Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Aug. 31, 2018
Numerator:
Net income	$ 40,132	$ 28,026		$ 59,505	$ 43,582
Weighted-average shares used in computing net income per share:
Basic (in shares)	53,629	52,934		53,486	52,880
Weighted-average effect of potentially dilutive shares:
Employee stock options, restricted stock units and employee stock purchase plan shares	2,324	2,531		2,274	2,400
Diluted (in shares)	55,953	55,465		55,760	55,280
Net income per share:
Basic (in dollars per share)	$ 0.75	$ 0.53		$ 1.11	$ 0.82
Diluted (in dollars per share)	$ 0.72	$ 0.51		$ 1.07	$ 0.79
Stock Repurchase Program
Repurchases of common shares			$ 34,991		$ 34,991
Maximum
Stock Repurchase Program
Maximum value of issued and outstanding common stock eligible for repurchase under the stock repurchase program						$ 35,000
Restricted stock units
Anti-dilutive securities excluded from diluted per share calculation
Anti-dilutive securities excluded	6	18		17	49
Common Stock
Stock Repurchase Program
Repurchases of common shares (in shares)			442		442