Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				$ 7,233			$ 10,989	$ 7,233	$ 10,989	$ 19,821
Allowance for Loan and Lease Losses, Write-offs								1,286	4,540	5,903
Financing Receivable, Allowance for Credit Losses, Recovery								1,540	1,210	398
Provision for loan losses	$ 365	$ 1,151	$ 713	780	$ (300)	$ 505	(831)	(3,010)	(426)	(3,327)
Allowance for loan losses	4,477				7,233			4,477	7,233	10,989
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,921				5,602			3,921	5,602
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	556				1,631			556	1,631	2,311
Loans and Leases Receivable, Net of Deferred Income	483,193				389,956			483,193	389,956
Financing Receivable, Collectively Evaluated for Impairment	466,681				367,454			466,681	367,454
Financing Receivable, Individually Evaluated for Impairment	16,512				22,502			16,512	22,502	31,022
One- to four family loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				3,377			3,496	3,377	3,496
Allowance for Loan and Lease Losses, Write-offs								687	2,887
Financing Receivable, Allowance for Credit Losses, Recovery								380	534
Provision for loan losses								(1,081)	2,234
Allowance for loan losses	1,989				3,377			1,989	3,377	3,496
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,702				2,857			1,702	2,857
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	287				520			287	520
Loans and Leases Receivable, Net of Deferred Income	126,527				112,191			126,527	112,191
Financing Receivable, Collectively Evaluated for Impairment	119,480				105,719			119,480	105,719
Financing Receivable, Individually Evaluated for Impairment	7,047				6,472			7,047	6,472
Multifamily Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				308			408	308	408
Allowance for Loan and Lease Losses, Write-offs								0	98
Financing Receivable, Allowance for Credit Losses, Recovery								83	31
Provision for loan losses								143	(33)
Allowance for loan losses	534				308			534	308	408
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	353				216			353	216
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	181				92			181	92
Loans and Leases Receivable, Net of Deferred Income	94,706				47,525			94,706	47,525
Financing Receivable, Collectively Evaluated for Impairment	93,218				45,285			93,218	45,285
Financing Receivable, Individually Evaluated for Impairment	1,488				2,240			1,488	2,240
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				1,835			3,298	1,835	3,298
Allowance for Loan and Lease Losses, Write-offs								0	574
Financing Receivable, Allowance for Credit Losses, Recovery								256	0
Provision for loan losses								(1,062)	(889)
Allowance for loan losses	1,029				1,835			1,029	1,835	3,298
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	953				1,580			953	1,580
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	76				255			76	255
Loans and Leases Receivable, Net of Deferred Income	185,851				198,101			185,851	198,101
Financing Receivable, Collectively Evaluated for Impairment	183,230				189,317			183,230	189,317
Financing Receivable, Individually Evaluated for Impairment	2,621				8,784			2,621	8,784
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				0			0	0	0
Allowance for Loan and Lease Losses, Write-offs								0	0
Financing Receivable, Allowance for Credit Losses, Recovery								0	149
Provision for loan losses								99	(149)
Allowance for loan losses	99				0			99	0	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	99				0			99	0
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0				0			0	0
Loans and Leases Receivable, Net of Deferred Income	5,076				5,070			5,076	5,070
Financing Receivable, Collectively Evaluated for Impairment	5,076				5,070			5,076	5,070
Financing Receivable, Individually Evaluated for Impairment	0				0			0	0
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				1,705			3,759	1,705	3,759
Allowance for Loan and Lease Losses, Write-offs								320	966
Financing Receivable, Allowance for Credit Losses, Recovery								816	486
Provision for loan losses								(1,388)	(1,574)
Allowance for loan losses	813				1,705			813	1,705	3,759
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	801				941			801	941
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	12				764			12	764
Loans and Leases Receivable, Net of Deferred Income	70,599				26,931			70,599	26,931
Financing Receivable, Collectively Evaluated for Impairment	65,243				21,926			65,243	21,926
Financing Receivable, Individually Evaluated for Impairment	5,356				5,005			5,356	5,005
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses				$ 8			$ 28	8	28
Allowance for Loan and Lease Losses, Write-offs								279	15
Financing Receivable, Allowance for Credit Losses, Recovery								5	10
Provision for loan losses								279	(15)
Allowance for loan losses	13				8			13	8	$ 28
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	13				8			13	8
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0				0			0	0
Loans and Leases Receivable, Net of Deferred Income	434				138			434	138
Financing Receivable, Collectively Evaluated for Impairment	434				137			434	137
Financing Receivable, Individually Evaluated for Impairment	$ 0				$ 1			$ 0	$ 1