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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Statement Condensed Consolidated Balance Sheets [Abstract]    
Accounts receivable, allowances $ 9,889 $ 9,887
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 60,000,000 60,000,000
Common stock, shares issued 27,888,217 27,888,217
Common stock, shares outstanding 26,727,975 26,600,562
Treasury stock, shares 1,160,242 1,287,655