EARNINGS PER SHARE AND PER UNIT - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income	$ 29,784	$ 67,678	$ 117,330
Less: Net (income) attributable to noncontrolling interest in the Operating Partnership	(528)	0	0
Less: Net loss (income) attributable to noncontrolling interests in consolidated affiliates	7,828	(8,573)	(15,114)
Net Income attributable to Rayonier Inc.	$ 37,084	$ 59,105	$ 102,216
Denominator:
Denominator for basic earnings per common share - weighted average shares (in shares)	133,865,867	129,257,202	129,043,627
Basic earnings per common share attributable to Rayonier Inc (in dollars per share)	$ 0.28	$ 0.46	$ 0.79
Numerator:
Net income	$ 29,784	$ 67,678	$ 117,330
Less: Net loss (income) attributable to noncontrolling interest in consolidated affiliates	7,828	(8,573)	(15,114)
Net income attributable to Rayonier Inc., before net income attributable to noncontrolling interests in the Operating Partnership	$ 37,612	$ 59,105	$ 102,216
Denominator:
Denominator for basic earnings per common share - weighted average shares (in shares)	133,865,867	129,257,202	129,043,627
Add: Dilutive effect of:
Stock options (in shares)	633	12,209	71,276
Performance shares, restricted shares and restricted stock units (in shares/units)	198,955	328,977	575,328
Noncontrolling interests in Operating Partnership units (in shares)	2,877,447	0	0
Denominator for diluted earnings per unit - adjusted weighted average units (in shares)	136,942,902	129,598,388	129,690,231
Diluted earnings per common share attributable to Rayonier Inc (in dollars per share)	$ 0.27	$ 0.46	$ 0.79
Rayonier Limited Partnership
Numerator:
Net income	$ 29,784	$ 67,678	$ 117,330
Less: Net loss (income) attributable to noncontrolling interests in consolidated affiliates	7,828	(8,573)	(15,114)
Net Income attributable to Rayonier Inc.	$ 37,612	$ 59,105	$ 102,216
Denominator:
Denominator for basic earnings per unit - weighted average units (in units)	136,743,314	129,257,202	129,043,627
Basic earnings per unit attributable to Rayonier, L.P. (in dollars per unit)	$ 0.28	$ 0.46	$ 0.79
Numerator:
Net income	$ 29,784	$ 67,678	$ 117,330
Less: Net loss (income) attributable to noncontrolling interest in consolidated affiliates	$ 7,828	$ (8,573)	$ (15,114)
Denominator:
Denominator for basic earnings per unit - weighted average units (in units)	136,743,314	129,257,202	129,043,627
Add: Dilutive effect of:
Stock options (in shares)	633	12,209	71,276
Performance shares, restricted shares and restricted stock units (in shares/units)	198,955	328,977	575,328
Denominator for diluted earnings per unit - adjusted weighted average units (in shares)	136,942,902	129,598,388	129,690,231
Diluted earnings per unit attributable to Rayonier, L.P. (in dollars per unit)	$ 0.27	$ 0.46	$ 0.79