Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Current assets:
Allowance for accounts receivable	$ 37,672	$ 38,849
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	45,000,000	45,000,000
Common stock, share issued (in shares)	25,345,798	25,408,397
Common stock, shares outstanding (in shares)	25,345,798	25,408,397