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BUSINESS COMBINATIONS (Tables) | 9 Months Ended
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Sep. 30, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] |
Schedule of Business Combination, Recognized Asset Acquired and Liability Assumed | The following table summarizes the preliminary and final determinations and recognition of assets acquired and liabilities assumed (in thousands):
| At Acquisition Date As Reported December 31, 2024 |  | Measurement Period Adjustments |  | Final Allocation At Acquisition Date
Accounts receivable, including unbilled receivables | $ | 69,072 |  |  | $ | (856) |  |  | $ | 68,216 |
Inventories and supplies | 384 |  |  | — |  |  | 384 |
Prepaid expenses and other current assets | 4,383 |  |  | (123) |  |  | 4,260 |
Property, plant and equipment | 47,125 |  |  | 385 |  |  | 47,510 |
Permits and other intangibles | 130,500 |  |  | — |  |  | 130,500 |
Operating lease right-of-use assets | 9,385 |  |  | — |  |  | 9,385 |
Other long-term assets | 5,712 |  |  | 1,133 |  |  | 6,845 |
Accounts payable | (30,602) |  |  | — |  |  | (30,602) |
Accrued expenses and other current liabilities | (16,005) |  |  | (300) |  |  | (16,305) |
Current portion of operating lease liabilities | (2,758) |  |  | — |  |  | (2,758) |
Operating lease liabilities, less current portion | (6,627) |  |  | — |  |  | (6,627) |
Closure and post-closure liabilities | (2,492) |  |  | (385) |  |  | (2,877) |
Remedial liabilities | (2,435) |  |  | — |  |  | (2,435) |
Other long-term liabilities | (374) |  |  | — |  |  | (374) |
Total identifiable net assets | 205,268 |  |  | (146) |  |  | 205,122 |
Goodwill | 186,911 |  |  | 146 |  |  | 187,057 |
Total purchase price | $ | 392,179 |  |  | $ | — |  |  | $ | 392,179 |
The following table summarizes the preliminary and final determinations and recognition of assets acquired and liabilities assumed (in thousands):
| At Acquisition Date As Reported December 31, 2024 |  | Measurement Period Adjustments |  | Final Allocation At Acquisition Date
Accounts receivable, including unbilled receivables | $ | 5,855 |  |  | $ | (8) |  |  | $ | 5,847 |
Inventories and supplies | 6,598 |  |  | — |  |  | 6,598 |
Prepaid expenses and other current assets | 408 |  |  | — |  |  | 408 |
Property, plant and equipment | 55,615 |  |  | 35 |  |  | 55,650 |
Permits and other intangibles | 14,500 |  |  | — |  |  | 14,500 |
Operating lease right-of-use assets | 3,615 |  |  | — |  |  | 3,615 |
Other long-term assets | 92 |  |  | — |  |  | 92 |
Accounts payable | (7,752) |  |  | — |  |  | (7,752) |
Accrued expenses and other current liabilities | (1,145) |  |  | 17 |  |  | (1,128) |
Current portion of operating lease liabilities | (1,823) |  |  | — |  |  | (1,823) |
Operating lease liabilities, less current portion | (1,792) |  |  | — |  |  | (1,792) |
Closure and post-closure liabilities | (8,929) |  |  | (35) |  |  | (8,964) |
Remedial liabilities | (2,757) |  |  | 90 |  |  | (2,667) |
Total identifiable net assets | 62,485 |  |  | 99 |  |  | 62,584 |
Goodwill | 6,257 |  |  | (99) |  |  | 6,158 |
Total purchase price | $ | 68,742 |  |  | $ | — |  |  | $ | 68,742 |

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- Definition Tabular disclosure of asset acquired and liability assumed in business combination and recognized at acquisition date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
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