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Accounts Payable And Accrued Liabilities (Schedule Of Current Liabilities) (Details) (USD $)
In Thousands
Sep. 30, 2011
Jun. 30, 2011
Accounts Payable And Accrued Liabilities [Abstract]  
Accounts payable-trade$ 12,016$ 10,772
Accrued salaries and commissions43,83045,630
Accrued liabilities72,21560,060
Amounts payable in respect of restructuring and other special charges (note 16)7,6566,504
Accruals relating to acquisitions1,0181,042
Asset retirement obligations1,2702,241
Accounts payable and accrued liabilities$ 138,005$ 126,249