SEGMENT AND GEOGRAPHICAL INFORMATION Schedule of Segment Reporting Information, by Segment (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
ASSETS	$ 3,818,120,000				$ 3,818,120,000				$ 3,122,951,000
SALES	384,784,000		386,163,000		1,187,580,000		1,070,830,000
OPERATING INCOME(LOSS)	83,649,000		111,246,000		309,573,000		288,094,000
DEPRECIATION, DEPLETION AND AMORTIZATION	53,151,000		35,526,000		132,810,000		100,130,000
Forest Resources [Member]
Segment Reporting Information [Line Items]
ASSETS	2,216,727,000				2,216,727,000				1,690,030,000
SALES	111,260,000		59,853,000		277,422,000		164,711,000
OPERATING INCOME(LOSS)	23,172,000		11,184,000		57,317,000		27,438,000
DEPRECIATION, DEPLETION AND AMORTIZATION	28,475,000		18,793,000		72,210,000		52,662,000
Real Estate [Member]
Segment Reporting Information [Line Items]
ASSETS	88,002,000				88,002,000				112,647,000
SALES	14,088,000		13,043,000		51,761,000		37,369,000
OPERATING INCOME(LOSS)	7,521,000		8,420,000		30,468,000		20,897,000
DEPRECIATION, DEPLETION AND AMORTIZATION	2,074,000		1,288,000		8,720,000		4,733,000
Performance Fibers [Member]
Segment Reporting Information [Line Items]
ASSETS	1,122,779,000				1,122,779,000				902,309,000
SALES	224,243,000		288,221,000		761,456,000		793,586,000
OPERATING INCOME(LOSS)	62,663,000		101,455,000		233,415,000		265,812,000
DEPRECIATION, DEPLETION AND AMORTIZATION	22,340,000		15,077,000		51,142,000		41,577,000
Wood Products [Member]
Segment Reporting Information [Line Items]
ASSETS	0	[1]			0	[1]			18,454,000	[1]
Other Operations [Member]
Segment Reporting Information [Line Items]
ASSETS	29,056,000				29,056,000				23,296,000
SALES	35,295,000		26,293,000		97,394,000		76,702,000
OPERATING INCOME(LOSS)	(301,000)		(419,000)		1,643,000		(201,000)
Corporate and other [Member]
Segment Reporting Information [Line Items]
ASSETS	361,556,000				361,556,000				376,215,000
OPERATING INCOME(LOSS)	(9,406,000)	[2]	(9,394,000)	[2]	(13,270,000)	[2]	(25,852,000)	[2]
DEPRECIATION, DEPLETION AND AMORTIZATION	262,000		368,000		738,000		1,158,000
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
SALES	(102,000)		(1,247,000)		(453,000)		(1,538,000)
New Zealand Joint Venture [Member]
Segment Reporting Information [Line Items]
Step Acquisition, Remeasurement Gain, Amount					$ 16,100,000

[1] The Company sold its Wood Products segment during the first quarter of 2013. See Note 2 — Sale of Wood Products Business for additional information.

[2] The nine months ended September 30, 2013 includes a $16.1 million gain related to the consolidation of the New Zealand JV. See Note 6 — Joint Venture Investment.