Restructuring Costs (Reconciliation Of Company's Liability For The Restructuring Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Costs charged to expense	$ 4,890us-gaap_RestructuringCharges	$ 6,746us-gaap_RestructuringCharges	$ 4,113us-gaap_RestructuringCharges
Payments	(6,182)us-gaap_PaymentsForRestructuring	(4,942)us-gaap_PaymentsForRestructuring	(5,293)us-gaap_PaymentsForRestructuring
Balance	894us-gaap_RestructuringReserve	2,186us-gaap_RestructuringReserve	382us-gaap_RestructuringReserve	1,562us-gaap_RestructuringReserve
Employee Termination Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	4,354	3,743	4,113
Payments	(5,684)	(2,099)	(5,002)
Balance	696	2,026	382	1,271
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other restructuring costs	536	3,003	0
Payments	(498)	(2,843)	(291)
Balance	$ 198	$ 160	$ 0	$ 291

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.

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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.

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- 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.

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