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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)

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