Business Segments - Schedule of Asset Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information
Segment Assets	$ 334,550	$ 312,401
Depreciation/Amortization	14,080	15,263
Expenditures for Long-Lived Assets	9,791	4,513
Operating Segments
Segment Reporting Information
Segment Assets	282,614	286,885
Depreciation/Amortization	12,210	13,434
Expenditures for Long-Lived Assets	8,398	3,514
Corporate
Segment Reporting Information
Segment Assets	51,936	25,516
Depreciation/Amortization	1,870	1,829
Expenditures for Long-Lived Assets	1,393	999
Rail, Technologies, and Services | Operating Segments
Segment Reporting Information
Segment Assets	158,859	156,638
Depreciation/Amortization	4,793	5,172
Expenditures for Long-Lived Assets	2,032	1,165
Infrastructure Solutions | Operating Segments
Segment Reporting Information
Segment Assets	123,755	130,247
Depreciation/Amortization	7,417	8,262
Expenditures for Long-Lived Assets	$ 6,366	$ 2,349