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REMEDIAL LIABILITIES (Changes in Remedial Liabilities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Changes to remedial liabilities |  |
Balance at the beginning of the period | $ 128,007 | $ 131,992
Liabilities assumed in acquisitions |  | 2,041
Measurement period adjustments from prior period acquisitions | 504 |
Accretion | 4,712 | 5,074
Changes in estimates recorded to statement of operations | 45 | (1,635)
Expenditures | (9,740) | (9,922)
Currency translation and other | 940 | 457
Balance at the end of the period | 124,468 | 128,007
Remedial Liabilities for Landfill Sites |  |
Changes to remedial liabilities |  |
Balance at the beginning of the period | 1,777 | 2,327
Liabilities assumed in acquisitions |  | 0
Measurement period adjustments from prior period acquisitions | 0 |
Accretion | 86 | 110
Changes in estimates recorded to statement of operations | (21) | (538)
Expenditures | (42) | (122)
Currency translation and other | 0 | 0
Balance at the end of the period | 1,800 | 1,777
Remedial Liabilities for Inactive Sites |  |
Changes to remedial liabilities |  |
Balance at the beginning of the period | 64,151 | 63,613
Liabilities assumed in acquisitions |  | 0
Measurement period adjustments from prior period acquisitions | 0 |
Accretion | 2,648 | 2,737
Changes in estimates recorded to statement of operations | (289) | 1,520
Expenditures | (3,906) | (3,893)
Currency translation and other | 2,738 | 174
Balance at the end of the period | 65,342 | 64,151
Remedial Liabilities (Including Superfund) for Non-Landfill Operations |  |
Changes to remedial liabilities |  |
Balance at the beginning of the period | 62,079 | 66,052
Liabilities assumed in acquisitions |  | 2,041
Measurement period adjustments from prior period acquisitions | 504 |
Accretion | 1,978 | 2,227
Changes in estimates recorded to statement of operations | 355 | (2,617)
Expenditures | (5,792) | (5,907)
Currency translation and other | (1,798) | 283
Balance at the end of the period | $ 57,326 | $ 62,079

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- Definition The increase or decrease in the accrual for environmental loss contingencies, during the reporting period that is related to currency translations and other adjustments. + References No definition available. + Details
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- Definition Accrual for Environmental Loss Contingencies, Increase (Decrease) for Acquisitions and Divestitures, Measurement Period Adjustment from Prior Period Acquisition + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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- Definition Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
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