Summary of Financing Arrangements for Leveraged ESOP Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Issued June, 1991 [Member]
Debt Disclosure [Abstract]
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount	$ 1,054
Employee stock ownership plan (ESOP), interest payments	53	250	299
Issued March, 1999 [Member]
Debt Disclosure [Abstract]
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount	0
Employee stock ownership plan (ESOP), interest payments	0	0	0
Issued February, 2000 [Member]
Debt Disclosure [Abstract]
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount	0
Employee stock ownership plan (ESOP), interest payments	0	0	0
Issued April, 2001 [Member]
Debt Disclosure [Abstract]
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount	0
Employee stock ownership plan (ESOP), interest payments	0	0	5
Issued July, 2009 [Member]
Debt Disclosure [Abstract]
Employee stock ownership plan (ESOP), debt structure, indirect loan, amount	744
Employee stock ownership plan (ESOP), interest payments	$ 17	$ 35	$ 15