Earnings per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings per share [Abstract]
Net income (loss)	$ 528	$ 901	$ (6,196)	$ (3,218)
Shares [Abstract]
Basic: Weighted average common shares outstanding (in shares)	9,911	9,408	9,902	9,112
Add: Dilutive effect of outstanding options and restricted stock units as determined by the treasury stock method (in shares)	0	438	0	0
Diluted: Weighted average common and common equivalent shares outstanding (in shares)	9,911	9,846	9,902	9,112
Net income (loss) per common share [Abstract]
Basic (in dollars per share)	$ 0.05	$ 0.1	$ (0.63)	$ (0.35)
Diluted (in dollars per share)	$ 0.05	$ 0.09	$ (0.63)	$ (0.35)
Stock Awards [Member]
Earnings per share [Abstract]
Anti-dilutive securities excluded from computation of earnings per dilutive share (in shares)	300	300	1,600	400