Revenue - Disaggregation of Revenue and Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total	$ 458,973	$ 481,333
United States
Disaggregation of Revenue [Line Items]
Total	378,886	349,488
North America (outside of United States)
Disaggregation of Revenue [Line Items]
Total	21,265	16,437
Pacific Rim
Disaggregation of Revenue [Line Items]
Total	39,822	80,681
Europe
Disaggregation of Revenue [Line Items]
Total	13,815	18,452
Other
Disaggregation of Revenue [Line Items]
Total	5,185	16,275
Power Systems
Disaggregation of Revenue [Line Items]
Total	225,106	179,491
Industrial
Disaggregation of Revenue [Line Items]
Total	160,334	224,669
Transportation
Disaggregation of Revenue [Line Items]
Total	$ 73,533	$ 77,173