Employee Benefit and Stock Compensation Plans Actuarial Assumptions for Plan Benefits (Details)	12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	0.00%	[1]	0.00%	[1]	0.00%	[1]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	8.00%		8.00%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.75%		4.18%

[1] (1) The annual salary increase rate is not applicable as the plan is frozen and no new benefits accrue.