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Derivative Instruments And Hedging Activities (Fair Value Of Derivative Instruments In The Condensed Consolidated Balance Sheets) (Details) - Foreign Exchange Forward [Member] - USD ($)
$ in Thousands
Sep. 30, 2015
Jun. 30, 2015
Derivatives, Fair Value [Line Items]    
Notional amount of forward contracts held to sell U.S. dollars in exchange for Canadian dollars $ 65,000 $ 76,400
Accounts Payable and Accrued Liabilities [Member] | Cash Flow Hedging [Member] | Designated As Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value Asset (Liability) $ (3,643)  
Prepaid Expenses and Other Current Assets [Member] | Cash Flow Hedging [Member] | Designated As Hedging Instrument [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value Asset (Liability)   $ 273