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Derivative Instruments and Hedging Activities (Fair Value of Derivative Instruments in the Condensed Consolidated Balance Sheets) (Details) - Foreign Exchange Forward - USD ($)
$ in Thousands
Mar. 31, 2016
Jun. 30, 2015
Derivatives, Fair Value [Line Items]    
Notional amount of forward contracts held to sell U.S. dollars in exchange for Canadian dollars $ 44,800 $ 76,400
Accounts Payable and Accrued Liabilities | Cash Flow Hedging | Designated As Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value Asset (Liability) $ (125)  
Prepaid Expenses and Other Current Assets | Cash Flow Hedging | Designated As Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Fair Value Asset (Liability)   $ 273