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Revolving Credit Facilities (Detail Textuals) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended |  |  |  | 0 Months Ended |  |
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Mar. 29, 2013 U.S Revolving credit facility Wells Fargo Bank | Mar. 30, 2013 U.S Revolving credit facility Wells Fargo Bank | Mar. 30, 2013 U.S Revolving credit facility Wells Fargo Bank | Dec. 29, 2012 U.S Revolving credit facility Wells Fargo Bank | Mar. 30, 2013 U.S Letters of credit Wells Fargo Bank | Dec. 29, 2012 U.S Letters of credit Wells Fargo Bank | Aug. 12, 2011 BlueLinx Building Products Canada Ltd. ("BlueLinx Canada") Canada Revolving credit facility CIBC Asset-Based Lending Inc. | Mar. 30, 2013 BlueLinx Building Products Canada Ltd. ("BlueLinx Canada") Canada Revolving credit facility CIBC Asset-Based Lending Inc. | Dec. 29, 2012 BlueLinx Building Products Canada Ltd. ("BlueLinx Canada") Canada Revolving credit facility CIBC Asset-Based Lending Inc.
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Date of the final maturity of revolving credit facility |  |  | Apr. 15, 2016 |  |  |  | Aug. 12, 2014 |  |
U.S. revolving credit facility maximum borrowing capacity less the uncommitted accordion feature |  | $ 422.5 | $ 422.5 |  |  |  |  |  |
Additional uncommitted accordion U.S. credit facility |  |  | 100 |  |  |  |  |  |
Revolving credit facility maximum borrowing capacity |  | 522.5 | 522.5 |  |  |  |  |  |
Debt fees | 2.8 |  |  |  |  |  |  |  |
Gross proceeds from fully subscribed rights offering |  | 40 |  |  |  |  |  |  |
Rights offering fees paid |  | 0.1 |  |  |  |  |  |  |
Net proceeds from rights offering |  | 38.6 |  |  |  |  |  |  |
Expenses incurred on rights offering |  | 1.4 |  |  |  |  |  |  |
Shares issued to stockholders on rights offering |  | 22.9 |  |  |  |  |  |  |
Borrowing balance of credit facility |  | 240.4 | 240.4 | 169.5 | 4.5 | 4.5 |  | 2.0 | 1.9
Revolving credit facility excess availability |  | 123.4 | 123.4 | 86.0 |  |  |  | 2.2 | 2.0
Interest rate on revolving credit facility |  | 4.00% | 4.00% | 4.10% |  |  |  | 4.00% | 4.00%
Collateralized letter of credit securing certain insurance obligations |  |  |  |  | 1.5 |  |  |  |
Percentage of revolving credit facility excess availability threshold |  | 12.50% | 12.50% |  |  |  |  |  |
Minimum amount of excess availability required to avoid lender dominion of our accounts |  | 35 | 35 |  |  |  |  |  |
Minimum amount of excess availability required to avoid lender dominion of our accounts as a percentage of the revolving credit facility balance |  |  | 15.00% |  |  |  |  |  |
Lowest level of fiscal month-end availability revolving credit facility |  | 85.9 | 85.9 |  |  |  |  |  |
Revolving credit facility fixed charge coverage ratio requirement |  |  | 1.1 to 1.0 |  |  |  |  |  |
Convenant description |  |  | As of March 30, 2013, our U.S. revolving credit facility, as amended, contains customary negative covenants and restrictions for asset based loans, including a requirement that we maintain a fixed charge coverage ratio of 1.1 to 1.0 in the event our excess availability falls below the greater of $30 million or the amount equal to 12.5% of the lesser of the borrowing base or $422.5 million (the "Excess Availability Threshold"). |  |  |  |  |  |
Canadian minimum adjusted tangible net worth covenant |  |  |  |  |  |  |  | $ 3.9 |
Canadian capital expenditures maximum percentage limit covenant |  |  |  |  |  |  |  | 120.00% |

X
- Definition Collateralized letter of credit securing certain insurance obligations. + References No definition available. + Details
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Balance Type: | credit
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X
- Definition Represents expenses incurred on rights offering during the period. + References No definition available. + Details
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- Definition The cash inflow associated with the amount received from right offerings during the period. + References No definition available. + Details
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- Definition Line of credit accordion U.S credit facility. + References No definition available. + Details
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- Definition Canadian capital expenditure maximum percentage limit required by the lender. + References No definition available. + Details
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- Definition Represents minimum amount of excess availability required to avoid lender dominion of our accounts. + References No definition available. + Details
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- Definition Represents minimum amount of excess availability required to avoid lender dominion of our accounts as a percentage of the revolving credit facility balance. + References No definition available. + Details
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- Definition Minimum level of fiscal month end availability in the last three years. + References No definition available. + Details
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- Definition The lowest amount of net worth (total assets minus total liabilities) required by lender. + References No definition available. + Details
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- Definition Net proceeds from rights offering. + References No definition available. + Details
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- Definition Percentage of revolving credit facility excess availability threshold. + References No definition available. + Details
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- Definition Revolving credit facility excess availability threshold amount + References No definition available. + Details
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- Definition Revolving credit facility fixed charge coverage ratio requirement. + References No definition available. + Details
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- Definition Represents rights offering fees paid. + References No definition available. + Details
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- Definition Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees). + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Description of the conditions for borrowing under the credit facility including the nature of any restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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