Earnings Per Share (Calculation of Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 4,454	$ 3,412	$ 12,903	$ 8,564
Weighted average shares outstanding - Basic (in shares)	12,748,000	12,687,000	12,736,000	12,679,000
Dilutive effect of common stock equivalents-options	13,000	21,000	13,000	21,000
Dilutive effect of common stock equivalents-restricted stock units		8,000		6,000
Weighted average shares outstanding - Diluted (in shares)	12,761,000	12,716,000	12,749,000	12,706,000
Earnings per common share - Basic (in dollars per share)	$ 0.35	$ 0.27	$ 1.01	$ 0.68
Earnings per common share - Diluted (in dollars per share)	$ 0.35	$ 0.27	$ 1.01	$ 0.67
Weighted average common stock excluded from calculation of diluted EPS	0	0	0	0