EARNINGS PER COMMON SHARE (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 27,793	$ 42,706
Less: Net income attributable to noncontrolling interest	(2,999)	(2,167)
NET INCOME ATTRIBUTABLE TO RAYONIER INC.	$ 24,794	$ 40,539
Shares used for determining basic earnings per common share (in shares)	129,172,925	128,801,210
Dilutive effect of:
Stock options (in shares)	19,696	78,475
Performance and restricted shares (in shares)	557,660	672,712
Shares used for determining diluted earnings per common share (in shares)	129,750,281	129,552,397
Basic earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0.19	$ 0.31
Diluted earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0.19	$ 0.31