XML 86 R36.htm IDEA: XBRL DOCUMENT
v3.19.2

Revenue Recognition (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 29, 2019 USD ($) day | Jun. 30, 2018 USD ($) | Jun. 29, 2019 USD ($) day | Jun. 30, 2018 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |
Standard terms of payment, number of days | day | 10 |  | 10 |
Net sales | $ 706,448 | $ 892,952 | $ 1,345,149 | $ 1,330,439
Warehouse |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 577,000 | 704,328 | 1,081,274 | 1,037,634
Direct |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 122,262 | 165,630 | 245,667 | 248,573
Reload and service revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 16,617 | 34,914 | 35,522 | 63,184
Customer discounts and rebates |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | (9,431) | (11,920) | (17,314) | (18,952)
Structural products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 225,056 | 345,878 | 422,551 | 522,359
Specialty products and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 481,392 | $ 547,074 | $ 922,598 | $ 808,080

X
- Definition Contract With Customer, Standard Terms Of Payment, Number Of Days + References No definition available. + Details
Name: | bxc_ContractWithCustomerStandardTermsOfPaymentNumberOfDays
Namespace Prefix: | bxc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=bxc_SalesChannelWarehouseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=bxc_SalesChannelDirectMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=bxc_SalesChannelReloadandServiceRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=bxc_AdjustmentForSalesDiscountsReturnsAndAllowancesGoodsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=bxc_StructuralProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=bxc_SpecialtyProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |