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Earnings Per Share (Calculation of Earnings Per Common Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Earnings Per Share [Abstract]                
Net income from continuing operations $ 3,391     $ 4,214     $ 11,844 $ 12,270
Net loss from discontinued operations       (8)       (86)
Net Income $ 3,391 $ 5,335 $ 3,118 $ 4,206 $ 4,224 $ 3,754 $ 11,844 $ 12,184
Weighted average shares outstanding - Basic (in shares) 12,483     12,764     12,507 12,771
Dilutive effect of common stock equivalents-options 1     5     2 5
Weighted average shares outstanding - Diluted (in shares) 12,484     12,769     12,509 12,776
Income from continuing operations $ 0.27     $ 0.33     $ 0.95 $ 0.96
Loss from discontinued operations               (0.01)
Net income 0.27     0.33     0.95 0.95
Income from continuing operations 0.27     0.33     0.95 0.96
Loss from discontinued operations               (0.01)
Net income $ 0.27     $ 0.33     $ 0.95 $ 0.95
Weighted average common stock excluded from calculation of diluted EPS 0     0     0 0