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Stock-Based Compensation - Activity for PSUs Classified as Equity (Details) - Performance Share Units - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares      
Shares Outstanding Beginning Balance 517    
Shares Granted (30)    
Shares Vested (169)    
Shares Forfeited (10)    
Shares Outstanding Ending Balance 308 517  
Weighted Average Grant Date Fair Value at Beginning of Period $ 30.31    
Weighted Average Grant Date Fair Value of Shares Granted 51.26 $ 23.49 $ 41.57
Weighted Average Grant Date Fair Value of Shares Vested 38.81    
Weighted Average Grant Date Fair Value of Shares Forfeited 31.12    
Weighted Average Grant Date Fair Value at End of Period $ 23.58 $ 30.31