ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclassified AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (55,976)		$ (55,976)		$ (4,825)	$ (46,139)
Other operating income, net	(2,855)	$ (9,144)	(15,567)	$ (20,908)
Comprehensive (loss) income attributable to noncontrolling interest	(5,363)	(12,426)	(18,884)	(6,573)
Income tax (expense) benefit	541	$ 11,280	1,309	5,319
Income tax expense on pension plan contributed to Rayonier Advanced Materials			0	843
Net loss (gain) from accumulated other comprehensive income			5,726		4,392
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (18,012)		(18,012)		(1,548)	$ (342)
Net loss (gain) from accumulated other comprehensive income			3,312	(1,086)	(1,716)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Comprehensive (loss) income attributable to noncontrolling interest			(2,477)	1,488
Income tax (expense) benefit			(1,288)	835
Income tax expense on pension plan contributed to Rayonier Advanced Materials					$ 1,000
Net loss (gain) from accumulated other comprehensive income			(3,312)	1,929
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Foreign Exchange Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating income, net			3,928	(3,194)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Foreign Exchange Option [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating income, net			$ 3,149	$ (1,058)