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Derivative Instruments And Hedging Activities (Fair Value Of Derivative Instruments In The Condensed Consolidated Balance Sheets) (Details) (USD $)
Jun. 30, 2011
Jun. 30, 2010
Notional amount forward contracts held to sell U.S. dollars in exchange for Canadian dollars $ 16,800,000 $ 0
Prepaid Expenses and Other Current Assets [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
   
Derivative assets $ 1,802,000