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Stock-Based Compensation - Activities of RSUs and SARs (Details)
3 Months Ended
Mar. 31, 2022
$ / shares
shares
RSUs  
Shares  
Outstanding (in shares) | shares 2,334,490
Granted (in shares) | shares 0
Exercised or vested (in shares) | shares 0
Forfeited (in shares) | shares (4,625)
Expired (in shares) | shares 0
Outstanding (in shares) | shares 2,329,865
Weighted-Average Grant Date Fair Value  
Outstanding (in USD per share) | $ / shares $ 8.30
Granted (in USD per share) | $ / shares 0
Exercised or vested (in USD per share) | $ / shares 0
Forfeited (in USD per share) | $ / shares 8.30
Expired (in USD per share) | $ / shares 0
Outstanding (in USD per share) | $ / shares $ 8.30
SARs  
Shares  
Outstanding (in shares) | shares 1,935,131
Granted (in shares) | shares 0
Exercised or vested (in shares) | shares 0
Forfeited (in shares) | shares (4,723)
Expired (in shares) | shares 0
Outstanding (in shares) | shares 1,930,408
Weighted-Average Grant Date Fair Value  
Outstanding (in USD per share) | $ / shares $ 4.05
Granted (in USD per share) | $ / shares 0
Exercised or vested (in USD per share) | $ / shares 0
Forfeited (in USD per share) | $ / shares 4.05
Expired (in USD per share) | $ / shares 0
Outstanding (in USD per share) | $ / shares $ 4.05