Restructuring Costs (Cumulative Restructuring Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 4,890us-gaap_RestructuringCharges	$ 6,746us-gaap_RestructuringCharges	$ 4,113us-gaap_RestructuringCharges
Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	4,354	3,743	4,113
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	$ 536	$ 3,003	$ 0

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

+ References+ Details

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References+ Details

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References+ Details