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Revenue from Customers - Revenue Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 440,360 | $ 403,579
Lump-Sum |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 224,161 | 112,863
Fixed-Unit Price |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 130,861 | 236,699
Residential and Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 85,338 | 54,017
Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 440,360 |
E-Infrastructure Solutions Revenues | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 184,476 | 205,840
Transportation Solutions Revenues | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 148,969 | 111,139
Transportation Solutions Revenues | Heavy Highway |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 93,377 | 67,266
Transportation Solutions Revenues | Aviation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 18,140 | 13,436
Transportation Solutions Revenues | Other Services |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 37,452 | 30,437
Building Solutions Revenues | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 106,915 | 86,600
Building Solutions Revenues | Residential |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 83,769 | 53,714
Building Solutions Revenues | Commercial |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 23,146 | $ 32,886

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