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Net Income per Common Share (Schedule of Earnings per Share, Basic and Diluted) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net Income per Common Share [Abstract]        
Basic earnings per share: Income available to common stockholders $ 6,538 $ 13,218 $ 22,901 $ 32,883
Diluted earnings per share: Income available to common stockholders $ 6,538 $ 13,218 $ 22,901 $ 32,883
Basic earnings per share: Income available to common stockholders, Shares 16,830 16,982 16,868 16,986
Effect of dilutive securities: Stock options: Shares 24 374 83 383
Diluted earnings per share: Income available to common stockholders, Shares 16,854 17,356 16,951 17,369
Basic earnings per share: Income available to common stockholders, Per share amount $ 0.39 $ 0.78 $ 1.36 $ 1.94
Diluted earnings per share: Income available to common stockholders, Per share amount $ 0.39 $ 0.76 $ 1.35 $ 1.89