Summary of Significant Accounting Policies (Policies)	12 Months Ended
Jan. 03, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation BlueLinx is a wholesale supplier of building products in North America. Our Consolidated Financial Statements include the accounts of BlueLinx Holdings Inc. and its wholly owned subsidiaries. These financial statements have been prepared in accordance with U.S. GAAP. All significant intercompany accounts and transactions have been eliminated.
Use of Estimates	Use of Estimates We are required to make estimates and assumptions when preparing our Consolidated Financial Statements in accordance with U.S. GAAP. These estimates and assumptions affect the amounts reported in our Consolidated Financial Statements and the accompanying notes. Actual results could differ materially from those estimates.
New Accounting Standards	Recently Adopted Accounting Standards In July 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under ASU 2013-11, entities are required to present unrecognized tax benefits as a decrease in a net operating loss, a similar tax loss or a tax credit carryforward, if certain criteria are met. The determination of whether a deferred tax asset is available is based on the unrecognized tax benefit and the deferred tax asset that exists at the reporting date and presumes disallowance of the tax position at the reporting date. The amendment, which did not materially impact our financial statements, is effective for public companies in fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. We adopted this guidance during the first quarter of fiscal 2014. In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. Under ASU 2014-08, only disposals representing a strategic shift in operations should be presented as discontinued operations. Those strategic shifts should have a major effect on the organization’s operations and financial results. Additionally, ASU 2014-08 requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income and expenses of discontinued operations. This accounting standard, which did not materially impact our financial statements, is effective for fiscal and interim periods beginning on or after December 15, 2014. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. We adopted this guidance during the fourth quarter of fiscal 2014. New Accounting Standards In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance in U.S. GAAP and is intended to improve and converge with international standards the financial reporting requirements for revenue from contracts with customers. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. ASU 2014-09 also requires additional disclosures about the nature, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The ASU allows for both retrospective and prospective methods of adoption and is effective for periods beginning after December 15, 2016. The Company is currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements. In September 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements - Going Concern. The ASU requires management to evaluate relevant conditions, events and certain management plans that are known or reasonably knowable as of the evaluation date when determining whether substantial doubt about an entity’s ability to continue as a going concern exists within one year from the date that the financial statements are issued. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for annual and interim periods thereafter. Early adoption is permitted. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements.
Reclassifications	Reclassifications Certain other amounts in the prior years’ consolidated financial statements and notes have been revised to conform to the current year presentation. During fiscal 2014, we separately have detailed certain amounts, which historically had been presented as “Other” changes in the “Cash flows from operating activities.” To conform the historical presentation to the current and future presentation, we separately have detailed similar items, including certain prepaid assets and inventory in prior periods from “Other” changes in the “Cash flows from operating activities.” Additionally, during fiscal 2014, we reclassified certain amounts relating to debt discount, which historically had been presented as “Other non-current assets” to “Long-term debt” on the Consolidated Balance Sheets. To conform the historical presentation to the current and future presentation, we reclassified similar items in prior periods from “Other non-current assets” to “Long-term debt” on the Consolidated Balance Sheets.
Revenue Recognition	Revenue Recognition We recognize revenue when the following criteria are met: persuasive evidence of an agreement exists, delivery has occurred or services have been rendered, our price to the buyer is fixed and determinable, and collectability is reasonably assured. Delivery is not considered to have occurred until the customer takes title and assumes the risks and rewards of ownership. The timing of revenue recognition largely is dependent on shipping terms. Revenue is recorded at the time of shipment for terms designated free on board (“FOB”) shipping point. For sales transactions designated FOB destination, revenue is recorded when the product is delivered to the customer’s delivery site. In addition, we provide inventory to certain customers through pre-arranged agreements on a consignment basis. Customer consigned inventory is maintained and stored by certain customers; however, ownership and risk of loss remains with us. When the consigned inventory is sold by the customer, we recognize revenue on a gross basis. Customer consigned inventory was approximately $6.3 million and $10.1 million at January 3, 2015, and January 4, 2014, respectively. All revenues recognized are net of trade allowances, cash discounts and sales returns. Cash discounts and sales returns are estimated using historical experience. Trade allowances are based on the estimated obligations and historical experience. Adjustments to earnings resulting from revisions to estimates on discounts and returns have been insignificant for each of the reported periods.
Accounts Receivable	Accounts Receivable Accounts receivable are stated at net realizable value, do not bear interest, and consist of amounts owed for orders shipped to customers. Management establishes an overall credit policy for sales to customers. The allowance for doubtful accounts is determined based on a number of factors including specific customer account reviews, historical loss experience, current economic trends, and the creditworthiness of significant customers based on ongoing credit evaluations.
Inventory Valuation	Inventory Valuation The cost of all inventories is determined by the moving average cost method. We have included all material charges directly or indirectly incurred in bringing inventory to its existing condition and location. We evaluate our inventory value at the end of each quarter to ensure that inventory, when viewed by category, is carried at the lower of cost or market. Additionally, we estimate and maintain a reserve for damaged, excess and obsolete inventory
Consideration Received from Vendors and Paid to Customers	Consideration Received from Vendors and Paid to Customers Each year, we enter into agreements with many of our vendors providing for inventory purchase rebates, generally based on achievement of specified volume purchasing levels. We also receive rebates related to price protection and various marketing allowances that are common industry practice. We accrue for the receipt of vendor rebates based on purchases, and also reduce inventory to reflect the net acquisition cost (purchase price less expected purchase rebates). As of January 3, 2015, and January 4, 2014, the vendor rebate receivable totaled $7.1 million and $7.6 million, respectively. Adjustments to earnings resulting from revisions to rebate estimates have been immaterial. In addition, we enter into agreements with many of our customers to offer customer rebates, generally based on achievement of specified sales levels and various marketing allowances that are common industry practice. We accrue for the payment of customer rebates based on sales to the customer, and also reduce sales to reflect the net sales (sales price less expected customer rebates). As of January 3, 2015, and January 4, 2014, the customer rebate payable totaled $6.4 million and $6.3 million, respectively. Adjustments to earnings resulting from revisions to rebate estimates have been immaterial.
Shipping and Handling	Shipping and Handling Amounts billed to customers in sales transactions related to shipping and handling are classified as revenue. Shipping and handling costs included in “Selling, general, and administrative” expenses were $91.8 million, $99.7 million, and $91.2 million for fiscal 2014, fiscal 2013, and fiscal 2012, respectively.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred. Advertising expenses of $0.6 million, $1.2 million, and $1.1 million were included in “Selling, general and administrative” expenses for fiscal 2014, fiscal 2013, and fiscal 2012, respectively.
Property, Plant, and Equipment	Property, Plant, and Equipment Property, plant, and equipment are recorded at cost. Lease obligations for which we assume or retain substantially all the property rights and risks of ownership are capitalized. Amortization of assets recorded under capital leases is included in “Depreciation and amortization” expense. Replacements of major units of property are capitalized and the replaced properties are retired. Replacements of minor components of property and repair and maintenance costs are charged to expense as incurred. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Upon retirement or disposition of assets, cost and accumulated depreciation are removed from the related accounts and any gain or loss is included in income.
Share-Based Compensation	Share-Based Compensation We recognize compensation expense equal to the grant-date fair value for all share-based payment awards that are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire award, unless the awards are subject to market or performance conditions, in which case we recognize compensation expense over the requisite service period of each separate vesting tranche to the extent market and performance conditions are considered probable. The calculation of fair value related to share-based compensation is subject to certain assumptions discussed in more detail in Note 10. Management updates such estimates when circumstances warrant. All compensation expense related to our share-based payment awards is recorded in “Selling, general and administrative” expense in the Consolidated Statements of Operations and Comprehensive Income (Loss).
Income Taxes	Income Taxes We account for deferred income taxes using the liability method. Accordingly, we recognize deferred tax assets and liabilities based on the tax effects of temporary differences between the financial statement and tax bases of assets and liabilities, as measured by current enacted tax rates. Deferred tax assets and liabilities are recorded net, as current and noncurrent. A valuation allowance is recorded to reduce deferred tax assets when necessary. For additional information about our income taxes, see Note 5.
Self-insurance	Self-Insurance The Company is self-insured, up to certain limits, for most workers’ compensation losses, employee health benefits, general liability, and automotive liability losses, all subject to varying “per occurrence” retentions or deductible limits. The Company provides for estimated costs to settle both known claims and claims incurred but not yet reported. Liabilities associated with these claims are estimated, in part, by considering the frequency and severity of historical claims, both specific to us, as well as industry-wide loss experience and other actuarial assumptions. We determine our insurance obligations with the assistance of actuarial firms. Since there are many estimates and assumptions involved in recording insurance liabilities and in the case of workers’ compensation a significant period of time elapses before the ultimate resolution of claims, differences between actual future events and prior estimates and assumptions could result in adjustments to these liabilities.
Restricted Cash	Restricted Cash Restricted cash primarily includes amounts held in escrow related to our mortgage and insurance for workers’ compensation, auto liability, and general liability. Restricted cash is included in “Other current assets” and “Other non-current assets” on the accompanying Consolidated Balance Sheets.
Restructuring Charges	Restructuring Charges We account for exit and disposal costs by recognizing a liability for costs associated with an exit or disposal activity at fair value in the period in which it is incurred, or when the we cease using the right conveyed by a contract (i.e., the right to use a leased property). We account for severance and outplacement costs by recognizing a liability for employees’ rights to post-employment benefits when management has committed to a plan, due to the existence of a post-employment benefit agreement. These costs are included in “Selling, general, and administrative” expenses in the Consolidated Statements of Operations and Comprehensive Income (Loss), and in “Accrued compensation” on the Consolidated Balance Sheets.
Fair Value Measurements	Fair Value Measurements We determine a fair value measurement based on the assumptions a market participant would use in pricing an asset or liability. The fair value measurement guidance established a three level hierarchy making a distinction between market participant assumptions based on (i) unadjusted quoted prices for identical assets or liabilities in an active market (Level 1), (ii) quoted prices in markets that are not active or inputs that are observable either directly or indirectly for substantially the full term of the asset or liability (Level 2), and (iii) prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement (Level 3).
Income (Loss) per Common Share	Income (Loss) per Common Share We calculate our basic income (loss) per share by dividing net income (loss) by the weighted average number of common shares and participating securities outstanding for the period. Restricted stock granted by us to certain management employees and non-employee directors participate in dividends on the same basis as common shares. The unvested restricted stock contains non-forfeitable rights to dividends or dividend equivalents. As a result, these share-based awards meet the definition of a participating security and are included in the weighted average number of common shares outstanding, pursuant to the two-class method, for the periods that present net income. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jan. 03, 2015

BlueLinx is a wholesale supplier of building products in North America. Our Consolidated Financial Statements include the accounts of BlueLinx Holdings Inc. and its wholly owned subsidiaries. These financial statements have been prepared in accordance with U.S. GAAP. All significant intercompany accounts and transactions have been eliminated.

Use of Estimates

We are required to make estimates and assumptions when preparing our Consolidated Financial Statements in accordance with U.S. GAAP. These estimates and assumptions affect the amounts reported in our Consolidated Financial Statements and the accompanying notes. Actual results could differ materially from those estimates.

New Accounting Standards

Recently Adopted Accounting Standards

In July 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. Under ASU 2013-11, entities are required to present unrecognized tax benefits as a decrease in a net operating loss, a similar tax loss or a tax credit carryforward, if certain criteria are met. The determination of whether a deferred tax asset is available is based on the unrecognized tax benefit and the deferred tax asset that exists at the reporting date and presumes disallowance of the tax position at the reporting date. The amendment, which did not materially impact our financial statements, is effective for public companies in fiscal years, and interim periods within those years, beginning after December 15, 2013. Early adoption is permitted. We adopted this guidance during the first quarter of fiscal 2014.

In April 2014, the FASB issued ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. Under ASU 2014-08, only disposals representing a strategic shift in operations should be presented as discontinued operations. Those strategic shifts should have a major effect on the organization’s operations and financial results. Additionally, ASU 2014-08 requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income and expenses of discontinued operations. This accounting standard, which did not materially impact our financial statements, is effective for fiscal and interim periods beginning on or after December 15, 2014. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. We adopted this guidance during the fourth quarter of fiscal 2014.

New Accounting Standards

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which will replace most existing revenue recognition guidance in U.S. GAAP and is intended to improve and converge with international standards the financial reporting requirements for revenue from contracts with customers. The core principle of the ASU is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. ASU 2014-09 also requires additional disclosures about the nature, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments. The ASU allows for both retrospective and prospective methods of adoption and is effective for periods beginning after December 15, 2016. The Company is currently evaluating the impact that the adoption of this ASU will have on our consolidated financial statements.

In September 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements - Going Concern. The ASU requires management to evaluate relevant conditions, events and certain management plans that are known or reasonably knowable as of the evaluation date when determining whether substantial doubt about an entity’s ability to continue as a going concern exists within one year from the date that the financial statements are issued. ASU 2014-15 is effective for annual periods ending after December 15, 2016, and for annual and interim periods thereafter. Early adoption is permitted. The Company is currently evaluating the impact the adoption of this ASU will have on its consolidated financial statements.

Reclassifications

Certain other amounts in the prior years’ consolidated financial statements and notes have been revised to conform to the current year presentation. During fiscal 2014, we separately have detailed certain amounts, which historically had been presented as “Other” changes in the “Cash flows from operating activities.” To conform the historical presentation to the current and future presentation, we separately have detailed similar items, including certain prepaid assets and inventory in prior periods from “Other” changes in the “Cash flows from operating activities.”

Additionally, during fiscal 2014, we reclassified certain amounts relating to debt discount, which historically had been presented as “Other non-current assets” to “Long-term debt” on the Consolidated Balance Sheets. To conform the historical presentation to the current and future presentation, we reclassified similar items in prior periods from “Other non-current assets” to “Long-term debt” on the Consolidated Balance Sheets.

Revenue Recognition

We recognize revenue when the following criteria are met: persuasive evidence of an agreement exists, delivery has occurred or services have been rendered, our price to the buyer is fixed and determinable, and collectability is reasonably assured. Delivery is not considered to have occurred until the customer takes title and assumes the risks and rewards of ownership. The timing of revenue recognition largely is dependent on shipping terms. Revenue is recorded at the time of shipment for terms designated free on board (“FOB”) shipping point. For sales transactions designated FOB destination, revenue is recorded when the product is delivered to the customer’s delivery site.

In addition, we provide inventory to certain customers through pre-arranged agreements on a consignment basis. Customer consigned inventory is maintained and stored by certain customers; however, ownership and risk of loss remains with us. When the consigned inventory is sold by the customer, we recognize revenue on a gross basis. Customer consigned inventory was approximately $6.3 million and $10.1 million at January 3, 2015, and January 4, 2014, respectively.

All revenues recognized are net of trade allowances, cash discounts and sales returns. Cash discounts and sales returns are estimated using historical experience. Trade allowances are based on the estimated obligations and historical experience. Adjustments to earnings resulting from revisions to estimates on discounts and returns have been insignificant for each of the reported periods.

Accounts Receivable

Accounts receivable are stated at net realizable value, do not bear interest, and consist of amounts owed for orders shipped to customers. Management establishes an overall credit policy for sales to customers. The allowance for doubtful accounts is determined based on a number of factors including specific customer account reviews, historical loss experience, current economic trends, and the creditworthiness of significant customers based on ongoing credit evaluations.

Inventory Valuation

The cost of all inventories is determined by the moving average cost method. We have included all material charges directly or indirectly incurred in bringing inventory to its existing condition and location. We evaluate our inventory value at the end of each quarter to ensure that inventory, when viewed by category, is carried at the lower of cost or market. Additionally, we estimate and maintain a reserve for damaged, excess and obsolete inventory

Consideration Received from Vendors and Paid to Customers

Each year, we enter into agreements with many of our vendors providing for inventory purchase rebates, generally based on achievement of specified volume purchasing levels. We also receive rebates related to price protection and various marketing allowances that are common industry practice. We accrue for the receipt of vendor rebates based on purchases, and also reduce inventory to reflect the net acquisition cost (purchase price less expected purchase rebates). As of January 3, 2015, and January 4, 2014, the vendor rebate receivable totaled $7.1 million and $7.6 million, respectively. Adjustments to earnings resulting from revisions to rebate estimates have been immaterial.

In addition, we enter into agreements with many of our customers to offer customer rebates, generally based on achievement of specified sales levels and various marketing allowances that are common industry practice. We accrue for the payment of customer rebates based on sales to the customer, and also reduce sales to reflect the net sales (sales price less expected customer rebates). As of January 3, 2015, and January 4, 2014, the customer rebate payable totaled $6.4 million and $6.3 million, respectively. Adjustments to earnings resulting from revisions to rebate estimates have been immaterial.

Shipping and Handling

Amounts billed to customers in sales transactions related to shipping and handling are classified as revenue. Shipping and handling costs included in “Selling, general, and administrative” expenses were $91.8 million, $99.7 million, and $91.2 million for fiscal 2014, fiscal 2013, and fiscal 2012, respectively.

Advertising Costs

Advertising costs are expensed as incurred. Advertising expenses of $0.6 million, $1.2 million, and $1.1 million were included in “Selling, general and administrative” expenses for fiscal 2014, fiscal 2013, and fiscal 2012, respectively.

Property, Plant, and Equipment

Property, plant, and equipment are recorded at cost. Lease obligations for which we assume or retain substantially all the property rights and risks of ownership are capitalized. Amortization of assets recorded under capital leases is included in “Depreciation and amortization” expense. Replacements of major units of property are capitalized and the replaced properties are retired. Replacements of minor components of property and repair and maintenance costs are charged to expense as incurred.

Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Upon retirement or disposition of assets, cost and accumulated depreciation are removed from the related accounts and any gain or loss is included in income.

Share-Based Compensation

We recognize compensation expense equal to the grant-date fair value for all share-based payment awards that are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire award, unless the awards are subject to market or performance conditions, in which case we recognize compensation expense over the requisite service period of each separate vesting tranche to the extent market and performance conditions are considered probable. The calculation of fair value related to share-based compensation is subject to certain assumptions discussed in more detail in Note 10. Management updates such estimates when circumstances warrant. All compensation expense related to our share-based payment awards is recorded in “Selling, general and administrative” expense in the Consolidated Statements of Operations and Comprehensive Income (Loss).

Income Taxes

We account for deferred income taxes using the liability method. Accordingly, we recognize deferred tax assets and liabilities based on the tax effects of temporary differences between the financial statement and tax bases of assets and liabilities, as measured by current enacted tax rates. Deferred tax assets and liabilities are recorded net, as current and noncurrent. A valuation allowance is recorded to reduce deferred tax assets when necessary. For additional information about our income taxes, see Note 5.

Self-insurance

Self-Insurance

The Company is self-insured, up to certain limits, for most workers’ compensation losses, employee health benefits, general liability, and automotive liability losses, all subject to varying “per occurrence” retentions or deductible limits. The Company provides for estimated costs to settle both known claims and claims incurred but not yet reported. Liabilities associated with these claims are estimated, in part, by considering the frequency and severity of historical claims, both specific to us, as well as industry-wide loss experience and other actuarial assumptions. We determine our insurance obligations with the assistance of actuarial firms. Since there are many estimates and assumptions involved in recording insurance liabilities and in the case of workers’ compensation a significant period of time elapses before the ultimate resolution of claims, differences between actual future events and prior estimates and assumptions could result in adjustments to these liabilities.

Restricted Cash

Restricted cash primarily includes amounts held in escrow related to our mortgage and insurance for workers’ compensation, auto liability, and general liability. Restricted cash is included in “Other current assets” and “Other non-current assets” on the accompanying Consolidated Balance Sheets.

Restructuring Charges

We account for exit and disposal costs by recognizing a liability for costs associated with an exit or disposal activity at fair value in the period in which it is incurred, or when the we cease using the right conveyed by a contract (i.e., the right to use a leased property). We account for severance and outplacement costs by recognizing a liability for employees’ rights to post-employment benefits when management has committed to a plan, due to the existence of a post-employment benefit agreement. These costs are included in “Selling, general, and administrative” expenses in the Consolidated Statements of Operations and Comprehensive Income (Loss), and in “Accrued compensation” on the Consolidated Balance Sheets.

Fair Value Measurements

We determine a fair value measurement based on the assumptions a market participant would use in pricing an asset or liability. The fair value measurement guidance established a three level hierarchy making a distinction between market participant assumptions based on (i) unadjusted quoted prices for identical assets or liabilities in an active market (Level 1), (ii) quoted prices in markets that are not active or inputs that are observable either directly or indirectly for substantially the full term of the asset or liability (Level 2), and (iii) prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement (Level 3).

Income (Loss) per Common Share

We calculate our basic income (loss) per share by dividing net income (loss) by the weighted average number of common shares and participating securities outstanding for the period. Restricted stock granted by us to certain management employees and non-employee directors participate in dividends on the same basis as common shares. The unvested restricted stock contains non-forfeitable rights to dividends or dividend equivalents. As a result, these share-based awards meet the definition of a participating security and are included in the weighted average number of common shares outstanding, pursuant to the two-class method, for the periods that present net income. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders.