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CLOSURE AND POST-CLOSURE LIABILITIES (Tables) | 9 Months Ended
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Sep. 30, 2020
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Closure and Post-Closure Liabilities | The changes to closure and post-closure liabilities (also referred to as “asset retirement obligations”) from January 1, 2020 through September 30, 2020 were as follows (in thousands):
| Landfill Retirement Liability |  | Non-Landfill Retirement Liability |  | Total
Balance at January 1, 2020 | $ | 39,401 |  |  | $ | 36,250 |  |  | $ | 75,651 |
Liabilities assumed in acquisitions | — |  |  | 265 |  |  | 265 |
New asset retirement obligations | 1,643 |  |  | — |  |  | 1,643 |
Accretion | 2,373 |  |  | 2,516 |  |  | 4,889 |
Changes in estimates recorded to statement of operations | 4,503 |  |  | (14) |  |  | 4,489 |
Changes in estimates recorded to balance sheet | 179 |  |  | 15 |  |  | 194 |
Expenditures | (2,116) |  |  | (622) |  |  | (2,738) |
Currency translation and other | (133) |  |  | (44) |  |  | (177) |
Balance at September 30, 2020 | $ | 45,850 |  |  | $ | 38,366 |  |  | $ | 84,216 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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