Earnings per common share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net income (loss) - basic and diluted	$ 2,106	$ (2,553)	$ 5,531	$ 226
Denominator
Weighted average shares outstanding - basic ( in shares)	1,495	1,485	1,495	1,485
Weighted average shares outstanding - diluted (in shares)	1,495	1,485	1,495	1,485
Earnings (loss) per share, basic	$ 1.41	$ (1.72)	$ 3.70	$ 0.15
Earnings (loss) per share, diluted	$ 1.41	$ (1.72)	$ 3.70	$ 0.15