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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Statement of Financial Position [Abstract]    
Accounts receivable trade, allowance for doubtful accounts $ 9,741 $ 6,319
Common shares issued (in shares) 267,651,084 264,059,567
Common shares outstanding (in shares) 267,651,084 264,059,567
Treasury stock (in shares) 690,336 1,101,612