Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill
Goodwill, beginning balance	$ 30,733
Foreign currency translation impact	130
Goodwill, ending balance	30,863
Rail, Technologies, and Services
Goodwill
Goodwill, beginning balance	19,948
Foreign currency translation impact	130
Goodwill, ending balance	20,078
Precast Concrete Products
Goodwill
Goodwill, beginning balance	10,785
Foreign currency translation impact	0
Goodwill, ending balance	10,785
Steel Products and Measurement
Goodwill
Goodwill, beginning balance	0
Foreign currency translation impact	0
Goodwill, ending balance	$ 0