Loss per share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net loss from continuing operations	$ (1,542)	$ (3,187)
Net loss from discontinued operations	0	(3,767)
Net loss	$ (1,542)	$ (6,954)
Denominator:
Weighted average shares used in calculating net loss per share - basic	2,494	2,176
Weighted average shares used in calculating net loss per share - diluted	2,494	2,176
Net gain (loss) per share - basic and diluted
Net loss per share from continuing operations, basic	$ (0.62)	$ (1.46)
Net loss per share from continuing operations, diluted	(0.62)	(1.46)
Net loss per share from discontinued operations Basic	0	(1.73)
Net loss per share from discontinued operations Diluted	0	(1.73)
Basic net loss per share	(0.62)	(3.2)
Diluted net loss per share	$ (0.62)	$ (3.2)