	108				7				435				192
	Multi-family mortgage loans	3				11				219				491
	Nonresidential real estate loans	329				7				451				322
	Construction and land loans	193				6				196				248
	Commercial loans	335				421				356				610
	Consumer loans	1				26				4				37
		969				478				1,661				1,900
	Net charge-off	(784		)		(14,743		)		(2,650		)		(18,332		)
	Provision (recovery) for loan losses	(437		)		4,453				491				7,194
	Ending balance	$	15,876			$	20,588			$	15,876			$	20,588
Loans Individually Evaluated For Impairment By Class Loans	The following tables present loans individually evaluated for impairment by class of loans, excluding purchased impaired loans:
																		Three months ended September 30, 2013						Nine months ended September 30, 2013
		Loan				Recorded				Partial Charge-off				Allowance				Average				Interest		Average		Interest
		Balance				Investment								for Loan				Investment				Income		Investment		Income
														Losses				in Impaired				Recognized		in Impaired		Recognized
														Allocated				Loans						Loans
	September 30, 2013
	With no related allowance recorded:
	One-to-four family residential real estate loans	$	5,157			$	3,903			$	1,219			$	—			$	3,780			$	12	$	3,774	$	38
	One-to-four family residential real estate loans - non-owner occupied	614				543				40				—				688				—		576		—
	Multi-family mortgage loans	8,405				7,464				823				—				7,735				20		5,903		82
	Wholesale commercial lending	990				996				—				—				996				—		398		11
	Nonresidential real estate loans	3,708				3,113				113				—				3,389				1		4,212		11
	Land loans	307				294				8				—				230				—		188		—
	Commercial loans - secured	—				—				—				—				131				—		85		—
	Commercial loans - unsecured	—				—				—				—				39				—		47		—
		19,181				16,313				2,203				—				16,988				33		15,183		142
	With an allowance recorded:
	One-to-four family residential real estate loans - non-owner occupied	572				501				61				41				470				—		381		2
	Multi-family mortgage loans	4,089				2,766				1,300				373				2,999				8		2,882		88
	Wholesale commercial lending	1,038				982				47				96				740				2		493		21
	Nonresidential real estate loans	2,611				2,223				299				224				2,494				1		2,464		5
	Land loans	922				724				197				37				1,117				—		1,488		—
	Commercial loans - secured	462				273				190				29				223				—		344		1
		9,694				7,469				2,094				800				8,043				11		8,052		117
	Total	$	28,875			$	23,782			$	4,297			$	800			$	25,031			$	44	$	23,235	$	259
		Loan				Recorded				Partial Charge-off				Allowance				Average				Interest
		Balance				Investment								for Loan				Investment				Income
														Losses				in Impaired				Recognized
														Allocated				Loans
	December 31, 2012
	With no related allowance recorded:
	One-to-four family residential real estate loans	$	5,250			$	4,216			$	1,027			$	—			$	2,814			$	149
	One-to-four family residential real estate loans - non-owner occupied	567				534				34				—				4,322				90
	Multi-family mortgage loans	2,959				2,106				819				—				9,303				189
	Nonresidential real estate loans	11,850				9,220				2,490				—				6,218				347
	Land loans	—				—				—				—				409				—
	Commercial loans - secured	—				—				—				—				137				—
	Commercial loans - other	529				52				477				—				25				21
	Non-rated commercial leases	—				—				—				—				23				3
		21,155				16,128				4,847				—				23,251				799
	With an allowance recorded:
	One-to-four family residential real estate loans	—				—				—				—				2,500				—
	One-to-four family residential real estate loans - non-owner occupied	626				499				128				137				1,996				13
	Multi-family mortgage loans	3,182				2,645				521				729				6,562				20
	Nonresidential real estate loans	2,825				2,549				266				401				21,077				20
	Land loans	3,812				2,210				1,602				294				2,933				113
	Commercial loans - secured	386				204				182				23				1,849				—
	Commercial loans - unsecured	—				—				—				—				267				—
	Non-rated commercial leases	—				—				—				—				36				—
	Consumer loans	—				—				—				—				2				—
		10,831				8,107				2,699				1,584				37,222				166
	Total	$	31,986			$	24,235			$	7,546			$	1,584			$	60,473			$	965
Carrying Amount Of Purchased Impaired Loans	The carrying amount of these purchased impaired loans are as follows:
		September 30,				December 31, 2012
		2013
	One-to-four family residential real estate loans	$	405			$	380
	Nonresidential real estate loans	1,611				2,568
	Land loans	—				1,021
	Commercial loans	22				20
	Outstanding balance	$	2,038			$	3,989
	Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	$	2,037			$	3,879
Accretable Yield Or Income Expected To Be Collected Related To Purchased Impaired Loans	Accretable yield, or income expected to be collected, related to purchased impaired loans are as follows:
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Beginning balance	$	100			$	832			$	196			$	2,270
	New loans purchased	—				—				—				—
	Disposals	—				249				—				771
	Reclassifications from nonaccretable difference	(2		)		—				1				—
	Accretion of income	48				179				147				1,095
	Ending balance	$	50			$	404			$	50			$	404
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period	Purchased impaired loans for which it was probable at the date of acquisition that all contractually required payments would not be collected are as follows:
		September 30, 2013				December 31, 2012
	Contractually required payments receivable of loans purchased:
	One-to-four family residential real estate loans	$	1,143			$	1,143
	Nonresidential real estate loans	1,999				3,884
	Land loans	—				1,600
	Commercial loans	222				597
		$	3,364			$	7,224
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, excluding purchased impaired loans:
		Loan Balance				Recorded				Loans Past
						Investment				Due Over 90
										Days, Still
										Accruing
	30-Sep-13
	One-to-four family residential real estate loans	$	5,428			$	4,168			$	—
	One-to-four family residential real estate loans – non owner occupied	1,372				1,230				89
	Multi-family mortgage loans	12,196				9,935				235
	Wholesale commercial lending	2,029				1,978				—
	Nonresidential real estate loans	7,292				5,335				431
	Land loans	1,229				1,018				119
	Commercial loans – secured	461				272				5
	Commercial loans – unsecured	—				—				86
	Consumer loans	2				2				—
		$	30,009			$	23,938			$	965
	December 31, 2012
	One-to-four family residential real estate loans	$	7,286			$	6,154			$	70
	One-to-four family residential real estate loans – non owner occupied	1,420				1,145				—
	Multi-family mortgage loans	5,246				3,517				242
	Nonresidential real estate loans	12,249				8,985				—
	Land loans	3,817				2,210				—
	Commercial loans – secured	386				204				—
	Commercial loans – unsecured	552				52				17
		$	30,956			$	22,267			$	329
Past Due Financing Receivables	The following tables present the aging of the recorded investment of loans at September 30, 2013 by class of loans:
		30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
		Past Due				Past Due				Greater				Due				Past Due
										Past Due
	One-to-four family residential real estate loans	$	1,034			$	212			$	3,205			$	4,451			$	143,459			$	147,910
	One-to-four family residential real estate loans - non-owner occupied	85				172				1,015				1,272				54,770				56,042
	Multi-family mortgage loans	—				1,621				9,364				10,985				292,774				303,759
	Wholesale commercial lending	—				—				1,643				1,643				68,798				70,441
	Nonresidential real estate loans	2,759				400				5,513				8,672				235,174				243,846
	Construction loans	—				—				—				—				1,390				1,390
	Land loans	—				—				1,137				1,137				3,898				5,035
	Commercial loans:
	Secured	84				17				277				378				17,821				18,199
	Unsecured	—				—				84				84				3,480				3,564
	Municipal loans	—				—				—				—				4,222				4,222
	Warehouse lines	—				—				—				—				3,767				3,767
	Health care	—				—				—				—				17,176				17,176
	Other	—				—				—				—				6,198				6,198
	Commercial leases:
	Investment rated commercial leases	—				—				—				—				122,138				122,138
	Below investment grade	—				—				—				—				8,809				8,809
	Non-rated	—				—				—				—				28,905				28,905
	Lease pools	—				—				—				—				2,934				2,934
	Consumer loans	3				—				2				5				2,566				2,571
		$	3,965			$	2,422			$	22,240			$	28,627			$	1,018,279			$	1,046,906
	at December 31, 2012 by class of loans:
		30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
		Past Due				Past Due				Greater				Due				Past Due
										Past Due
	One-to-four family residential real estate loans	$	1,584			$	778			$	4,463			$	6,825			$	153,279			$	160,104
	One-to-four family residential real estate loans - non-owner occupied	855				579				249				1,683				55,906				57,589
	Multi-family mortgage loans	5,393				3,049				3,218				11,660				291,103				302,763
	Wholesale commercial lending	1,481				—				—				1,481				44,342				45,823
	Nonresidential real estate loans	863				398				5,508				6,769				252,368				259,137
	Land loans	702				1,220				630				2,552				4,956				7,508
	Commercial loans:
	Secured	659				3				204				866				22,336				23,202
	Unsecured	81				78				16				175				5,774				5,949
	Municipal loans	—				—				—				—				4,752				4,752
	Warehouse lines	—				—				—				—				2,989				2,989
	Health care	—				—				—				—				17,601				17,601
	Other	—				—				—				—				6,977				6,977
	Commercial leases:
	Investment rated commercial leases	—				—				—				—				102,724				102,724
	Below investment grade	—				—				—				—				9,294				9,294
	Non-rated	—				—				—				—				25,657				25,657
	Lease pools	—				—				—				—				3,028				3,028
	Consumer loans	15				—				—				15				2,741				2,756
		$	11,633			$	6,105			$	14,288			$	32,026			$	1,005,827			$	1,037,853
		30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
		Past Due				Past Due				Greater				Due				Past Due
										Past Due
	Purchased impaired loans
	One-to-four family residential real estate loans - non-owner occupied	$	327			$	—			$	53			$	380			$	—			$	380
	Nonresidential real estate loans	—				—				1,125				1,125				1,443				2,568
	Land loans	—				—				1,021				1,021				—				1,021
	Commercial loans – secured	—				—				20				20				—				20
		$	327			$	—			$	2,219			$	2,546			$	1,443			$	3,989
Recorded Investment In Past Due Purchased Impaired Loans
		30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
		Past Due				Past Due				Greater				Due				Past Due
										Past Due
	Purchased impaired loans
	One-to-four family residential real estate loans - non-owner occupied	$	—			$	—			$	405			$	405			$	—			$	405
	Nonresidential real estate loans	—				—				163				163				1,446				1,609
	Commercial loans – secured	—				—				22				22				—				22
		$	—			$	—			$	590			$	590			$	1,446			$	2,036
		30-59 Days				60-89 Days				90 Days or				Total Past				Loans Not				Total
		Past Due				Past Due				Greater				Due				Past Due
										Past Due
	Purchased impaired loans
	One-to-four family residential real estate loans - non-owner occupied	$	327			$	—			$	53			$	380			$	—			$	380
	Nonresidential real estate loans	—				—				1,125				1,125				1,443				2,568
	Land loans	—				—				1,021				1,021				—				1,021
	Commercial loans – secured	—				—				20				20				—				20
		$	327			$	—			$	2,219			$	2,546			$	1,443			$	3,989
Troubled Debt Restructurings on Financing Receivables	The following table presents loans classified as TDRs:
		September 30, 2013				December 31, 2012
	One-to-four family residential real estate	$	3,040			$	2,802
	Multi-family mortgage	1,169				1,201
	Nonresidential real estate	—				5,189
	Troubled debt restructured loans – accrual loans	4,209				9,192
	One-to-four family residential real estate	617				767
	Multi-family mortgage	449				938
	Nonresidential real estate	—				270
	Troubled debt restructured loans – nonaccrual loans	1,066				1,975
	Total troubled debt restructured loans	$	5,275			$	11,167
Loans By Class Modified As Troubled Debt Restructuring On Financing Receivables
		Three Months Ended September 30,
		2013											2012
		Number			Pre-				Post-				Number			Pre-				Post-
		of loans			Modification				Modification				of loans			Modification				Modification
					outstanding				outstanding							outstanding				outstanding
					recorded				recorded							recorded				recorded
					investment				investment							investment				investment
	One-to-four family residential real estate	—			$	—			$	—			17			$	1,441			$	1,441
		Due to				Due to				Due to				Total
		reduction in				extension of				permanent
		interest rate				maturity date				reduction in
										recorded
										investment
	For the Three Months ended September 30, 2012
	One-to-four family residential real estate	$	—			$	1,441			$	—			$	1,441
	The TDRs described above had no impact on interest income, resulted in no change to the allowance for loan losses and resulted in no charge-offs for the three months ended September 30, 2013 and 2012.
		Nine Months Ended September 30,
		2013											2012
		Number			Pre-				Post-				Number			Pre-				Post-
		of loans			Modification				Modification				of loans			Modification				Modification
					outstanding				outstanding							outstanding				outstanding
					recorded				recorded							recorded				recorded
					investment				investment							investment				investment
	One-to-four family residential real estate	3			$	950			$	950			24			$	2,100			$	2,100
	Multi-family mortgage	—			—				—				1			700				500
	Total	3			$	950			$	950			25			$	2,800			$	2,600
		Due to				Due to				Due to				Total
		reduction in				extension of				permanent
		interest rate				maturity date				reduction in
										recorded
										investment
	For the Nine Months Ended September 30, 2013
	One-to-four family residential real estate	$	—			$	950			$	—			$	950
	Total	$	—			$	950			$	—			$	950
	For the Nine Months Ended September 30, 2012
	One-to-four family residential real estate	$	504			$	1,596			$	—			$	2,100
	Multi-family mortgage	—				—				500				500
	Total	$	504			$	1,596			$	500			$	2,600
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 ended September 30, 2013 and 2012 within twelve months following the modification.
		2013							2012
		Number			Recorded				Number			Recorded
		of loans			investment				of loans			investment
	One-to-four family residential real estate	—			$	—			5			$	864
	Nonresidential real estate	—			—				4			3,308
	Total	—			$	—			9			$	4,172
Financing Receivable Credit Quality Indicators	As of September 30, 2013, based on the most recent analysis performed, the risk category of loans by class of loans are as follows:
		Pass				Special				Substandard/Performing				Nonaccrual				Total
						Mention
	One-to-four family residential real estate loans	$	143,054			$	325			$	969			$	3,386			$	147,734
	One-to-four family residential real estate loans - non-owner occupied	54,206				—				628				1,637				56,471
	Multi-family mortgage loans	281,964				7,472				5,262				10,310				305,008
	Wholesale commercial lending	64,659				2,706				1,766				1,647				70,778
	Nonresidential real estate loans	213,221				10,908				15,427				6,968				246,524
	Construction loans	1,388				—				—				—				1,388
	Land loans	2,958				—				1,062				1,021				5,041
	Commercial loans:
	Secured	17,761				—				97				294				18,152
	Unsecured	2,305				284				964				—				3,553
	Municipal loans	4,192				—				—				—				4,192
	Warehouse lines	3,747				—				—				—				3,747
	Health care	17,159				—				—				—				17,159
	Other	6,175				—				—				—				6,175
	Commercial leases:
	Investment rated commercial leases	121,439				—				—				—				121,439
	Below investment grade	8,739				—				—				—				8,739
	Non-rated	28,722				—				—				—				28,722
	Lease pools	2,922				—				—				—				2,922
	Consumer loans	2,559				—				—				2				2,561
	Total	$	977,170			$	21,695			$	26,175			$	25,265			$	1,050,305
	As of December 31, 2012, based on the most recent analysis performed, the risk category of loans by class of loans are as follows:
		Pass				Special				Substandard/Performing				Nonaccrual				Total
						Mention
	One-to-four family residential real estate loans	$	152,711			$	—			$	1,428			$	6,158			$	160,297
	One-to-four family residential real estate loans - non-owner occupied	51,849				1,486				3,440				1,524				58,299
	Multi-family mortgage loans	275,338				6,139				21,128				3,559				306,164
	Wholesale commercial lending	44,074				—				1,781				—				45,855
	Nonresidential real estate loans	199,802				30,898				22,345				11,627				264,672
	Construction loans	—				—				—				—				—
	Land loans	2,769				158				2,394				3,231				8,552
	Commercial loans:
	Secured	19,579				2,418				988				225				23,210
	Unsecured	4,061				323				1,497				52				5,933
	Municipal loans	4,751				—				—				—				4,751
	Warehouse lines	2,971				—				—				—				2,971
	Health care	17,566				—				—				—				17,566
	Other	6,957				—				—				—				6,957
	Commercial leases:
	Investment rated commercial leases	102,101				—				—				—				102,101
	Below investment grade	9,205				—				—				—				9,205
	Non-rated	25,466				—				—				—				25,466
	Lease pools	3,011				—				—				—				3,011
	Consumer loans	2,742				—				3				—				2,745
	Total	$	924,953			$	41,422			$	55,004			$	26,376			$	1,047,755

Fair_Value_Tables

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2013
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			Significant			Significant			Fair
		Prices in			Observable			Unobservable			Value
		Active			Inputs			Inputs
		Markets for			(Level 2)			(Level 3)
		Identical
		Assets
		(Level 1)
	September 30, 2013
	Securities:
	Certificates of deposit	$	—		$	34,533		$	—		$	34,533
	Municipal securities	—			359			—			359
	Equity mutual fund	505			—			—			505
	Mortgage-backed securities – residential	—			30,026			—			30,026
	Collateralized mortgage obligations – residential	—			17,949			—			17,949
	SBA-guaranteed loan participation certificates	—			37			—			37
		$	505		$	82,904		$	—		$	83,409
	December 31, 2012
	Securities:
	Certificates of deposit	$	—		$	33,456		$	—		$	33,456
	Municipal securities	—			369			—			369
	Equity mutual fund	528			—			—			528
	Mortgage-backed securities - residential	—			34,233			—			34,233
	Collateralized mortgage obligations – residential	—			9,204			—			9,204
	SBA-guaranteed loan participation certificates	—			42			—			42
		$	528		$	77,304		$	—		$	77,832
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			Significant			Significant			Fair
		Prices in			Observable			Unobservable			Value
		Active Markets			Inputs			Inputs
		for Identical			(Level 2)			(Level 3)
		Assets
		(Level 1)
	September 30, 2013
	Impaired loans:
	One-to-four family residential real estate loans	$	—		$	—		$	512		$	512
	Multi-family mortgage loans	—			—			3,279			3,279
	Nonresidential real estate loans	—			—			1,999			1,999
	Construction and land loans	—			—			687			687
	Commercial loans	—			—			244			244
		$	—		$	—		$	6,721		$	6,721
	Other real estate owned:
	One-to-four family residential real estate loans	$	—		$	—		$	713		$	713
	Nonresidential real estate	—			—			946			946
	Land	—			—			2,509			2,509
		$	—		$	—		$	4,168		$	4,168
	Mortgage servicing rights	$	—		$	—		$	185		$	185
	December 31, 2012
	Impaired loans:
	One-to-four family residential real estate loans	$	—		$	—		$	410		$	410
	Multi-family mortgage loans	—			—			1,916			1,916
	Nonresidential real estate loans	—			—			3,102			3,102
	Construction and land loans	—			—			2,841			2,841
	Commercial loans	—			—			181			181
		$	—		$	—		$	8,450		$	8,450
	Other real estate owned:
	One-to-four family residential real estate loans	$	—		$	—		$	1,503		$	1,503
	Multi-family mortgage	—			—			720			720
	Nonresidential real estate	—			—			3,649			3,649
	Land	—			—			3,496			3,496
		$	—		$	—		$	9,368		$	9,368
	Mortgage servicing rights	$	—		$	—		$	208		$	208
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, 2013:
		Fair Value			Valuation		Significant Unobservable	Range
					Technique(s)		Input(s)	(Weighted
								Average)
	Impaired loans:
	One-to-four family residential real estate loans	$	512		Sales comparison		Discount applied to valuation	6%-98%
								-69%
	Multi-family mortgage loans	3,279			Sales comparison		Comparison between sales and income approaches	9%-98%
								-46%
					Income approach		Cap Rate	6.7% to 12%
								-7.64%
	Nonresidential real estate loans	1,999			Sales comparison		Comparison between sales and income approaches	3%-99%
								-57%
					Income approach		Cap Rate	9.25%
								-9.25%
	Construction and land loans	687			Sales comparison		Discount applied to valuation	10%-93%
								-59%
	Commercial loans	244			Sales comparison		Discount applied to valuation	10%-91%
								-75%
	Impaired loans	$	6,721
	Other real estate owned:
	One-to-four family residential real estate	$	713		Sales comparison		Discount applied to valuation	7%-34%
								-18%
	Nonresidential real estate	946			Sales comparison		Comparison between sales and income approaches	7%-29%
								-16%
	Land	2,509			Sales comparison		Discount applied to valuation	7%
								-7%
	Other real estate owned	$	4,168
	Mortgage servicing rights	$	185		Third party		Present value of future servicing income based on prepayment speeds	11.5 % - 22.9%
					valuation			-15.34%
					Third party		Present value of future servicing income based on default rates	12%
					valuation
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, 2013 Using:
		Carrying			Level 1			Level 2			Level 3		Total
		Amount
	Financial assets
	Cash and cash equivalents	$	243,478		$	18,068		$	225,410		$	—	$	243,478
	Securities	83,409			505			82,904			—		83,409
	Loans held for sale	15			—			15			—		15
	Loans receivable, net of allowance for loan losses	1,035,331			—			992,939			6,721		999,660
	FHLBC stock	6,068			—			—			—		N/A
	Accrued interest receivable	3,576			—			3,576			—		3,576
	Financial liabilities												—
	Noninterest-bearing demand deposits	$	(133,094	)	$	—		$	(133,094	)	$	—	$	(133,094	)
	Savings deposits	(146,685		)	—			(146,685		)	—		(146,685		)
	NOW and money market accounts	(690,797		)	—			(690,797		)	—		(690,797		)
	Certificates of deposit	(279,257		)	—			(279,812		)	—		(279,812		)
	Borrowings	(2,883		)	—			(2,896		)	—		(2,896		)
	Accrued interest payable	(119		)	—			(119		)	—		(119		)
					Fair Value Measurements at
					December 31, 2012 Using:
		Carrying			Level 1			Level 2			Level 3		Total
		Amount
	Financial assets
	Cash and cash equivalents	$	275,764		$	20,361		$	255,403		$	—	$	275,764
	Securities	77,832			528			77,304			—		77,832
	Loans held for sale	2,166			—			2,166			—		2,166
	Loans receivable, net of allowance for loan losses	1,030,465			—			1,017,637			8,450		1,026,087
	FHLBC stock	8,412			—			—			—		N/A
	Accrued interest receivable	4,146			—			4,146			—		4,146
	Financial liabilities
	Noninterest-bearing demand deposits	$	(134,597	)	$	—		$	(134,597	)	$	—	$	(134,597	)
	Savings deposits	(144,726		)	—			(144,726		)	—		(144,726		)
	NOW and money market accounts	(697,775		)	—			(697,775		)	—		(697,775		)
	Certificates of deposit	(305,253		)	—			(306,859		)	—		(306,859		)
	Borrowings	(5,567		)	—			(5,608		)	—		(5,608		)
	Accrued interest payable	(157		)	—			(157		)	—		(157		)

Loss_Per_Share_Details

Loss Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share, Basic and Diluted [Abstract]
Net loss available to common stockholders	$1,039	($5,222)	$1,793	($2,087)
Average common shares outstanding (shares)	21,101,966	21,072,966	21,087,838	21,072,966
Less:
Unvested restricted stock shares (shares)	25,750	0	13,277	2,610
Weighted average common shares outstanding (shares)	20,048,058	19,914,992	20,002,381	19,871,368
Unearned Employee Stock Ownership Plan shares	-1,028,158	-1,157,974	-1,072,180	-1,198,988
Add - Net effect of dilutive stock options and unvested restricted stock	6,034	0	2,816	0
Weighted average diluted common shares outstanding (shares)	20,054,092	19,914,992	20,005,197	19,871,368
Basic loss per common share (usd per share)	$0.05	($0.26)	$0.09	($0.11)
Diluted earnings (loss) per common share (usd per share)	$0.05	($0.26)	$0.09	($0.11)
Number of anti-dilutive stock options excluded from the diluted earnings per share calculation (shares)	0	141,000	0	141,000

Loss_Per_Share_Weighted_Averag

Loss Per Share Weighted Average Exercise Price of Anti Dilutive Stock Options (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Exercise Price of Anti Dilutive Stock Options	$0	$17.21	$0	$17.21

Securities_Fair_Value_of_Secur

Securities - Fair Value of Securites (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	$82,267	$76,031
Gross Unrealized Gains	1,325	1,803
Gross Unrealized Losses	-183	-2
Total Fair value	83,409	77,832
Certificates of deposit [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	34,533	33,456
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Total Fair value	34,533	33,456
Municipal securities [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	350	350
Gross Unrealized Gains	9	19
Gross Unrealized Losses	0	0
Total Fair value	359	369
Equity mutual fund [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	500	500
Gross Unrealized Gains	5	28
Gross Unrealized Losses	0	0
Total Fair value	505	528
Mortgage - backed securities - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	28,864	32,572
Gross Unrealized Gains	1,273	1,661
Gross Unrealized Losses	-111	0
Total Fair value	30,026	34,233
Collateralized mortgage obligations - residential [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	17,983	9,111
Gross Unrealized Gains	38	95
Gross Unrealized Losses	-72	-2
Total Fair value	17,949	9,204
SBA-guaranteed loan participation certificates [Member]
Unrealized gains and losses recognized in accumulated other comprehensive income (loss)
Amortized Cost	37	42
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Total Fair value	$37	$42

Securities_Amortized_Cost_and_

Securities - Amortized Cost and Fair Value (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Amortized cost and fair values of securities
Due in one year or less, amortized cost	$34,703
Due in one year or less, fair value	34,704
Due after one year through five years, amortized cost	180
Due after one year through five years, fair value	188
Amortized Cost	34,883
Fair value	34,892
Total amortized cost	82,267	76,031
Total Fair value	83,409	77,832
Equity mutual fund [Member]
Amortized cost and fair values of securities
Total amortized cost	500	500
Total Fair value	505	528
Mortgage - backed securities - residential [Member]
Amortized cost and fair values of securities
Total amortized cost	28,864	32,572
Total Fair value	30,026	34,233
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Total amortized cost	17,983	9,111
Total Fair value	17,949	9,204
SBA-guaranteed loan participation certificates [Member]
Amortized cost and fair values of securities
Total amortized cost	37	42
Total Fair value	$37	$42

Securities_Unrealized_Losses_D

Securities - Unrealized Losses (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	$14,885
12 Months or More, Fair Value	0
Fair Value, Total	14,885
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	-183
12 Months or More, Unrealized Loss	0
Unrealized Loss, Total	-183
Mortgage Backed Securities Residential [Member]
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	3,004
12 Months or More, Fair Value	0
Fair Value, Total	3,004
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	-111
12 Months or More, Unrealized Loss	0
Unrealized Loss, Total	-111
Collateralized mortgage obligations - residential [Member]
Amortized cost and fair values of securities
Less than 12 Months, Fair Value	11,881	0
12 Months or More, Fair Value	0	1,956
Fair Value, Total	11,881	1,956
Unrealized loss of securities
Less than 12 Months, Unrealized Loss	-72	0
12 Months or More, Unrealized Loss	0	-2
Unrealized Loss, Total	($72)	($2)

Loans_Receivable_Details

Loans Receivable (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Loans receivable
Total loans	$1,050,305		$1,047,755
Net deferred loan origination costs	902		745
Allowance for loan losses	-15,876	-17,097	-18,035	-20,588	-30,878	-31,726
Loans, net	1,035,331		1,030,465
One-to-four family residential real estate loans [Member]
Loans receivable
Total loans	204,205		218,596
Allowance for loan losses	-3,846		-4,726
Multi-family mortgage loans [Member]
Loans receivable
Total loans	375,786		352,019
Allowance for loan losses	-4,875		-4,580
Nonresidential real estate loans [Member]
Loans receivable
Total loans	246,524		264,672
Allowance for loan losses	-4,793		-5,545
Construction and land loans [Member]
Loans receivable
Total loans	6,429		8,552
Allowance for loan losses	-598		-1,031
Commercial loans [Member]
Loans receivable
Total loans	52,978		61,388
Allowance for loan losses	-939		-1,324
Commercial leases [Member]
Loans receivable
Total loans	161,822		139,783
Allowance for loan losses	-728		-666
Consumer loans [Member]
Loans receivable
Total loans	2,561		2,745
Allowance for loan losses	($97)		($163)

Loans_Receivable_Loan_Originat

Loans Receivable - Loan Origination and Risk Management (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$1,050,305	$1,047,755
Multi-family mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	375,786	352,019
Commercial leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, amount	$161,822	$139,783

Loans_Receivable_Allowance_for

Loans Receivable - Allowance for Loan Losses (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	$800		$1,584
Purchased impaired loans	1		110
Collectively evaluated for impairment	15,075		16,341
Allowance for loan losses	15,876	17,097	18,035	20,588	30,878	31,726
Individually evaluated for impairment	23,851		24,441
Purchased impaired loans	2,038		3,989
Collectively evaluated for impairment	1,024,416		1,019,325
Total loans	1,050,305		1,047,755
Net deferred loan origination costs	902		745
Loans, net	1,035,331		1,030,465
One-to-four family residential real estate loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	41		137
Purchased impaired loans	1		5
Collectively evaluated for impairment	3,804		4,584
Allowance for loan losses	3,846		4,726
Individually evaluated for impairment	4,952		5,256
Purchased impaired loans	405		380
Collectively evaluated for impairment	198,848		212,960
Total loans	204,205		218,596
Multi-family mortgage loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	469		729
Purchased impaired loans	0		0
Collectively evaluated for impairment	4,406		3,851
Allowance for loan losses	4,875		4,580
Individually evaluated for impairment	12,248		4,801
Purchased impaired loans	0		0
Collectively evaluated for impairment	363,538		347,218
Total loans	375,786		352,019
Nonresidential real estate loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	224		401
Purchased impaired loans	0		8
Collectively evaluated for impairment	4,569		5,136
Allowance for loan losses	4,793		5,545
Individually evaluated for impairment	5,358		11,918
Purchased impaired loans	1,611		2,568
Collectively evaluated for impairment	239,555		250,186
Total loans	246,524		264,672
Construction and land loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	37		294
Purchased impaired loans	0		96
Collectively evaluated for impairment	561		641
Allowance for loan losses	598		1,031
Individually evaluated for impairment	1,021		2,210
Purchased impaired loans	0		1,021
Collectively evaluated for impairment	5,408		5,321
Total loans	6,429		8,552
Commercial loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	29		23
Purchased impaired loans	0		1
Collectively evaluated for impairment	910		1,300
Allowance for loan losses	939		1,324
Individually evaluated for impairment	272		256
Purchased impaired loans	22		20
Collectively evaluated for impairment	52,684		61,112
Total loans	52,978		61,388
Commercial leases [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0		0
Purchased impaired loans	0		0
Collectively evaluated for impairment	728		666
Allowance for loan losses	728		666
Individually evaluated for impairment	0		0
Purchased impaired loans	0		0
Collectively evaluated for impairment	161,822		139,783
Total loans	161,822		139,783
Consumer loans [Member]
Allowance for loan losses and the loans receivable by portfolio segment
Individually evaluated for impairment	0		0
Purchased impaired loans	0		0
Collectively evaluated for impairment	97		163
Allowance for loan losses	97		163
Individually evaluated for impairment	0		0
Purchased impaired loans	0		0
Collectively evaluated for impairment	2,561		2,745
Total loans	$2,561		$2,745

Loans_Receivable_Activity_in_t

Loans Receivable - Activity in the Allowance for Loan Losses (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$17,097	$30,878	$18,035	$31,726
Loans charged off	1,753	15,221	4,311	20,232
Recoveries	969	478	1,661	1,900
Net charge-off	784	14,743	2,650	18,332
Provision for loan losses	-437	4,453	491	7,194
Ending balance	15,876	20,588	15,876	20,588
One-to-four family residential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			4,726
Loans charged off	-528	-3,145	-1,073	-4,408
Recoveries	108	7	435	192
Ending balance	3,846		3,846
Multi-family mortgage loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			4,580
Loans charged off	-902	-2,159	-1,512	-2,848
Recoveries	3	11	219	491
Ending balance	4,875		4,875
Nonresidential real estate loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			5,545
Loans charged off	-138	-5,435	-370	-8,070
Recoveries	329	7	451	322
Ending balance	4,793		4,793
Construction and land loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,031
Loans charged off	-16	-806	-943	-1,038
Recoveries	193	6	196	248
Ending balance	598		598
Commercial loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			1,324
Loans charged off	-131	-3,536	-363	-3,705
Recoveries	335	421	356	610
Ending balance	939		939
Commercial leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			666
Loans charged off		-68	0	68
Ending balance	728		728
Consumer loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			163
Loans charged off	-38	-72	-50	-95
Recoveries	1	26	4	37
Ending balance	$97		$97

Loans_Receivable_Loans_Individ

Loans Receivable - Loans Individually Evaluated for Impairment (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Loans individually evaluated for impairment by class loans
Loan Balance	$19,181	$19,181	$21,155
Recorded Investment	16,313	16,313	16,128
Partial Charge-off	2,203	2,203	4,847
Average Investment in Impaired Loans	16,988	15,183	23,251
Interest Income Recognized	33	142	799
Loan Balance (With an allowance recorded)	9,694	9,694	10,831
Recorded Investment (With an allowance recorded)	7,469	7,469	8,107
Partial Charge-offs (With an allowance recorded)	2,094	2,094	2,699
Allowance for loan losses (With an allowance recorded)	800	800	1,584
Average Investment in Impaired Loans (With an allowance recorded)	8,043	8,052	37,222
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	11	117	166
Impaired Loan, Total	28,875	28,875	31,986
Recorded Investment, Total	23,782	23,782	24,235
Partial Charge-offs, Total	4,297	4,297	7,546
Average Investment in Impaired Loans, Total	25,031	23,235	60,473
Interest Income Recognized, Total	44	259	965
One-to-four family residential real estate loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	5,157	5,157	5,250
Recorded Investment	3,903	3,903	4,216
Partial Charge-off	1,219	1,219	1,027
Average Investment in Impaired Loans	3,780	3,774	2,814
Interest Income Recognized	12	38	149
Allowance for loan losses (With an allowance recorded)	41	41	137
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	614	614	567
Recorded Investment	543	543	534
Partial Charge-off	40	40	34
Average Investment in Impaired Loans	688	576	4,322
Interest Income Recognized	0	0	90
Loan Balance (With an allowance recorded)	572	572	626
Recorded Investment (With an allowance recorded)	501	501	499
Partial Charge-offs (With an allowance recorded)	61	61	128
Allowance for loan losses (With an allowance recorded)	41	41	137
Average Investment in Impaired Loans (With an allowance recorded)	470	381	1,996
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	2	13
Multi-family mortgage loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	8,405	8,405	2,959
Recorded Investment	7,464	7,464	2,106
Partial Charge-off	823	823	819
Average Investment in Impaired Loans	7,735	5,903	9,303
Interest Income Recognized	20	82	189
Loan Balance (With an allowance recorded)	4,089	4,089	3,182
Recorded Investment (With an allowance recorded)	2,766	2,766	2,645
Partial Charge-offs (With an allowance recorded)	1,300	1,300	521
Allowance for loan losses (With an allowance recorded)	469	469	729
Average Investment in Impaired Loans (With an allowance recorded)	2,999	2,882	6,562
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	8	88	20
Multi Family Mortgage Loans without wholesale [Member] [Member]
Loans individually evaluated for impairment by class loans
Allowance for loan losses (With an allowance recorded)	373	373
Wholesale commercial lending [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	990	990
Recorded Investment	996	996
Partial Charge-off	0	0
Average Investment in Impaired Loans	996	398
Interest Income Recognized	0	11
Loan Balance (With an allowance recorded)	1,038	1,038
Recorded Investment (With an allowance recorded)	982	982
Partial Charge-offs (With an allowance recorded)	47	47
Allowance for loan losses (With an allowance recorded)	96	96
Average Investment in Impaired Loans (With an allowance recorded)	740	493
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	2	21
Nonresidential real estate loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	3,708	3,708	11,850
Recorded Investment	3,113	3,113	9,220
Partial Charge-off	113	113	2,490
Average Investment in Impaired Loans	3,389	4,212	6,218
Interest Income Recognized	1	11	347
Loan Balance (With an allowance recorded)	2,611	2,611	2,825
Recorded Investment (With an allowance recorded)	2,223	2,223	2,549
Partial Charge-offs (With an allowance recorded)	299	299	266
Allowance for loan losses (With an allowance recorded)	224	224	401
Average Investment in Impaired Loans (With an allowance recorded)	2,494	2,464	21,077
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	1	5	20
Land loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	307	307	0
Recorded Investment	294	294	0
Partial Charge-off	8	8	0
Average Investment in Impaired Loans	230	188	409
Interest Income Recognized	0	0	0
Loan Balance (With an allowance recorded)	922	922	3,812
Recorded Investment (With an allowance recorded)	724	724	2,210
Partial Charge-offs (With an allowance recorded)	197	197	1,602
Allowance for loan losses (With an allowance recorded)	37	37	294
Average Investment in Impaired Loans (With an allowance recorded)	1,117	1,488	2,933
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	0	113
Commercial loans - secured [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	0	0	0
Recorded Investment	0	0	0
Partial Charge-off	0	0	0
Average Investment in Impaired Loans	131	85	137
Interest Income Recognized	0	0	0
Loan Balance (With an allowance recorded)	462	462	386
Recorded Investment (With an allowance recorded)	273	273	204
Partial Charge-offs (With an allowance recorded)	190	190	182
Allowance for loan losses (With an allowance recorded)	29	29	23
Average Investment in Impaired Loans (With an allowance recorded)	223	344	1,849
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method	0	1	0
Commercial loans - unsecured [Member]
Loans individually evaluated for impairment by class loans
Loan Balance	0	0
Recorded Investment	0	0
Partial Charge-off	0	0
Average Investment in Impaired Loans	39	47
Interest Income Recognized	0	0
Loan Balance (With an allowance recorded)			0
Recorded Investment (With an allowance recorded)			0
Partial Charge-offs (With an allowance recorded)			0
Allowance for loan losses (With an allowance recorded)			0
Average Investment in Impaired Loans (With an allowance recorded)			267
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			0
Commercial loans - other [Member]
Loans individually evaluated for impairment by class loans
Loan Balance			529
Recorded Investment			52
Partial Charge-off			477
Average Investment in Impaired Loans			25
Interest Income Recognized			21
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Loans individually evaluated for impairment by class loans
Loan Balance (With an allowance recorded)			0
Recorded Investment (With an allowance recorded)			0
Partial Charge-offs (With an allowance recorded)			0
Allowance for loan losses (With an allowance recorded)			0
Average Investment in Impaired Loans (With an allowance recorded)			2,500
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			0
Non-rated commercial leases [Member]
Loans individually evaluated for impairment by class loans
Loan Balance			0
Recorded Investment			0
Partial Charge-off			0
Average Investment in Impaired Loans			23
Interest Income Recognized			3
Loan Balance (With an allowance recorded)			0
Recorded Investment (With an allowance recorded)			0
Partial Charge-offs (With an allowance recorded)			0
Allowance for loan losses (With an allowance recorded)			0
Average Investment in Impaired Loans (With an allowance recorded)			36
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			0
Consumer loans [Member]
Loans individually evaluated for impairment by class loans
Loan Balance (With an allowance recorded)			0
Recorded Investment (With an allowance recorded)			0
Partial Charge-offs (With an allowance recorded)			0
Allowance for loan losses (With an allowance recorded)	0	0	0
Average Investment in Impaired Loans (With an allowance recorded)			2
Impaired Financing Receivable, with Related Allowance, Interest Income, Cash Basis Method			$0

Loans_Receivable_Carrying_Amou

Loans Receivable - Carrying Amount (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Allowance For Loan Losses For Purchased Impaired Loans	$51	$5	$109	$219,000
Carrying amount of purchased impaired loans
Purchased impaired loans	2,038		2,038		3,989
Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	1		1		110
Financing Receivable, Acquired with Deteriorated Credit Quality, net of allowance	2,037		2,037		3,879
One-to-four family residential real estate loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	405		405		380
Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	1		1		5
Multi-family mortgage loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	0		0		0
Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	0		0		0
Nonresidential real estate loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	1,611		1,611		2,568
Carrying amount, net of allowance ($1 at September 30, 2013, $110 at December 31, 2012)	0		0		8
Land loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	0		0		1,021
Commercial loans [Member]
Carrying amount of purchased impaired loans
Purchased impaired loans	$22		$22		$20

Loans_Receivable_Accretable_Yi

Loans Receivable - Accretable Yield (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accretable yield, or income expected to be collected, related to purchased impaired loans
Beginning balance	$100	$832	$196	$2,270
New loans purchased	0	0	0	0
Disposals	0	249	0	771
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	-2		1
Accretion of income	48	179	147	1,095
Ending balance	$50	$404	$50	$404

Loans_Receivable_Contractually

Loans Receivable - Contractually Required Payments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Purchased impaired loans at the date of acquisition
Contractually required payments receivable of loans purchased, Total	$3,364	$7,224
One-to-four family residential real estate loans [Member]
Purchased impaired loans at the date of acquisition
Contractually required payments receivable of loans purchased, Total	1,143	1,143
Nonresidential real estate loans [Member]
Purchased impaired loans at the date of acquisition
Contractually required payments receivable of loans purchased, Total	1,999	3,884
Land loans [Member]
Purchased impaired loans at the date of acquisition
Contractually required payments receivable of loans purchased, Total	0	1,600
Commercial loans [Member]
Purchased impaired loans at the date of acquisition
Contractually required payments receivable of loans purchased, Total	$222	$597

Loans_Receivable_Nonaccrual_Lo

Loans Receivable - Nonaccrual Loans (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Reserve For Uncollected Loan Interest	$1,332	$900
Unpaid Principal Balance	30,009	30,956
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	23,938	22,267
Loans Past Due Over 90 Days, still accruing	965	329
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	5,428	7,286
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	4,168	6,154
Loans Past Due Over 90 Days, still accruing	0	70
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	1,372	1,420
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	1,230	1,145
Loans Past Due Over 90 Days, still accruing	89	0
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	12,196	5,246
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	9,935	3,517
Loans Past Due Over 90 Days, still accruing	235	242
Wholesale Commercial Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	2,029
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	1,978
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	7,292	12,249
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	5,335	8,985
Loans Past Due Over 90 Days, still accruing	431	0
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	1,229	3,817
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	1,018	2,210
Loans Past Due Over 90 Days, still accruing	119	0
Commercial loans - secured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	461	386
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	272	204
Loans Past Due Over 90 Days, still accruing	5	0
Commercial loans - unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	0	552
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	0	52
Loans Past Due Over 90 Days, still accruing	86	17
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Unpaid Principal Balance	2
Recorded investment in nonaccrual and loans past due over 90 days
Recorded Investment	2
Loans Past Due Over 90 Days, still accruing	$0

Loans_Receivable_Past_Due_Loan

Loans Receivable - Past Due Loans (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	$3,965	[1]	$11,633	[2]
Recorded Investment, 60 to 89 Days Past Due	2,422	[1]	6,105	[2]
Recorded Investment, 90 Days or Greater Past Due	22,240		14,288
Recorded Investment, Total Past Due	28,627		32,026
Recorded investment, loans not past due	1,018,279		1,005,827
Recorded investment, total	1,046,906		1,037,853
One-to-four family residential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	1,034		1,584
Recorded Investment, 60 to 89 Days Past Due	212		778
Recorded Investment, 90 Days or Greater Past Due	3,205		4,463
Recorded Investment, Total Past Due	4,451		6,825
Recorded investment, loans not past due	143,459		153,279
Recorded investment, total	147,910		160,104
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	85		855
Recorded Investment, 60 to 89 Days Past Due	172		579
Recorded Investment, 90 Days or Greater Past Due	1,015		249
Recorded Investment, Total Past Due	1,272		1,683
Recorded investment, loans not past due	54,770		55,906
Recorded investment, total	56,042		57,589
Multi-family mortgage loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	0		5,393
Recorded Investment, 60 to 89 Days Past Due	1,621		3,049
Recorded Investment, 90 Days or Greater Past Due	9,364		3,218
Recorded Investment, Total Past Due	10,985		11,660
Recorded investment, loans not past due	292,774		291,103
Recorded investment, total	303,759		302,763
Wholesale commercial lending [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	0		1,481
Recorded Investment, 60 to 89 Days Past Due	0		0
Recorded Investment, 90 Days or Greater Past Due	1,643		0
Recorded Investment, Total Past Due	1,643		1,481
Recorded investment, loans not past due	68,798		44,342
Recorded investment, total	70,441		45,823
Nonresidential real estate loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	2,759		863
Recorded Investment, 60 to 89 Days Past Due	400		398
Recorded Investment, 90 Days or Greater Past Due	5,513		5,508
Recorded Investment, Total Past Due	8,672		6,769
Recorded investment, loans not past due	235,174		252,368
Recorded investment, total	243,846		259,137
Construction loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded investment, loans not past due	1,390
Recorded investment, total	1,390
Land loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	0		702
Recorded Investment, 60 to 89 Days Past Due	0		1,220
Recorded Investment, 90 Days or Greater Past Due	1,137		630
Recorded Investment, Total Past Due	1,137		2,552
Recorded investment, loans not past due	3,898		4,956
Recorded investment, total	5,035		7,508
Commercial loans - Secured [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	84		659
Recorded Investment, 60 to 89 Days Past Due	17		3
Recorded Investment, 90 Days or Greater Past Due	277		204
Recorded Investment, Total Past Due	378		866
Recorded investment, loans not past due	17,821		22,336
Recorded investment, total	18,199		23,202
Commercial loans - Unsecured [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	0		81
Recorded Investment, 60 to 89 Days Past Due	0		78
Recorded Investment, 90 Days or Greater Past Due	84		16
Recorded Investment, Total Past Due	84		175
Recorded investment, loans not past due	3,480		5,774
Recorded investment, total	3,564		5,949
Commercial Loans - Municipal loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	4,222		4,752
Recorded investment, total	4,222		4,752
Commercial Loans - Warehouse Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	3,767		2,989
Recorded investment, total	3,767		2,989
Commercial Loans - Health Care [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	17,176		17,601
Recorded investment, total	17,176		17,601
Commercial loans - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	6,198		6,977
Recorded investment, total	6,198		6,977
Commercial Leases - Investment rated commercial leases [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	122,138		102,724
Recorded investment, total	122,138		102,724
Commercial Leases - Below Investment Grade [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	8,809		9,294
Recorded investment, total	8,809		9,294
Commercial Leases - Non Rated [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	28,905		25,657
Recorded investment, total	28,905		25,657
Commercial Leases - Lease Pools [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
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	2,934		3,028
Recorded investment, total	2,934		3,028
Consumer loans [Member]
Financing Receivable, Recorded Investment, Past Due [Abstract]
Recorded Investment, 30 to 59 Days Past Due	3		15
Recorded Investment, 60 to 89 Days Past Due	0		0
Recorded Investment, 90 Days or Greater Past Due	2		0
Recorded Investment, Total Past Due	5		15
Recorded investment, loans not past due	2,566		2,741
Recorded investment, total	$2,571		$2,756
[1]
[2]	30-59B DaysPast DueB 60-89B DaysPast DueB 90 Days orGreaterPast DueB TotalB PastDueB LoansB NotPast DueB TotalPurchased impaired loans One-to-four family residential real estate loans - non-owner occupied$327B $bB $53B $380$bB $380Nonresidential real estate loansbB bB 1,125B 1,1251,443B 2,568Land loansbB bB 1,021B 1,021bB 1,021Commercial loans b securedbB bB 20B 20bB 20B $327B $bB $2,219B $2,546B $1,443B $3,989

Loans_Receivable_Aging_of_Reco

Loans Receivable - Aging of Recorded Investments (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	$3,965	[1]	$11,633	[2]
Recorded Investment, 60 to 89 Days Past Due	2,422	[1]	6,105	[2]
Recorded Investment, 90 Days or Greater Past Due	22,240		14,288
Recorded Investment, Total Past Due	28,627		32,026
Recorded Investment, Loans Not Past Due	1,018,279		1,005,827
Recorded Investment, Total	2,038		3,989
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	85		855
Recorded Investment, 60 to 89 Days Past Due	172		579
Recorded Investment, 90 Days or Greater Past Due	1,015		249
Recorded Investment, Total Past Due	1,272		1,683
Recorded Investment, Loans Not Past Due	54,770		55,906
Multi-family mortgage loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	0		5,393
Recorded Investment, 60 to 89 Days Past Due	1,621		3,049
Recorded Investment, 90 Days or Greater Past Due	9,364		3,218
Recorded Investment, Total Past Due	10,985		11,660
Recorded Investment, Loans Not Past Due	292,774		291,103
Recorded Investment, Total	0		0
Construction loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, Loans Not Past Due	1,390
Land loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	0		702
Recorded Investment, 60 to 89 Days Past Due	0		1,220
Recorded Investment, 90 Days or Greater Past Due	1,137		630
Recorded Investment, Total Past Due	1,137		2,552
Recorded Investment, Loans Not Past Due	3,898		4,956
Recorded Investment, Total	0		1,021
Commercial loans - Secured [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	84		659
Recorded Investment, 60 to 89 Days Past Due	17		3
Recorded Investment, 90 Days or Greater Past Due	277		204
Recorded Investment, Total Past Due	378		866
Recorded Investment, Loans Not Past Due	17,821		22,336
Commercial loans - Unsecured [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	0		81
Recorded Investment, 60 to 89 Days Past Due	0		78
Recorded Investment, 90 Days or Greater Past Due	84		16
Recorded Investment, Total Past Due	84		175
Recorded Investment, Loans Not Past Due	3,480		5,774
Purchased Impaired Loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	0		327
Recorded Investment, 60 to 89 Days Past Due	0		0
Recorded Investment, 90 Days or Greater Past Due	590		2,219
Recorded Investment, Total Past Due	590		2,546
Recorded Investment, Loans Not Past Due	1,446		1,443
Recorded Investment, Total	2,036		3,989
Purchased Impaired Loans [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due	0		327
Recorded Investment, 60 to 89 Days Past Due	0		0
Recorded Investment, 90 Days or Greater Past Due	405		53
Recorded Investment, Total Past Due	405		380
Recorded Investment, Loans Not Past Due	0		0
Recorded Investment, Total	405		380
Purchased Impaired Loans [Member] | Nonresidential real estate loans [Member]
Recorded investment in past due purchased impaired loans
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	163		1,125
Recorded Investment, Total Past Due	163		1,125
Recorded Investment, Loans Not Past Due	1,446		1,443
Recorded Investment, Total	1,609		2,568
Purchased Impaired Loans [Member] | Land loans [Member]
Recorded investment in past due purchased impaired loans
Recorded Investment, 30 to 59 Days Past Due			0
Recorded Investment, 60 to 89 Days Past Due			0
Recorded Investment, 90 Days or Greater Past Due			1,021
Recorded Investment, Total Past Due			1,021
Recorded Investment, Loans Not Past Due			0
Recorded Investment, Total			1,021
Purchased Impaired Loans [Member] | Commercial loans - Secured [Member]
Recorded investment in past due purchased impaired loans
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	22		20
Recorded Investment, Total Past Due	22		20
Recorded Investment, Loans Not Past Due	0		0
Recorded Investment, Total	$22		$20
[1]
[2]	30-59B DaysPast DueB 60-89B DaysPast DueB 90 Days orGreaterPast DueB TotalB PastDueB LoansB NotPast DueB TotalPurchased impaired loans One-to-four family residential real estate loans - non-owner occupied$327B $bB $53B $380$bB $380Nonresidential real estate loansbB bB 1,125B 1,1251,443B 2,568Land loansbB bB 1,021B 1,021bB 1,021Commercial loans b securedbB bB 20B 20bB 20B $327B $bB $2,219B $2,546B $1,443B $3,989

Loans_Receivable_Troubled_Debt

Loans Receivable - Troubled Debt Restructuring (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings			$0	$0
Troubled Debt Restructurings
Financing receivable modifications	5,275,000		5,275,000		11,167,000
Troubled Debt Restructurings Value Of Decreased Interest Income	0	0
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0		198,000
Troubled Debt Restructuring Charge Off	0	0		500,000
Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	4,209,000		4,209,000		9,192,000
Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	1,066,000		1,066,000		1,975,000
One-to-four family residential real estate loans - non-owner occupied loans [Member] | Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	3,040,000		3,040,000		2,802,000
One-to-four family residential real estate loans - non-owner occupied loans [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	617,000		617,000		767,000
Multi-family mortgage loans [Member] | Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	1,169,000		1,169,000		1,201,000
Multi-family mortgage loans [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	449,000		449,000		938,000
Nonresidential real estate [Member] | Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	0		0		5,189,000
Nonresidential real estate [Member] | Non Accrual Loans [Member]
Troubled Debt Restructurings
Financing receivable modifications	$0		$0		$270,000

Loans_Receivable_Modified_Trou

Loans Receivable - Modified Troubled Debt Restructuring (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
				loan
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings Value Of Decreased Interest Income	$0	$0
Loans modified	1,100,000	300,000	1,100,000	300,000
Loans by class modified as TDRs
Number of Loans			0	25
Pre-Modification outstanding recorded investment			950,000	2,800,000
Post-Modification outstanding recorded investment			950,000	2,600,000
Due to reduction in interest rate			0	504,000
Due to extension of maturity date			950,000	1,596,000
Due to permanent reduction in recorded investment			0	500,000
Total			950,000	2,600,000
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0		198,000
Troubled Debt Restructuring Charge Off	0	0		500,000
One-to-four family residential real estate loans [Member]
Loans by class modified as TDRs
Number of Loans	0	17	3	24
Pre-Modification outstanding recorded investment	0	1,441,000	950,000	2,100,000
Post-Modification outstanding recorded investment	0	1,441,000	950,000	2,100,000
Due to reduction in interest rate		0	0	504,000
Due to extension of maturity date		1,441,000	950,000	1,596,000
Due to permanent reduction in recorded investment				0
Total		1,441,000	950,000	2,100,000
Multi-family mortgage loans [Member]
Loans by class modified as TDRs
Number of Loans			0	1
Pre-Modification outstanding recorded investment			0	700,000
Post-Modification outstanding recorded investment			0	500,000
Due to reduction in interest rate				0
Due to extension of maturity date				0
Due to permanent reduction in recorded investment				500,000
Total				$500,000

Loans_Receivable_Troubled_Debt1

Loans Receivable - Troubled Debt Restructuring - Payment Defaults (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	loan	loan	loan	loan
Financing Receivable, Modifications [Line Items]
Financing Receivable Pre Modification Recorded Investment			$950,000	$2,800,000
Financing Receivable, Modifications, Subsequent Default, Increase In Allowance For Loan And Leases Losses				1,100,000
Loans by class modified as TDRs with payment default
Number of loans			0	9
Recorded investment			0	4,172,000
Financing Receivable Post Modification Recorded Investment			950,000	2,600,000
Number Of Loans			0	25
One-to-four family residential real estate loans [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Pre Modification Recorded Investment	0	1,441,000	950,000	2,100,000
Loans by class modified as TDRs with payment default
Number of loans			0	5
Recorded investment			0	864,000
Financing Receivable Post Modification Recorded Investment	0	1,441,000	950,000	2,100,000
Number Of Loans	0	17	3	24
Multi Family Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable Pre Modification Recorded Investment			0	700,000
Loans by class modified as TDRs with payment default
Financing Receivable Post Modification Recorded Investment			0	500,000
Number Of Loans			0	1
Nonresidential real estate loans [Member]
Loans by class modified as TDRs with payment default
Number of loans			0	4
Recorded investment			$0	$3,308,000

Loans_Receivable_Credit_Qualit

Loans Receivable - Credit Quality Indicators (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable Credit Quality Indicators
Total loans	$1,050,305	$1,047,755
One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	204,205	218,596
Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	375,786	352,019
Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,561	2,745
Pass [Member]
Financing Receivable Credit Quality Indicators
Total loans	977,170	924,953
Pass [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	143,054	152,711
Pass [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	54,206	51,849
Pass [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	281,964	275,338
Pass [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	64,659	44,074
Pass [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	213,221	199,802
Pass [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,388	0
Pass [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,958	2,769
Pass [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	17,761	19,579
Pass [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,305	4,061
Pass [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	4,192	4,751
Pass [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,747	2,971
Pass [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	17,159	17,566
Pass [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	6,175	6,957
Pass [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	121,439	102,101
Pass [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	8,739	9,205
Pass [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	28,722	25,466
Pass [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,922	3,011
Pass [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,559	2,742
Special Mention [Member]
Financing Receivable Credit Quality Indicators
Total loans	21,695	41,422
Special Mention [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	325	0
Special Mention [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	1,486
Special Mention [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	7,472	6,139
Special Mention [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,706	0
Special Mention [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,908	30,898
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	158
Special Mention [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	2,418
Special Mention [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	284	323
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
Substandard [Member]
Financing Receivable Credit Quality Indicators
Total loans	26,175	55,004
Substandard [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	969	1,428
Substandard [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	628	3,440
Substandard [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5,262	21,128
Substandard [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,766	1,781
Substandard [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	15,427	22,345
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	1,062	2,394
Substandard [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	97	988
Substandard [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	964	1,497
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	3
Nonaccrual [Member]
Financing Receivable Credit Quality Indicators
Total loans	25,265	26,376
Nonaccrual [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,386	6,158
Nonaccrual [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,637	1,524
Nonaccrual [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,310	3,559
Nonaccrual [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,647	0
Nonaccrual [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	6,968	11,627
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	1,021	3,231
Nonaccrual [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	294	225
Nonaccrual [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	52
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	2	0
Consumer Credit Score [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,050,305	1,047,755
Consumer Credit Score [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	147,734	160,297
Consumer Credit Score [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	56,471	58,299
Consumer Credit Score [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	305,008	306,164
Consumer Credit Score [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	70,778	45,855
Consumer Credit Score [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	246,524	264,672
Consumer Credit Score [Member] | Construction loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,388	0
Consumer Credit Score [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5,041	8,552
Consumer Credit Score [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	18,152	23,210
Consumer Credit Score [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,553	5,933
Consumer Credit Score [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	4,192	4,751
Consumer Credit Score [Member] | Commercial Loans - Warehouse Lines [Member]
Financing Receivable Credit Quality Indicators
Total loans	3,747	2,971
Consumer Credit Score [Member] | Commercial Loans - Health Care [Member]
Financing Receivable Credit Quality Indicators
Total loans	17,159	17,566
Consumer Credit Score [Member] | Commercial loans - other [Member]
Financing Receivable Credit Quality Indicators
Total loans	6,175	6,957
Consumer Credit Score [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	121,439	102,101
Consumer Credit Score [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	8,739	9,205
Consumer Credit Score [Member] | Commercial Leases - Non Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	28,722	25,466
Consumer Credit Score [Member] | Commercial Leases - Lease Pools [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,922	3,011
Consumer Credit Score [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	$2,561	$2,745

Loans_Receivable_Narrative_Det

Loans Receivable - Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance For Loan Losses For Purchased Impaired Loans	$51,000	$5,000	$109,000	$219,000,000
Cash flows expected to be collected at acquisition, subject to adjustment with final purchase price adjustment	18,800,000		18,800,000
Fair value of purchased impaired loans at acquisition	15,400,000		15,400,000
Reserve For Uncollected Loan Interest	1,332,000		1,332,000		900,000
Financing receivable modifications	5,275,000		5,275,000		11,167,000
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings			0	0
Troubled Debt Restructurings Value Of Decreased Interest Income	0	0
Financing Receivable, Modifications, Increase In Allowance For Loan And Leases Losses	0	0		198,000
Increased value of allowances for loan losses				1,100,000
Charges regarding TDRs	0	0		500,000
Loans modified	1,100,000	300,000	1,100,000	300,000
Allowance for Loan and Lease Losses [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$94,000		$94,000		$318,000

Fair_Value_Financial_Assets_Ac

Fair Value - Financial Assets Accounted for at Fair Value (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Company's financial instruments measured at fair values
Total Fair value	$83,409	$77,832
Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	34,533	33,456
SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	37	42
Nonrecurring [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	83,409	77,832
Nonrecurring [Member] | Certificates of deposit [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	34,533	33,456
Nonrecurring [Member] | Municipal securities [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	359	369
Nonrecurring [Member] | Equity mutual fund [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	505	528
Nonrecurring [Member] | Mortgage-backed securities - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	30,026	34,233
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	17,949	9,204
Nonrecurring [Member] | SBA-guaranteed loan participation certificates [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	37	42
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Schedule of Company's financial instruments measured at fair values
Total Fair value	505	528
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] | Municipal securities [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]
Schedule of Company's financial instruments measured at fair values
Total Fair value	82,904	77,304
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]
Schedule of Company's financial instruments measured at fair values
Total Fair value	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] | Municipal securities [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

Fair_Value_Assets_Measured_at_

Fair Value - Assets Measured at Fair Value on a Non-Recurring Basis (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	$6,721
Fair Value, Other real estate owned	4,168
One-to-four family residential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	512
Fair Value, Other real estate owned	713
Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	3,279
Nonresidential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	1,999
Fair Value, Other real estate owned	946
Construction and land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	687
Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	244
Land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned	2,509
Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	6,721	8,450
Fair Value, Other real estate owned	4,168	9,368
Mortgage servicing rights	185	208
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	512	410
Fair Value, Other real estate owned	713	1,503
Nonrecurring [Member] | Multi-family mortgage loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	3,279	1,916
Fair Value, Other real estate owned		720
Nonrecurring [Member] | Nonresidential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	1,999	3,102
Fair Value, Other real estate owned	946	3,649
Nonrecurring [Member] | Construction and land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	687	2,841
Nonrecurring [Member] | Commercial loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	244	181
Nonrecurring [Member] | Land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned	2,509	3,496
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	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
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Nonresidential real estate 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] | Construction and land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	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	0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned	0	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	0	0
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	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
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Nonresidential real estate 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] | Construction and land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	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	0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	6,721	8,450
Fair Value, Other real estate owned	4,168	9,368
Mortgage servicing rights	185	208
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, Impaired loans	512	410
Fair Value, Other real estate owned	713	1,503
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	3,279	1,916
Fair Value, Other real estate owned		720
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Nonresidential real estate loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	1,999	3,102
Fair Value, Other real estate owned	946	3,649
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Construction and land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Impaired loans	687	2,841
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	244	181
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Land loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, Other real estate owned	$2,509	$3,496

Fair_Value_Level_3_Fair_Value_

Fair Value - Level 3 Fair Value Measurements for Financial Instruments on a Non-recurring Basis (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Statement [Line Items]
Fair Value, Impaired loans	6,721
Fair Value, Other real estate owned	4,168
One to Four Family Residential Real Estate Loans [Member]
Statement [Line Items]
Fair Value, Impaired loans	512
Fair Value, Other real estate owned	713
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	SalesB comparison
Unobservable Input(s)	Discount applied to valuation
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	98.00%
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	34.00%
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	6.00%
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	7.00%
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	69.00%
One to Four Family Residential Real Estate Loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	18.00%
Multi-family mortgage loans [Member]
Statement [Line Items]
Fair Value, Impaired loans	3,279
Multi-family mortgage loans [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	Sales comparison
Unobservable Input(s)	Comparison between sales and income approaches
Multi-family mortgage loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	98.00%
Multi-family mortgage loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	9.00%
Multi-family mortgage loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	46.00%
Multi-family mortgage loans [Member] | Income approach [Member]
Statement [Line Items]
Valuation Technique(s)	Income approach
Unobservable Input(s)	Cap Rate
Multi-family mortgage loans [Member] | Income approach [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	12.00%
Multi-family mortgage loans [Member] | Income approach [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	6.70%
Multi-family mortgage loans [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	7.64%
Nonresidential real estate loans [Member]
Statement [Line Items]
Fair Value, Impaired loans	1,999
Fair Value, Other real estate owned	946
Nonresidential real estate loans [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	Sales comparison
Unobservable Input(s)	Comparison between sales and income approaches
Nonresidential real estate loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	99.00%
Nonresidential real estate loans [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	29.00%
Nonresidential real estate loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	3.00%
Nonresidential real estate loans [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	7.00%
Nonresidential real estate loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	57.00%
Nonresidential real estate loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Comparability Adjustments	16.00%
Nonresidential real estate loans [Member] | Income approach [Member]
Statement [Line Items]
Valuation Technique(s)	Income approach
Unobservable Input(s)	Cap Rate
Nonresidential real estate loans [Member] | Income approach [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	9.25%
Nonresidential real estate loans [Member] | Income approach [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	9.25%
Nonresidential real estate loans [Member] | Income approach [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Cap Rate	9.25%
Construction and land loans [Member]
Statement [Line Items]
Fair Value, Impaired loans	687
Construction and land loans [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	Sales comparison
Unobservable Input(s)	Discount applied to valuation
Construction and land loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	93.00%
Construction and land loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	10.00%
Construction and land loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	59.00%
Commercial loans [Member]
Statement [Line Items]
Fair Value, Impaired loans	244
Commercial loans [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	Sales comparison
Unobservable Input(s)	Discount applied to valuation
Commercial loans [Member] | Sales comparison [Member] | Maximum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	91.00%
Commercial loans [Member] | Sales comparison [Member] | Minimum [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	10.00%
Commercial loans [Member] | Sales comparison [Member] | Weighted Average [Member] | Impaired Loans [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	75.00%
Land [Member]
Statement [Line Items]
Fair Value, Other real estate owned	2,509
Land [Member] | Sales comparison [Member]
Statement [Line Items]
Valuation Technique(s)	Sales comparison
Unobservable Input(s)	Discount applied to valuation
Land [Member] | Sales comparison [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	7.00%
Land [Member] | Sales comparison [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	7.00%
Land [Member] | Sales comparison [Member] | Weighted Average [Member] | Other Real Estate Owned [Member]
Statement [Line Items]
Fair Value Inputs, Discount Rate	7.00%
Mortgage servicing rights [Member] | Third party valuation [Member]
Statement [Line Items]
Valuation Technique(s)	Third party valuation
Unobservable Input(s)	Present value of future servicing income based on prepayment speeds
Present value of future servicing income based on default rates	Present value of future servicing income based on default rates
Mortgage servicing rights [Member] | Third party valuation [Member] | Maximum [Member]
Statement [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	22.90%
Mortgage servicing rights [Member] | Third party valuation [Member] | Minimum [Member]
Statement [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	11.50%
Mortgage servicing rights [Member] | Third party valuation [Member] | Weighted Average [Member]
Statement [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	15.34%
Fair Value Inputs, Probability of Default	12.00%

Fair_Value_Carrying_Amount_and

Fair Value - Carrying Amount and Estimated Fair Value of Finanical Instruments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	$243,478	$275,764	$236,729	$120,704
Financial assets
Securities, carrying amount	83,409	77,832
Loans held-for-sale, carrying amount	15	2,166
Loans receivable, net of allowance for loan losses, carrying amounts	1,035,331	1,030,465
FHLBC stock, carrying amount	6,068	8,412
Accrued interest receivable, carrying amount	3,576	4,146
Estimate of Fair Value, Fair Value Disclosure [Member]
Financial assets
Available-for-sale Securities, Fair Value Disclosure	83,409	77,832
Loans Held-for-sale, Fair Value Disclosure	15	2,166
Loans Receivable, Fair Value Disclosure	999,660	1,026,087
Accounts Receivable, Fair Value Disclosure	3,576	4,146
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	243,478	275,764
Demand Deposit Accounts Fair Value Disclosure	-133,094	134,597
Deposits Savings Deposits Fair Value Disclosure	-146,685	144,726
Now Money Market Accounts Fair Value Disclosure	-690,797	697,775
Certificates Of Deposit Fair Value Disclosure	-279,812	306,859
Short Term Borrowings Fair Value Disclosure	-2,896	5,608
Accrued Liabilities, Fair Value Disclosure	-119	157
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member]
Financial assets
Loans Held-for-sale, Fair Value Disclosure		0
Loans Receivable, Fair Value Disclosure		0
Accounts Receivable, Fair Value Disclosure		0
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	18,068	20,361
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	82,904	77,304
Loans Held-for-sale, Fair Value Disclosure	15	2,166
Loans Receivable, Fair Value Disclosure	992,939	1,017,637
Accounts Receivable, Fair Value Disclosure	3,576	4,146
Financial liabilities
Cash and Cash Equivalents, Fair Value Disclosure	225,410	255,403
Demand Deposit Accounts Fair Value Disclosure	-133,094	-134,597
Deposits Savings Deposits Fair Value Disclosure	-146,685	-144,726
Now Money Market Accounts Fair Value Disclosure	-690,797	-697,775
Certificates Of Deposit Fair Value Disclosure	-279,812	-306,859
Short Term Borrowings Fair Value Disclosure	-2,896	-5,608
Accrued Liabilities, Fair Value Disclosure	-119	-157
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 3 [Member]
Financial assets
Loans Receivable, Fair Value Disclosure	6,721	8,450
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Cash and Cash Equivalents, at Carrying Value	243,478	275,764
Financial assets
Securities, carrying amount	83,409	77,832
Loans held-for-sale, carrying amount	15	2,166
Loans receivable, net of allowance for loan losses, carrying amounts	1,035,331	1,030,465
FHLBC stock, carrying amount	6,068	8,412
Accrued interest receivable, carrying amount	3,576	4,146
Financial liabilities
Demand Deposit Accounts	133,094	-134,597
Deposits, Savings Deposits	146,685	-144,726
Now Money Market Accounts	690,797	-697,775
Certificates of Deposit, at Carrying Value	279,257	-305,253
Short-term Debt	2,883	-5,567
Accrued Interest Payable	119	-157
Equity Funds [Member]
Financial assets
Securities, carrying amount	$505	$528

Fair_Value_Narratives_Details

Fair Value Narratives (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Impaired Loans Carrying Amount	$7,500,000	$7,500,000	$10,000,000	$10,100,000
Impaired Loans Valuation Allowance	800,000	800,000	1,200,000	1,700,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	($448,000)	($893,000)