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Revenue - Schedule of Timing of Transfer (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue |  |
Total net sales | $ 97,792 | $ 124,320
Point in time |  |
Disaggregation of Revenue |  |
Total net sales | 73,552 | 95,196
Over time |  |
Disaggregation of Revenue |  |
Total net sales | 24,240 | 29,124
Rail, Technologies, and Services |  |
Disaggregation of Revenue |  |
Total net sales | 54,015 | 82,623
Rail, Technologies, and Services | Point in time |  |
Disaggregation of Revenue |  |
Total net sales | 44,925 | 65,539
Rail, Technologies, and Services | Over time |  |
Disaggregation of Revenue |  |
Total net sales | 9,090 | 17,084
Infrastructure Solutions |  |
Disaggregation of Revenue |  |
Total net sales | 43,777 | 41,697
Infrastructure Solutions | Point in time |  |
Disaggregation of Revenue |  |
Total net sales | 28,627 | 29,657
Infrastructure Solutions | Over time |  |
Disaggregation of Revenue |  |
Total net sales | $ 15,150 | $ 12,040

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