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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Current assets:    
Allowance for accounts receivable $ 45,561 $ 44,434
Shareholders’ equity:    
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized (in shares) 3,000,000 3,000,000
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 45,000,000 45,000,000
Common stock, shares issued (in shares) 25,593,122 25,431,845
Common stock, shares outstanding (in shares) 25,593,122 25,431,845