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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 | Dec. 31, 2015 | Jun. 30, 2015
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Derivatives, Fair Value [Line Items] |  |
Notional amount of forward contracts held to sell U.S. dollars in exchange for Canadian dollars | $ 57,300 | $ 76,400
Accounts Payable and Accrued Liabilities | Cash Flow Hedging | Designated As Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Fair Value Asset (Liability) | $ (4,479) |
Prepaid Expenses and Other Current Assets | Cash Flow Hedging | Designated As Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Fair Value Asset (Liability) |  | $ 273

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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