Business Segments - Schedule of Asset Reportable Segment (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Segment Reporting | |||||
| Depreciation/Amortization | $ 2,752 | $ 3,107 | $ 5,647 | $ 6,534 | |
| Expenditures for Long-Lived Assets | 3,561 | 2,673 | 6,521 | 5,248 | |
| Assets | 334,155 | 334,155 | $ 330,372 | ||
| Operating Segments | |||||
| Segment Reporting | |||||
| Depreciation/Amortization | 2,395 | 2,592 | 4,767 | 5,524 | |
| Expenditures for Long-Lived Assets | 2,989 | 2,085 | 5,222 | 4,550 | |
| Assets | 285,415 | 285,415 | 284,041 | ||
| Corporate | |||||
| Segment Reporting | |||||
| Depreciation/Amortization | 357 | 515 | 880 | 1,010 | |
| Expenditures for Long-Lived Assets | 572 | 588 | 1,299 | 698 | |
| Assets | 48,740 | 48,740 | 46,331 | ||
| Rail, Technologies, and Services | Operating Segments | |||||
| Segment Reporting | |||||
| Depreciation/Amortization | 677 | 913 | 1,370 | 2,081 | |
| Expenditures for Long-Lived Assets | 412 | 628 | 686 | 1,055 | |
| Assets | 145,631 | 145,631 | 155,552 | ||
| Infrastructure Solutions | Operating Segments | |||||
| Segment Reporting | |||||
| Depreciation/Amortization | 1,718 | 1,679 | 3,397 | 3,443 | |
| Expenditures for Long-Lived Assets | 2,577 | $ 1,457 | 4,536 | $ 3,495 | |
| Assets | $ 139,784 | $ 139,784 | $ 128,489 | ||
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expenditure for addition to long-lived asset included in determination of segment asset by chief operating decision maker (CODM) or otherwise regularly provided to CODM. Long-lived asset excludes financial instrument, long-term customer relationship of financial institution, mortgage and other servicing rights, deferred policy acquisition cost, and deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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