Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings per common share - basic
Net income	$ 956	$ 802
Average common shares outstanding (in shares)	2,152,358	2,144,808
Basic earnings per common share (in dollars per share)	$ 0.44	$ 0.37
Earnings per common share - diluted
Net income	$ 956	$ 802
Average common shares outstanding (in shares)	2,152,358	2,144,808
Add: Dilutive effects of assumed issuance of restricted stock and exercise of stock options (in shares)	15,656	8,817
Average shares and dilutive potential common shares (in shares)	2,168,014	2,153,625
Diluted earnings per common share (in dollars per share)	$ 0.44	$ 0.37
Stock options not considered in computing earnings per share because they were antidilutive (in shares)	0	67,000