Employee Benefit and Stock Compensation Plans Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	$ 0	$ 0	$ 2,426
Defined Benefit Plan, Interest Cost	0	61	106
Defined Benefit Plan, Actuarial Gain (Loss)	0	(165)
Defined Benefit Plan, Benefits Paid	0	(2,497)
Defined Benefit Plan, Settlements, Benefit Obligation	0	175
Defined Benefit Plan, Fair Value of Plan Assets	0	0	$ 2,023
Defined Benefit Plan, Actual Return on Plan Assets Still Held	0	120
Defined Benefit Plan, Contributions by Employer	0	354
Fair Value plan assets benefits paid	0	(97)
Defined Benefit Plan, Settlements, Plan Assets	0	(2,400)
Defined Benefit Plan, Funded Status of Plan	0	0
Pension and Other Postretirement Defined Benefit Plans, Liabilities	$ 0	$ 0