Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2023

Revenue from Contracts with Customers

Schedule of disaggregation of revenue

See details in the following tables (dollars in thousands):

	Three Months Ended March 31,
Revenue by Service Provided	2023				2022
Mechanical Services	$	918,615	78.2	%	$	682,511	77.1	%
Electrical Services		256,025	21.8	%		202,705	22.9	%
Total	$	1,174,640	100.0	%	$	885,216	100.0	%
	Three Months Ended March 31,
Revenue by Type of Customer	2023				2022
Manufacturing	$	366,356	31.2	%	$	314,729	35.5	%
Technology		226,249	19.3	%		95,455	10.8	%
Healthcare		159,815	13.5	%		134,795	15.2	%
Education		110,253	9.4	%		89,446	10.1	%
Office Buildings		98,195	8.4	%		75,115	8.5	%
Retail, Restaurants and Entertainment		76,194	6.5	%		65,582	7.4	%
Government		64,415	5.5	%		57,465	6.5	%
Multi-Family and Residential		45,007	3.8	%		24,442	2.8	%
Other		28,156	2.4	%		28,187	3.2	%
Total	$	1,174,640	100.0	%	$	885,216	100.0	%
	Three Months Ended March 31,
Revenue by Activity Type	2023				2022
New Construction	$	627,952	53.5	%	$	429,418	48.5	%
Existing Building Construction		309,483	26.3	%		259,285	29.3	%
Service Projects		103,105	8.8	%		76,252	8.6	%
Service Calls, Maintenance and Monitoring		134,100	11.4	%		120,261	13.6	%
Total	$	1,174,640	100.0	%	$	885,216	100.0	%

Schedule of contract assets and liabilities

Contract assets and liabilities in the Consolidated Balance Sheet consisted of the following amounts as of March 31, 2023 and December 31, 2022 (in thousands):

	March 31, 2023		December 31, 2022
Contract assets:
Costs and estimated earnings in excess of billings, less allowance for credit losses	$	26,820	$	27,211
Contract liabilities:
Billings in excess of costs and estimated earnings and deferred revenue	$	717,294	$	548,293