REVENUE - Disaggregation of Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 221,798	$ 191,215
Lease Revenue	243	232
Total Revenue	222,041	191,447
Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	49,649	35,988
Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	123,369	135,210
Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,849	405
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	178,867	171,603
License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,866	4,569
Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,763	4,415
Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	350	356
Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	8,979	9,340
Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,966	252
Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	16,950	9,765
Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,400
Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	636	255
Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	33,952	10,272
Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	(48)	(1,439)
Operating Segments | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	76,763	51,677
Total Revenue	76,763	51,677
Operating Segments | Southern Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	37,611	21,856
Operating Segments | Southern Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	27,516	21,963
Operating Segments | Southern Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,849	405
Operating Segments | Southern Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	70,976	44,224
Operating Segments | Southern Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,688	4,417
Operating Segments | Southern Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,099	3,036
Operating Segments | Southern Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Southern Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,787	7,453
Operating Segments | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	46,281	41,522
Total Revenue	46,281	41,522
Operating Segments | Pacific Northwest Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,918	2,495
Operating Segments | Pacific Northwest Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	42,215	37,758
Operating Segments | Pacific Northwest Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Pacific Northwest Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	45,133	40,253
Operating Segments | Pacific Northwest Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	116	91
Operating Segments | Pacific Northwest Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,032	1,178
Operating Segments | Pacific Northwest Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Pacific Northwest Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,148	1,269
Operating Segments | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	51,389	57,579
Total Revenue	51,389	57,579
Operating Segments | New Zealand Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	7,595	9,542
Operating Segments | New Zealand Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	42,100	47,792
Operating Segments | New Zealand Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | New Zealand Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	49,695	57,334
Operating Segments | New Zealand Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	62	58
Operating Segments | New Zealand Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,632	187
Operating Segments | New Zealand Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | New Zealand Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,694	245
Operating Segments | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	13,585
Total Revenue	0	14,939
Operating Segments | Timber Funds | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	260
Operating Segments | Timber Funds | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	13,308
Operating Segments | Timber Funds | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Timber Funds | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	13,568
Operating Segments | Timber Funds | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	3
Operating Segments | Timber Funds | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	14
Operating Segments | Timber Funds | Agency Fee Income
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	0	17
Operating Segments | Real Estate
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	33,952	10,272
Lease Revenue	243	232
Total Revenue	34,195	10,504
Operating Segments | Real Estate | Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,966	252
Operating Segments | Real Estate | Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	16,950	9,765
Operating Segments | Real Estate | Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,400
Operating Segments | Real Estate | Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	636	255
Operating Segments | Real Estate | Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	33,952	10,272
Operating Segments | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	13,413	16,580
Total Revenue	13,461	16,665
Operating Segments | Trading | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,525	1,835
Operating Segments | Trading | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	11,538	14,389
Operating Segments | Trading | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Trading | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	13,063	16,224
Operating Segments | Trading | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Trading | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0
Operating Segments | Trading | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	350	356
Operating Segments | Trading | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	350	356
Intersegment | Timber Funds
Disaggregation of Revenue [Line Items]
Total Revenue	0	1,354
Intersegment | Trading
Disaggregation of Revenue [Line Items]
Total Revenue	48	85
Intersegment | Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	$ (48)	$ (1,439)