Revenue - Schedule of Disaggregation of Revenue and Schedule of Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 722,405	$ 475,967
United States
Disaggregation of Revenue [Line Items]
Net sales	675,194	419,706
North America (outside of United States)
Disaggregation of Revenue [Line Items]
Net sales	21,270	24,466
Pacific Rim
Disaggregation of Revenue [Line Items]
Net sales	22,309	24,652
Europe
Disaggregation of Revenue [Line Items]
Net sales	3,373	7,090
Other
Disaggregation of Revenue [Line Items]
Net sales	259	53
Power Systems
Disaggregation of Revenue [Line Items]
Net sales	586,347	325,749
Industrial
Disaggregation of Revenue [Line Items]
Net sales	114,768	123,268
Transportation
Disaggregation of Revenue [Line Items]
Net sales	$ 21,290	$ 26,950