(LOSS) EARNINGS PER COMMON SHARE (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income	$ 1,528	$ 20,920	$ 27,793	$ 30,639	$ 39,338	$ 42,706	$ 50,241	$ 112,682
Less: Net income attributable to noncontrolling interest	(1,961)			(7,207)			(7,129)	(12,453)
Net (loss) income attributable to Rayonier Inc.	$ (433)			$ 23,432			$ 43,112	$ 100,229
Shares used for determining basic (loss) earnings per common share (in shares)	129,325,181			129,142,931			129,293,562	129,005,074
Dilutive effect of:
Stock options (in shares)	0			73,372			13,405	85,000
Performance and restricted shares (in shares)	0			539,571			345,495	584,364
Shares used for determining diluted (loss) earnings per common share (in shares)	129,325,181			129,755,874			129,652,462	129,674,438
Basic (loss) earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0			$ 0.18			$ 0.33	$ 0.78
Diluted (loss) earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0			$ 0.18			$ 0.33	$ 0.77