SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Non-Cash Cost of Land and Improved Development (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]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	$ 24,480	$ 7,259	$ 31,548	$ 72,340
Timber Funds
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	8,635	0	8,635	0
Timber Funds | Fund II Timberland Dispositions | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	8,600		8,600
Timber Funds, Portion Attributable To Noncontrolling Interests | Fund II Timberland Dispositions | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	6,900		6,900
Timber Funds, Portion Attributable To Parent | Fund II Timberland Dispositions | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	1,700		1,700
Real Estate
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT	$ 15,845	$ 7,259	22,913	72,340
Real Estate | Disposal Group, Not Discontinued Operations
Segment Reporting Information [Line Items]
NON-CASH COST OF LAND AND IMPROVED DEVELOPMENT			$ 100	$ 51,600