REVENUE - Disaggregation of Revenue by Contract Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 1,108,445	$ 858,549	$ 711,556
Southern Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	204,441	191,831	194,111
Pacific Northwest Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	143,021	120,809	85,414
New Zealand Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	281,158	202,315	241,861
Timber Funds | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	196,065	26,120
Trading | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	95,044	88,734	115,283
Total Timber Sales
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	729,501	594,899	587,895
Total Timber Sales | Southern Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	179,820	170,221	159,156
Total Timber Sales | Pacific Northwest Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	137,104	116,632	82,727
Total Timber Sales | New Zealand Timber | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	280,098	194,493	231,406
Total Timber Sales | Timber Funds | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	38,834	25,979	0
Total Timber Sales | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers			114,606
Total Timber Sales | Trading | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	93,645	87,574	114,606
Total Timber Sales | Stumpage Pay-as-Cut
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	69,239	70,415	71,943
Total Timber Sales | Stumpage Pay-as-Cut | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	68,471	68,684	71,943
Total Timber Sales | Stumpage Pay-as-Cut | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Total Timber Sales | Stumpage Pay-as-Cut | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	768	1,731	0
Total Timber Sales | Stumpage Lump Sum
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	17,659	10,169	10,177
Total Timber Sales | Stumpage Lump Sum | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	6,890	2,027	7,428
Total Timber Sales | Stumpage Lump Sum | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	10,769	8,142	2,749
Total Timber Sales | Stumpage Lump Sum | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Total Timber Sales | Total Stumpage
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	86,898	80,584	82,120
Total Timber Sales | Total Stumpage | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	75,361	70,711	79,371
Total Timber Sales | Total Stumpage | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	10,769	8,142	2,749
Total Timber Sales | Total Stumpage | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	768	1,731	0
Total Timber Sales | Total Delivered
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	642,603	514,315	505,775
Total Timber Sales | Total Delivered | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	104,459	99,510	79,785
Total Timber Sales | Total Delivered | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	126,335	108,490	79,978
Total Timber Sales | Total Delivered | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	280,098	194,493	231,406
Total Timber Sales | Total Delivered | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	38,066	24,248	0
Total Timber Sales | Total Delivered | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	93,645	87,574
Total Timber Sales | Total Delivered | Domestic
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	323,478	283,070	237,494
Total Timber Sales | Total Delivered | Domestic | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	81,803	85,996	71,054
Total Timber Sales | Total Delivered | Domestic | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	126,335	108,490	79,978
Total Timber Sales | Total Delivered | Domestic | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	73,543	62,568	80,974
Total Timber Sales | Total Delivered | Domestic | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	38,066	24,248	0
Total Timber Sales | Total Delivered | Domestic | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	3,731	1,768	5,488
Total Timber Sales | Total Delivered | Export
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	319,125	231,245	268,281
Total Timber Sales | Total Delivered | Export | Southern Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	22,656	13,514	8,731
Total Timber Sales | Total Delivered | Export | Pacific Northwest Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Total Timber Sales | Total Delivered | Export | New Zealand Timber
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	206,555	131,925	150,432
Total Timber Sales | Total Delivered | Export | Timber Funds
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	0	0	0
Total Timber Sales | Total Delivered | Export | Trading
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 89,914	$ 85,806	$ 109,118