Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Current assets:
Allowance for doubtful accounts	$ 1,478	$ 1,190
Stockholders’ equity:
Convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	2,000	2,000
Convertible preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	750,000	750,000
Common stock, shares issued	116,124	110,925
Common stock, shares outstanding	116,124	110,925