REVENUE (Revenue Recognition for Timber Sales) (Details)	6 Months Ended
	Jun. 30, 2018
Stumpage Pay-as-Cut
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Payment period after satisfaction of obligation	10 days
Total Delivered | Domestic
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Payment period after satisfaction of obligation	30 days
Payment period after satisfaction of obligation, letter of credit	30 days
Minimum | Stumpage Pay-as-Cut
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Initial payment, percentage of estimated contract value	5.00%
Maximum | Stumpage Pay-as-Cut
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Initial payment, percentage of estimated contract value	20.00%