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Net Income Per Share - Narrative (Details) - shares
3 Months Ended 9 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2021
Employee Stock Option        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Stock options excluded from the calculation of dilutive earnings (in shares) 1,758,631 1,280,000 1,964,131 3,180,000