Segments - Schedule of reporting information by segment (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales		$ 813,067		$ 899,547	$ 761,435
Total operating income		72,405		83,941	49,301
Interest expense, net		(6,349)		(5,731)	(4,208)
Income before income taxes		66,056		78,210	45,093
Total Assets		541,631		542,634	484,549
Capital Additions, net		22,855		24,292	17,867
Depreciation and Amortization		23,099		21,657	20,885
Operating Segments [Member] | Material Handling [Member]
Segment Reporting Information [Line Items]
Net sales		555,259		647,619	564,068
Total operating income	[1]	100,088		104,079	62,187
Total Assets		383,734		385,722	370,499
Capital Additions, net		20,452		22,528	17,173
Depreciation and Amortization		18,917		17,814	17,803
Operating Segments [Member] | Distribution [Member]
Segment Reporting Information [Line Items]
Net sales		257,875		251,966	197,427
Total operating income	[2],[3]	10,967		15,862	15,428
Total Assets		112,323		119,652	88,757
Capital Additions, net		1,666		705	402
Depreciation and Amortization		3,197		2,889	2,208
Inter-company sales [Member]
Segment Reporting Information [Line Items]
Net sales		(67)		(38)	(60)
Corporate [Member]
Segment Reporting Information [Line Items]
Total operating income	[2],[5]	(38,650)	[4]	(36,000)	(28,314)
Total Assets		45,574		37,260	25,293
Capital Additions, net		737		1,059	292
Depreciation and Amortization	[6]	$ 985		$ 954	$ 874

[1] In the year ended December 31, 2023, the Company recognized a $10 million recovery of legal costs within the Material Handling Segment related to a settlement agreement with one of its insurers, as described in Note 9. $6.7 million of these recovered costs were originally incurred prior to 2023.

[2] In the year ended December 31, 2023, the Company recognized $0.7 million of executive severance, of which $0.4 million was recognized in the Distribution Segment related to severance and $0.3 million was recognized in Corporate related to charges for acceleration of stock compensation.

[3] In the year ended December 31, 2022, the Company recognized a $0.6 million impairment loss on an investment in a legacy joint venture within the Distribution Segment as described in Note 1.

[4] Corporate includes $1.3 million of consulting costs to improve the Company's capabilities to screen and execute large acquisitions in addition to $2.6 million of acquisition related costs associated with the Signature acquisition, as described in Note 15, for the year ended December 31, 2023.

[5] The Company recognized $3.2 million, $1.4 million and $0.7 million of expense to the estimated environmental reserve, net of expected insurance recoveries in the years ended December 31, 2023, 2022 and 2021, respectively, as described in Note 9. Environmental charges are not included in segment results and are shown with Corporate.

[6] Corporate depreciation and amortization includes amortization of deferred financing costs of $0.3 million, $0.4 million and $0.5 million in the years ended December 31, 2023, 2022 and 2021, respectively.