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Revenue from Customers - Summary of Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 593,741	$ 560,347	$ 1,616,923	$ 1,486,251
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	292,365	291,149	791,227	822,663
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	226,969	190,170	579,127	454,359
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	74,407	79,028	246,569	209,229
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	169,388	146,864	424,628	327,440
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	22,964	18,948	63,738	50,694
Transportation Solutions Revenues | Other Services
Disaggregation of Revenue [Line Items]
Revenues	34,899	27,184	120,629	77,089
Building Solutions Revenues | Residential
Disaggregation of Revenue [Line Items]
Revenues	70,374	77,866	238,825	204,993
Building Solutions Revenues | Commercial
Disaggregation of Revenue [Line Items]
Revenues	32,217	35,537	79,416	106,099
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	593,741		1,616,923
Operating Segments | E-Infrastructure Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	263,899	253,948	689,687	719,936
Operating Segments | Transportation Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	227,251	192,996	608,995	455,223
Operating Segments | Building Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 102,591	$ 113,403	$ 318,241	$ 311,092

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