REVENUE - Disaggregation of Revenue by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 907,795	$ 1,108,445	$ 858,549
Lease Revenue	1,277	1,152	605
Total Revenue	909,072	1,109,597	859,154
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	715,650	729,501	594,899
Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	183,183	160,328	143,291
Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	515,251	564,502	449,178
Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	17,216	4,671	2,430
Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	55,414	190,228	34,910
License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	22,704	19,531	18,932
Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	31,454	12,546	14,818
Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,256	1,399	1,160
Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		156,752
Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	136,731	188,716	228,740
Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	35,413	51,713	14,498
Unimproved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		37,500	8,426
Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	59,485	43,088	67,152
Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,400	44	19,255
Conservation Easements
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		3,855	3,099
Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	(38)	(3,532)	283
Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	30,471	56,048	116,027
Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	(402)	(3,657)	(3,676)
Operating Segments | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	264,201	204,441	191,831
Total Revenue	264,201	204,441	191,831
Operating Segments | Southern Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	236,612	179,820	170,221
Operating Segments | Southern Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	126,884	95,995	94,108
Operating Segments | Southern Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	92,512	79,154	73,683
Operating Segments | Southern Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	17,216	4,671	2,430
Operating Segments | Southern Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	27,589	24,621	21,610
Operating Segments | Southern Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	21,287	18,116	17,765
Operating Segments | Southern Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,302	6,505	3,845
Operating Segments | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	162,237	143,021	120,809
Total Revenue	162,237	143,021	120,809
Operating Segments | Pacific Northwest Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	156,635	137,104	116,632
Operating Segments | Pacific Northwest Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15,094	9,336	10,581
Operating Segments | Pacific Northwest Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	141,541	127,768	106,051
Operating Segments | Pacific Northwest Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Operating Segments | Pacific Northwest Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,602	5,917	4,177
Operating Segments | Pacific Northwest Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,076	990	843
Operating Segments | Pacific Northwest Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,526	4,927	3,334
Operating Segments | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	274,076	281,158	202,315
Total Revenue	274,076	281,158	202,315
Operating Segments | New Zealand Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	253,109	280,098	194,493
Operating Segments | New Zealand Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	34,027	42,836	27,558
Operating Segments | New Zealand Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	219,082	237,262	166,935
Operating Segments | New Zealand Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Operating Segments | New Zealand Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	20,967	1,060	7,822
Operating Segments | New Zealand Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	341	385	307
Operating Segments | New Zealand Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	20,626	675	7,515
Operating Segments | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		196,065	26,120
Total Revenue	0	199,402	29,557
Operating Segments | Timber Funds | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	38,834	25,979
Operating Segments | Timber Funds | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		792	784
Operating Segments | Timber Funds | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		38,042	25,195
Operating Segments | Timber Funds | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		0	0
Operating Segments | Timber Funds | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		157,231	141
Operating Segments | Timber Funds | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		40	17
Operating Segments | Timber Funds | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		439	124
Operating Segments | Timber Funds | Fund II Timberland Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		156,752
Operating Segments | Real Estate
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	136,731	188,716	228,740
Lease Revenue	1,277	1,152	605
Total Revenue	138,008	189,868	229,345
Operating Segments | Real Estate | Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	136,731	188,716	228,740
Operating Segments | Real Estate | Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	35,413	51,713	14,498
Total Revenue	35,413	51,713	14,498
Operating Segments | Real Estate | Unimproved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		37,500	8,426
Total Revenue	0	37,500	8,426
Operating Segments | Real Estate | Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	59,485	43,088	67,152
Total Revenue	59,485	43,088	67,152
Operating Segments | Real Estate | Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,400	44	19,255
Operating Segments | Real Estate | Conservation Easements
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers		3,855	3,099
Total Revenue	0	3,855	3,099
Operating Segments | Real Estate | Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	(38)	(3,532)	283
Total Revenue	1,239	(2,380)	888
Operating Segments | Real Estate | Large Dispositions
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	30,471	56,048	116,027
Operating Segments | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	70,550	95,044	88,734
Total Revenue	70,952	95,364	88,973
Operating Segments | Trading | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	69,294	93,645	87,574
Operating Segments | Trading | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	7,178	11,369	10,260
Operating Segments | Trading | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	62,116	82,276	77,314
Operating Segments | Trading | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Operating Segments | Trading | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,256	1,399	1,160
Operating Segments | Trading | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Operating Segments | Trading | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Operating Segments | Trading | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,256	1,399	1,160
Intersegment Eliminations | Timber Funds
Disaggregation of Revenue [Line Items]
Total Revenue		3,337	3,437
Intersegment Eliminations | Trading
Disaggregation of Revenue [Line Items]
Total Revenue	402	320	239
Intersegment Eliminations | Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	$ (402)	$ (3,657)	$ (3,676)