MERGER WITH POPE RESOURCES (Narrative) (Details) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended						5 Months Ended	9 Months Ended
	May 08, 2020 a fund $ / shares shares	Sep. 30, 2020 USD ($) a fund	Sep. 30, 2020 USD ($) a fund	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($) a fund	Sep. 30, 2020 USD ($) a fund	Sep. 30, 2019 USD ($)
Business Acquisition [Line Items]
Costs related to the merger with Pope Resources			$ 430			$ 0				$ 16,415	$ 0
Net income (loss)			$ (9,498)			1,528				$ 17,378	50,241
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 IV | ORM Timber Funds
Business Acquisition [Line Items]
Ownership interest										15.00%
Oregon Wildfires | ORM Timber Fund II | ORM Timber Funds
Business Acquisition [Line Items]
Timber write-offs from casualty events		$ 8,800
Oregon Wildfires | ORM Timber Fund IV | ORM Timber Funds
Business Acquisition [Line Items]
Timber write-offs from casualty events		$ 400
Oregon Wildfires | Variable Interest Entity, Primary Beneficiary | ORM Timber Fund II | ORM Timber Funds
Business Acquisition [Line Items]
Area of land | a		6,700	6,700						6,700	6,700
Ownership interest		20.00%
Timber write-offs from casualty events		$ 1,800
Oregon Wildfires | Variable Interest Entity, Primary Beneficiary | ORM Timber Fund IV | ORM Timber Funds
Business Acquisition [Line Items]
Area of land | a		400	400						400	400
Ownership interest		15.00%
Timber write-offs from casualty events		$ 100
Rayonier Limited Partnership
Business Acquisition [Line Items]
Net income (loss)			$ (9,498)	$ 455	$ 26,421	$ 1,528	$ 20,920	$ 27,793		$ 17,378	$ 50,241
Merger with Pope Resources
Business Acquisition [Line Items]
Number of timber funds acquired | fund	3	3	3						3	3
Cash consideration (in dollars per share) | $ / shares	$ 37.50
Costs related to the merger with Pope Resources			$ 400	$ 13,500	$ 2,500
Amount of revenue included, subsequent to merger									$ 28,800
Merger with Pope Resources | Acquisition-related Transaction Costs
Business Acquisition [Line Items]
Net income (loss)			$ 400							$ 31,600
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