MERGER WITH POPE RESOURCES (Narrative) (Details) $ / shares in Units, a in Thousands, $ in Thousands		2 Months Ended	3 Months Ended			6 Months Ended
	May 08, 2020 a fund $ / shares shares	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Business Acquisition [Line Items]
Costs related to the merger with Pope Resources			$ 13,498		$ 0	$ 15,985	$ 0
Pope Resources
Business Acquisition [Line Items]
Number of Timber Funds acquired | fund	3
Pirce per share issued per acquiree share (in dollars per share) | $ / shares	$ 37.50
Costs related to the merger with Pope Resources			13,500	$ 2,500
Amount of revenue included, subsequent to merger		$ 11,100
Pope Resources | Acquisition-related Transaction Costs
Business Acquisition [Line Items]
Costs related to the merger with Pope Resources			$ 23,300			$ 31,200
Pope Resources | Pacific Northwest Timber
Business Acquisition [Line Items]
Number of acres of high-quality land acquired | a	124
Pope Resources | Timber Funds
Business Acquisition [Line Items]
Number of acres of Timber Fund land acquired | a	141
Pope Resources | Limited Partnership Interest Of Pope
Business Acquisition [Line Items]
Number of shares issued per acquiree share (in shares) | shares	3.929
Pirce per share issued per acquiree share (in dollars per share) | $ / shares	$ 125.00
Pope Resources | Limited Partnership Interest Of Pope | Rayonier Limited Partnership
Business Acquisition [Line Items]
Number of shares issued per acquiree share (in shares) | shares	3.929
Pope Resources | 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
Pirce per share issued per acquiree share (in dollars per share) | $ / shares	$ 37.50