Segment and Geographical Information (Details) (USD $) In Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Segment Reporting Information [Line Items]
Gain on sale of a portion of the interest in the New Zealand joint venture	$ 0		$ 0		$ 0		$ 12,367
Depreciation, depletion and amortization	30,994		33,207		62,863		76,522
Operating Income	79,073		56,344		166,651		133,203
Sales	357,397		312,210		715,127		622,410
Assets	2,361,787				2,361,787				2,363,653
Forest Resources [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	15,848		17,269		31,252		34,005
Operating Income	11,838		8,663		22,888		16,872
Sales	57,037		48,917		105,217		96,025
Assets	1,255,830				1,255,830				1,259,925
Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	2,231		2,486		4,921		12,002
Operating Income	5,009		4,183		12,380		21,537
Sales	12,305		12,712		25,767		45,729
Assets	76,296				76,296				85,525
Performance Fibers Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	11,783		12,203		24,498		28,007
Operating Income	71,102		44,990		146,811		89,847
Sales	232,807		201,947		483,970		401,719
Assets	607,481				607,481				550,875
Wood Products Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	834		1,078		1,655		2,144
Operating Income	(987)		4,270		(534)		4,311
Sales	17,957		21,573		33,747		37,505
Assets	21,473				21,473				19,544
All Other Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	(965)		726		(166)		1,336
Sales	38,508		30,246		68,920		47,354
Assets	29,877				29,877				25,583
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales	(1,217)	[1]	(3,185)	[1]	(2,494)	[1]	(5,922)	[1]
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Operating Income	(6,924)	[2]	(6,488)	[2]	(14,728)	[2]	(700)	[2]
Assets	370,830				370,830				422,201
All Other Segments And Unallocated Amount To Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	$ 298		$ 171		$ 537		$ 364

[1] Intersegment eliminations primarily reflect sales from our Forest Resources segment to our Performance Fibers segment.

[2] Six months ended June 30, 2010 includes a $12.4 million gain from the sale of a portion of the Company's interest in its New Zealand JV. See Note 5 — Joint Venture Investment for additional information.