SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Depreciation, Depletion and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	$ 47,528	$ 41,867	$ 92,741	$ 111,567
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	5,100	3,500	10,100	3,500
Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	4,800		4,800	35,400
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	13,576	15,231	27,935	33,414
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	12,031	10,606	28,316	21,308
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	6,952	4,942	14,201	9,716
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	6,121	4,070	11,621	4,070
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	8,535	6,678	10,092	42,422
Corporate and Other
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	$ 313	$ 340	$ 576	$ 637