Shareholders' Equity and Earnings Per Common Share - Earnings Per Common Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Components of earnings per share calculations
Net income	$ 3,144	$ 3,477	$ 10,311	$ 10,223
Weighted average number of common shares used in earnings per common share – basic (in shares)	3,456,901	3,392,480	3,452,426	3,400,296
Effect of dilutive securities:
Stock option awards and warrant	1,898		1,465	141
Weighted average number of common shares used in earnings per common share – assuming dilution	3,458,799	3,392,480	3,453,891	3,400,437