Change in accounting principle, Effect of Change on Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 528	$ 901	$ (6,196)	$ (3,218)
Comprehensive income (loss)	$ 323	924	$ (6,451)	(3,110)
Previously Reported [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)		910		(3,410)
Comprehensive income (loss)		933		(3,302)
Effect of Change [Member] | Change in Method of Inventory Valuation to Average Costing [Member]
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)		(9)		192
Comprehensive income (loss)		$ (9)		$ 192