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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Landfill and Lease Accounting (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) agreement | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | $ 718 | $ 413 | $ 263
Closure and post-closure costs incurrence period | 30 years |  |
Estimate of inflation rate | 1.60% |  |
Accretion expense | $ 6,775 | 6,436 |
Number of operation and management agreements entered into | agreement | 3 |  |
Closure and post closure costs |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accretion expense | $ 6,775 | 6,436 | $ 6,227
Surety bond | 209,275 | 205,048 |
Letters of credit | $ 0 | $ 0 |
Discount rate | Minimum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Asset retirement obligation measurement input | 5.50% |  |
Discount rate | Maximum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Asset retirement obligation measurement input | 9.90% |  |

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