Net Income per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 2,271	$ 4,173	$ 7,038	$ 12,276
Weighted average shares issued (in shares)	16,977,239	16,953,744	16,975,648	16,950,474
Add: dilutive effect of stock options (in shares)	23,262	36,418	17,532	31,145
Weighted average shares outstanding adjusted for potential dilution (in shares)	17,000,501	16,990,162	16,993,180	16,981,619
Basic earnings per share (in dollars per share)	$ 0.13	$ 0.25	$ 0.41	$ 0.72
Diluted earnings per share (in dollars per share)	$ 0.13	$ 0.25	$ 0.41	$ 0.72
Anti-dilutive stock options excluded from earnings per share calculation (in shares)	75,000	60,000	88,000	60,000