REVENUE - Disaggregation of Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 194,881	$ 364,382	$ 662,701	$ 846,747
Lease Revenue	406	344	973	857
Total Revenue	195,287	364,726	663,674	847,604
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	167,569	176,819	544,953	557,160
Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	44,310	38,208	142,150	116,340
Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	119,038	138,364	387,027	438,900
Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,221	247	15,776	1,920
Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15,283	94,532	37,689	112,035
License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,585	5,058	17,159	14,347
Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	9,409	2,024	19,575	9,548
Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	289	350	955	1,040
Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		87,100		87,100
Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	12,029	93,031	80,059	177,552
Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,296	27,774	18,828	47,366
Unimproved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		37,500		37,500
Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,964	6,937	47,333	36,999
Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		44	11,400	44
Conservation Easement
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers				3,855
Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,769	728	2,498	(4,260)
Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		20,048		56,048
Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	(128)	(590)	(226)	(3,496)
Operating Segments | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	64,549	44,818	207,584	145,789
Total Revenue	64,549	44,818	207,584	145,789
Operating Segments | Southern Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	57,728	39,285	186,924	127,196
Operating Segments | Southern Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	32,564	21,358	100,945	66,941
Operating Segments | Southern Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	20,943	17,680	70,203	58,335
Operating Segments | Southern Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,221	247	15,776	1,920
Operating Segments | Southern Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,821	5,533	20,660	18,593
Operating Segments | Southern Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,141	4,588	16,322	13,501
Operating Segments | Southern Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,680	945	4,338	5,092
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 | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		0		0
Operating Segments | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,397	31,513	119,834	108,357
Total Revenue	34,397	31,513	119,834	108,357
Operating Segments | Pacific Northwest Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	32,619	30,250	115,633	104,336
Operating Segments | Pacific Northwest Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,989	2,116	9,478	6,689
Operating Segments | Pacific Northwest Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	29,630	28,134	106,155	97,647
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 Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,778	1,263	4,201	4,021
Operating Segments | Pacific Northwest Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	326	298	571	505
Operating Segments | Pacific Northwest Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,452	965	3,630	3,516
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 | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		0		0
Operating Segments | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	72,452	75,558	202,723	213,696
Total Revenue	72,452	75,558	202,723	213,696
Operating Segments | New Zealand Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	66,057	75,308	190,850	212,894
Operating Segments | New Zealand Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	7,645	10,746	26,091	32,555
Operating Segments | New Zealand Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	58,412	64,562	164,759	180,339
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 Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,395	250	11,873	802
Operating Segments | New Zealand Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	118	161	266	300
Operating Segments | New Zealand Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,277	89	11,607	502
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 | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		0		0
Operating Segments | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	93,970	0	124,795
Total Revenue	0	94,469	0	128,054
Operating Segments | Timber Funds | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	6,834	0	37,216
Operating Segments | Timber Funds | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	127	0	783
Operating Segments | Timber Funds | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	6,707	0	36,433
Operating Segments | Timber Funds | Hardwood
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	87,136	0	87,579
Operating Segments | Timber Funds | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	11	0	41
Operating Segments | Timber Funds | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	25	0	438
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 | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		87,100		87,100
Operating Segments | Real Estate
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	12,029	93,031	80,059	177,552
Lease Revenue	406	344	973	857
Total Revenue	12,435	93,375	81,032	178,409
Operating Segments | Real Estate | Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	12,029	93,031	80,059	177,552
Operating Segments | Real Estate | Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,296	27,774	18,828	47,366
Operating Segments | Real Estate | Unimproved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		37,500		37,500
Operating Segments | Real Estate | Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,964	6,937	47,333	36,999
Operating Segments | Real Estate | Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		44	11,400	44
Operating Segments | Real Estate | Conservation Easement
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers				3,855
Operating Segments | Real Estate | Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,769	728	2,498	(4,260)
Operating Segments | Real Estate | Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		20,048		56,048
Operating Segments | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,454	25,492	52,501	76,558
Total Revenue	11,582	25,583	52,727	76,795
Operating Segments | Trading | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,165	25,142	51,546	75,518
Operating Segments | Trading | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,112	3,861	5,636	9,372
Operating Segments | Trading | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	10,053	21,281	45,910	66,146
Operating Segments | Trading | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Trading | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	289	350	955	1,040
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	289	350	955	1,040
Operating Segments | Trading | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		0		0
Intersegment | Timber Funds
Disaggregation of Revenue [Line Items]
Total Revenue	0	499	0	3,259
Intersegment | Trading
Disaggregation of Revenue [Line Items]
Total Revenue	128	91	226	237
Intersegment | Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	$ (128)	$ (590)	$ (226)	$ (3,496)