Earnings per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings per common share - basic
Net income	$ 1,413	$ 1,041	$ 2,775	$ 1,997
Average common shares outstanding (in shares)	2,271,139	2,164,747	2,271,139	2,158,587
Basic earnings per common share (in dollars per share)	$ 0.62	$ 0.48	$ 1.22	$ 0.93
Earnings per common share - diluted
Net income	$ 1,413	$ 1,041	$ 2,775	$ 1,997
Average common shares outstanding (in shares)	2,271,139	2,164,747	2,271,139	2,158,587
Add: Dilutive effects of assumed issuance of restricted stock and exercise of stock options (in shares)	17,090	18,014	15,663	16,936
Average shares and dilutive potential common shares (in shares)	2,288,229	2,182,761	2,286,802	2,175,523
Diluted earnings per common share (in dollars per share)	$ 0.62	$ 0.48	$ 1.21	$ 0.92