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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
CONSOLIDATED BALANCE SHEETS    
Accounts receivable, allowance $ 10,168 $ 14,791
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 44,898,430 44,325,772
Common stock, shares outstanding 41,395,832 40,823,174
Treasury stock, shares 3,502,598 3,502,598