SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Depreciation, Depletion and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	$ 200,368	$ 128,235	$ 144,121
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	10,300
Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	35,400
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	61,827	61,923	58,609
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	47,107	29,165	32,779
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	25,030	27,761	28,007
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	11,884	0	0
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	53,093	8,229	23,566
Corporate and other
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization	$ 1,427	$ 1,157	$ 1,160