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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Mar. 31, 2024
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 |  | 2024 | ​ |  | 2023 | ​ |
Mechanical Segment | ​ | $ | 1,185,009 |  | 77.1 | % | ​ | $ | 918,615 |  | 78.2 | % | ​
Electrical Segment | ​ | ​ | 352,007 | ​ | 22.9 | % | ​ | ​ | 256,025 | ​ | 21.8 | % | ​
Total | ​ | $ | 1,537,016 | ​ | 100.0 | % | ​ | $ | 1,174,640 | ​ | 100.0 | % | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​ | ​
Revenue by Type of Customer | ​ | 2024 | ​ | ​ | 2023 |  | ​
Manufacturing | ​ | $ | 461,400 | ​ | 30.0 | % | ​ | $ | 366,356 | ​ | 31.2 | % | ​
Technology | ​ | ​ | 464,814 | ​ | 30.2 | % | ​ | ​ | 226,249 | ​ | 19.3 | % | ​
Healthcare | ​ | ​ | 133,729 | ​ | 8.7 | % | ​ | ​ | 159,815 | ​ | 13.5 | % | ​
Education | ​ | ​ | 133,983 | ​ | 8.7 | % | ​ | ​ | 110,253 | ​ | 9.4 | % | ​
Office Buildings | ​ | ​ | 101,892 | ​ | 6.6 | % | ​ | ​ | 98,195 | ​ | 8.4 | % | ​
Retail, Restaurants and Entertainment | ​ | ​ | 80,585 | ​ | 5.2 | % | ​ | ​ | 76,194 | ​ | 6.5 | % | ​
Government | ​ | ​ | 87,801 | ​ | 5.7 | % | ​ | ​ | 64,415 | ​ | 5.5 | % | ​
Multi-Family and Residential | ​ | ​ | 40,851 | ​ | 2.7 | % | ​ | ​ | 45,007 | ​ | 3.8 | % | ​
Other | ​ | ​ | 31,961 | ​ | 2.2 | % | ​ | ​ | 28,156 | ​ | 2.4 | % | ​
Total | ​ | $ | 1,537,016 | ​ | 100.0 | % | ​ | $ | 1,174,640 | ​ | 100.0 | % | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​ | ​
Revenue by Activity Type | ​ | 2024 | ​ | ​ | 2023 |  | ​
New Construction | ​ | $ | 898,976 | ​ | 58.5 | % | ​ | $ | 627,952 | ​ | 53.5 | % | ​
Existing Building Construction | ​ | ​ | 390,369 | ​ | 25.4 | % | ​ | ​ | 309,483 | ​ | 26.3 | % | ​
Service Projects | ​ | ​ | 104,114 | ​ | 6.8 | % | ​ | ​ | 103,105 | ​ | 8.8 | % | ​
Service Calls, Maintenance and Monitoring | ​ | ​ | 143,557 | ​ | 9.3 | % | ​ | ​ | 134,100 | ​ | 11.4 | % | ​
Total | ​ | $ | 1,537,016 | ​ | 100.0 | % | ​ | $ | 1,174,640 | ​ | 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, 2024 and December 31, 2023 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​
​ | March 31, 2024 | ​ | December 31, 2023
Contract assets: | ​ | ​ | ​ | ​ | ​
Costs and estimated earnings in excess of billings, less allowance for credit losses | $ | 30,118 | ​ | $ | 28,084
Contract liabilities: | ​ | ​ | ​ | ​ | ​
Billings in excess of costs and estimated earnings and deferred revenue | $ | 1,131,928 | ​ | $ | 909,538

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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