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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, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Net Income per Common Share [Abstract]        
Net income available to common stockholders $ 8,322 $ 8,312 $ 23,489 $ 13,559
Basic earnings per share- Income available to Common stockholders 8,036 7,980 22,637 12,545
Diluted earnings per share- Income available to Common stockholders $ 8,036 $ 7,980 $ 22,637 $ 12,545
Basic earnings per share- Income available to Common stockholders, Shares 17,019 17,069 17,085 17,250
Effect of dilutive securities: Stock options: Shares 203   157 18
Diluted earnings per share- Income available to Common stockholders, Shares 17,222 17,069 17,242 17,268
Basic earnings per share- Income available to Common stockholders, Per share amount $ 0.47 $ 0.47 $ 1.33 $ 0.73
Diluted earnings per share - Income available to Common stockholders, Per share amount $ 0.47 $ 0.47 $ 1.31 $ 0.73