SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Non-Cash Cost of Land and Improved Development) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	$ 10,222	$ 4,108
Real Estate | Timberland | Dispositions
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	5,700
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	0	0
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	0	0
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	0	1,824
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	10,222	2,284
Operating Segments | Trading
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	0	0
Corporate and other
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	$ 0	$ 0