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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 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Basic and Diluted:        
Net income $ 1,549 $ 52,826 $ 2,681 $ 58,123
Basic:        
Weighted-average shares of common stock used in computing basic net income per share 51,414 49,490 51,129 49,077
Diluted:        
Weighted-average shares of common stock used in computing basic net income per share 51,414 49,490 51,129 49,077
Weighted-average effect of dilutive securities:        
Weighted-average shares of common stock used in computing diluted net income per share 53,489 52,682 53,407 52,562
Net income per share:        
Basic $ 0.03 $ 1.07 $ 0.05 $ 1.18
Diluted $ 0.03 $ 1.00 $ 0.05 $ 1.11
Securities excluded from weighted-average shares used in computing diluted net income per share because the effect would have been anti-dilutive: [1] 852 98 790 96
Stock options [Member]        
Weighted-average effect of dilutive securities:        
Weighted-average effect of dilutive securities 1,190 1,779 1,238 1,832
Restricted stock units [Member]        
Weighted-average effect of dilutive securities:        
Weighted-average effect of dilutive securities 885 1,413 1,040 1,653
[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.