Loan Receivable and Allowance for Loan and Lease Losses Past due financing receivable (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Dec. 31, 2012		Mar. 31, 2013		Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	$ 1,919		$ 1,073
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	249		2,165
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	9,612		9,072		9,600
Financing Receivable, Recorded Investment, Past Due	11,780		12,310
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	3,328		16,685
Performing TDR	11,012	[1]	5,040	[2]
Impaired Financing Receivable, Unpaid Principal Balance	1982	[3]	4869	[3]
Loans Receivable, Net	365,061		331,218
Financing Receivable, Gross	393,163		370,122
One- to four family loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,304		348
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	248		28
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	2,239		4,501
Financing Receivable, Recorded Investment, Past Due	3,791		4,877
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	1,497		3,141
Performing TDR	3,189	[1]	2,670	[2]
Impaired Financing Receivable, Unpaid Principal Balance	0	[3]	0	[3]
Loans Receivable, Net	109,710		63,299
Financing Receivable, Gross	118,187		73,987
Multifamily Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0		238
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		1,142
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1,363		423
Financing Receivable, Recorded Investment, Past Due	1,363		1,803
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0		0
Performing TDR	0	[1]	616	[2]
Impaired Financing Receivable, Unpaid Principal Balance	0	[3]	0	[3]
Loans Receivable, Net	46,181		54,188
Financing Receivable, Gross	47,544		56,607
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	293		220
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		846
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	5,541		2,671
Financing Receivable, Recorded Investment, Past Due	5,834		3,737
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	1,798		9,097
Performing TDR	3,882	[1]	1,290	[2]
Impaired Financing Receivable, Unpaid Principal Balance	1363	[3]	3020.00	[3]
Loans Receivable, Net	181,142		185,627
Financing Receivable, Gross	194,019		202,771
Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0		0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		0
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0		0
Financing Receivable, Recorded Investment, Past Due	0		0
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0		0
Performing TDR	0	[1]	0	[2]
Impaired Financing Receivable, Unpaid Principal Balance	0	[3]	1230.00	[3]
Loans Receivable, Net	5,068		0
Financing Receivable, Gross	5,068		1,230
Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	321		261
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		148
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	468		1,439
Financing Receivable, Recorded Investment, Past Due	789		1,848
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	33		4,447
Performing TDR	3,941	[1]	464	[2]
Impaired Financing Receivable, Unpaid Principal Balance	619	[3]	619.00	[3]
Loans Receivable, Net	22,701		27,899
Financing Receivable, Gross	28,083		35,277
Consumer Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1		6
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	1		1
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	1		38
Financing Receivable, Recorded Investment, Past Due	3		45
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0		0
Performing TDR	0	[1]	0	[2]
Impaired Financing Receivable, Unpaid Principal Balance	0	[3]	0	[3]
Loans Receivable, Net	259		205
Financing Receivable, Gross	$ 262		$ 250

[1] (1) The performing TDR category details those loans that the Company has determined that the future collection of principal and interest is reasonably assured, this generally represents those borrowers who have performed according to the restructured terms for a period of at least six months.

[2] (1) The performing TDR category details those loans that the Company has determined that the future collection of principal and interest is reasonably assured. This generally represents those borrowers who have performed according to the restructured terms for a period of at least six months.

[3] (2) Consists of loans which are less than 90 days past due but impaired due to other risk characteristics.