EARNINGS PER COMMON SHARE (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 30,773	$ 111,579	$ 65,856	$ 126,637	$ 217,770
Less: Net income attributable to noncontrolling interest	4,612	1,758	5,853	2,344
NET INCOME ATTRIBUTABLE TO RAYONIER INC.	$ 26,161	$ 109,821	$ 60,003	$ 124,293
Shares used for determining basic earnings per common share (in shares)	128,548,218	122,567,853	126,081,762	122,562,046
Dilutive effect of:
Stock options (in shares)	92,513	98,407	99,602	75,967
Performance and restricted shares (in shares)	447,448	154,654	337,862	94,889
Shares used for determining diluted earnings per common share (in shares)	129,088,179	122,820,914	126,519,226	122,732,902
Basic earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0.20	$ 0.90	$ 0.48	$ 1.01
Diluted earnings per common share attributable to Rayonier Inc. (in dollars per share)	$ 0.20	$ 0.89	$ 0.47	$ 1.01