Revenue - Schedule of Sales by Major Product Line (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue
Total net sales	$ 97,792	$ 124,320
Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	54,015	82,623
Precast Concrete Products
Disaggregation of Revenue
Total net sales	28,204	21,091
Steel Products
Disaggregation of Revenue
Total net sales	15,573	20,606
Infrastructure Solutions
Disaggregation of Revenue
Total net sales	43,777	41,697
Rail Products \| Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	29,319	53,038
Global Friction Management \| Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	15,563	14,022
Technology Services and Solutions \| Rail, Technologies, and Services
Disaggregation of Revenue
Total net sales	$ 9,133	$ 15,563

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details