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Transactions With Related Parties Level 4 Transactions with Related Parties (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Related Party Transaction [Line Items]
Revenue from Related Parties					$ 19,772,000	$ 18,763,000	$ 25,259,000
Boise Cascade Co-Owner of LTP [Member]
Related Party Transaction [Line Items]
Variable Interest Entity Ownership Percentage					50.00%
Revenue from Related Parties	5,300,000	4,500,000	11,500,000	9,400,000	19,800,000	18,800,000	20,400,000
Fiber Costs from Related Parties	16,800,000	19,300,000	32,500,000	30,600,000	60,300,000	40,100,000	33,000,000
Boise Inc Co-Owner of LTP [Member]
Related Party Transaction [Line Items]
Variable Interest Entity Ownership Percentage					50.00%
Revenue from Related Parties							4,900,000
Related-party expenses for transportation services							300,000
Related-party outsourcing services agreement expenses							2,364,000
Materials, labor, and other operating expenses from related parties [Member] | Boise Inc Co-Owner of LTP [Member]
Related Party Transaction [Line Items]
Related-party outsourcing services agreement expenses							332,000
Selling and distribution expenses [Member] | Boise Inc Co-Owner of LTP [Member]
Related Party Transaction [Line Items]
Related-party outsourcing services agreement expenses							456,000
General and administrative expenses from related party [Member] | Boise Inc Co-Owner of LTP [Member]
Related Party Transaction [Line Items]
Related-party outsourcing services agreement expenses							$ 1,576,000

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- Definition

Direct costs arising from Transactions with related parties. These costs are categorized as costs of good sold.

+ References

No definition available.

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Related-party expenses for transportation services

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- Definition

Direct costs arising from transactions with related parties who are not affiliates or joint Ventures. These costs are categorized as cost of goods sold.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-07.1(c))

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 07

-Paragraph b

-Subparagraph 1

-Article 6

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 5A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685

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