Earnings Per Share (Calculation of Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income	$ 3,412	$ 2,411	$ 8,564	$ 7,143
Weighted average shares outstanding - Basic (in shares)	12,687,000	12,661,000	12,679,000	12,648,000
Dilutive effect of common stock equivalents-options	21,000		21,000
Dilutive effect of common stock equivalents-restricted stock units	8,000	15,000	6,000	15,000
Weighted average shares outstanding - Diluted (in shares)	12,716,000	12,676,000	12,706,000	12,663,000
Earnings per common share - Basic (in dollars per share)	$ 0.27	$ 0.19	$ 0.68	$ 0.56
Earnings per common share - Diluted (in dollars per share)	$ 0.27	$ 0.19	$ 0.67	$ 0.56
Weighted average common stock excluded from calculation of diluted EPS	0	0	0	0