Fair Value Measurements Fair Value on a Recurring basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage servicing rights	$ 239	$ 265
Government National Mortgage Asscociation, AFS, Fair Value Disclosure	5,654	5,665
Federal Home Loan Mortgage Corp., AFS, Fair Value Disclosure	11,030	11,596
Federal National Mortgage Corporation, AFS, Fair Value Disclosure	9,984	10,431
Other	48	49
US Government Agency securities	52,835	52,189
Other Securities, AFS, Fair Value Disclosure	15,163	9,531
Available-for-sale	94,714	89,461
Assets, Fair Value Disclosure	94,953	89,726
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage servicing rights	0	0
Government National Mortgage Asscociation, AFS, Fair Value Disclosure	0	0
Federal Home Loan Mortgage Corp., AFS, Fair Value Disclosure	0	0
Federal National Mortgage Corporation, AFS, Fair Value Disclosure	0	0
Other		0
US Government Agency securities	0	0
Other Securities, AFS, Fair Value Disclosure	0	0
Available-for-sale	0	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage servicing rights	0	0
Government National Mortgage Asscociation, AFS, Fair Value Disclosure	5,654	5,665
Federal Home Loan Mortgage Corp., AFS, Fair Value Disclosure	11,030	11,596
Federal National Mortgage Corporation, AFS, Fair Value Disclosure	9,984	10,431
Other	0	0
US Government Agency securities	52,835	52,189
Other Securities, AFS, Fair Value Disclosure	15,163	9,531
Available-for-sale	94,666	89,412
Assets, Fair Value Disclosure	94,666	89,412
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Mortgage servicing rights	239	265
Government National Mortgage Asscociation, AFS, Fair Value Disclosure	0	0
Federal Home Loan Mortgage Corp., AFS, Fair Value Disclosure	0	0
Federal National Mortgage Corporation, AFS, Fair Value Disclosure	0	0
Other	48	49
US Government Agency securities	0	0
Other Securities, AFS, Fair Value Disclosure	0	0
Available-for-sale	48	49
Assets, Fair Value Disclosure	$ 287	$ 314