SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Depreciation, Depletion and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	$ 78,909	$ 43,283	$ 171,652	$ 154,851
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	34,400	3,700	44,400	7,200
Timber Funds, Portion Attributable To Noncontrolling Interests | Fund II Timberland Dispositions | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	32,500		32,500
Timber Funds, Portion Attributable To Parent | Fund II Timberland Dispositions | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	8,100		8,100
Real Estate | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	5,000		9,800	35,400
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	11,604	14,954	39,539	48,368
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	10,479	10,912	38,795	32,221
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	6,555	7,345	20,757	17,062
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	43,158	4,170	54,780	8,239
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	6,797	5,527	16,889	47,950
Corporate and Other
Segment Reporting Information [Line Items]
DEPRECIATION, DEPLETION AND AMORTIZATION	$ 316	$ 375	$ 892	$ 1,011