SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Operating Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information [Line Items]
Total Operating Income	$ 38,520	$ 57,074
Unallocated interest expense and other	(6,378)	(7,432)
INCOME BEFORE INCOME TAXES	32,142	49,642
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Total Operating Income	21,520	12,227
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Total Operating Income	(3,741)	4,674
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Total Operating Income	15,720	15,957
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Total Operating Income	10,027	28,054
Operating Segments | Trading
Segment Reporting Information [Line Items]
Total Operating Income	480	149
Corporate and other
Segment Reporting Information [Line Items]
Total Operating Income	$ (5,486)	$ (3,987)