SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Operating Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total Operating Income	$ 46,893	$ 121,567	$ 96,154	$ 144,564
Unallocated interest expense and other	(8,627)	(7,712)	(16,524)	(16,432)
INCOME BEFORE INCOME TAXES	38,266	113,855	79,630	128,132
Real Estate | Dispositions | Timberland
Segment Reporting Information [Line Items]
Total Operating Income		101,300	28,200	101,300
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Total Operating Income	9,655	11,039	23,594	26,793
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Total Operating Income	(1,535)	1,034	(2,413)	2,419
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Total Operating Income	26,804	10,028	37,046	14,772
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Total Operating Income	16,133	105,695	45,798	109,920
Operating Segments | Trading
Segment Reporting Information [Line Items]
Total Operating Income	1,141	625	2,239	975
Corporate and other
Segment Reporting Information [Line Items]
Total Operating Income	$ (5,305)	$ (6,854)	$ (10,110)	$ (10,315)