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Landfill Accounting - Liability Adjustments and Restricted Cash and Investments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Landfill Accounting [Line Items] |  |
Liability adjustments | $ 14,587 |
Final capping, closure and post-closure liability - current portion | 185,118 | $ 199,735
Final capping, closure and post-closure liability - noncurrent portion | 629,602 | 660,388
Restricted cash | 138,220 | 135,807
Restricted investments | 74,160 | 78,126
Landfill |  |
Landfill Accounting [Line Items] |  |
Restricted cash | 12,589 | 8,852
Restricted investments | $ 74,058 | $ 77,855

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