Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Current assets:
Allowance for doubtful accounts	$ 1,685	$ 1,190
Stockholders’ equity:
Convertible preferred stock, par value (in dollars per share)	$ 1	$ 1
Convertible preferred stock, shares authorized	2,000,000	2,000,000
Convertible preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	113,304,977	110,924,508
Common stock, shares outstanding	113,304,977	110,924,508