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Derivatives And Hedging Activities (Effect Of Derivative Financial Instruments On The Consolidated Balance Sheets) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Mar. 31, 2012
Sep. 30, 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 2,117 2,044 163
Derivatives in a Fair Value Asset Position Not Designated as Hedging Instruments 230 273 13
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments 43 427 767
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 230 273 13
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 0 925 163
Derivatives in a Fair Value Liability Position Not Designated as Hedging Instruments 43 427 767
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 $ 2,117 $ 1,119 $ 0