Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	$ 1,204	$ 2,205	$ 0
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	479	55	14,077
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	623	917	323
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	468	120	1,518
Interest Rate Swap Agreements [Member] | Other Non-Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	1,201	2,149	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	0	0	14,077
Forward Foreign Currency Exchange Contract [Member] | Other Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	3	56	0
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	623	917	323
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	479	55	0
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	$ 468	$ 120	$ 1,518