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Income Taxes (Detail Textuals) (Canada, USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 04, 2014 | Dec. 29, 2012 | Dec. 31, 2011
Canada |  |  |
Income Tax [Line Items] |  |  |
Income before provision for income taxes for Canadian operations | $ 0.1 | $ 0.1 | $ 0.9

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- Details
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Namespace Prefix: | bxc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + 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.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration