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Share-Based Compensation - Stock Options Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based compensation      
Outstanding stock option award fully vested (in shares) 1    
Stock Options      
Share-based compensation      
Recognized share-based compensation expense $ 0 $ 0 $ 0
Unrecognized compensation costs remained related to stock option awards $ 0