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Share-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Stock option activity    
Options outstanding (in shares) 52,805  
Options exercised (in shares) (11,075)  
Options outstanding (in shares) 39,930  
Options exercisable (in shares) 39,930  
Stock option activity, weighted average exercise price    
Options Outstanding, weighted average exercise price (in dollars per share) $ 9.81  
Options exercised, weighted average exercise price (in dollars per share) 11.87  
Options Outstanding, weighted average exercise price (in dollars per share) 9.12  
Options exercisable, weighted average exercise price (in dollars per share) $ 9.12  
Options outstanding, weighted average remaining contractual term 4 months 17 days  
Options exercisable, weighted average remaining contractual term 4 months 17 days  
Options outstanding, aggregate intrinsic value $ 566  
Options exercisable, aggregate intrinsic value 566  
Intrinsic value of options exercised 118 $ 1
Cash received from options exercised 132 1
Excess tax benefit realized for options exercises $ 22 $ 0
Granted (in shares) 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period 1,800  
Options forfeited, weighted average exercise price (in dollars per share) $ 12.50  
Options vested or expected to vest (in shares) 39,930  
Options vested or expected to vest, weighted average exercise price (in dollars per share) $ 9.12  
Options vested or expected to vest, weighted average remaining contractual term 4 months 17 days  
Options vested or expected to vest, aggregate intrinsic value $ 566