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Investment Securities Investment Securities Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Mar. 31, 2015
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | $ 76,578 | $ 102,230
Available-for-sale Securities, Gross Unrealized Gain |  | 43 | 102
Available-for-sale Securities, Gross Unrealized Loss |  | (861) | (1,147)
Available-for-sale |  | 75,760 | 101,185
Held-to-maturity Securities, Amortized Cost | [1] | 16,087 | 11,922
Held-to-maturity Securities, Unrecognized Holding Gain | [1] | 251 | 309
Held-to-maturity Securities, Unrecognized Holding Loss | [1] | (27) | 0
Held-to-maturity Securities, Fair Value | [1] | 16,311 | 12,231
securities amortized cost |  | 92,665 | 114,152
Unrealized Gain on Securities |  | 294 | 411
Unrealized Loss on Securities |  | (888) | (1,147)
Investments, Fair Value Disclosure |  | 92,071 | 113,416
Government National Mortgage Association |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 5,169 | 5,575
Available-for-sale Securities, Gross Unrealized Gain |  | 18 | 9
Available-for-sale Securities, Gross Unrealized Loss |  | (5) | (57)
Available-for-sale |  | 5,182 | 5,527
Held-to-maturity Securities, Amortized Cost | [1] | 2,657 | 3,100
Held-to-maturity Securities, Unrecognized Holding Gain | [1] | 167 | 232
Held-to-maturity Securities, Unrecognized Holding Loss | [1] | 0 | 0
Held-to-maturity Securities, Fair Value | [1] | 2,824 | 3,332
Federal Home Loan Mortgage Corporation |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 8,398 | 10,705
Available-for-sale Securities, Gross Unrealized Gain |  | 0 | 10
Available-for-sale Securities, Gross Unrealized Loss |  | (127) | (127)
Available-for-sale |  | 8,271 | 10,588
Federal National Mortgage Association |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 8,449 | 10,925
Available-for-sale Securities, Gross Unrealized Gain |  | 0 | 35
Available-for-sale Securities, Gross Unrealized Loss |  | (77) | (103)
Available-for-sale |  | 8,372 | 10,857
Held-to-maturity Securities, Amortized Cost | [1] | 12,430 | 8,822
Held-to-maturity Securities, Unrecognized Holding Gain | [1] | 84 | 77
Held-to-maturity Securities, Unrecognized Holding Loss | [1] | (27) | 0
Held-to-maturity Securities, Fair Value | [1] | 12,487 | 8,899
Other mortgage-backed securities |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 46 | 47
Available-for-sale Securities, Gross Unrealized Gain |  | 0 | 0
Available-for-sale Securities, Gross Unrealized Loss |  | 0 | 0
Available-for-sale |  | 46 | 47
Mortgage-backed securities |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 22,062 | 27,252
Available-for-sale Securities, Gross Unrealized Gain |  | 18 | 54
Available-for-sale Securities, Gross Unrealized Loss |  | (209) | (287)
Available-for-sale |  | 21,871 | 27,019
Held-to-maturity Securities, Amortized Cost | [1] | 15,087 | 11,922
Held-to-maturity Securities, Unrecognized Holding Gain | [1] | 251 | 309
Held-to-maturity Securities, Unrecognized Holding Loss | [1] | (27) | 0
Held-to-maturity Securities, Fair Value | [1] | 15,311 | 12,231
US Government Agency Securities |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 43,533 | 58,464
Available-for-sale Securities, Gross Unrealized Gain |  | 25 | 48
Available-for-sale Securities, Gross Unrealized Loss |  | (418) | (662)
Available-for-sale |  | 43,140 | 57,850
Other |  |  |
Schedule of Investments [Line Items] |  |  |
Available-for-sale Securities, Amortized Cost Basis |  | 10,983 | 16,514
Available-for-sale Securities, Gross Unrealized Gain |  | 0 | 0
Available-for-sale Securities, Gross Unrealized Loss |  | (234) | (198)
Available-for-sale |  | 10,749 | 16,316
Held-to-maturity Securities, Amortized Cost | [1] |  | 0
Held-to-maturity Securities, Unrecognized Holding Gain | [1] |  | 0
Held-to-maturity Securities, Unrecognized Holding Loss | [1] |  | 0
Held-to-maturity Securities, Fair Value | [1] |  | $ 0
Corporate Bond Securities [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Held-to-maturity Securities, Amortized Cost | [1] | 1,000 |
Held-to-maturity Securities, Unrecognized Holding Gain | [1] | 0 |
Held-to-maturity Securities, Unrecognized Holding Loss | [1] | 0 |
Held-to-maturity Securities, Fair Value | [1] | $ 1,000 |
[1] | * The carrying amount and amortized cost are the same for all held-to-maturity securities, as no OTTI has been recorded.

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