Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Interest income foregone on non-accrual loans	$ 840	$ 993
Loans and Leases Receivable, Impaired, Description	A loan is considered impaired when it is probable that the Company will be unable to collect all amounts (principal and interest) due according to the contractual terms of the loan agreement. Typically, factors used in determining if a loan is impaired are, but not limited to, whether the loan is 90 days or more delinquent, internally designated as substandard, on non-accrual status or a troubled debt restructuring (“TDRs”).
Impaired Financing Receivable, Interest Income, Accrual Method	469,000	655,000
Financing Receivable, Modifications, Nature and Extent of Transaction	TDRs are loans where the Company, for economic or legal reasons related to the borrower's financial condition, has granted a concession to the borrower that it would otherwise not consider. A TDR typically involves a modification of terms such as a reduction of the stated interest rate or face amount of the loan, a reduction of accrued interest, or an extension of the maturity date(s) at a stated interest rate lower than the current market rate for a new loan with similar risk.
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0