Employee Benefit and Stock Compensation Plans Net Periodic Pension Benefit (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Interest Cost	$ 61	$ 106	$ 122
Periodic Pension Benefit Unrecognized loss	34	45	61
Defined Benefit Plan, Settlements, Benefit Obligation	1,180	100	0
Defined Benefit Plan, Expected Return on Plan Assets	(106)	(176)	(163)
Defined Benefit Plan, Net Periodic Benefit Cost	$ 1,169	$ 75	$ 20