Earnings per Share - Components (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic earnings per share:
Net income available to shareholders	$ 3,282	$ 3,520	$ 4,150	$ 8,186
Average shares outstanding	6,485,648	6,525,684	6,497,919	6,525,684
Basic earnings per share (in dollars per share)	$ 0.51	$ 0.54	$ 0.64	$ 1.25
Diluted earnings per share:
Net income available to shareholders	$ 3,282	$ 3,520	$ 4,150	$ 8,186
Average shares outstanding	6,485,648	6,525,684	6,497,919	6,525,684
Effect of dilutive stock options	0	0	0	0
Average shares outstanding including dilutive stock options	6,485,648	6,525,684	6,497,919	6,525,684
Diluted earnings per share (in dollars per share)	$ 0.51	$ 0.54	$ 0.64	$ 1.25