Net Income per Share - Calculation of Basic and Diluted Net Income per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Basic and Diluted:
Net income		$ 941	$ 7,117	$ 59,064	$ 10,509
Basic:
Weighted-average shares of common stock used in computing basic net income per share		49,907	46,602	49,349	46,047
Diluted:
Weighted-average shares of common stock used in computing basic net income per share		49,907	46,602	49,349	46,047
Weighted-average effect of dilutive securities:
Weighted-average shares of common stock used in computing diluted net income per share		52,932	51,275	52,681	49,201
Net income per share:
Basic		$ 0.02	$ 0.15	$ 1.20	$ 0.23
Diluted		$ 0.02	$ 0.14	$ 1.12	$ 0.21
Securities excluded from weighted-average shares used in computing diluted net income per share because the effect would have been anti-dilutive:	[1]	117	155	104	1,444
Stock options [Member]
Weighted-average effect of dilutive securities:
Weighted-average effect of dilutive securities		1,697	1,967	1,787	1,138
Restricted stock units [Member]
Weighted-average effect of dilutive securities:
Weighted-average effect of dilutive securities		1,328	2,706	1,545	2,016

[1] These weighted-shares relate to anti-dilutive stock options and restricted stock units as calculated using the treasury stock method and could be dilutive in the future.