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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Basic and Diluted Earnings:            
Net income $ 25,405 $ 24,996 $ 21,317 $ 34,091 $ 50,401 $ 55,408
Basic weighted-average shares outstanding (in shares) 32,119   32,632   32,237 32,730
Add: Stock awards (in shares) 132   167   157 130
Diluted weighted-average shares outstanding (in shares) 32,251   32,799   32,394 32,860
Basic earnings per share:            
Earnings per common share - basic (in dollars per share) $ 0.79   $ 0.65   $ 1.56 $ 1.69
Diluted earnings per share:            
Earnings per common share - diluted (in dollars per share) $ 0.79   $ 0.65   $ 1.56 $ 1.69
Number of antidilutive options (in shares) 18   3   1 231