Other Expense, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Other Expense, Net [Line Items]
DeRidder restructuring	$ 319	[1]	$ 0		$ 1,420	[1]	$ 0
Integration-related and other costs	4,863	[2]	0		8,959	[2]	0
Class action lawsuit settlement	0		0		17,600	[3]	0
Pension curtailment charges	0		7,776	[4]	0		7,776	[4]
Asset disposals and write-offs	2,798		3,243		4,058		6,022
Other	(268)		(191)		(343)		991
Total	7,712		10,828		31,694		14,789
Corporate and Other
Other Expense, Net [Line Items]
Class action lawsuit settlement					$ 17,600	[3]

[1] Costs relate primarily to our plans to convert the Number 3 newsprint machine at our DeRidder, Louisiana, mill to produce lightweight linerboard and corrugating medium and exit the newsprint business in September 2014.

[2] The three and six months ended June 30, 2014, include Boise acquisition integration-related and other costs.

[3] The six months ended June 30, 2014, includes $17.6 million of costs for the settlement of the Kleen Products LLC v Packaging Corp. of America et al class action lawsuit. See Note 18, Commitments, Guarantees, Indemnifications and Legal Proceedings, for more information.

[4] The three and six months ended June 30, 2013, both include $7.8 million of non-cash pension curtailment charges related to pension plan changes in which certain hourly corrugated plant employees transitioned from a defined benefit pension plan to a defined contribution (401k) plan.