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CLOSURE AND POST-CLOSURE LIABILITIES (Tables) | 6 Months Ended
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Jun. 30, 2019
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, 2019 through June 30, 2019 were as follows (in thousands):
| Landfill Retirement Liability |  | Non-Landfill Retirement Liability |  | Total
Balance at January 1, 2019 | $ | 37,809 |  |  | $ | 32,122 |  |  | $ | 69,931 |
Liabilities assumed in acquisitions | — |  |  | 220 |  |  | 220 |
New asset retirement obligations | 1,058 |  |  | — |  |  | 1,058 |
Accretion | 1,455 |  |  | 1,387 |  |  | 2,842 |
Changes in estimates recorded to statement of operations | — |  |  | 107 |  |  | 107 |
Changes in estimates recorded to balance sheet | 2,798 |  |  | — |  |  | 2,798 |
Expenditures | (319 | ) |  | (1,219 | ) |  | (1,538 | )
Currency translation and other | 222 |  |  | 190 |  |  | 412 |
Balance at June 30, 2019 | $ | 43,023 |  |  | $ | 32,807 |  |  | $ | 75,830 |

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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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