Investment Securities Text Figures (Details) (USD $)	9 Months Ended		12 Months Ended
	Dec. 31, 2014		Mar. 31, 2014
Schedule of Investments [Line Items]
Number of agencies with unrealized loss more than 12 months	8
Available-for-sale	$ 100,448,000		$ 89,461,000
Percentage Available-for-sale Securities	89.10%
Held-to-maturity	12,253,000		9,029,000
Held-to-maturity Securities, Amortized Cost	12,253,000	[1]	9,029,000	[1]
Percentage Held-to-maturity Securities	10.90%
Trading Securities	0
Number of securities with unrealized loss	31		35
US Government Agency Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	68.90%
Available-for-sale	56,535,000		52,189,000
Mortgage-backed securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	31.10%
Number of MBS with unrealized loss more than 12 months	15
Available-for-sale	27,689,000		27,741,000
Held-to-maturity Securities, Amortized Cost			$ 8,822,000	[1]

[1] * The carrying amount and amortized cost are the same for all held-to-maturity securities, as no OTTI has been recorded.