HIGHER AND BETTER USE TIMBERLANDS AND REAL ESTATE DEVELOPMENT INVESTMENTS (Analysis of Higher and Better Use Timberlands and Real Estate Development Investments) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	$ 65,450
Plus: Current portion, Beginning Balance	12,252
Total Balance, Beginning Balance	77,702
Non-cash cost of land and improved development	(1,763)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(1,123)
Capitalized real estate development investments	4,815
Capital expenditures (silviculture)	153
Intersegment transfers	4
Total Balance, Ending Balance	79,788
Less: Current portion, Ending Balance	(9,464)
Non-current portion, Ending Balance	70,324
Capitalized interest	100
Land and Timber
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	57,897
Plus: Current portion, Beginning Balance	6,019
Total Balance, Beginning Balance	63,916
Non-cash cost of land and improved development	(1,612)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	(1,123)
Capitalized real estate development investments	0
Capital expenditures (silviculture)	153
Intersegment transfers	4
Total Balance, Ending Balance	61,338
Less: Current portion, Ending Balance	(3,930)
Non-current portion, Ending Balance	57,408
Development Investments
Real Estate, Land and Land Development Costs [Roll Forward]
Non-current portion, Beginning Balance	7,553
Plus: Current portion, Beginning Balance	6,233
Total Balance, Beginning Balance	13,786
Non-cash cost of land and improved development	(151)
Timber depletion from harvesting activities and basis of timber sold in real estate sales	0
Capitalized real estate development investments	4,815
Capital expenditures (silviculture)	0
Intersegment transfers	0
Total Balance, Ending Balance	18,450
Less: Current portion, Ending Balance	(5,534)
Non-current portion, Ending Balance	$ 12,916