Investment Securities Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	$ 102,230	$ 94,233
Available-for-sale Securities, Gross Unrealized Gain	102	0
Available-for-sale Securities, Gross Unrealized Loss	(1,147)	(4,772)
Available-for-sale	101,185	89,461
Held-to-maturity Securities, Amortized Cost	11,922	9,029
Held-to-maturity Securities, Unrecognized Holding Gain	309	225
Held-to-maturity Securities, Unrecognized Holding Loss	0	(283)
Held-to-maturity securities fair value	12,231	8,971
securities amortized cost	114,152	103,262
Unrealized Gain on Securities	411	225
Unrealized Loss on Securities	(1,147)	(5,055)
Investments, Fair Value Disclosure	113,416	98,432
Government National Mortgage Association
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	5,575	5,972
Available-for-sale Securities, Gross Unrealized Gain	9	0
Available-for-sale Securities, Gross Unrealized Loss	(57)	(307)
Available-for-sale	5,527	5,665
Held-to-maturity Securities, Amortized Cost	3,100	3,743
Held-to-maturity Securities, Unrecognized Holding Gain	232	225
Held-to-maturity Securities, Unrecognized Holding Loss	0	0
Held-to-maturity securities fair value	3,332	3,968
Federal Home Loan Mortgage Corporation
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	10,705	12,160
Available-for-sale Securities, Gross Unrealized Gain	10	0
Available-for-sale Securities, Gross Unrealized Loss	(127)	(564)
Available-for-sale	10,588	11,596
Federal National Mortgage Association
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	10,925	10,897
Available-for-sale Securities, Gross Unrealized Gain	35	0
Available-for-sale Securities, Gross Unrealized Loss	(103)	(466)
Available-for-sale	10,857	10,431
Held-to-maturity Securities, Amortized Cost	8,655	5,079
Held-to-maturity Securities, Unrecognized Holding Gain	77	0
Held-to-maturity Securities, Unrecognized Holding Loss	0	(283)
Held-to-maturity securities fair value	8,732	4,796
Other mortgage-backed securities
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	47	49
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities, Gross Unrealized Loss	0	0
Available-for-sale	47	49
Mortgage-backed securities
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	27,252	29,078
Available-for-sale Securities, Gross Unrealized Gain	54	0
Available-for-sale Securities, Gross Unrealized Loss	(287)	(1,337)
Available-for-sale	27,019	27,741
Held-to-maturity Securities, Amortized Cost	11,755	8,822
Held-to-maturity Securities, Unrecognized Holding Gain	309	225
Held-to-maturity Securities, Unrecognized Holding Loss	0	(283)
Held-to-maturity securities fair value	12,064	8,764
US Government Agency Securities
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	58,464	55,155
Available-for-sale Securities, Gross Unrealized Gain	48	0
Available-for-sale Securities, Gross Unrealized Loss	(662)	(2,966)
Available-for-sale	57,850	52,189
Other
Schedule of Investments [Line Items]
Available-for-sale Securities, Amortized Cost Basis	16,514	10,000
Available-for-sale Securities, Gross Unrealized Gain	0	0
Available-for-sale Securities, Gross Unrealized Loss	(198)	(469)
Available-for-sale	16,316	9,531
Held-to-maturity Securities, Amortized Cost	167	207
Held-to-maturity Securities, Unrecognized Holding Gain	0	0
Held-to-maturity Securities, Unrecognized Holding Loss	0	0
Held-to-maturity securities fair value	$ 167	$ 207

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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