Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	$ 0	$ 83	$ 0
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	1,889	2,044	883
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	239	273	15
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	537	427	474
Forward Foreign Currency Exchange Contracts [Member] | Other Current Assets [Member]
Derivative [Line Items]
Derivatives in a Fair Value Asset Position Designated as Hedging Instruments	0	83	0
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments	239	273	15
Forward Foreign Currency Exchange Contracts [Member] | Accounts Payable And Accrued Expenses [Member]
Derivative [Line Items]
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	0	925	63
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments	537	427	474
Fair Value Hedges [Member] | 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
Fair Value Hedges [Member] | Interest Rate Swap Agreements [Member] | Long-Term Obligations [Member]
Derivative [Line Items]
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	0	0	0
Cash Flow Hedges [Member] | 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
Cash Flow Hedges [Member] | Interest Rate Swap Agreements [Member] | Other Long-Term Liabilities [Member]
Derivative [Line Items]
Derivatives in a Fair Value Liability Position Designated as Hedging Instruments	$ 1,889	$ 1,119	$ 820