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Net Income (Loss) Per Share (Details 1) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Numerator:    
Net income (loss) $ (51,276) $ (20,190)
Net income (loss) per share:    
Basic (in dollars per share) $ (0.62) $ (0.24)
Diluted (in dollars per share) $ (0.62) $ (0.24)
Weighted average shares used in computing net income (loss) per share:    
Basic (in shares) 83,225,743 83,613,287
Diluted (in shares) 83,225,743 83,613,287