Income Taxes Tax effects of existing temporary difference (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses	$ 3,318	$ 7,215
Deferred Tax Asset Deferred Loan Cost, net	366	469
Deferred Tax Asset Non-accrual loan interest	2,265	2,911
Deferred Tax Asset Purchase Accounting Adjustment	144	170
Deferred Tax Assets, Operating Loss Carryforwards	10,289	6,572
Deferred Tax Assets, Tax Credit Carryforwards, Other	3,274	1,879
Depreciation and amortization expense	701	561
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions	110	110
Increase (Decrease) in Loans Held-for-sale	1,608	1,608
Deferred Tax Assets, Other	601	570
Deferred Tax Assets, Gross	22,676	22,065
Deferred Tax Liabilities, Investments	176	361
Deferred Tax Liabilities, Unrealized Gains on Trading Securities	394	139
Deferred Tax Liabilities, Gross	570	500
Deferred Tax Assets, Valuation Allowance	$ 22,106	$ (21,565)