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Retirement and Benefit Plans Level 4 Defined Contribution Plans (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Defined Contribution Plans [Line Items] |  |  |
Defined contribution plan employer matching contribution, percent | 4.00% |  |
Defined contribution plan, additional discretionary contribution | 1.00% |  |
Defined contribution plan matching contribution expense | $ 14.3 | $ 7.7 | $ 6.7
Minimum [Member] |  |  |
Defined Contribution Plans [Line Items] |  |  |
Defined contribution additional performance target contribution | 2.00% |  |
Maximum [Member] |  |  |
Defined Contribution Plans [Line Items] |  |  |
Defined contribution additional performance target contribution | 4.00% |  |

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- Definition Defined contribution additional discretionary contribution for meeting the second, higher performance target + References No definition available. + Details
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Namespace Prefix: | bcc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Defined contribution additional performance target contribution amount that will range from 2% to 4% of the employee's eligible compensation, depending on the employee's years of service. + References No definition available. + Details
Name: | bcc_DefinedContributionAdditionalPerformanceTargetContribution
Namespace Prefix: | bcc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | bcc_DefinedContributionPlansLineItems
Namespace Prefix: | bcc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration