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Stock-based Compensation (Details)
6 Months Ended
Jun. 30, 2021
shares
RSUs  
Share-based Compensation  
Number of shares of common stock per award 1
DSUs  
Share-based Compensation  
Number of shares of common stock per award 1
Vesting period 1 year
Settlement period 30 days
PSUs  
Share-based Compensation  
Number of shares of common stock per award 1
Minimum | RSUs  
Share-based Compensation  
Requisite service periods 1 year
Maximum | RSUs  
Share-based Compensation  
Requisite service periods 5 years