Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded	20	4,784	810	4,784
Numerator:
Net income (loss)	$ 431	$ (1,671)	$ 974	$ (4,239)
Weighted-average shares used in computing net income (loss) per share:
Basic (in shares)	52,502	51,384	52,197	51,308
Weighted-average effect of potentially dilutive shares:
Employee stock options and restricted stock units	2,316		2,442
Diluted (in shares)	54,818	51,384	54,639	51,308
Net income (loss) per share:
Basic (in dollars per share)	$ 0.01	$ (0.03)	$ 0.02	$ (0.08)
Diluted (in dollars per share)	$ 0.01	$ (0.03)	$ 0.02	$ (0.08)
Employee stock options
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded		3,262		3,262
Restricted stock units
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded	5	1,501	795	1,501
Employee stock purchase plan shares
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded	15	21	15	21