Annual report pursuant to Section 13 and 15(d)

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

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Share-Based Compensation - Summary of Number of Performance RSUs Granted and Weighted-average Grant Date Fair Value of PSUs (Details) - Performance RSUs - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Number of Shares, RSUs outstanding Beginning Balance 983,000 50,000  
Number of Shares, Granted 0 1,079,000 50,000
Number of Shares, Shares vested (629,500)    
Number of Shares, Forfeited (327,500) (146,000)  
Number of Shares, RSUs outstanding Ending Balance   983,000 50,000
Number of Shares, Expired (26,000)    
Weighted average grant date fair value per share, RSUs outstanding Beginning Balance $ 2.20 $ 8.21  
Weighted average grant date fair value per share, Granted   2.04 $ 8.21
Weighted average grant date fair value per share, Shares Vested 2.06    
Weighted average grant date fair value per share, Forfeited 1.99 3.05  
Weighted average grant date fair value per share, RSUs outstanding Ending Balance   $ 2.20 $ 8.21
Weighted average grant date fair value per share, Expired $ 8.21