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REVENUE FROM CUSTOMERS - Schedule of Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 614,468	$ 582,822	$ 1,045,417	$ 1,023,182
Road and Highway Builders, LLC
Disaggregation of Revenue [Line Items]
Revenues	61,321	73,947	104,767	112,411
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	323,186	274,701	547,374	498,862
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	200,034	221,297	326,596	352,158
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	91,248	86,824	171,447	172,162
Transportation Solutions Revenues | Road and Highway Builders, LLC
Disaggregation of Revenue [Line Items]
Revenues		73,947		112,411
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	133,109	161,863	220,307	255,240
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	15,797	22,634	27,308	40,774
Transportation Solutions Revenues | Other Services
Disaggregation of Revenue [Line Items]
Revenues	47,891	48,278	69,843	85,730
Building Solutions Revenues | Residential
Disaggregation of Revenue [Line Items]
Revenues	91,812	84,682	168,578	168,451
Building Solutions Revenues | Commercial
Disaggregation of Revenue [Line Items]
Revenues	15,453	24,053	30,712	47,199
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues			1,045,417
Operating Segments | E-Infrastructure Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	310,406	241,312	528,669	425,788
Operating Segments | Transportation Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	196,797	232,775	317,458	381,744
Operating Segments | Building Solutions Revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 107,265	$ 108,735	$ 199,290	$ 215,650

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