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Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive income (loss)
Retained earnings (accumulated deficit)
Beginning balance (in shares) at Jul. 31, 2020   83,461,925      
Beginning balance at Jul. 31, 2020 $ 1,656,768 $ 8 $ 1,499,050 $ (5,246) $ 162,956
Net loss (20,190)       (20,190)
Issuance of common stock upon exercise of stock options (in shares)   39,169      
Issuance of common stock upon exercise of stock options 1,716   1,716    
Issuance of common stock upon vesting of Restricted Stock Units (RSU) (in shares)   339,759      
Stock-based compensation 28,394   28,394    
Repurchase and retirement of common stock (in shares)   (48,997)      
Repurchase and retirement of common stock (5,000)       (5,000)
Foreign currency translation adjustment (694)     (694)  
Unrealized gain (loss) on available-for-sale securities, net of tax (1,480)     (1,480)  
Reclassification adjustment for realized gain (loss) on available-for-sale securities, included in net income (loss) 347     347  
Ending balance (in shares) at Oct. 31, 2020   83,791,856      
Ending balance at Oct. 31, 2020 1,659,861 $ 8 1,529,160 (7,073) 137,766
Beginning balance (in shares) at Jul. 31, 2021   83,194,157      
Beginning balance at Jul. 31, 2021 1,544,894 $ 8 1,617,204 (6,218) (66,100)
Net loss (51,276)       (51,276)
Issuance of common stock upon exercise of stock options (in shares)   1,518      
Issuance of common stock upon exercise of stock options 17   17    
Issuance of common stock upon vesting of Restricted Stock Units (RSU) (in shares)   335,653      
Stock-based compensation 32,533   32,533    
Repurchase and retirement of common stock (in shares)   (226,172)      
Repurchase and retirement of common stock (26,262)       (26,262)
Foreign currency translation adjustment (724)     (724)  
Unrealized gain (loss) on available-for-sale securities, net of tax (868)     (868)  
Reclassification adjustment for realized gain (loss) on available-for-sale securities, included in net income (loss) 69     69  
Ending balance (in shares) at Oct. 31, 2021   83,305,156      
Ending balance at Oct. 31, 2021 $ 1,498,383 $ 8 $ 1,649,754 $ (7,741) $ (143,638)