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v3.23.1

Goodwill and Identifiable Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 31, 2023
Goodwill and Identifiable Intangible Assets, Net |
Schedule of changes in the carrying amount of goodwill | The changes in the carrying amount of goodwill are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Mechanical Services | ​ | Electrical Services | ​ | ​ | ​
​ |  | Segment |  | Segment | ​ | Total |
Balance at December 31, 2021 | ​ | $ | 361,320 | ​ | $ | 230,794 | ​ | $ | 592,114 | ​
Acquisitions and purchase price adjustments (See Note 5) | ​ |  | 2,609 | ​ | ​ | 17,066 | ​ | ​ | 19,675 | ​
Balance at December 31, 2022 | ​ | ​ | 363,929 | ​ | ​ | 247,860 | ​ | ​ | 611,789 | ​
Acquisitions and purchase price adjustments (See Note 5) | ​ | ​ | — | ​ | ​ | 25,645 | ​ | ​ | 25,645 | ​
Balance at March 31, 2023 | ​ | $ | 363,929 | ​ | $ | 273,505 | ​ | $ | 637,434 | ​
​
Schedule of future amortization expense of identifiable intangible assets | At March 31, 2023, future amortization expense of identifiable intangible assets is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​
Year ending December 31— |  | ​ |  | ​
2023 (remainder of the year) | ​ | $ | 32,256 | ​
2024 | ​ |  | 37,006 | ​
2025 | ​ |  | 34,525 | ​
2026 | ​ |  | 33,681 | ​
2027 | ​ | ​ | 31,699 | ​
Thereafter | ​ |  | 126,903 | ​
Total | ​ | $ | 296,070 | ​

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