Earnings per common share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator
Net income - basic and diluted	$ 1,772	$ 1,540
Denominator
Weighted average shares outstanding - basic ( in shares)	1,493	1,484
Weighted average shares outstanding - diluted (in shares)	1,493	1,484
Earnings per share - basic (in dollars per share)	$ 1.19	$ 1.04
Earnings per share - diluted (in dollars per share)	$ 1.19	$ 1.04