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Shareholders' Equity - Restricted Stock Grants (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Class Of Stock [Line Items]      
Compensation expense $ 100 $ 100 $ 400
Recognized income tax benefit $ 30 30 100
Weighted average period of amortized cost 2 years    
Restricted Stock [Member]      
Class Of Stock [Line Items]      
Compensation expense $ 1,200 900 200
Recognized income tax benefit 400 300 $ 100
Unamortized compensation and directors' cost $ 2,900    
Weighted average period of amortized cost 2 years 4 months 24 days    
Total fair value of shares vested $ 1,300 $ 700  
Shares vested 58   0
Shares      
Unvested shares (in shares) 165    
Granted (in shares) 71    
Vested (in shares) (58)   0
Forfeited (in shares) (2)    
Unvested shares (in shares) 176 165  
Weighted Average Grant-Date Fair Value      
Unvested shares (in dollars per share) $ 21.72    
Granted (in dollars per share) 21.32    
Vested (in dollars per share) 21.97    
Forfeited (in dollars per share) 27.16    
Unvested shares (in dollars per share) $ 21.42 $ 21.72