Earnings Per Share (Calculation of Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income from continuing operations	$ 4,214			$ 4,256			$ 12,270	$ 11,910
Net (loss) income from discontinued operations	(8)			198			(86)	993
Net Income	$ 4,206	$ 4,224	$ 3,754	$ 4,454	$ 4,391	$ 4,058	$ 12,184	$ 12,903
Weighted average shares outstanding - Basic (in shares)	12,764,000			12,748,000			12,771,000	12,736,000
Dilutive effect of common stock equivalents-options	5,000			13,000			5,000	13,000
Weighted average shares outstanding - Diluted (in shares)	12,769,000			12,761,000			12,776,000	12,749,000
Income from continuing operations	$ 0.33			$ 0.33			$ 0.96	$ 0.93
(Loss) income from discontinued operations				0.02			(0.01)	0.08
Income (loss) per common share - basic	0.33			0.35			0.95	1.01
Income from continuing operations	0.33			0.33			0.96	0.93
(Loss) income from discontinued operations				0.02			(0.01)	0.08
Income (loss) per common share - diluted	$ 0.33			$ 0.35			$ 0.95	$ 1.01
Weighted average common stock excluded from calculation of diluted EPS	0			0			0	0