SEGMENT AND GEOGRAPHICAL INFORMATION (Schedule of Operating Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total Operating Income	$ 1,780	$ 10,987	$ 52,019	$ 80,900
Unallocated interest expense and other	(10,558)	(7,208)	(27,225)	(20,451)
Total (Loss) Income before Income Taxes	(8,778)	3,779	24,794	60,449
Charges	430		16,415
Southern Timber
Segment Reporting Information [Line Items]
Timber write-offs from casualty events	6,000		6,000
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
Total Operating Income	10,300		12,300
Timber write-offs from casualty events	7,300		7,300
Timber Funds, Portion Attributable To Parent
Segment Reporting Information [Line Items]
Timber write-offs from casualty events	1,800		1,800
Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
Total Operating Income			28,700
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Total Operating Income	5,090	9,512	31,368	45,773
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Total Operating Income	(1,825)	(3,567)	(9,453)	(11,123)
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Total Operating Income	10,720	10,104	21,142	38,621
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
Total Operating Income	(12,370)	0	(14,262)	0
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Total Operating Income	9,459	425	61,081	25,920
Operating Segments | Trading
Segment Reporting Information [Line Items]
Total Operating Income	(557)	(37)	(474)	271
Corporate and Other
Segment Reporting Information [Line Items]
Total Operating Income	$ (8,737)	$ (5,450)	$ (37,383)	$ (18,562)