Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill
Goodwill, beginning balance	$ 32,587	$ 30,733
Acquisitions		1,336
Cougar purchase accounting adjustment	(445)
Foreign currency translation impact	(235)	518
Goodwill, ending balance	31,907	32,587
Rail, Technologies, and Services
Goodwill
Goodwill, beginning balance	20,466	19,948
Acquisitions		0
Cougar purchase accounting adjustment	0
Foreign currency translation impact	(235)	518
Goodwill, ending balance	20,231	20,466
Infrastructure Solutions
Goodwill
Goodwill, beginning balance	12,121	10,785
Acquisitions		1,336
Cougar purchase accounting adjustment	(445)
Foreign currency translation impact	0	0
Goodwill, ending balance	$ 11,676	$ 12,121