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Stock-Based Compensation - Summary of Unvested PSU Award Activity (Details) - Performance Shares - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Shares      
Beginning period (in shares) 1,879,425    
Shares granted (in shares) 1,099,800    
Shares Vested (in shares) (227,500) 0 0
End period (in shares) 2,751,725 1,879,425  
Weighted-Average Grant Date Fair Value      
Beginning of period (in dollars per share) $ 7.65    
Granted (in dollars per share) 10.85 $ 5.36 $ 9.30
Vested (in dollars per share) 13.75    
End of period (in dollars per share) $ 8.42 $ 7.65