Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plans and Stock-Based Compensation - Additional Information (Details)

v3.21.1
Equity Incentive Plans and Stock-Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended
Apr. 30, 2021
Sep. 30, 2020
Apr. 30, 2021
Apr. 30, 2020
Jan. 31, 2021
Jun. 30, 2018
Jun. 30, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Weighted-average grant date fair value of stock options granted     $ 55.91 $ 5.25      
Intrinsic value of stock options exercised     $ 101,000 $ 21,800      
Cumulative stock-based compensation expense     250,835 8,201      
Capitalized stock-based compensation expenses relating to software development cost     2,200        
Stock Options              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Incremental expense       2,200      
Unrecognized compensation expense $ 99,800   $ 99,800        
Weighted-average remaining period     2 years 7 months 6 days        
Early Exercised Options              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Outstanding underlying unvested stock options that had been early exercised 1,700,000   1,700,000        
Accrued proceeds from unvested early exercised stock options $ 4,200   $ 4,200   $ 5,900    
Restricted Stock Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Incremental expense     8,900        
Unrecognized compensation expense $ 288,200   $ 288,200        
Weighted-average remaining period     3 years 3 months 18 days        
Fair value of RSUs vested     $ 1,003,600 $ 0      
Cumulative stock-based compensation expense     $ 233,000        
Accelerated vesting shares     200,000        
Grant date fair value per share     $ 56.00        
Restricted Stock Awards              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Unrecognized compensation expense   $ 3,400          
Weighted-average remaining period     3 years 4 months 24 days        
Restricted stock awards issued   100,000          
Grant date fair value per share   $ 33.22          
Restricted stock awards issued, value   $ 4,000          
Award vesting period     4 years        
2015 Stock Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Shares available for future issuances             0
Terminated month and year     2018-06        
2018 Stock Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Shares available for future issuances           0  
Terminated month and year     2021-04        
2021 Stock Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Percentage of total number of shares 5.00%            
Period of shares automatically increase 10 years            
Terms of award     In addition, the number of shares of our Class A common stock reserved for issuance under the 2021 Plan will automatically increase on February 1 of each year for a period of ten years, beginning on February 1, 2022 and continuing through February 1, 2031, in an amount equal to (1) 5% of the total number of shares of our common stock (both Class A and Class B) outstanding on the preceding January 31, or (2) a lesser number of shares determined by our board of directors no later than the February 1 increase.        
2021 Stock Plan | Class A Common Stock              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Shares available for future issuances 118,800,000   118,800,000        
2021 Employee Stock Purchase Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Shares available for future issuances 15,500,000   15,500,000        
Percentage of total number of shares 1.00%            
Period of shares automatically increase 10 years            
Terms of award     The number of shares of our Class A common stock reserved for issuance will automatically increase on February 1 of each year for a period of ten years, beginning on February 1, 2022 and continuing through February 1, 2031, by the lesser of (i) 1% of the total number of shares of our common stock (both Class A and Class B) outstanding on the preceding January 31; and (ii) 15.5 million shares, except before the date of any such increase, our board of directors may determine that such increase will be less than the amount set forth in clauses (i) and (ii) above.        
Number of shares authorized 10,500,000   10,500,000        
First purchase date Dec. 20, 2021