Sales by Product Line (Details) (USD $)	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Total Sales	$ 520,242,000	$ 384,784,000	$ 409,077,000	$ 393,719,000	$ 412,660,000	$ 386,163,000	$ 348,096,000	$ 336,571,000		$ 1,707,822,000		$ 1,483,490,000		$ 1,420,960,000
Sales									145,719,000	146,000,000
Forest Resources [Member]
Segment Reporting Information [Line Items]
Total Sales										382,000,000	[1]	230,000,000	[1]	215,000,000	[1]
Acres of timberland divested										128,000
Land sales										57,000,000
Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Total Sales										149,000,000	[2]	57,000,000	[2]	71,000,000	[2]
Real Estate Segment [Member] | Development [Member]
Segment Reporting Information [Line Items]
Total Sales										4,000,000		2,000,000		4,000,000
Real Estate Segment [Member] | Rural [Member]
Segment Reporting Information [Line Items]
Total Sales										37,000,000		39,000,000		33,000,000
Real Estate Segment [Member] | Non-Strategic Timberlands [Member]
Segment Reporting Information [Line Items]
Total Sales										108,000,000	[2]	16,000,000	[2]	34,000,000	[2]
Performance Fibers Segment [Member]
Segment Reporting Information [Line Items]
Total Sales										1,042,000,000		1,093,000,000		1,020,000,000
Performance Fibers Segment [Member] | Cellulose Specialties [Member]
Segment Reporting Information [Line Items]
Total Sales										930,000,000		935,000,000		824,000,000
Performance Fibers Segment [Member] | Viscose/Other [Member]
Segment Reporting Information [Line Items]
Total Sales										39,000,000	[3]	0	[3]	0	[3]
Performance Fibers Segment [Member] | Absorbent Materials [Member]
Segment Reporting Information [Line Items]
Total Sales										73,000,000		158,000,000		196,000,000
Other [Member]
Segment Reporting Information [Line Items]
Total Sales										$ 135,000,000		$ 103,000,000		$ 115,000,000

[1] 2013 included $146 million in sales from the consolidation of the New Zealand JV. See Note 4 — Joint Venture Investment.

[2] 2013 included a fourth quarter sale of approximately 128,000 acres of New York timberland holdings for $57 million.

[3] Beginning in the third quarter of 2013, viscose and commodity grades are being produced as the Company begins its multi-year transition to producing only cellulose specialties. Geographical Operating Information Sales Operating Income Identifiable Assets 2013 2012 2011 2013 2012 2011 2013 2012United States$1,428 $1,379 $1,310 $394 $399 $351 $3,077 $3,022New Zealand280 104 111 29 2 6 609 101Total$1,708 $1,483 $1,421 $423 $401 $357 $3,686 $3,123