Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded (in shares)	155	158	835	802
Numerator:
Net income	$ 14,801	$ 6,161	$ 10,562	$ 1,561
Weighted-average shares used in computing net loss per share:
Basic (in shares)	51,447	50,962	51,353	50,865
Weighted-average effect of potentially dilutive shares:
Employee stock options, restricted stock units and employee stock purchase plan shares	2,555	2,462	2,634	2,566
Diluted (in shares)	54,002	53,424	53,987	53,431
Net income per share:
Basic (in dollars per share)	$ 0.29	$ 0.12	$ 0.21	$ 0.03
Diluted (in dollars per share)	$ 0.27	$ 0.12	$ 0.20	$ 0.03
Employee stock options
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded (in shares)	145	147	145	147
Restricted stock units
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded (in shares)	10	11	690	655