Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	$ 853	$ 475	$ 0
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	0	10,766	1,573
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	4	297	540
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	1,229	5	90
Interest Rate Swap Agreements [Member] | Other Non-Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	853	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	0	10,766	1,573
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	475	0
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	4	297	540
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	0	0
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	$ 1,229	$ 5	$ 90