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Revenue from Customers - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 403,579	$ 365,962
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	112,863	125,422
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	236,699	184,757
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	54,017	55,783
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	403,579	365,962
E-Infrastructure Solutions RPOs | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	205,840	168,927
Transportation Solutions Revenues | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	111,139	116,141
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	67,266	88,213
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	13,436	17,195
Transportation Solutions Revenues | Other Non-Highway Services
Disaggregation of Revenue [Line Items]
Revenues	30,437	10,733
Building Solutions RPOs - Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	86,600	80,894
Building Solutions RPOs - Commercial | Residential
Disaggregation of Revenue [Line Items]
Revenues	53,714	54,270
Building Solutions RPOs - Commercial | Commercial
Disaggregation of Revenue [Line Items]
Revenues	$ 32,886	$ 26,624

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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