Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	$ 0	$ 106	$ 0
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	6,430	3,446	638
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	4,354	5,148	5,172
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	12	183	109
Interest Rate Swap Agreements [Member] | Other Non-Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	0	0	0
Interest Rate Swap Agreements [Member] | Other Long-Term Liabilities [Member]
Derivative [Line Items]
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	6,430	3,050	638
Forward Foreign Currency Exchange Contract [Member] | Other Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	0	106	0
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	4,354	5,148	5,172
Forward Foreign Currency Exchange Contract [Member] | Accounts Payable and Accrued Expenses [Member]
Derivative [Line Items]
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	0	396	0
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	$ 12	$ 183	$ 109