Segment Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment			3
Revenues	$ 560,347	$ 493,040	$ 1,486,251	$ 1,320,829
Operating Income	57,137	49,475	150,027	122,827
Acquisition related costs	(103)	(77)	(352)	(562)
Operating Segments
Segment Reporting Information [Line Items]
Revenues	560,347	493,040	1,486,251	1,320,829
Operating Income	63,280	56,557	168,059	141,628
Corporate G&A Expense
Segment Reporting Information [Line Items]
Operating Income	(6,040)	(7,005)	(17,680)	(18,239)
E-Infrastructure Solutions Revenues \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	253,948	255,530	719,936	658,005
Operating Income	35,945	37,533	103,381	91,642
Transportation Solutions Revenues \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	192,996	157,224	455,223	416,005
Operating Income	14,487	9,700	29,649	21,553
Building Solutions Revenues \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	113,403	80,286	311,092	246,819
Operating Income	$ 12,848	$ 9,324	$ 35,029	$ 28,433

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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