Segment Information (Tables)

3 Months Ended

Mar. 31, 2025

Segment Information

Summary of information about reportable segments

The following tables present information about our reportable segments (in thousands):

	Mechanical Segment		Electrical Segment		Corporate		Consolidated
Total assets at March 31, 2025	$	3,326,612	$	1,031,571	$	211,035	$	4,569,218
Total assets at December 31, 2024	$	3,162,677	$	985,006	$	563,405	$	4,711,088
	Three Months Ended March 31, 2025
	Mechanical Segment		Electrical Segment		Corporate		Consolidated
Revenue	$	1,402,215	$	429,071	$	—	$	1,831,286
Cost of services		1,097,696		330,174		—		1,427,870
Gross profit		304,519		98,897		—		403,416
Selling, general and administrative expenses		132,270		44,046		18,558		194,874
Gain on sale of assets		(352)		(204)		—		(556)
Operating income	$	172,601	$	55,055	$	(18,558)	$	209,098
Amortization of identifiable intangible assets	$	14,590	$	5,525	$	—	$	20,115
Depreciation expense	$	11,404	$	2,303	$	303	$	14,010
Capital expenditures	$	18,419	$	3,539	$	250	$	22,208

	Three Months Ended March 31, 2024
	Mechanical Segment		Electrical Segment		Corporate		Consolidated
Revenue	$	1,185,009	$	352,007	$	—	$	1,537,016
Cost of services		967,297		272,356		—		1,239,653
Gross profit		217,712		79,651		—		297,363
Selling, general and administrative expenses		110,982		33,880		17,861		162,723
Gain on sale of assets		(574)		(246)		—		(820)
Operating income	$	107,304	$	46,017	$	(17,861)	$	135,460
Amortization of identifiable intangible assets	$	18,094	$	5,819	$	—	$	23,913
Depreciation expense	$	9,228	$	1,720	$	306	$	11,254
Capital expenditures	$	19,942	$	4,379	$	631	$	24,952