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Stockholders' Equity - Additional Information (Details) - USD ($)
1 Months Ended 9 Months Ended
Apr. 30, 2021
Jun. 30, 2014
Sep. 30, 2021
Class Of Stock [Line Items]      
Shares of common stock issued pursuant to exercise of stock options     369,978
Proceeds from stock options exercised     $ 5,700,000
Total unrecognized compensation cost related to non-vested, stock-based payment awards     $ 86,000,000.0
Total unrecognized compensation cost, expect to recognize over weighted average period     2 years 6 months
Restricted Stock Units      
Class Of Stock [Line Items]      
Share-based compensation arrangement by share-based payment award, award vesting period     4 years
Pre-funded Warrants      
Class Of Stock [Line Items]      
Class of warrant or right, number of securities called by warrants or rights   600,000  
Class of warrant or right, exercise price of warrants or rights   $ 0.01  
Class of warrant or right, expiration date   Jun. 30, 2021  
Class of warrant or right, exercised during period 195,574,000    
Stock issued during period, shares, warrants exercised 195,461,000    
Proceeds from issuance of warrants $ 0    
Class of warrant or right, outstanding     0