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Segment Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Information

Summary of information about reportable segments


		Mechanical Segment			Electrical Segment			Corporate			Consolidated
Total assets at December 31, 2025		$	3,683,678		$	1,765,570		$	991,921		$	6,441,169
Total assets at December 31, 2024		$	3,162,677		$	985,006		$	563,405		$	4,711,088


		Year Ended December 31, 2025
		Mechanical Segment			Electrical Segment			Corporate			Consolidated
Revenue		$	6,673,745		$	2,427,896		$	—		$	9,101,641
Cost of services			5,101,349			1,804,393			—			6,905,742
Gross profit			1,572,396			623,503			—			2,195,899
Selling, general and administrative expenses			574,344			236,580			72,360			883,284
Gain on sale of assets			(1,433)			(541)			—			(1,974)
Operating income (loss)		$	999,485		$	387,464		$	(72,360)		$	1,314,589
Reconciliation to income before income taxes:
Other income (expense)												(21,136)
Income before income taxes											$	1,293,453

Amortization of identifiable intangible assets		$	54,162		$	25,418		$	—		$	79,580
Depreciation expense		$	50,754		$	10,199		$	1,426		$	62,379
Capital expenditures		$	126,436		$	26,556		$	1,911		$	154,903

		Year Ended December 31, 2024
		Mechanical Segment			Electrical Segment			Corporate			Consolidated
Revenue		$	5,527,604		$	1,499,872		$	—		$	7,027,476
Cost of services			4,413,108			1,137,957			—			5,551,065
Gross profit			1,114,496			361,915			—			1,476,411
Selling, general and administrative expenses			499,441			170,155			60,476			730,072
Gain on sale of assets			(1,813)			(1,217)			—			(3,030)
Operating income (loss)		$	616,868		$	192,977		$	(60,476)		$	749,369
Reconciliation to income before income taxes:
Other income (expense)												(82,808)
Income before income taxes											$	666,561

Amortization of identifiable intangible assets		$	74,873		$	22,393		$	—		$	97,266
Depreciation expense		$	39,601		$	7,450		$	1,168		$	48,219
Capital expenditures		$	80,957		$	26,850		$	3,264		$	111,071

		Year Ended December 31, 2023
		Mechanical Segment			Electrical Segment			Corporate			Consolidated
Revenue		$	3,946,022		$	1,260,738		$	—		$	5,206,760
Cost of services			3,195,916			1,020,335			—			4,216,251
Gross profit			750,106			240,403			—			990,509
Selling, general and administrative expenses			394,657			129,623			50,143			574,423
Gain on sale of assets			(1,715)			(587)			—			(2,302)
Operating income (loss)		$	357,164		$	111,367		$	(50,143)		$	418,388
Reconciliation to income before income taxes:
Other income (expense)												(30,194)
Income before income taxes											$	388,194

Amortization of identifiable intangible assets		$	17,619		$	25,785		$	—		$	43,404
Depreciation expense		$	30,850		$	6,576		$	736		$	38,162
Capital expenditures		$	82,449		$	9,600		$	2,789		$	94,838