Segments - Schedule of reporting information by segment (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net sales		$ 215,739	$ 225,486
Total operating income		18,957	24,405
Interest expense, net		(1,646)	(1,147)
Income before income taxes		17,311	23,258
Operating Segments [Member] | Material Handling [Member]
Segment Reporting Information [Line Items]
Net sales		152,562	176,636
Total operating income		25,351	31,220
Operating Segments [Member] | Distribution [Member]
Segment Reporting Information [Line Items]
Net sales		63,185	48,861
Total operating income		2,237	3,301
Inter-company sales [Member]
Segment Reporting Information [Line Items]
Net sales		(8)	(11)
Corporate [Member]
Segment Reporting Information [Line Items]
Total operating income	[1]	$ (8,631)	$ (10,116)

[1] (1) The company recognized $0.5 million and $0.7 million of expense to the estimated environmental reserve, net of probable insurance recoveries in the three months ended March 31, 2023 and 2022, respectively, as described in Note 10. Environmental charges are not included in segment results and are shown with Corporate.