Loan Receivable and Allowance for Loan and Lease Losses Text Figures (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Jun. 30, 2013	Sep. 30, 2013 Business [Member]	Sep. 30, 2013 One- to four family loans [Member]	Sep. 30, 2012 One- to four family loans [Member]	Sep. 30, 2013 Fair Value, Inputs, Level 2 [Member]	Mar. 31, 2013 Fair Value, Inputs, Level 2 [Member]	Mar. 31, 2012 Fair Value, Inputs, Level 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Decrease in non-accrual loans			$ (12,500,000)
Percentage decrease in non-accrual loans			(40.70%)
Financing Receivable, Modifications, Number of Contracts	0		0			2	1	1
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	18,140,000		18,140,000		30,626,000
Number of non performing loans moved to held for sale	13
Non performing loans moved to held for sale			7,100,000
Amount of TDR loans upgraded to performing	10		10
TDR loan upgraded to performing	6,400,000		6,400,000
Number of non performing multi family loans that paid off			1
Non performing loan multi family that paid off			1,100,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	9,957,000		9,957,000		9,072,000
Financing Receivable, Modifications, Recorded Investment	4,600,000		4,600,000		16,700,000
impaired loans	3,600,000		3,600,000		4,900,000
Other non-performing asset	8,800,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	970,000		970,000		2,386,000					970,000	2,386,000
Number of Real Estate Properties	10		10		9
Number of loans modified with interest rate concession of 2%			1
Loans Rate Concession of 2%			2.00%
Number of loans modified, extended maturity			1
Financing Receivable, Modifications, Post-Modification Recorded Investment						1,268,000	719,000	549,000	500,000
Loans modified int. rate concession of 1.25%				0.0125
Number of Modified Loan Subsequently Defaulted			0	1
Modified Loan Subsequently Defaulted		2,400,000		2,400,000
Number of loans modified with interest rate concessions		0		1
Loans in TDR performing modified terms			18		9
TDR Loans on Accrual Status	10,900,000		10,900,000		5,000,000
Loans Held-for-sale (HFS)	$ 7,854,000		$ 7,854,000		$ 13,107,000					$ 7,854,000	$ 13,107,000	$ 13,107,000
number of loans to related parties	0		0