SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Segment Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 1,109,597	$ 859,154	$ 711,556
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
Sales	(159,100)	22,700
Timber Funds, Portion Attributable To Noncontrolling Interests | Large Dispositions | Fund II Timberland Dispositions
Segment Reporting Information [Line Items]
Sales	125,400
Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales	(3,657)	(3,676)	(155)
Timber Funds, Portion Attributable To Parent | Large Dispositions | Fund II Timberland Dispositions
Segment Reporting Information [Line Items]
Sales	31,400
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Sales	204,441	191,831	194,111
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Sales	143,021	120,809	85,414
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Sales	281,158	202,315	241,861
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
Sales	199,402	29,557	0
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Sales	189,868	229,345	74,887
Operating Segments | Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
Sales	56,048	116,027	0
Operating Segments | Real Estate | Improved Development
Segment Reporting Information [Line Items]
Sales	51,713	14,498	5,882
Operating Segments | Real Estate | Unimproved Development
Segment Reporting Information [Line Items]
Sales	37,500	8,426	19,476
Operating Segments | Real Estate | Rural
Segment Reporting Information [Line Items]
Sales	43,088	67,152	47,647
Operating Segments | Real Estate | Timberland & Non-Strategic
Segment Reporting Information [Line Items]
Sales	44	19,255	1,338
Operating Segments | Real Estate | Conservation Easements
Segment Reporting Information [Line Items]
Sales	3,855	3,099	0
Operating Segments | Real Estate | Deferred Revenue/Other
Segment Reporting Information [Line Items]
Sales	(2,380)	888	544
Operating Segments | Trading
Segment Reporting Information [Line Items]
Sales	95,364	88,973	115,438
Intersegment Eliminations | Timber Funds
Segment Reporting Information [Line Items]
Sales	3,337	3,437
Intersegment Eliminations | Trading
Segment Reporting Information [Line Items]
Sales	320	239	155
Intersegment Eliminations | Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales	$ (3,657)	$ (3,676)	$ (155)