REVENUE - Disaggregation of Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 246,023	$ 291,150	$ 467,820	$ 482,365
Lease Revenue	323	281	567	513
Total Revenue	246,346	291,431	468,387	482,878
Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	48,192	42,143	97,841	78,131
Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	144,620	165,327	267,988	300,537
Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,706	1,268	11,555	1,673
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	198,518	208,738	377,384	380,341
License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,722	4,717	11,575	9,288
Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,388	3,111	10,164	7,523
Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	316	334	667	691
Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	13,426	8,162	22,406	17,502
Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,566	19,340	16,532	19,592
Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	23,420	20,297	40,369	30,062
Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers			11,400
Conservation Easement
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		3,855		3,855
Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	(907)	(5,242)	(271)	(4,987)
Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		36,000		36,000
Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,079	74,250	68,030	84,522
Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	(49)	(1,468)	(98)	(2,907)
Operating Segments | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	66,271	49,294	143,035	100,971
Total Revenue	66,271	49,294	143,035	100,971
Operating Segments | Southern Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	30,770	23,728	68,381	45,584
Operating Segments | Southern Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	21,744	18,692	49,260	40,655
Operating Segments | Southern Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,706	1,268	11,555	1,673
Operating Segments | Southern Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	58,220	43,688	129,196	87,912
Operating Segments | Southern Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,506	4,493	11,182	8,913
Operating Segments | Southern Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,545	1,113	2,657	4,146
Operating Segments | Southern Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Southern Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	8,051	5,606	13,839	13,059
Operating Segments | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	39,157	35,323	85,437	76,844
Total Revenue	39,157	35,323	85,437	76,844
Operating Segments | Pacific Northwest Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,572	2,078	6,491	4,573
Operating Segments | Pacific Northwest Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,310	31,755	76,524	69,513
Operating Segments | Pacific Northwest Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Pacific Northwest Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	37,882	33,833	83,015	74,086
Operating Segments | Pacific Northwest Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	129	117	245	207
Operating Segments | Pacific Northwest Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,146	1,373	2,177	2,551
Operating Segments | Pacific Northwest Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Pacific Northwest Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,275	1,490	2,422	2,758
Operating Segments | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	78,882	80,559	130,271	138,138
Total Revenue	78,882	80,559	130,271	138,138
Operating Segments | New Zealand Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	10,851	12,266	18,446	21,809
Operating Segments | New Zealand Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	64,247	67,986	106,347	115,777
Operating Segments | New Zealand Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | New Zealand Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	75,098	80,252	124,793	137,586
Operating Segments | New Zealand Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	87	81	148	139
Operating Segments | New Zealand Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,697	226	5,330	413
Operating Segments | New Zealand Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | New Zealand Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,784	307	5,478	552
Operating Segments | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	17,239	0	30,824
Total Revenue	0	18,646	0	33,585
Operating Segments | Timber Funds | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	395	0	655
Operating Segments | Timber Funds | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	16,419	0	29,727
Operating Segments | Timber Funds | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Timber Funds | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	16,814	0	30,382
Operating Segments | Timber Funds | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	26	0	29
Operating Segments | Timber Funds | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	399	0	413
Operating Segments | Timber Funds | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Timber Funds | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	425	0	442
Operating Segments | Real Estate
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,079	74,250	68,030	84,522
Lease Revenue	323	281	567	513
Total Revenue	34,402	74,531	68,597	85,035
Operating Segments | Real Estate | Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,566	19,340	16,532	19,592
Operating Segments | Real Estate | Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	23,420	20,297	40,369	30,062
Operating Segments | Real Estate | Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers			11,400
Operating Segments | Real Estate | Conservation Easement
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		3,855		3,855
Operating Segments | Real Estate | Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	(907)	(5,242)	(271)	(4,987)
Operating Segments | Real Estate | Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		36,000		36,000
Total Revenue		36,000		36,000
Operating Segments | Real Estate | Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,079	74,250	68,030	84,522
Operating Segments | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	27,634	34,485	41,047	51,066
Total Revenue	27,683	34,546	41,145	51,212
Operating Segments | Trading | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,999	3,676	4,523	5,510
Operating Segments | Trading | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	24,319	30,475	35,857	44,865
Operating Segments | Trading | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Trading | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	27,318	34,151	40,380	50,375
Operating Segments | Trading | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Trading | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Trading | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	316	334	667	691
Operating Segments | Trading | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	316	334	667	691
Intersegment | Timber Funds
Disaggregation of Revenue [Line Items]
Total Revenue	0	1,407	0	2,761
Intersegment | Trading
Disaggregation of Revenue [Line Items]
Total Revenue	49	61	98	146
Intersegment | Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	$ (49)	$ (1,468)	$ (98)	$ (2,907)