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CLOSURE AND POST-CLOSURE LIABILITIES (Tables) | 3 Months Ended
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Mar. 31, 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 March 31, 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 | — |  |  | 604 |  |  | 604 |
New asset retirement obligations | 1,053 |  |  | — |  |  | 1,053 |
Accretion | 646 |  |  | 619 |  |  | 1,265 |
Changes in estimates recorded to statement of operations | — |  |  | 30 |  |  | 30 |
Changes in estimates recorded to balance sheet | 441 |  |  | — |  |  | 441 |
Expenditures | (155 | ) |  | (62 | ) |  | (217 | )
Currency translation and other | (78 | ) |  | (55 | ) |  | (133 | )
Balance at March 31, 2018 | $ | 34,289 |  |  | $ | 29,791 |  |  | $ | 64,080 |

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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://www.xbrl.org/2003/role/presentationRef -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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