CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
SALES	$ 203,196	$ 194,491
Costs and Expenses
Cost of sales	138,488	136,828
Selling and general expenses	9,003	9,590
Other operating income, net (Note 15)	(1,369)	(1,188)
Costs and Expenses, Total	146,122	145,230
OPERATING INCOME	57,074	49,261
Interest expense	(8,052)	(8,415)
Interest and other miscellaneous income, net	620	518
INCOME BEFORE INCOME TAXES	49,642	41,364
Income tax expense (Note 8)	(6,936)	(6,281)
NET INCOME	42,706	35,083	$ 161,579
Less: Net income attributable to noncontrolling interest	2,167	1,240
NET INCOME ATTRIBUTABLE TO RAYONIER INC.	40,539	33,843
OTHER COMPREHENSIVE INCOME
Foreign currency translation adjustment, net of income tax expense of $0 and $0	9,688	2,432	9,114
Cash flow hedges, net of income tax benefit (expense) of $368 and ($32)	16,615	2,553	5,693
Amortization of pension and postretirement plans, net of income tax expense of $0 and $0	159	116	$ (208)
Total other comprehensive income	26,462	5,101
COMPREHENSIVE INCOME	69,168	40,184
Less: Comprehensive income attributable to noncontrolling interest	4,483	1,651
COMPREHENSIVE INCOME ATTRIBUTABLE TO RAYONIER INC.	$ 64,685	$ 38,533
EARNINGS PER COMMON SHARE (Note 11)
Basic earnings per share attributable to Rayonier Inc. (in dollars per share)	$ 0.31	$ 0.27
Diluted earnings per share attributable to Rayonier Inc. (in dollars per share)	0.31	0.27
Dividends declared per share (in dollars per share)	$ 0.25	$ 0.25	$ 1.00