Segment Information - Financial Data by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Sales to external customers	$ 43,333	$ 43,525
Operating income	1,371	2,968
Interest expense, net	305	221
Other (income) expense, net	(2)	77
Consolidated income before income taxes	1,068	2,670
Assets	153,077		$ 144,439
United States Segment
Sales to external customers	35,741	36,048
Operating income	811	2,133
Assets	134,291		125,521
Canada Segment
Sales to external customers	3,615	3,333
Operating income	386	370
Assets	9,327		9,100
Europe Segment
Sales to external customers	3,977	4,144
Operating income	174	$ 465
Assets	$ 9,459		$ 9,818