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RELATED PARTY TRANSACTIONS (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Apr. 30, 1994 lease
Related Party Transaction [Line Items] |  |  |  |
Total services purchased | $ 15,206 | $ 12,601 | $ 7,574 |
Outstanding accounts payable | 1,325 | 1,297 |  |
Number of leases | lease |  |  |  | 2
Amortization of right-of-use assets | 5,118 | 3,736 |  |
Accrued costs associated with post-closure obligations | 86,914 | 82,533 | 71,927 |
Landfills |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Landfill post-closure cost | 12 | 8 | 9 |
Accrued costs associated with post-closure obligations | 14 | 25 |  |
CCI |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenue from related party | 430 | 288 | 132 |
Related Party |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Leases monthly payments | 29 |  |  |
Amortization of right-of-use assets | $ 297 | $ 319 | $ 339 |

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- Definition Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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