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Investment Securities Text Figures (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Mar. 31, 2013
Schedule of Investments [Line Items] |  |
AFS Fair Value | $ 116,400 |
Percentage Available-for-sale Securities | 89.60% |
Held-to-maturity Securities | $ 13,500 | $ 9,043
Percentage Held-to-maturity Securities | 10.40% |
Number of securities with unrealized loss | 35 | 13
US Government Agencies Debt Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Percentage Available-for-Sale, Continuos Unrealized Loss Position | 52.80% |
Collateralized Mortgage Backed Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Percentage Available-for-Sale, Continuos Unrealized Loss Position | 36.60% |

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