Business Segments - Schedule of Sales by Major Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Revenue from External Customer
Net sales	$ 530,765	$ 543,744
Rail, Technologies, and Services
Revenue from External Customer
Net sales	326,869	312,160
Infrastructure Solutions
Revenue from External Customer
Net sales	203,896	231,584
Rail Products \| Rail, Technologies, and Services
Revenue from External Customer
Net sales	207,696	205,797
Global Friction Management \| Rail, Technologies, and Services
Revenue from External Customer
Net sales	65,984	63,946
Technology Services and Solutions \| Rail, Technologies, and Services
Revenue from External Customer
Net sales	53,189	42,417
Precast Concrete Products \| Infrastructure Solutions
Revenue from External Customer
Net sales	136,043	136,458
Steel Products \| Infrastructure Solutions
Revenue from External Customer
Net sales	$ 67,853	$ 95,126

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