HIGHER AND BETTER USE TIMBERLANDS AND REAL ESTATE DEVELOPMENT INVESTMENTS (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	$ 70,374
Plus: Current portion, Beginning Balance	17,059
Total Balance, Beginning Balance	87,433
Non-cash cost of land and improved development	(1,175)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(1,208)
Capitalized real estate development investments	5,599
Capital expenditures (silviculture)	141
Intersegment transfers	4,144
Total Balance, Ending Balance	94,934
Less: Current portion, Ending Balance	(20,046)
Non-current portion, Ending Balance	74,888
Capitalized interest	200
Land and Timber
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	59,956
Plus: Current portion, Beginning Balance	5,096
Total Balance, Beginning Balance	65,052
Non-cash cost of land and improved development	(998)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(1,208)
Capitalized real estate development investments	0
Capital expenditures (silviculture)	141
Intersegment transfers	4,144
Total Balance, Ending Balance	67,131
Less: Current portion, Ending Balance	(5,020)
Non-current portion, Ending Balance	62,111
Development Investments
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	10,418
Plus: Current portion, Beginning Balance	11,963
Total Balance, Beginning Balance	22,381
Non-cash cost of land and improved development	(177)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	0
Capitalized real estate development investments	5,599
Capital expenditures (silviculture)	0
Intersegment transfers	0
Total Balance, Ending Balance	27,803
Less: Current portion, Ending Balance	(15,026)
Non-current portion, Ending Balance	$ 12,777