Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic
Net income	$ 8,152	$ 5,077
Undistributed earnings allocated to participating securities	(142)	(52)
Net income allocated to common shares	$ 8,010	$ 5,025
Weighted average common shares outstanding (shares)	15,137,808	15,022,876
Basic earnings per common share (in dollars per share)	$ 0.53	$ 0.33
Diluted
Net income allocated to common shares	$ 8,010	$ 5,025
Weighted average common shares outstanding for basic earnings per common share (shares)	15,137,808	15,022,876
Add: Dilutive effects of assumed exercises of stock options	104,406	46,568
Average shares and dilutive potential common shares (shares)	15,242,214	15,069,444
Diluted earnings per common share (in dollars per share)	$ 0.53	$ 0.33