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Revenue from Customers - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 410,320	$ 315,316
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	410,320	315,316
E-Infrastructure Solutions Backlog | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	168,927	96,572
Transportation Solutions Revenues | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	160,499	147,054
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	112,745	99,516
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	17,583	27,222
Transportation Solutions Revenues | Water Containment and Treatment
Disaggregation of Revenue [Line Items]
Revenues	19,887	14,219
Transportation Solutions Revenues | Other
Disaggregation of Revenue [Line Items]
Revenues	10,284	6,097
Building Solutions Backlog - Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	80,894	71,690
Building Solutions Backlog - Commercial | Residential
Disaggregation of Revenue [Line Items]
Revenues	54,270	44,174
Building Solutions Backlog - Commercial | Commercial
Disaggregation of Revenue [Line Items]
Revenues	26,624	27,516
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	156,310	177,547
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	197,868	91,155
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	$ 56,142	$ 46,614

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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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