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Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

Our consolidated 2025 revenue was derived from contracts to provide service activities in the mechanical and electrical segments we serve. Refer to Note 16 “Segment Information” for additional information on our reportable segments. We disaggregate our revenue from contracts with customers by service provided, customer type and activity type, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. See details in the following tables (dollars in thousands):


			Year Ended December 31,
Revenue by Service Provided			2025						2024						2023
Mechanical Segment			$	6,673,745		73.3	%		$	5,527,604		78.7	%		$	3,946,022		75.8	%
Electrical Segment				2,427,896		26.7	%			1,499,872		21.3	%			1,260,738		24.2	%
Total			$	9,101,641		100.0	%		$	7,027,476		100.0	%		$	5,206,760		100.0	%

			Year Ended December 31,
Revenue by Type of Customer			2025						2024						2023
Technology			$	4,098,854		45.0	%		$	2,331,362		33.2	%		$	1,114,382		21.4	%
Manufacturing				2,011,607		22.1	%			1,919,403		27.3	%			1,751,684		33.6	%
Healthcare				810,646		8.9	%			584,902		8.3	%			554,906		10.6	%
Education				665,266		7.3	%			702,706		10.0	%			493,982		9.5	%
Government				457,329		5.0	%			375,201		5.4	%			301,837		5.8	%
Office Buildings				446,659		5.0	%			424,343		6.0	%			400,754		7.7	%
Retail, Restaurants and Entertainment				337,590		3.7	%			377,302		5.4	%			310,381		6.0	%
Multi-Family and Residential				130,578		1.4	%			142,133		2.0	%			181,780		3.5	%
Other				143,112		1.6	%			170,124		2.4	%			97,054		1.9	%
Total			$	9,101,641		100.0	%		$	7,027,476		100.0	%		$	5,206,760		100.0	%

			Year Ended December 31,
Revenue by Activity Type			2025						2024						2023
New Construction			$	5,752,786		63.2	%		$	3,984,529		56.7	%		$	2,853,239		54.8	%
Existing Building Construction				2,118,363		23.3	%			1,945,093		27.7	%			1,337,023		25.6	%
Service Projects				568,845		6.2	%			468,950		6.7	%			446,151		8.6	%
Service Calls, Maintenance and Monitoring				661,647		7.3	%			628,904		8.9	%			570,347		11.0	%
Total			$	9,101,641		100.0	%		$	7,027,476		100.0	%		$	5,206,760		100.0	%

Schedule of contract assets and liabilities

Contract assets and liabilities in the Consolidated Balance Sheet consisted of the following amounts as of December 31, 2025 and December 31, 2024 (in thousands):


	December 31, 2025			December 31, 2024
Contract assets:
Costs and estimated earnings in excess of billings, less allowance for credit losses	$	88,817		$	91,681
Contract liabilities:
Billings in excess of costs and estimated earnings and deferred revenue	$	2,120,262		$	1,149,257