MERGER WITH POPE RESOURCES - Narrative (Details) $ / shares in Units, $ in Thousands		1 Months Ended	8 Months Ended	12 Months Ended
	May 08, 2020 USD ($) a fund $ / shares shares	Sep. 30, 2020 USD ($) a	Dec. 31, 2020 USD ($) fund	Dec. 31, 2020 USD ($) fund	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Costs related to the merger with Pope Resources				$ 17,166	$ 0	$ 0
Net income				$ 29,784	67,678	117,330
ORM Timber Fund II | ORM Timber Funds | Oregon Wildfires
Business Acquisition [Line Items]
Timber write-offs from casualty events		$ 8,800
ORM Timber Fund IV | ORM Timber Funds | Oregon Wildfires
Business Acquisition [Line Items]
Timber write-offs from casualty events		$ 400
Variable Interest Entity, Primary Beneficiary | ORM Timber Fund II | ORM Timber Funds
Business Acquisition [Line Items]
Ownership interest				20.00%
Variable Interest Entity, Primary Beneficiary | ORM Timber Fund II | ORM Timber Funds | Oregon Wildfires
Business Acquisition [Line Items]
Area of land | a		6,700
Ownership interest		20.00%
Timber write-offs from casualty events		$ 1,800
Variable Interest Entity, Primary Beneficiary | ORM Timber Fund IV | ORM Timber Funds
Business Acquisition [Line Items]
Ownership interest				15.00%
Variable Interest Entity, Primary Beneficiary | ORM Timber Fund IV | ORM Timber Funds | Oregon Wildfires
Business Acquisition [Line Items]
Area of land | a		400
Ownership interest		15.00%
Timber write-offs from casualty events		$ 100
Rayonier Limited Partnership
Business Acquisition [Line Items]
Net income				$ 29,784	$ 67,678	$ 117,330
Merger with Pope Resources
Business Acquisition [Line Items]
Number of timber funds acquired | fund	3		3	3
Cash consideration (in dollars per share) | $ / shares	$ 37.50
Costs related to the merger with Pope Resources				$ 17,200
Amount of revenue included, subsequent to merger			$ 50,800
Deferred income tax liability	$ 2,000
Merger with Pope Resources | Acquisition-related Transaction Costs
Business Acquisition [Line Items]
Net income				$ 32,400
Merger with Pope Resources | Limited Partnership Interest of Pope
Business Acquisition [Line Items]
Cash consideration (in dollars per share) | $ / shares	$ 125.00
Merger with Pope Resources | Holders of Pope Resources Units With No Valid Election
Business Acquisition [Line Items]
Cash consideration (in dollars per share) | $ / shares	$ 37.50
Merger with Pope Resources | Common Stock
Business Acquisition [Line Items]
Number of shares issued per acquiree share (in shares) | shares	3.929
Merger with Pope Resources | Common Stock | Holders of Pope Resources Units With No Valid Election
Business Acquisition [Line Items]
Number of shares issued per acquiree share (in shares) | shares	2.751
Merger with Pope Resources | Partnership Interest | Rayonier Limited Partnership
Business Acquisition [Line Items]
Number of shares issued per acquiree share (in shares) | shares	3.929
Merger with Pope Resources | Pacific Northwest Timber
Business Acquisition [Line Items]
Number of acres of high-quality land acquired | a	124,000
Merger with Pope Resources | Timber Funds
Business Acquisition [Line Items]
Number of acres of Timber Fund land acquired | a	141,000