Accrued Interest Receivable Accrued Interest Receivable (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Financing Receivable, Impaired [Line Items]
Accrued Investment Income Receivable	$ 2,247	$ 2,256
Loans Receivable [Member]
Financing Receivable, Impaired [Line Items]
Accrued Investment Income Receivable	1,721	1,912
Collateralized Mortgage Backed Securities [Member]
Financing Receivable, Impaired [Line Items]
Accrued Investment Income Receivable	156	173
Investments [Member]
Financing Receivable, Impaired [Line Items]
Accrued Investment Income Receivable	$ 370	$ 171