Segment and Geographical Information (Details) (USD $) In Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 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	38,895		39,165		101,758		115,687
Operating Income	108,310		92,082		274,961		225,286
Sales	385,091		377,515		1,100,218		999,925
Assets	2,494,721				2,494,721				2,363,653
Forest Resources [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	16,614		14,813		47,866		48,819
Operating Income	10,792		9,151		33,681		26,023
Sales	57,265		47,343		162,482		143,368
Assets	1,342,022				1,342,022				1,259,925
Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	5,677		9,284		10,598		21,286
Operating Income	28,077		30,788		40,458		52,325
Sales	32,177		45,162		57,945		90,891
Assets	82,313				82,313				85,525
Performance Fibers Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	15,592		13,922		40,089		41,929
Operating Income	74,897		62,311		221,709		152,158
Sales	255,457		246,314		739,426		648,032
Assets	617,649				617,649				550,875
Wood Products Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	689		936		2,344		3,080
Operating Income	(740)		(1,368)		(1,274)		2,943
Sales	16,492		14,652		50,239		52,157
Assets	20,292				20,292				19,544
All Other Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	1,122		(798)		955		538
Sales	25,950		25,449		94,869		72,803
Assets	22,980				22,980				25,583
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Sales	(2,250)	[1]	(1,405)	[1]	(4,743)	[1]	(7,326)	[1]
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Operating Income	(5,838)	[2]	(8,002)	[2]	(20,568)	[2]	(8,701)	[2]
Assets	409,465				409,465				422,201
All Other Segments And Unallocated Amount To Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, depletion and amortization	$ 323		$ 210		$ 861		$ 573

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

[2] Nine months ended September 30, 2010 include 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.