Basis of Presentation (Policies)	6 Months Ended
Jun. 28, 2025
Accounting Policies [Abstract]
Basis of Presentation	BlueLinx Holdings Inc., including consolidated subsidiaries (collectively, the “Company”), is a leading wholesale distributor of residential and commercial building products in the United States. The Company is a two-step distributor and purchases products from manufacturers and distributes those products to dealers and other suppliers in local markets, who then sell those products to end users. The Company carries a broad portfolio of both branded and private-label stock keeping units (“SKUs”) across two principal product categories: specialty products and structural products. Specialty products include items such as engineered wood, siding, moulding and millwork, outdoor living, specialty lumber and panels, and industrial products. Structural products include items such as lumber, plywood, oriented strand board, rebar, and remesh. The Company also provides a wide range of value-added services and solutions aimed at relieving distribution and logistics challenges for its customers and suppliers, while enhancing their marketing and inventory management capabilities. The Company’s unaudited condensed consolidated financial statements and accompanying notes have been prepared using generally accepted accounting principles in the United States (“GAAP”) and the interim reporting guidance of the U.S. Securities and Exchange Commission (“SEC”). The Company is composed of a single reportable segment for financial reporting purposes. The Company’s consolidated balance sheet as of December 28, 2024 contained herein was derived from the audited consolidated balance sheet included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2024 (the “2024 Form 10-K”), as filed with the SEC on February 18, 2025. In the opinion of the Company’s management, the unaudited condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the Company’s results of operations, financial position, and cash flows for the reporting periods presented. The Company has condensed or omitted certain notes and other information from the unaudited condensed consolidated financial statements presented in this report. Therefore, these condensed financial statements and accompanying notes should be read in conjunction with the Company’s 2024 Form 10-K. The results for the three and six fiscal months ended June 28, 2025 are not necessarily indicative of results that may be expected for the full fiscal year ending January 3, 2026, or any other interim period. For the fiscal reporting periods included in the unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q, the Company did not have any items of other comprehensive income (loss), nor did the Company have any accumulated other comprehensive income (loss). The Company operates on a 5-4-4 fiscal calendar and its fiscal year ends on the Saturday closest to December 31st of each year and may comprise 53 weeks in certain years. Fiscal 2025 contains 53 weeks and will end on January 3, 2026. Fiscal 2024 contained 52 weeks and ended on December 28, 2024. During the first quarter of fiscal 2025, the Company settled certain of the initial insurance claims related to property damaged or destroyed at its Erwin, Tennessee owned facility in late third quarter 2024 due to Hurricane Helene. The Company received insurance proceeds that exceeded the carrying values of the damaged or destroyed assets by $2.4 million, and this amount is included in Other Operating, net on the Company’s unaudited condensed consolidated statement of operations for the six fiscal months ended June 28, 2025.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates based on assumptions about current and, for some estimates, future economic and market conditions, which affect reported amounts and related disclosures in the Company’s financial statements. Although current estimates contemplate current and expected future conditions, as applicable, it is reasonably possible that actual conditions could differ from management’s expectations, which could materially affect the Company’s results of operations and financial position.
Recent Accounting Pronouncements - Not Yet Adopted	Recent Accounting Pronouncements - Not Yet Adopted Income Tax Disclosure Improvement. On December 14, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Improvements to Income Tax Disclosures (“ASU 2023-09”), which establishes new income tax disclosure requirements in addition to modifying and eliminating certain existing requirements. Under the new guidance, entities must consistently categorize and provide greater disaggregation of information in the rate reconciliation. They must also further disaggregate income taxes paid. The ASU’s disclosure requirements apply to all entities subject to Accounting Standards Codification (“ASC”) No. 740, Income Taxes (“ASC 740”). The overall objective of these disclosure requirements is for an entity, particularly an entity operating in multiple jurisdictions, to disclose sufficient information to enable users of financial statements to understand the nature and magnitude of factors contributing to the difference between the effective income tax rate and the statutory income tax rate. ASU 2023-09 will be effective for the Company for the fiscal 2025 annual reporting period. Since this new ASU addresses only disclosures, the Company does not expect the adoption of this ASU to have any material effects on its financial condition, results of operations or cash flows. The Company is currently evaluating any new disclosures that may be required upon adoption of ASU 2023-09. Costs and Expenses Disclosures. On November 4, 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”), which establishes new disaggregation disclosure requirements for certain costs and expenses in the notes to the consolidated financial statements. Under the new guidance, an entity must provide details of the components of its expense captions from continuing operations presented on the face of the statement of operations as well as a qualitative description of the amounts remaining that are not separately disaggregated quantitatively. Relevant disclosure categories include purchases of inventory, employee compensation, depreciation and intangible asset amortization. An entity must also disclose the total amount of selling expenses, and in annual reports, its definition thereof. The disclosure of these costs and expenses will be required in addition to and irrespective of their inclusion in other disclosures. ASU 2024-03 will be effective for the Company for the fiscal 2027 annual reporting period and for interim periods beginning in fiscal 2028. Since this new ASU addresses only disclosures, the Company does not expect its adoption to have any material effects on its financial condition, results of operations or cash flows. The Company is currently evaluating the new disclosures that will be required upon adoption of ASU 2024-03.
Earnings Per Share	The Company calculates basic earnings per share by dividing net income for the period by the weighted average number of common shares outstanding for the period. For rounding purposes when calculating earnings per share, the Company’s policy is to round down to the whole cent. Diluted earnings per share are calculated using the treasury stock method whereby net income for the period is divided by the weighted average number of common shares outstanding for the period plus the dilutive effect, if any, of shares of stock associated with unvested share-based grants. However, for performance-based share-based grants, the dilutive effect is included only for grants where the performance goals have been achieved.

Basis of Presentation (Policies)

6 Months Ended

Jun. 28, 2025

BlueLinx Holdings Inc., including consolidated subsidiaries (collectively, the “Company”), is a leading wholesale distributor of residential and commercial building products in the United States. The Company is a two-step distributor and purchases products from manufacturers and distributes those products to dealers and other suppliers in local markets, who then sell those products to end users. The Company carries a broad portfolio of both branded and private-label stock keeping units (“SKUs”) across two principal product categories: specialty products and structural products. Specialty products include items such as engineered wood, siding, moulding and millwork, outdoor living, specialty lumber and panels, and industrial products. Structural products include items such as lumber, plywood, oriented strand board, rebar, and remesh. The Company also provides a wide range of value-added services and solutions aimed at relieving distribution and logistics challenges for its customers and suppliers, while enhancing their marketing and inventory management capabilities.

The Company’s unaudited condensed consolidated financial statements and accompanying notes have been prepared using generally accepted accounting principles in the United States (“GAAP”) and the interim reporting guidance of the U.S. Securities and Exchange Commission (“SEC”). The Company is composed of a single reportable segment for financial reporting purposes. The Company’s consolidated balance sheet as of December 28, 2024 contained herein was derived from the audited consolidated balance sheet included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 28, 2024 (the “2024 Form 10-K”), as filed with the SEC on February 18, 2025. In the opinion of the Company’s management, the unaudited condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the Company’s results of operations, financial position, and cash flows for the reporting periods presented.

The Company has condensed or omitted certain notes and other information from the unaudited condensed consolidated financial statements presented in this report. Therefore, these condensed financial statements and accompanying notes should be read in conjunction with the Company’s 2024 Form 10-K. The results for the three and six fiscal months ended June 28, 2025 are not necessarily indicative of results that may be expected for the full fiscal year ending January 3, 2026, or any other interim period. For the fiscal reporting periods included in the unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q, the Company did not have any items of other comprehensive income (loss), nor did the Company have any accumulated other comprehensive income (loss).

The Company operates on a 5-4-4 fiscal calendar and its fiscal year ends on the Saturday closest to December 31st of each year and may comprise 53 weeks in certain years. Fiscal 2025 contains 53 weeks and will end on January 3, 2026. Fiscal 2024 contained 52 weeks and ended on December 28, 2024.

During the first quarter of fiscal 2025, the Company settled certain of the initial insurance claims related to property damaged or destroyed at its Erwin, Tennessee owned facility in late third quarter 2024 due to Hurricane Helene. The Company received insurance proceeds that exceeded the carrying values of the damaged or destroyed assets by $2.4 million, and this amount is included in Other Operating, net on the Company’s unaudited condensed consolidated statement of operations for the six fiscal months ended June 28, 2025.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires the Company’s management to make estimates based on assumptions about current and, for some estimates, future economic and market conditions, which affect reported amounts and related disclosures in the Company’s financial statements. Although current estimates contemplate current and expected future conditions, as applicable, it is reasonably possible that actual conditions could differ from management’s expectations, which could materially affect the Company’s results of operations and financial position.

Recent Accounting Pronouncements - Not Yet Adopted

Income Tax Disclosure Improvement. On December 14, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, Improvements to Income Tax Disclosures (“ASU 2023-09”), which establishes new income tax disclosure requirements in addition to modifying and eliminating certain existing requirements. Under the new guidance, entities must consistently categorize and provide greater disaggregation of information in the rate reconciliation. They must also further disaggregate income taxes paid. The ASU’s disclosure requirements apply to all entities subject to Accounting Standards Codification (“ASC”) No. 740, Income Taxes (“ASC 740”). The overall objective of these disclosure requirements is for an entity, particularly an entity operating in multiple jurisdictions, to disclose sufficient information to enable users of financial statements to understand the nature and magnitude of factors contributing to the difference between the effective income tax rate and the statutory income tax rate. ASU 2023-09 will be effective for the Company for the fiscal 2025 annual reporting period. Since this new ASU addresses only disclosures, the Company does not expect the adoption of this ASU to have any material effects on its financial condition, results of operations or cash flows. The Company is currently evaluating any new disclosures that may be required upon adoption of ASU 2023-09.

Costs and Expenses Disclosures. On November 4, 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”), which establishes new disaggregation disclosure requirements for certain costs and expenses in the notes to the consolidated financial statements. Under the new guidance, an entity must provide details of the components of its expense captions from continuing operations presented on the face of the statement of operations as well as a qualitative description of the amounts remaining that are not separately disaggregated quantitatively. Relevant disclosure categories include purchases of inventory, employee compensation, depreciation and intangible asset amortization. An entity must also disclose the total amount of selling expenses, and in annual reports, its definition thereof. The disclosure of these costs and expenses will be required in addition to and irrespective of their inclusion in other disclosures. ASU 2024-03 will be effective for the Company for the fiscal 2027 annual reporting period and for interim periods beginning in fiscal 2028. Since this new ASU addresses only disclosures, the Company does not expect its adoption to have any material effects on its financial condition, results of operations or cash flows. The Company is currently evaluating the new disclosures that will be required upon adoption of ASU 2024-03.

Earnings Per Share

The Company calculates basic earnings per share by dividing net income for the period by the weighted average number of common shares outstanding for the period. For rounding purposes when calculating earnings per share, the Company’s policy is to round down to the whole cent.

Diluted earnings per share are calculated using the treasury stock method whereby net income for the period is divided by the weighted average number of common shares outstanding for the period plus the dilutive effect, if any, of shares of stock associated with unvested share-based grants. However, for performance-based share-based grants, the dilutive effect is included only for grants where the performance goals have been achieved.