Employee Benefit Plans Employee Benefit Plans - Endorsement Split-Dollar Life Insurance (Details Textual) (Endorsement Split-Dollar Life Insurance [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Endorsement Split-Dollar Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash Surrender Value of Life Insurance, Increase in Face Amount	$ 0.5
Amount of postretirement benefit classified in Other non-current liabilities in Consolidated Balance Sheet	0.2
Aggregate cash surrender value of underlying life insurance, net of policy loans	2.5	2.4
Policy loans	0.6	0.2
Corporate-owned life insurance policies, gain (loss) recognized and classified within Other (income) expenses, net on Consolidated Statements of Operations	$ 0.1	$ 0.6	$ 0.1