Restricted Stock - Summary of non-vested restricted stock (Details) (Restricted Stock) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014
Employee Plan
Number of Shares
Non-vested restricted stock outstanding at March 31, 2013	200
Restricted stock granted	53
Restricted stock vested	(82)
Restricted stock forfeited or expired	(1)
Non-vested restricted stock outstanding at March 31, 2014	170
Director Plan
Number of Shares
Non-vested restricted stock outstanding at March 31, 2013	60
Restricted stock granted	30
Restricted stock vested	(30)
Restricted stock forfeited or expired
Non-vested restricted stock outstanding at March 31, 2014	60
Both Plans
Number of Shares
Non-vested restricted stock outstanding at March 31, 2013	260
Restricted stock granted	83
Restricted stock vested	(112)
Restricted stock forfeited or expired	(1)
Non-vested restricted stock outstanding at March 31, 2014	230