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Acquisitions - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Jul. 29, 2024 | Dec. 31, 2023 | Aug. 23, 2023 | Mar. 31, 2023 | Jan. 10, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |  |
Right-of-use assets from operating leases | $ 24,690 |  | $ 16,256 |  |  |  |
Goodwill | 220,026 |  | $ 211,326 |  |  |  | $ 183,197
EnviroCare International [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Current assets |  | $ 3,111 |  |  |  |  |
Property and equipment |  | 17 |  |  |  |  |
Intangible - finite life |  | 7,250 |  |  |  |  |
Goodwill | $ 7,600 | 7,579 |  |  |  |  |
Total assets acquired |  | 17,957 |  |  |  |  |
Current liabilities assumed |  | (4,949) |  |  |  |  |
Net assets acquired |  | $ 13,008 |  |  |  |  |
Kemco Systems Co Llc [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Current assets |  |  |  | $ 8,902 |  |  |
Property and equipment |  |  |  | 341 |  |  |
Right-of-use assets from operating leases |  |  |  | 1,602 |  |  |
Intangible - finite life |  |  |  | 11,610 |  |  |
Goodwill |  |  |  | 11,115 |  |  |
Other Assets |  |  |  | 16 |  |  |
Total assets acquired |  |  |  | 33,586 |  |  |
Current liabilities assumed |  |  |  | (6,853) |  |  |
Other liabilities Assumed |  |  |  | (404) |  |  |
Net assets acquired |  |  |  | $ 26,329 |  |  |
Transcend Solution [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Current assets |  |  |  |  | $ 2,614 |  |
Property and equipment |  |  |  |  | 1,153 |  |
Intangible - finite life |  |  |  |  | 8,930 |  |
Goodwill |  |  |  |  | 10,839 |  |
Other Assets |  |  |  |  | 231 |  |
Total assets acquired |  |  |  |  | 23,767 |  |
Current liabilities assumed |  |  |  |  | (1,203) |  |
Deferred tax liability |  |  |  |  | (168) |  |
Net assets acquired |  |  |  |  | $ 22,396 |  |
Malvar Engineering Limited [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Current assets |  |  |  |  |  | $ 3,240 |
Property and equipment |  |  |  |  |  | 635 |
Intangible - finite life |  |  |  |  |  | 1,778 |
Goodwill |  |  |  |  |  | 5,296 |
Total assets acquired |  |  |  |  |  | 10,949 |
Current liabilities assumed |  |  |  |  |  | (4,860) |
Deferred tax liability |  |  |  |  |  | (961) |
Net assets acquired |  |  |  |  |  | $ 5,128 |

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