Business Segments - Schedule of Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Segment Reporting Information
Assets	$ 344,544	$ 312,401
Operating Segments | Rail, Technologies, and Services
Segment Reporting Information
Assets	157,097	156,638
Operating Segments | Infrastructure Solutions
Segment Reporting Information
Assets	130,052	130,247
Unallocated corporate assets
Segment Reporting Information
Assets	$ 57,395	$ 25,516