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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2018
Jun. 30, 2018
Statement of Financial Position [Abstract]    
Accounts receivable trade, allowance for doubtful accounts $ 16,256 $ 9,741
Common shares issued (in shares) 268,569,471 267,651,084
Common shares outstanding (in shares) 268,569,471 267,651,084
Treasury stock (in shares) 816,704 690,336