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Common Stock and Stock-Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2021
May 31, 2021
Apr. 30, 2021
Dec. 31, 2020
May 22, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock authorized (shares) 200,000,000 200,000,000 200,000,000 100,000,000 100,000,000  
Shares reserved and available for future issuance (shares) 7,100,000 7,100,000     3,900,000  
Stock-based compensation capitalized $ 1.0 $ 1.0        
2010 Equity Incentive Award Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of common stock that may be issued (shares)     16,000,000     11,500,000
2021 Employment Inducement Equity Incentive Award Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares reserved and available for future issuance (shares) 1,000,000 1,000,000        
PSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
PSUs granted (in shares)   494,000