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Revenue from Customers - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 556,942	$ 463,449	$ 1,477,830	$ 1,180,431
Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	556,942	463,449	1,477,830	1,180,431
E-Infrastructure Solutions Backlog | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	255,530	121,286	658,005	341,601
Transportation Solutions Revenues | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	221,126	249,898	573,006	600,105
Transportation Solutions Revenues | Heavy Highway
Disaggregation of Revenue [Line Items]
Revenues	155,847	188,746	408,216	427,451
Transportation Solutions Revenues | Aviation
Disaggregation of Revenue [Line Items]
Revenues	25,463	35,840	61,980	99,816
Transportation Solutions Revenues | Water Containment and Treatment
Disaggregation of Revenue [Line Items]
Revenues	23,373	11,463	60,377	41,890
Transportation Solutions Revenues | Other
Disaggregation of Revenue [Line Items]
Revenues	16,443	13,849	42,433	30,948
Building Solutions Backlog - Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	80,286	92,265	246,819	238,725
Building Solutions Backlog - Commercial | Residential
Disaggregation of Revenue [Line Items]
Revenues	51,304	65,295	166,045	156,078
Building Solutions Backlog - Commercial | Commercial
Disaggregation of Revenue [Line Items]
Revenues	28,982	26,970	80,774	82,647
Fixed-Unit Price
Disaggregation of Revenue [Line Items]
Revenues	217,296	267,092	554,014	670,526
Lump-Sum
Disaggregation of Revenue [Line Items]
Revenues	287,472	129,742	752,614	348,313
Residential and Other
Disaggregation of Revenue [Line Items]
Revenues	$ 52,174	$ 66,615	$ 171,202	$ 161,592

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