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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Numerator [Abstract]      
Net income $ 81,814 $ 87,939 $ 59,504
Basic earnings per share [Abstract]      
Weighted average shares (in shares) 17,836,000 17,786,000 17,748,000
Diluted earnings per share [Abstract]      
Dilutive effect of equity grants (in shares) 15,000 18,000 8,000
Adjusted weighted average shares (in shares) 17,851,000 17,804,000 17,756,000
Earnings per share [Abstract]      
Basic earnings per share (in dollars per share) $ 4.59 $ 4.94 $ 3.35
Diluted earnings per share (in dollars per share) $ 4.58 $ 4.94 $ 3.35
Options [Member]      
Earnings Per Share [Abstract]      
Options excluded from diluted calculations (in shares) 0 0 0