Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015		Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	$ 5,232				$ 4,428	[1],[2],[3]				$ 5,232	$ 4,428	[1],[2],[3]
Allowance for Loan and Lease Losses, Write-offs										1,422	1,637	[3]
Financing Receivable, Allowance for Credit Losses, Recovery										731	1,541	[3]
Provision for (recovery of) loan losses	89	$ 728	$ 643	$ 34	(64)		$ (1,151)	$ (713)	$ (913)	1,495	(2,842)	[3],[4]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,642				3,823	[5]				4,642	3,823	[5]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	590				605	[5]				590	605	[5]
Loans and Leases Receivable, Net of Deferred Income	589,019				483,762	[2],[3]				589,019	483,762	[2],[3]
Financing Receivable, Collectively Evaluated for Impairment	569,454				467,382	[3]				569,454	467,382	[3]
Financing Receivable, Individually Evaluated for Impairment	19,565				16,380	[3]				19,565	16,380	[3]
One-to-four family [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	1,697				1,970					1,697	1,970
Allowance for Loan and Lease Losses, Write-offs										389	687
Financing Receivable, Allowance for Credit Losses, Recovery										113	380
Provision for (recovery of) loan losses										3	(1,119)
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,602				1,683	[6]				1,602	1,683	[6]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	95				287					95	287
Loans and Leases Receivable, Net of Deferred Income	143,667				127,056	[5]				143,667	127,056	[5]
Financing Receivable, Collectively Evaluated for Impairment	139,031				120,009	[5]				139,031	120,009	[5]
Financing Receivable, Individually Evaluated for Impairment	4,636				7,047					4,636	7,047
Multifamily [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	622				502					622	502
Allowance for Loan and Lease Losses, Write-offs										340	132
Financing Receivable, Allowance for Credit Losses, Recovery										0	82
Provision for (recovery of) loan losses										460	130
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	622				272					622	272
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0				230	[2]				0	230	[2]
Loans and Leases Receivable, Net of Deferred Income	95,648				94,590	[2]				95,648	94,590	[2]
Financing Receivable, Collectively Evaluated for Impairment	93,879				93,234	[2]				93,879	93,234	[2]
Financing Receivable, Individually Evaluated for Impairment	1,769				1,356	[2]				1,769	1,356	[2]
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	1,808				1,029					1,808	1,029
Allowance for Loan and Lease Losses, Write-offs										0	0
Financing Receivable, Allowance for Credit Losses, Recovery										9	256
Provision for (recovery of) loan losses										770	(1,062)
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,787				953					1,787	953
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	21				76					21	76
Loans and Leases Receivable, Net of Deferred Income	273,470				185,966	[3]				273,470	185,966	[3]
Financing Receivable, Collectively Evaluated for Impairment	267,176				183,345	[3]				267,176	183,345	[3]
Financing Receivable, Individually Evaluated for Impairment	6,294				2,621					6,294	2,621
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	62				99					62	99
Allowance for Loan and Lease Losses, Write-offs										0	0
Financing Receivable, Allowance for Credit Losses, Recovery										0	0
Provision for (recovery of) loan losses										(37)	99
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	62				99					62	99
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0				0					0	0
Loans and Leases Receivable, Net of Deferred Income	5,000				5,076					5,000	5,076
Financing Receivable, Collectively Evaluated for Impairment	5,000				5,076					5,000	5,076
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	1,022				813					1,022	813
Allowance for Loan and Lease Losses, Write-offs										176	320
Financing Receivable, Allowance for Credit Losses, Recovery										578	816
Provision for (recovery of) loan losses										(193)	(1,388)
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	548				801					548	801
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	474				12					474	12
Loans and Leases Receivable, Net of Deferred Income	71,192				70,640	[3]				71,192	70,640	[3]
Financing Receivable, Collectively Evaluated for Impairment	64,326				65,284	[3]				64,326	65,284	[3]
Financing Receivable, Individually Evaluated for Impairment	6,866				5,356					6,866	5,356
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses	21				15	[3]				21	15	[3]
Allowance for Loan and Lease Losses, Write-offs										517	498	[3]
Financing Receivable, Allowance for Credit Losses, Recovery										31	7	[3]
Provision for (recovery of) loan losses										492	498	[3]
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	21				15	[3]				21	15	[3]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0				0					0	0
Loans and Leases Receivable, Net of Deferred Income	42				434					42	434
Financing Receivable, Collectively Evaluated for Impairment	42				434					42	434
Financing Receivable, Individually Evaluated for Impairment	$ 0				$ 0					$ 0	$ 0

[1] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[2] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[3] (2) March 31, 2015 balances have been restated from previously reported results for the $701 thousand reclassification of negative escrow balances from Other Assets to Loans Receivable a

[4] 1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[5] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.

[6] 1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.