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Share-Based Compensation - Stock Option Activity (Details) - $ / shares
shares in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Common Stock Options (shares)      
Outstanding at beginning of year: (in shares) 5 5 2,105
Granted (in shares) 0 0 0
Exercised (in shares) 0 0 (2,093)
Expired or forfeited (in shares) 0 0 (7)
Outstanding at end of year: (in shares) 5 5 5
Weighted Average Exercise Price (in dollar per share)      
Outstanding at beginning of year: (in dollars per share) $ 22.35 $ 22.35 $ 13.47
Granted (in dollars per share) 0 0 0
Exercised (in dollars per share) 0 0 13.45
Expired or forfeited (in dollars per share) 0 0 10.00
Outstanding at end of year: (in dollars per share) $ 22.35 $ 22.35 $ 22.35