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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Disaggregation of Revenue |  |
Revenue | $ 885,216 | $ 669,761
Percentage of revenue from contract with customer (as a percent) | 100.00% | 100.00%
Industrial |  |
Disaggregation of Revenue |  |
Revenue | $ 410,184 | $ 269,583
Percentage of revenue from contract with customer (as a percent) | 46.30% | 40.30%
Education |  |
Disaggregation of Revenue |  |
Revenue | $ 89,446 | $ 92,457
Percentage of revenue from contract with customer (as a percent) | 10.10% | 13.80%
Office Buildings |  |
Disaggregation of Revenue |  |
Revenue | $ 75,115 | $ 78,996
Percentage of revenue from contract with customer (as a percent) | 8.50% | 11.80%
Healthcare |  |
Disaggregation of Revenue |  |
Revenue | $ 134,795 | $ 95,091
Percentage of revenue from contract with customer (as a percent) | 15.20% | 14.20%
Government |  |
Disaggregation of Revenue |  |
Revenue | $ 57,465 | $ 43,165
Percentage of revenue from contract with customer (as a percent) | 6.50% | 6.40%
Retail, Restaurants and Entertainment |  |
Disaggregation of Revenue |  |
Revenue | $ 65,582 | $ 44,576
Percentage of revenue from contract with customer (as a percent) | 7.40% | 6.70%
Multi-Family and Residential |  |
Disaggregation of Revenue |  |
Revenue | $ 24,442 | $ 24,660
Percentage of revenue from contract with customer (as a percent) | 2.80% | 3.70%
Other |  |
Disaggregation of Revenue |  |
Revenue | $ 28,187 | $ 21,233
Percentage of revenue from contract with customer (as a percent) | 3.20% | 3.10%
New Construction |  |
Disaggregation of Revenue |  |
Revenue | $ 429,418 | $ 302,061
Percentage of revenue from contract with customer (as a percent) | 48.50% | 45.10%
Existing Building Construction |  |
Disaggregation of Revenue |  |
Revenue | $ 259,285 | $ 216,601
Percentage of revenue from contract with customer (as a percent) | 29.30% | 32.30%
Service Projects |  |
Disaggregation of Revenue |  |
Revenue | $ 76,252 | $ 60,060
Percentage of revenue from contract with customer (as a percent) | 8.60% | 9.00%
Service Calls, Maintenance and Monitoring |  |
Disaggregation of Revenue |  |
Revenue | $ 120,261 | $ 91,039
Percentage of revenue from contract with customer (as a percent) | 13.60% | 13.60%
Mechanical Services |  |
Disaggregation of Revenue |  |
Revenue | $ 682,511 | $ 565,620
Percentage of revenue from contract with customer (as a percent) | 77.10% | 84.50%
Electrical Services |  |
Disaggregation of Revenue |  |
Revenue | $ 202,705 | $ 104,141
Percentage of revenue from contract with customer (as a percent) | 22.90% | 15.50%

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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