Segment Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) customer segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Information
Number of reportable segments | segment	2
Total Assets	$ 3,305,579	$ 2,597,478
Revenue	5,206,760	4,140,364	$ 3,073,636
Gross Profit	990,509	741,608	563,207
Capital Expenditures	$ 94,838	48,359	22,330
Revenue from Contract with Customer Benchmark | Customer concentration
Segment Information
Number of Customers | customer	1
Revenue from Contract with Customer Benchmark | Customer concentration | Customer One
Segment Information
Single customer, percentage of revenue	14.00%
Operating | Mechanical Segment
Segment Information
Total Assets	$ 2,180,021	1,741,135
Revenue	3,946,022	3,178,475	2,542,623
Gross Profit	750,106	580,619	486,346
Capital Expenditures	82,449	43,532	19,408
Operating | Electrical Segment
Segment Information
Total Assets	901,025	790,040
Revenue	1,260,738	961,889	531,013
Gross Profit	240,403	160,989	76,861
Capital Expenditures	9,600	4,101	2,413
Corporate & Eliminations
Segment Information
Total Assets	224,533	66,303
Capital Expenditures	$ 2,789	$ 726	$ 509