Investment Securities Carrying Value (Amortized Cost) and Fair Value by remaining period of contractual maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
INVESTMENT SECURITIES [Abstract]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 5,533
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	$ 5,533
Available-for-sale, Securities, Debt Maturities, within One Year, Weighted Average Rate	0.25%
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	$ 16,481
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	$ 16,483
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Weighted Average Rate	1.28%
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	$ 27,711
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	$ 27,394
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Weighted Average Rate	1.87%
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	$ 52,505
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	$ 51,775
Available-for-sale Securities, Debt Maturities, after Ten Years, Weighted Average Rate	1.60%
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	$ 102,230
Available-for-sale	$ 101,185	$ 89,461
Available-for-sale Securities, Debt Maturities, Weighted Average Rate	1.55%
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	$ 6,347
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	$ 6,453
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Weighted Average Rate	2.62%
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	$ 5,575
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	$ 5,778
Held-to-maturity Securities, Debt Maturities, after Ten Years, Weighted Average Rate	2.70%
Held-to-maturity	$ 11,922	9,029
Held-to-maturity securities fair value	$ 12,231	$ 8,971
Held-to-maturity Securities, Debt Maturities, Weighted Average Rate	2.66%