Revenue - Timing of Transfer (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue
Net Sales	$ 543,744	$ 497,497
Point in time
Disaggregation of Revenue
Net Sales	395,024	361,587
Over time
Disaggregation of Revenue
Net Sales	148,720	135,910
Rail, Technologies, and Services
Disaggregation of Revenue
Net Sales	312,160	300,592
Rail, Technologies, and Services | Point in time
Disaggregation of Revenue
Net Sales	254,345	241,759
Rail, Technologies, and Services | Over time
Disaggregation of Revenue
Net Sales	57,815	58,833
Infrastructure Solutions
Disaggregation of Revenue
Net Sales	231,584	196,905
Infrastructure Solutions | Point in time
Disaggregation of Revenue
Net Sales	140,679	119,828
Infrastructure Solutions | Over time
Disaggregation of Revenue
Net Sales	$ 90,905	$ 77,077