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	$ 4,201	$ 3,106	$ 9,652	$ 9,355
Less allocation of earnings and dividends to participating securities	5	2	12	6
Net income allocated to common shareholders	$ 4,196	$ 3,104	$ 9,640	$ 9,349
Weighted average common shares outstanding, gross (in shares)	13,300,463	10,014,840	11,495,650	10,008,845
Less average participating securities (in shares)	15,260	6,033	15,260	6,033
Weighted average number of shares outstanding used in the calculation of basic earnings per common share (in shares)	13,285,203	10,008,807	11,480,390	10,002,812
Add dilutive effect of:
Stock options (in shares)	5,462	6,397	5,661	7,130
Adjusted weighted average number of shares outstanding used in the calculation of diluted earnings per common share (in shares)	13,290,665	10,015,204	11,486,051	10,009,942
Earnings per common share:
Basic (usd per share)	$ 0.32	$ 0.31	$ 0.84	$ 0.93
Diluted (usd per share)	$ 0.32	$ 0.31	$ 0.84	$ 0.93