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COMMITMENTS (Narrative) (Details) - Timberland Leases | 9 Months Ended
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Sep. 30, 2017
United States | Minimum |
Loss Contingencies [Line Items] |
Contract terms, in years | 30 years
United States | Maximum |
Loss Contingencies [Line Items] |
Contract terms, in years | 65 years
New Zealand | Minimum |
Loss Contingencies [Line Items] |
Contract terms, in years | 30 years
New Zealand | Maximum |
Loss Contingencies [Line Items] |
Contract terms, in years | 99 years

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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