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Accounts Payable And Accrued Liabilities - Schedule Of Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Jun. 30, 2016
Accounts Payable and Accrued Liabilities [Abstract]    
Accounts payable—trade $ 33,800 $ 35,804
Accrued salaries and commissions 67,120 77,813
Accrued liabilities 116,334 113,272
Accrued interest on Senior Notes 24,011 23,562
Amounts payable in respect of restructuring and other Special charges 3,423 5,109
Asset retirement obligations 818 1,890
Total $ 245,506 $ 257,450