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CLOSURE AND POST-CLOSURE LIABILITIES (Tables) | 9 Months Ended
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Sep. 30, 2018
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, 2018 through September 30, 2018 were as follows (in thousands):
| Landfill Retirement Liability |  | Non-Landfill Retirement Liability |  | Total
Balance at January 1, 2018 | $ | 32,382 |  |  | $ | 28,655 |  |  | $ | 61,037 |
Liabilities assumed in acquisition | — |  |  | 354 |  |  | 354 |
New asset retirement obligations | 2,052 |  |  | — |  |  | 2,052 |
Accretion | 1,898 |  |  | 1,897 |  |  | 3,795 |
Changes in estimates recorded to statement of operations | — |  |  | 400 |  |  | 400 |
Changes in estimates recorded to balance sheet | 871 |  |  | 64 |  |  | 935 |
Expenditures | (787 | ) |  | (269 | ) |  | (1,056 | )
Currency translation and other | (79 | ) |  | (57 | ) |  | (136 | )
Balance at September 30, 2018 | $ | 36,337 |  |  | $ | 31,044 |  |  | $ | 67,381 |

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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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