Loan Receivable and Allowance for Loan and Lease Losses Text Figures (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2012		Sep. 30, 2012		Sep. 30, 2011	Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Current	$ 2,708,000		$ 2,708,000
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	34,953,000		34,953,000			54,588,000
Loans moved to Held for Sale	9		9
Loans Receivable Held-for-sale, Reconciliation to Cash Flow, Additions to Held-for-sale			7,200,000
Amount of TDR loans upgraded to performing	6		6
TDR loan upgraded to performing	1,800,000		1,800,000
Number of paid off non performing construction loans	1		1
paid off non performing construction loans	5,000,000		5,000,000
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	9,459,000		9,459,000
Financing Receivable, Modifications, Recorded Investment	16,900,000		16,900,000			21,042,000	[1]
Deductions (Charges)					(13,984,000)	31,464,000
impaired loans	8,562,000	[2]	8,562,000	[2]		2,081,000	[2]
Impaired Financing Receivable, Related Allowance	2,281,000		2,281,000			949,000
Transfer of Other Real Estate	28,900,000
Loan Concession, Rate Redutions			1.25%		5.00%
5 Real Estate Foreclosed Propperties	2,100,000
Modified Loan Subsequently Defaulted			2,400,000
Loan Loss Allowance for TDRs			339,000
TDR Loans on Accrual Status			5,200,000
One- to four family loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 500,000		$ 500,000		$ 900,000

[1] (2) Excludes $3.5 million TDR loans that have performed in accordance with their modified terms for at least six months and are considered performing. These loans are classified as current.

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