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NONCONTROLLING INTERESTS (Narrative) (Details) $ in Thousands, $ in Millions		1 Months Ended		3 Months Ended					9 Months Ended
	May 08, 2020 a fund	Sep. 30, 2020 USD ($) a fund	Sep. 30, 2020 NZD ($)	Sep. 30, 2020 USD ($) a fund	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($) a fund
Schedule of Equity Method Investments [Line Items]
Distributions to noncontrolling interests in the Operating Partnership				$ 667	$ 6,856	$ 725	$ 3,721	$ 3,594
Merger with Pope Resources
Schedule of Equity Method Investments [Line Items]
Number of timber funds acquired \| fund	3	3		3					3
Matariki Forestry Group
Schedule of Equity Method Investments [Line Items]
Acres of timberland owned (acres) \| a		416,000		416,000					416,000
Distributions to noncontrolling interests in the Operating Partnership		$ 5,100
Matariki Forestry Group \| Minority Shareholder Due 2025 At 2.95%
Schedule of Equity Method Investments [Line Items]
Redeemable determinated price		$ 23,300		$ 23,300					$ 23,300
Stated fixed interest rate		2.95%		2.95%					2.95%
Advance from minority shareholder			$ 22.7
Ferncliff Investors \| Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Number of acres to be developed \| a	5
Rayonier \| Matariki Forestry Group
Schedule of Equity Method Investments [Line Items]
Ownership percentage		77.00%		77.00%					77.00%
Rayonier New Zealand Subsidiary \| Matariki Forestry Group
Schedule of Equity Method Investments [Line Items]
Ownership percentage by noncontrolling owners		23.00%		23.00%					23.00%
ORM Timber Fund II
Schedule of Equity Method Investments [Line Items]
Operating agreement term	10 years
ORM Timber Fund II \| ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Ownership interest									20.00%
ORM Timber Fund III
Schedule of Equity Method Investments [Line Items]
Operating agreement term	10 years
ORM Timber Fund III \| ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Ownership interest									5.00%
ORM Timber Fund IV
Schedule of Equity Method Investments [Line Items]
Operating agreement term	15 years
ORM Timber Fund IV \| ORM Timber Funds \| Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Ownership interest									15.00%
Ferncliff Investors \| Ferncliff Management
Schedule of Equity Method Investments [Line Items]
Ownership interest owned by limited partners	33.33%
Bainbridge Landing LLC \| Ferncliff Investors
Schedule of Equity Method Investments [Line Items]
Ownership interest owned by limited partners	50.00%