SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Operating Income (Loss) (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]
Total Operating Income	$ 84,444	$ 11,686	$ 112,929	$ 50,238
Unallocated interest expense and other	(14,144)	(8,241)	(24,175)	(16,666)
Total Income before Income Taxes	70,300	3,445	88,754	33,572
Restructuring Charges	0	13,498	0	15,985
Merger with Pope Resources
Segment Reporting Information [Line Items]
Restructuring Charges		13,500		16,000
Timber Funds, Portion Attributable To Noncontrolling Interests
Segment Reporting Information [Line Items]
Total Operating Income	(1,600)	2,000	(2,700)	2,000
Real Estate | Large Dispositions
Segment Reporting Information [Line Items]
Total Operating Income	30,300		30,300	28,700
Operating Segments | Southern Timber
Segment Reporting Information [Line Items]
Total Operating Income	16,980	11,208	34,327	26,278
Operating Segments | Pacific Northwest Timber
Segment Reporting Information [Line Items]
Total Operating Income	1,872	(6,681)	3,222	(7,629)
Operating Segments | New Zealand Timber
Segment Reporting Information [Line Items]
Total Operating Income	20,714	4,973	34,658	10,422
Operating Segments | Timber Funds
Segment Reporting Information [Line Items]
Total Operating Income	1,991	(1,892)	3,492	(1,892)
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Total Operating Income	50,511	24,848	52,199	51,622
Operating Segments | Trading
Segment Reporting Information [Line Items]
Total Operating Income	418	102	662	83
Corporate and Other
Segment Reporting Information [Line Items]
Total Operating Income	$ (8,042)	$ (20,872)	$ (15,631)	$ (28,646)