Fair Value Measurements Fair Value on a Non-recurring basis (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 18,991	$ 29,626
Impaired Loans with Specific Reserve Allocated	11,971	17,784
Loans and Leases Receivable, Gross, Carrying Amount	366,176	414,830
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	0
Impaired Loans with Specific Reserve Allocated	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	18,991	29,626
Impaired Loans with Specific Reserve Allocated	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	0	0
Impaired Loans with Specific Reserve Allocated	$ 11,971	$ 17,784