Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Information

Summary of information about reportable segments

	Mechanical Services		Electrical Services		Corporate		Consolidated
Total Assets at December 31, 2021	$	1,452,527	$	690,364	$	66,223	$	2,209,114
Total Assets at December 31, 2020	$	1,246,098	$	419,475	$	91,782	$	1,757,355

	Year Ended December 31, 2021
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	2,542,623	$	531,013	$	—	$	3,073,636
Gross Profit	$	486,346	$	76,861	$	—	$	563,207
Capital Expenditures	$	19,408	$	2,413	$	509	$	22,330
	Year Ended December 31, 2020
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	2,430,632	$	426,027	$	—	$	2,856,659
Gross Profit	$	513,760	$	33,223	$	—	$	546,983
Capital Expenditures	$	22,561	$	944	$	626	$	24,131
	Year Ended December 31, 2019
	Mechanical Services		Electrical Services		Corporate		Consolidated
Revenue	$	2,272,031	$	343,246	$	—	$	2,615,277
Gross Profit	$	469,347	$	32,596	$	—	$	501,943
Capital Expenditures	$	28,070	$	1,367	$	2,313	$	31,750