Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Summary of Number of Performance RSUs Outstanding and Weighted-average Grant Date Fair Value of PSUs (Details)

v3.21.2
Share-Based Compensation - Summary of Number of Performance RSUs Outstanding and Weighted-average Grant Date Fair Value of PSUs (Details) - Performance RSUs - $ / shares
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Shares, RSUs outstanding Beginning Balance 983,000  
Number of Shares, Granted 0 1,079,000
Number of Shares, Shares vested (478,500)  
Number of Shares, Expired (97,500)  
Number of Shares, RSUs outstanding Ending Balance 407,000  
Weighted average grant date fair value per share, RSUs outstanding Beginning Balance $ 2.20  
Weighted average grant date fair value per share, Shares Vested 2.08  
Weighted average grant date fair value per share, Expired 2.08  
Weighted average grant date fair value per share, RSUs outstanding Ending Balance $ 2.39