Segment Information Reportable Segments Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Net sales	$ 462,701	$ 480,233	$ 473,572	$ 457,798	$ 466,391	$ 501,125	$ 494,627	$ 465,830	$ 1,874,304		$ 1,927,973		$ 1,372,965
Income from operations	35,480	39,762	44,497	25,648	32,723	25,383	33,793	23,546	145,387		115,445		98,767
Depreciation and amortization									79,333		76,933		47,728
Assets	1,633,456				1,571,318				1,633,456		1,571,318		1,545,336
Capital expenditures									207,115		137,743		47,033
Consumer Products
Segment Reporting Information [Line Items]
Net sales									1,134,556		1,092,133		570,047
Income from operations									93,347		42,806		80,791
Depreciation and amortization									54,547		50,391		16,994
Assets	1,178,438				1,081,988				1,178,438		1,081,988		969,450
Capital expenditures									183,330		117,059		33,902
Pulp and Paperboard
Segment Reporting Information [Line Items]
Net sales									739,748		835,840		802,918
Income from operations									103,910	[1]	92,827	[1]	64,869	[1]
Depreciation and amortization									23,113		26,073		28,658
Assets	344,614				355,886				344,614		355,886		377,674
Capital expenditures									19,954		15,355		10,208
Operating Segments
Segment Reporting Information [Line Items]
Income from operations									197,257		135,633		145,660
Assets	1,523,052				1,437,874				1,523,052		1,437,874		1,347,124
Capital expenditures									203,284		132,414		44,110
Corporate and eliminations
Segment Reporting Information [Line Items]
Income from operations									(51,870)	[1]	(20,188)	[1]	(46,893)	[1]
Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization									1,673		469		2,076
Assets	110,404				133,444				110,404		133,444		198,212
Capital expenditures									$ 3,831		$ 5,329		$ 2,923

[1] Results for Pulp and Paperboard for 2011 included additional expenses associated with the sale of the Lewiston, Idaho sawmill, which were partially offset by LIFO inventory liquidation and other adjustments recorded at the corporate level.