REVENUE - Disaggregation of Revenue by Product (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 208,506	$ 246,023	$ 387,343	$ 467,820
Lease Revenue	359	323	604	567
Total Revenue	208,865	246,346	387,947	468,387
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	163,537	198,518	315,349	377,384
Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	35,865	48,192	73,884	97,841
Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	126,966	144,620	239,639	267,988
Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	706	5,706	1,826	11,555
Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	13,287	13,426	24,281	22,406
License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,457	6,722	10,917	11,575
Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	7,483	6,388	12,683	10,164
Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	347	316	681	667
Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	31,682	34,079	47,713	68,030
Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	12,233	11,566	17,035	16,532
Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15,626	23,420	22,125	40,369
Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	255		1,892	11,400
Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,568	(907)	6,661	(271)
Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	(116)	(49)	(246)	(98)
Operating Segments | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	68,310	66,271	140,152	143,035
Total Revenue	68,310	66,271	140,152	143,035
Operating Segments | Southern Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	58,407	58,220	120,853	129,196
Operating Segments | Southern Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	23,855	30,770	50,638	68,381
Operating Segments | Southern Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	33,846	21,744	68,389	49,260
Operating Segments | Southern Timber | Hardwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	706	5,706	1,826	11,555
Operating Segments | Southern Timber | Total Non-Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	9,903	8,051	19,299	13,839
Operating Segments | Southern Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	5,186	6,506	10,454	11,182
Operating Segments | Southern Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,717	1,545	8,845	2,657
Operating Segments | Southern Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	32,317	39,157	66,736	85,437
Total Revenue	32,317	39,157	66,736	85,437
Operating Segments | Pacific Northwest Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	29,985	37,882	63,481	83,015
Operating Segments | Pacific Northwest Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,204	3,572	5,919	6,491
Operating Segments | Pacific Northwest Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	27,781	34,310	57,562	76,524
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	2,332	1,275	3,255	2,422
Operating Segments | Pacific Northwest Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	203	129	340	245
Operating Segments | Pacific Northwest Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	2,129	1,146	2,915	2,177
Operating Segments | Pacific Northwest Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	60,898	78,882	105,004	130,271
Total Revenue	60,898	78,882	105,004	130,271
Operating Segments | New Zealand Timber | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	60,193	75,098	103,958	124,793
Operating Segments | New Zealand Timber | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	8,364	10,851	14,446	18,446
Operating Segments | New Zealand Timber | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	51,829	64,247	89,512	106,347
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	705	3,784	1,046	5,478
Operating Segments | New Zealand Timber | License Revenue, Primarily from Hunting
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	68	87	123	148
Operating Segments | New Zealand Timber | Other Non-Timber/Carbon Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	637	3,697	923	5,330
Operating Segments | New Zealand Timber | Agency Fee Income
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Operating Segments | Real Estate
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	31,682	34,079	47,713	68,030
Lease Revenue	359	323	604	567
Total Revenue	32,041	34,402	48,317	68,597
Operating Segments | Real Estate | Total Real Estate Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	31,682	34,079	47,713	68,030
Operating Segments | Real Estate | Improved Development
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	12,233	11,566	17,035	16,532
Operating Segments | Real Estate | Rural
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15,626	23,420	22,125	40,369
Operating Segments | Real Estate | Timberland & Non-Strategic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	255		1,892	11,400
Operating Segments | Real Estate | Deferred Revenue/Other
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,568	(907)	6,661	(271)
Operating Segments | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	15,299	27,634	27,738	41,047
Total Revenue	15,415	27,683	27,984	41,145
Operating Segments | Trading | Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	14,952	27,318	27,057	40,380
Operating Segments | Trading | Pulpwood
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	1,442	2,999	2,881	4,523
Operating Segments | Trading | Sawtimber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	13,510	24,319	24,176	35,857
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	347	316	681	667
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	347	316	681	667
Intersegment | Trading
Disaggregation of Revenue [Line Items]
Total Revenue	116	49	246	98
Intersegment | Elim.
Disaggregation of Revenue [Line Items]
Total Revenue	$ (116)	$ (49)	$ (246)	$ (98)