Earnings per Share - Components (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic earnings per share:
Net income available to shareholders	$ 868	$ 4,666
Average shares outstanding	6,260,741	6,276,236
Basic earnings per share (in dollars per share)	$ 0.14	$ 0.74
Diluted earnings per share:
Net income available to shareholders	$ 868	$ 4,666
Average shares outstanding	6,260,741	6,276,236
Effect of dilutive stock options	0	0
Average shares outstanding including dilutive stock options	6,260,741	6,276,236
Diluted earnings per share (in dollars per share)	$ 0.14	$ 0.74