COMMITMENTS (Narrative) (Details) - Timberland Leases	6 Months Ended
	Jun. 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