Net Income per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income	$ 4,097	$ 3,392	$ 8,104	$ 6,549
Weighted average shares issued (in shares)	16,950,564	16,899,968	16,948,810	16,895,135
Add: dilutive effect of stock options (in shares)	31,141	57,314	28,414	40,776
Weighted average shares outstanding adjusted for potential dilution (in shares)	16,981,705	16,957,282	16,977,224	16,935,911
Basic earnings per share (in dollars per share)	$ 0.24	$ 0.20	$ 0.48	$ 0.39
Diluted earnings per share (in dollars per share)	$ 0.24	$ 0.20	$ 0.48	$ 0.39
Anti-dilutive stock options excluded from earnings per share calculation (in shares)	60,000	30,000	60,000	103,000