BlueLinx (BXC) 10-Q 29 Oct 24 2024 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 28, 2024	Oct. 25, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 28, 2024
Document Transition Report	false
Entity File Number	001-32383
Entity Registrant Name	BlueLinx Holdings Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0627356
Entity Address, Address Line One	1950 Spectrum Circle
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Marietta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30067
City Area Code	770
Local Phone Number	953-7000
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BXC
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		8,380,695
Entity Central Index Key	0001301787
Current Fiscal Year Date	--12-28
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 747,288	$ 809,981	$ 2,241,895	$ 2,423,852
Cost of products sold	621,619	670,735	1,866,101	2,015,264
Gross profit	125,669	139,246	375,794	408,588
Operating expenses (income):
Selling, general, and administrative	92,210	91,354	272,913	271,278
Depreciation and amortization	9,530	8,089	29,083	23,758
Amortization of deferred gains on real estate	(984)	(984)	(2,952)	(2,952)
Other operating expenses, net	888	1,131	1,210	5,240
Total operating expenses	101,644	99,590	300,254	297,324
Operating income	24,025	39,656	75,540	111,264
Non-operating expenses:
Interest expense, net	4,619	5,577	14,044	19,575
Settlement of defined benefit pension plan	(2,226)	0	(2,226)	0
Other expense, net	0	594	0	1,782
Income before provision for income taxes	21,632	33,485	63,722	89,907
Provision for income taxes	5,616	9,103	15,878	23,247
Net income	$ 16,016	$ 24,382	$ 47,844	$ 66,660
Basic earnings per share (in dollars per share)	$ 1.88	$ 2.72	$ 5.54	$ 7.39
Diluted earnings per share (in dollars per share)	$ 1.87	$ 2.71	$ 5.53	$ 7.38
Comprehensive income:
Net income	$ 16,016	$ 24,382	$ 47,844	$ 66,660
Other comprehensive income:
Amortization of unrecognized pension gain, net of tax	0	225	0	689
Other	0	0	0	(22)
Total other comprehensive income	0	225	0	667
Comprehensive income	$ 16,016	$ 24,607	$ 47,844	$ 67,327

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Current assets:
Cash and cash equivalents	$ 526,281	$ 521,743
Receivables, less allowances of $3,244 and $3,398, respectively	278,049	228,410
Inventories, net	340,541	343,638
Other current assets	36,500	26,608
Total current assets	1,181,371	1,120,399
Property and equipment, at cost	423,842	396,321
Accumulated depreciation	(187,992)	(170,334)
Property and equipment, net	235,850	225,987
Operating lease right-of-use assets	45,647	37,227
Goodwill	55,372	55,372
Intangible assets, net	27,834	30,792
Deferred income tax asset, net	51,306	53,256
Other non-current assets	13,699	14,568
Total assets	1,611,079	1,537,601
Current liabilities:
Accounts payable	186,319	157,931
Accrued compensation	18,400	14,273
Finance lease liabilities - current	12,547	11,178
Operating lease liabilities - current	8,276	6,284
Real estate deferred gains - current	3,935	3,935
Other current liabilities	28,247	24,961
Total current liabilities	257,724	218,562
Non-current liabilities:
Long-term debt	294,733	293,743
Finance lease liabilities, less current portion	281,263	274,248
Operating lease liabilities, less current portion	38,752	32,519
Real estate deferred gains, less current portion	64,280	66,599
Other non-current liabilities	18,738	17,644
Total liabilities	955,490	903,315
Commitments and Contingencies
STOCKHOLDERS’ EQUITY:
Preferred Stock, $0.01 par value, 30,000,000 shares authorized, none outstanding	0	0
Common Stock, $0.01 par value, 20,000,000 shares authorized, 8,423,383 and 8,650,046 outstanding, respectively	84	87
Additional paid-in capital	138,522	165,060
Retained earnings	516,983	469,139
Total stockholders’ equity	655,589	634,286
Total liabilities and stockholders’ equity	$ 1,611,079	$ 1,537,601

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 3,244	$ 3,398
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	30,000,000	30,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares outstanding (in shares)	8,423,383	8,650,046

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands		Total		Common Stock		Additional Paid-In Capital		Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2022				9,049,000
Beginning balance at Dec. 31, 2022		$ 590,029		$ 90		$ 200,748		$ (31,412)	$ 420,603
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		17,812							17,812
Other comprehensive income		228						228
Vesting of restricted stock units (in shares)				67,000
Vesting of restricted stock units		0		$ 1		(1)
Compensation related to share-based grants		4,569				4,569
Repurchase of shares to satisfy employee tax withholdings (in shares)				(8,000)
Repurchase of shares to satisfy employee tax withholdings		(570)				(570)
Obligation for repurchase of shares to satisfy employee tax withholdings (in shares)				(19,000)
Obligation for repurchase of shares to satisfy employee tax withholdings		(1,319)				(1,319)
Ending balance (in shares) at Apr. 01, 2023				9,089,000
Ending balance at Apr. 01, 2023		610,749		$ 91		203,427		(31,184)	438,415
Beginning balance (in shares) at Dec. 31, 2022				9,049,000
Beginning balance at Dec. 31, 2022		590,029		$ 90		200,748		(31,412)	420,603
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		66,660
Other comprehensive income		$ 667
Repurchase of shares to satisfy employee tax withholdings (in shares)		(358,212)
Obligation for shares repurchases not yet settled		$ (843)
Ending balance (in shares) at Sep. 30, 2023				8,796,000
Ending balance at Sep. 30, 2023		631,512		$ 88		174,906		(30,745)	487,263
Beginning balance (in shares) at Apr. 01, 2023				9,089,000
Beginning balance at Apr. 01, 2023		610,749		$ 91		203,427		(31,184)	438,415
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		24,466							24,466
Other comprehensive income		214						214
Vesting of restricted stock units (in shares)				95,000
Vesting of restricted stock units		(1)				(1)
Compensation related to share-based grants		1,926				1,926
Repurchase of shares to satisfy employee tax withholdings (in shares)				(24,000)
Repurchase of shares to satisfy employee tax withholdings		(2,071)				(2,071)
Obligation for repurchase of shares to satisfy employee tax withholdings (in shares)				(10,000)
Obligation for repurchase of shares to satisfy employee tax withholdings		(913)				(913)
Common stock repurchase and retirement (in shares)				(142,000)
Common stock repurchase and retirement		(11,599)		$ (1)		(11,598)
Ending balance (in shares) at Jul. 01, 2023				9,008,000
Ending balance at Jul. 01, 2023		622,771		$ 90		190,770		(30,970)	462,881
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		24,382							24,382
Other comprehensive income		225						225
Vesting of restricted stock units (in shares)				7,000
Vesting of restricted stock units		0
Compensation related to share-based grants		$ 2,980				2,980
Repurchase of shares to satisfy employee tax withholdings (in shares)		(216,507)		(3,000)
Repurchase of shares to satisfy employee tax withholdings		$ (281)				(281)
Obligation for shares repurchases not yet settled (in shares)				(10,000)
Obligation for shares repurchases not yet settled		(843)				(843)
Common stock repurchase and retirement (in shares)				(206,000)
Common stock repurchase and retirement		(17,722)		$ (2)		(17,720)
Ending balance (in shares) at Sep. 30, 2023				8,796,000
Ending balance at Sep. 30, 2023		$ 631,512		$ 88		174,906		$ (30,745)	487,263
Beginning balance (in shares) at Dec. 30, 2023		8,650,046		8,650,000
Beginning balance at Dec. 30, 2023		$ 634,286		$ 87		165,060			469,139
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		17,492							17,492
Vesting of restricted stock units (in shares)	[1]			19,000
Vesting of restricted stock units		0	[1]	$ 1		1
Compensation related to share-based grants		2,350				2,350
Repurchase of shares to satisfy employee tax withholdings (in shares)				(7,000)
Repurchase of shares to satisfy employee tax withholdings		(907)				(907)
Ending balance (in shares) at Mar. 30, 2024				8,662,000
Ending balance at Mar. 30, 2024		$ 653,221		$ 87		166,503			486,631
Beginning balance (in shares) at Dec. 30, 2023		8,650,046		8,650,000
Beginning balance at Dec. 30, 2023		$ 634,286		$ 87		165,060			469,139
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		47,844
Other comprehensive income		$ 0
Repurchase of shares to satisfy employee tax withholdings (in shares)		(297,951)
Obligation for shares repurchases not yet settled		$ 0
Ending balance (in shares) at Sep. 28, 2024		8,423,383		8,423,000
Ending balance at Sep. 28, 2024		$ 655,589		$ 84		138,522			516,983
Beginning balance (in shares) at Mar. 30, 2024				8,662,000
Beginning balance at Mar. 30, 2024		653,221		$ 87		166,503			486,631
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		14,336							14,336
Vesting of restricted stock units (in shares)				57,000
Vesting of restricted stock units		0		$ 1		(1)
Compensation related to share-based grants		1,405				1,405
Repurchase of shares to satisfy employee tax withholdings (in shares)	[1]			(16,000)
Repurchase of shares to satisfy employee tax withholdings		(1,545)	[1]	$ (1)		(1,545)	[1]
Common stock repurchase and retirement (in shares)				(152,000)
Common stock repurchase and retirement		(15,085)		$ (2)		(15,083)
Ending balance (in shares) at Jun. 29, 2024				8,551,000
Ending balance at Jun. 29, 2024		652,332		$ 86		151,279			500,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		16,016							16,016
Other comprehensive income		0
Vesting of restricted stock units (in shares)	[1]			26,000
Vesting of restricted stock units		0	[1]	$ 1		1
Compensation related to share-based grants		$ 3,186				3,186
Repurchase of shares to satisfy employee tax withholdings (in shares)		(145,548)		(8,000)	[1]
Repurchase of shares to satisfy employee tax withholdings		$ (816)	[1]	$ (1)		(816)	[1]
Common stock repurchase and retirement (in shares)				(146,000)
Common stock repurchase and retirement		$ (15,129)		$ (2)		(15,127)
Ending balance (in shares) at Sep. 28, 2024		8,423,383		8,423,000
Ending balance at Sep. 28, 2024		$ 655,589		$ 84		$ 138,522			$ 516,983
[1]Activity rounds to less than one thousand dollars

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Sep. 28, 2024		Jun. 29, 2024		Mar. 30, 2024		Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023
Vesting of restricted stock units	$ 0	[1]	$ 0		$ 0	[1]	$ 0	$ (1)	$ 0
Repurchase of shares to satisfy employee tax withholdings	816	[1]	1,545	[1]	907		281	2,071	570
Common Stock
Vesting of restricted stock units	1		1		1				1
Repurchase of shares to satisfy employee tax withholdings	1		1
Additional Paid-In Capital
Vesting of restricted stock units	1		(1)		1			(1)	(1)
Repurchase of shares to satisfy employee tax withholdings	$ 816	[1]	$ 1,545	[1]	$ 907		$ 281	$ 2,071	$ 570
[1]Activity rounds to less than one thousand dollars

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income	$ 16,016	$ 24,382	$ 47,844	$ 66,660
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization	9,530	8,089	29,083	23,758
Amortization of debt discount and issuance costs	300	300	990	989
Settlement of frozen defined benefit pension plan	(2,226)	0	(2,226)	0
Provision for deferred income taxes			1,950	1,117
Amortization of deferred gains from real estate			(2,952)	(2,952)
Share-based compensation			6,941	9,475
Changes in operating assets and liabilities:
Accounts receivable			(47,413)	(46,013)
Inventories			3,097	120,151
Accounts payable			27,932	49,791
Other current assets			(9,892)	2,621
Other assets and liabilities			11,080	5,127
Net cash provided by operating activities			66,434	230,724
Cash flows from investing activities:
Proceeds from sale of assets			839	191
Property and equipment investments			(19,830)	(18,938)
Net cash used in investing activities			(18,991)	(18,747)
Cash flows from financing activities:
Common stock repurchase and retirement			(29,982)	(29,321)
Repurchase of shares to satisfy employee tax withholdings			(3,257)	(5,157)
Principal payments on finance lease liabilities	(3,255)	(2,393)	(9,666)	(6,659)
Net cash used in financing activities			(42,905)	(41,137)
Net change in cash and cash equivalents			4,538	170,840
Cash and cash equivalents at beginning of period			521,743	298,943
Cash and cash equivalents at end of period	526,281	469,783	526,281	469,783
Supplemental cash flow information:
Interest paid during the period			29,147	27,948
Taxes paid during the period			24,224	17,682
Non-cash investing and financing activities:
Property and equipment acquired under finance leases	$ 5,560	7,877	16,710	11,277
Liabilities for properties and equipment investments			1,013	0
Obligation for shares repurchases not yet settled		$ 843	$ 0	$ 843

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 28, 2024
Accounting Policies [Abstract]
Basis of Presentation	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 30, 2023 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 30, 2023 (the “2023 Form 10-K”), as filed with the Securities and Exchange Commission (“SEC”) on February 20, 2024. 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 2023 Form 10-K. The results for the three and nine months ended September 28, 2024 are not necessarily indicative of results that may be expected for the full fiscal year ending December 28, 2024, or any other interim period. 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 2024 contains 52 weeks and will end on December 28, 2024. Fiscal 2023 contained 52 weeks and ended on December 30, 2023. 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. Significant Accounting Policies The Company has made no material changes to its significant accounting policies described in the notes to its consolidated financial statement included in its 2023 Form 10-K. The Company did not adopt any new accounting standards during the fiscal year ended December 30, 2023 or during the nine months ended September 28, 2024. Recent Accounting Pronouncements - Not Yet Adopted Segment Reporting Improvements . On November 27, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07, Segment Reporting—Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The FASB issued the new guidance primarily to provide financial statement users with more disaggregated expense information about a public business entity’s (“PBE”) reportable segment(s). This ASU will require PBEs to provide incremental disclosures related to the entity’s reportable segment(s), including disclosures for expenses that are both 1) significant to each reportable segment and are provided regularly to the Chief Operating Decision Maker (“CODM”) or easily computed from information regularly provided to the CODM and 2) included in the reported measure of segment profit or loss used by the CODM to assess performance and allocate resources. If a PBE does not disclose any significant segment expenses for a reportable segment, it is required to disclose narratively the nature of the expenses used by the CODM to manage each segment’s operations. Under the provisions of this ASU, all of the disclosures required in the segment guidance, including disclosing a measure of segment profit or loss used by the CODM and reporting significant segment expenses, applies to all PBEs, including those with a single operating or reportable segment. However, this ASU does not change the definition of a segment, the method for determining segments, or the criteria for aggregating operating segments into reportable segments. ASU 2023-07 will be effective for the Company’s annual reporting period for fiscal 2024 and all interim reporting periods beginning in fiscal 2025. At adoption, the disclosures are retrospectively presented for all comparative periods presented. 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 2023-07. Income Tax Disclosure Improvement . On December 14, 2023, the FASB issued 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 tax rate and the statutory 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.

Inventories

Inventories	9 Months Ended
	Sep. 28, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories The Company’s inventories consist almost entirely of finished goods inventory, with a very limited amount of work-in-process inventory. The cost of all inventories is determined by the moving average cost method. The Company included all material charges directly incurred in bringing inventory to its existing condition and location, including the cost of inbound freight, volume incentives, inventory adjustments, tariffs, duties and other import fees. The Company evaluates its inventory value at the end of each quarter to ensure that inventory, when viewed by category, is carried at the lower-of-cost-and-net-realizable-value (“LCNRV”), which also considers items that may be considered damaged, excess, and obsolete inventory. During the second quarter of fiscal 2024, the Company recorded a write-down of $2.4 million to reflect the LCNRV for certain inventory related to its structural products. The $2.4 million write-down was due to declines in wood-based commodity prices. During the third quarter of fiscal 2024, substantially all of the inventory covered by this $2.4 million LCNRV write-down was sold, thereby resulting in lower Costs of products sold by that same amount in the third quarter of fiscal 2024. This adjustment increased gross margin percentage for structural products in the third quarter of fiscal 2024 by 1.0 percent. Substantially all of the amount reported in Cost of products sold on the Company’s consolidated statement of operations is composed of costs incurred to purchase inventory that is subsequently resold to customers, including costs related to import duties and tariffs. Import duties and tariffs are not typically passed through to customers as separately billed charges. Certain import duties are classified by the U.S. Department of Commerce (the “Commerce Department”) as “antidumping or countervailing duties,” and these duties may be subject to periodic review and adjustments by the Commerce Department through a process known as a trade remedy administrative review, which can result in both retroactive and prospective adjustments to duty rates. At the time of importation, the Company tenders antidumping duty and countervailing duty cash deposits (as use of that term has been defined by the Commerce Department) to the U.S. Customs and Border Protection (“U.S. Customs”) and accounts for duties and tariffs based on the then-current rates in effect, and records any retroactive adjustments in the period in which U.S. Customs determines final duty rates at the time entries subject to antidumping and countervailing duties liquidate (as use of that term has been defined by the Commerce Department), typically through the resolution of a trade remedy administrative review proceeding. During the three and nine months ended September 28, 2024, the Company recognized refunds of $3.8 million and $20.7 million, respectively, plus interest of $0.7 million and $2.7 million, respectively, related to retroactive adjustments associated with certain antidumping duties for imported wood moulding and millwork products. The antidumping duty cash deposits were originally paid and accounted for by the Company in prior reporting periods at the then-current rates. Impacted inventories have since been sold. These adjustment amounts are reflected in Cost of products sold and Interest expense, net, respectively, on the Company’s unaudited condensed consolidated statements of operations for the three and nine months ended September 28, 2024. See Note 9, Commitments and Contingencies , for disclosure concerning another matter related to import duties.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, net	9 Months Ended
	Sep. 28, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, net	Goodwill and Intangible Assets, net During the fiscal quarter and year-to-date period ended September 28, 2024, the only change to the carrying values of Goodwill and Intangible assets, net, was the amortization of Intangible assets, all of which have definite lives. Amortization expense for intangible assets was $1.0 million and $3.0 million for the three and nine month periods ended September 28, 2024, respectively. For the three and nine month periods ended September 30, 2023, amortization expense was $1.0 million and $3.2 million, respectively.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 28, 2024
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition The following table presents the Company’s revenues disaggregated by revenue source. Sales and usage-based taxes are excluded from revenues. Three Months Ended Nine Months Ended Product type September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Specialty products $ 519,000 $ 558,851 $ 1,562,300 $ 1,697,679 Structural products 228,288 251,130 679,595 726,173 Total net sales $ 747,288 $ 809,981 $ 2,241,895 $ 2,423,852 The following table presents the Company’s revenues disaggregated by sales channel. Sales and usage-based taxes are excluded from revenues. Three Months Ended Nine Months Ended Sales channel September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Warehouse and reload $ 622,981 $ 683,072 $ 1,843,942 $ 2,065,212 Direct 140,505 143,026 445,606 405,335 Customer discounts and rebates (16,198) (16,117) (47,653) (46,695) Total net sales $ 747,288 $ 809,981 $ 2,241,895 $ 2,423,852 Warehouse sales are delivered from Company warehouses. Reload sales are similar to warehouse sales but are shipped from warehouses, most of which are operated by third parties, where the Company stores owned products to enhance operating efficiencies. The reload channel is employed primarily to service strategic customers that would be less economical to service from Company warehouses, and to distribute large volumes of imported products from port facilities. Direct sales are shipped from the manufacturer to the customer without the Company taking physical possession of the inventory and, as a result, typically generate lower margins than warehouse and reload distribution channels but require lower amount of committed capital and fixed costs. Performance obligations in contracts with customers generally consist solely of delivery of goods.

Debt and Finance Lease Obligati

Debt and Finance Lease Obligations	9 Months Ended
	Sep. 28, 2024
Debt Disclosure [Abstract]
Debt and Finance Lease Obligations	Debt and Finance Lease Obligations As of September 28, 2024 and December 30, 2023, debt and finance lease obligations consisted of the following: September 28, 2024 December 30, 2023 (In thousands) Senior Secured Notes (“2029 Notes”) (1) $ 300,000 $ 300,000 Revolving Credit Facility (2) — — Finance lease obligations (3) 293,810 285,426 593,810 585,426 Unamortized debt issuance costs (2,629) (3,246) Unamortized bond discount costs (2,638) (3,011) 588,543 579,169 Less: current portion of finance lease obligations 12,547 11,178 Total, net of current portion $ 575,996 $ 567,991 (1) As of September 28, 2024 and December 30, 2023, long-term debt was comprised of $300 million of Senior Secured Notes (“2029 Notes”) issued in October 2021. These notes are presented under the Long-term debt caption of the Company’s unaudited condensed consolidated balance sheets at $294.7 million and $293.7 million as of September 28, 2024 and December 30, 2023, respectively. This balance sheet presentation is net of unamortized discount of $2.6 million and $3.0 million, respectively, and unamortized debt issuance costs of $2.6 million and $3.2 million, respectively, as of September 28, 2024 and December 30, 2023. The Senior Secured Notes are presented in this table at their face value. (2) Available borrowing capacity under the Revolving Credit Facility was $346.5 million as of September 28, 2024 and December 30, 2023. The available borrowing capacity reflects undrawn letters of credit. (3) Refer to Note 8, Leases , for interest rates associated with finance lease obligations. Amounts on this line include $125.1 million and $125.0 million as of September 28, 2024 and December 30, 2023, respectively, for sale-leasebacks of real estate in fiscal 2019 and 2020 that did not qualify for sale treatment for accounting purposes. Interest expense, net on the Company’s unaudited condensed consolidated statements of operations consisted of the following components: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Interest expense $ 11,668 $ 11,394 $ 35,958 33,977 Interest income 7,049 5,817 21,914 14,402 Interest expense, net $ 4,619 $ 5,577 $ 14,044 $ 19,575 Interest expense for the reporting periods presented in the above table primarily reflects interest expense for the 2029 Notes, interest expense on finance lease obligations, certain ongoing fees for the Revolving Credit Facility that are classified as interest expense, amortization of debt issuance costs for the 2029 Notes and Revolving Credit Facility, and amortization of original-issue bond discount on the 2029 Notes. Total amortization of debt issuance costs and bond discount costs was $0.3 million and $1.0 million for the three and nine months ended September 28, 2024, respectively, and $0.3 million and $1.0 million for the three and nine months ended September 30, 2023, respectively. Interest expense for the nine months ended September 28, 2024 also includes $1.2 million for estimated interest expense related to import duties that the Company believes it may owe (see Note 9, Commitments and Contingencies) . Interest income for the reporting periods presented in the above table primarily reflects interest earned on the Company’s cash and cash equivalents. Interest income for the three and nine months ended September 28, 2024 also includes $0.7 million and $2.7 million, respectively, on refunds approved in fiscal 2024 from U.S. Customs for anti-dumping import duties (see Note 2, Inventories) . 2029 Notes Interest expense, excluding amortization of debt issuance costs and bond discount, for the 2029 Notes totaled $4.5 million and $13.5 million for the three and nine months ended September 28, 2024, respectively, and $4.5 million and $13.5 million for the three and nine months ended September 30, 2023, respectively. The 2029 Notes pay interest at a fixed annual rate of 6.0 percent through maturity. Revolving Credit Facility As of September 28, 2024 and December 30, 2023, the Company had zero outstanding borrowings under the Revolving Credit Facility. Available borrowing capacity, reduced for undrawn letters of credit, under the Revolving Credit Facility was $346.5 million as of September 28, 2024 and December 30, 2023. Excess availability, which includes availability under the Revolving Credit Facility plus cash and cash equivalents in qualified deposit accounts, was $872.8 million and $868.2 million as of September 28, 2024 and December 30, 2023, respectively. Debt Covenants The Revolving Credit Facility and the 2029 Notes contain various covenants and restrictions, including customary financial covenants. The Company was in compliance with all such covenants as of September 28, 2024 and December 30, 2023. The Company’s right to make draws on the Revolving Credit Facility may be conditioned upon, among other things, compliance with these covenants. These covenants also limit the Company’s ability to, among other things: incur additional debt; grant liens on assets; make investments; repurchase stock; pay dividends and make distributions; sell or acquire assets, including certain real estate assets, outside the ordinary course of business; engage in transactions with affiliates; and make fundamental business changes. Finance Lease Obligations The Company’s finance lease liabilities consist of leases related to equipment, vehicles, and real estate, with the majority of those finance leases related to real estate. For more information on the Company’s finance lease obligations, refer to Note 8, Leases

Net Periodic Pension Cost (Bene

Net Periodic Pension Cost (Benefit)	9 Months Ended
	Sep. 28, 2024
Retirement Benefits [Abstract]
Net Periodic Pension Cost (Benefit)	Net Periodic Pension Cost (Benefit) As previously disclosed, effective December 5, 2023, the Company settled its noncontributory defined benefit pension plan (the “DB Plan”) by purchasing an irrevocable nonparticipating annuity contract with an insurance company (the “buy-out contract”). The buyout contract met the requirements for a settlement, as that term is defined in ASC No. 715, Compensation-Retirement Benefits , and the DB Plan and Company, as sponsor, were relieved of primary responsibility for the benefits obligations. The Company incurred the following net periodic pension (benefit) cost for the following periods: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Service cost (1) $ — $ — $ — $ — Interest cost on projected benefit obligation — 1,105 — 3,314 Expected return on plan assets — (812) — (2,437) Amortization of unrecognized gain — 301 — 905 Settlement loss adjustment (2) (2,226) — (2,226) — Net periodic pension (benefit) cost $ (2,226) $ 594 $ (2,226) $ 1,782 (1) Service cost not a part of net periodic pension benefit as the pension plan was frozen for all participants. (2) Represents an adjustment for the settlement charge originally recognized during the fourth quarter of fiscal 2023 related to settlement of the Company’s frozen defined benefit pension plan. Net periodic pension cost is included in Other expense, net in the Company’s unaudited condensed consolidated statement of operations and comprehensive income. However, the settlement charge and related adjustments are reported on a separate line under Non-operating expenses on the Company’s unaudited condensed consolidated statement of operations and comprehensive income.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 28, 2024
Share-Based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation During the three and nine months ended September 28, 2024, the Company incurred stock compensation expense of $3.2 million and $6.9 million, respectively. Expense in the nine months ended September 28, 2024 included a credit of $1.7 million (recognized in fiscal second quarter 2024) related to cumulative adjustments for certain unvested restricted stock unit grants that were granted in June 2022 and are subject to vesting based, in part, on performance criteria that are not expected, as of September 28, 2024, to be fully achieved before the end of the vesting period on June 28, 2025. As of September 28, 2024, unearned compensation for share-based grants was $23.0 million, with $14.2 million of this amount associated with grants made in the first nine months of fiscal 2024. Under the Company’s 2021 BlueLinx Holdings, Inc. 2021 Long-Term Incentive Plan as of September 28, 2024, 506,044 shares of common stock remain available for future issuance pursuant to equity-based compensation awards.

Leases

Leases	9 Months Ended
	Sep. 28, 2024
Leases [Abstract]
Leases	Leases The Company has operating and finance leases for certain of its distribution facilities, office space, land, mobile fleet, and equipment. Many of these leases are non-cancelable and typically have a defined initial lease term, and some provide options to renew at the Company’s election for specified periods of time. The majority of these leases have remaining lease terms of one The Company determines if an arrangement is a lease at inception and assesses lease classification as either operating or finance at lease inception or modification. Operating lease right-of use (“ROU”) assets and liabilities are presented separately on the Company’s consolidated balance sheets. Finance lease ROU assets are included in property and equipment and the finance lease obligations are presented separately in the Company’s consolidated balance sheets. When a lease does not provide an implicit interest rate, the Company uses its incremental borrowing rate based on the information available at the commencement date to determine the present value of future payments. The Company has also made the accounting policy election to not separate lease components from non-lease components related to the mobile fleet asset class. The Company’s finance lease liabilities consist of leases related to equipment and vehicles, and real estate. A majority of the Company’s finance leases relate to real estate. During fiscal 2017 and fiscal 2018, the Company entered into real estate financing transactions on certain of its warehouse facilities. These transactions were completed pursuant to sale-leaseback arrangements, and upon their completion, the Company entered into long-term leases on the properties having renewal options. The Company accounted for these transactions in accordance with the ASC 840, Leases , which was the lease accounting standard in effect for the Company at the inception of these arrangements. The Company recorded these transactions as finance lease liabilities on its consolidated balance sheet. Gains on these sale-leaseback transactions were deferred and are being recognized into the Company’s earnings. As of September 28, 2024 and December 30, 2023, the remaining unrecognized deferred gains related to these transactions were $68.2 million and $70.5 million, respectively, and these deferred gains are being recognized in earning on a straight-line basis. During the three months ended September 28, 2024 and September 30, 2023, the Company recognized $1.0 million and $1.0 million, respectively, of these deferred gains in each quarter. In the nine months ended September 28, 2024 and September 30, 2023, the Company recognized $3.0 million and $3.0 million, respectively, of these deferred gains in each period. The following table presents the assets and liabilities related to the Company’s leases as of September 28, 2024 and December 30, 2023: Lease Assets and Liabilities September 28, 2024 December 30, 2023 (In thousands) Assets Classification Operating lease right-of-use assets Operating lease right-of-use assets $ 45,647 $ 37,227 Finance lease right-of-use assets (1) Property and equipment, net 136,958 138,357 Total lease right-of-use assets $ 182,605 $ 175,584 Liabilities Current portion: Operating lease liabilities Operating lease liabilities - current $ 8,276 $ 6,284 Finance lease liabilities Finance lease liabilities - current 12,547 11,178 Non-current portion: Operating lease liabilities Operating lease liabilities - noncurrent 38,752 32,519 Finance lease liabilities Finance lease liabilities - noncurrent 281,263 274,248 Total lease liabilities $ 340,838 $ 324,229 (1 ) Finance lease right-of-use assets are presented net of accumulated amortization of $111.4 million and $102.9 million as of September 28, 2024 and December 30, 2023, respectively. The compon ents of lease expense were as follows: Three Months Ended Nine Months Ended Components of lease expense September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Operating lease expense: Operating lease expense before sublease income $ 2,886 $ 2,755 $ 7,965 $ 8,789 Sublease income (900) (1,062) (2,648) (2,475) Operating lease expense $ 1,986 $ 1,693 $ 5,317 $ 6,314 Finance lease expense: Amortization of right-of-use assets $ 4,716 $ 5,408 $ 14,478 $ 12,190 Interest on lease liabilities 6,407 6,077 19,108 18,158 Total finance lease expense $ 11,123 $ 11,485 $ 33,586 $ 30,348 Supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Cash flow information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows, operating leases $ 2,930 $ 2,367 $ 8,132 $ 8,958 Operating cash flows, finance leases $ 6,407 $ 6,077 $ 19,108 $ 18,158 Financing cash flows, finance leases $ 3,255 $ 2,393 $ 9,666 $ 6,659 Non-cash supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Non-cash information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Right-of-use assets obtained in exchange for lease obligations Operating leases $ 3,183 $ — $ 14,515 $ — Finance leases $ 5,560 $ 7,877 $ 16,710 $ 11,277 Supplemental balance sheet information related to leases is as follows: Balance Sheet Information September 28, 2024 December 30, 2023 ($ in thousands) Finance leases Property and equipment $ 248,322 $ 241,276 Accumulated depreciation (111,364) (102,919) Property and equipment, net $ 136,958 $ 138,357 Weighted Average Remaining Lease Term (in years) Operating leases 8.44 8.88 Finance leases 17.87 19.94 Weighted Average Discount Rate Operating leases 8.18 % 8.74 % Finance leases 8.80 % 8.84 % The major categories of the Company’s obligations under finance leases as of September 28, 2024 and December 30, 2023 are as follows: Category September 28, 2024 December 30, 2023 (In thousands) Equipment and vehicles $ 50,752 $ 42,252 Real estate (1) 243,058 243,174 Total finance leases $ 293,810 $ 285,426 (1) Amounts include $125.1 million and $125.0 million as of September 28, 2024 and December 30, 2023, respectively, for sale-leasebacks of real estate in fiscal 2019 and 2020 that did not qualify for sale treatment for accounting purposes. Below is a summary of undiscounted finance and operating lease liabilities that have initial terms in excess of one year as of September 28, 2024. The table also includes a reconciliation of the future undiscounted cash flows to the present value of the finance and operating lease liabilities included in the unaudited condensed consolidated balance sheet, including options to extend lease terms that are reasonably certain of being exercised. Fiscal Year: Operating Leases Finance Leases (In thousands) 2024 $ 2,932 $ 9,999 2025 11,074 37,057 2026 8,089 40,487 2027 7,138 34,900 2028 6,885 35,093 Thereafter 30,713 504,048 Total lease payments $ 66,831 $ 661,584 Less: imputed interest (19,803) (367,774) Total $ 47,028 $ 293,810
Leases	Leases The Company has operating and finance leases for certain of its distribution facilities, office space, land, mobile fleet, and equipment. Many of these leases are non-cancelable and typically have a defined initial lease term, and some provide options to renew at the Company’s election for specified periods of time. The majority of these leases have remaining lease terms of one The Company determines if an arrangement is a lease at inception and assesses lease classification as either operating or finance at lease inception or modification. Operating lease right-of use (“ROU”) assets and liabilities are presented separately on the Company’s consolidated balance sheets. Finance lease ROU assets are included in property and equipment and the finance lease obligations are presented separately in the Company’s consolidated balance sheets. When a lease does not provide an implicit interest rate, the Company uses its incremental borrowing rate based on the information available at the commencement date to determine the present value of future payments. The Company has also made the accounting policy election to not separate lease components from non-lease components related to the mobile fleet asset class. The Company’s finance lease liabilities consist of leases related to equipment and vehicles, and real estate. A majority of the Company’s finance leases relate to real estate. During fiscal 2017 and fiscal 2018, the Company entered into real estate financing transactions on certain of its warehouse facilities. These transactions were completed pursuant to sale-leaseback arrangements, and upon their completion, the Company entered into long-term leases on the properties having renewal options. The Company accounted for these transactions in accordance with the ASC 840, Leases , which was the lease accounting standard in effect for the Company at the inception of these arrangements. The Company recorded these transactions as finance lease liabilities on its consolidated balance sheet. Gains on these sale-leaseback transactions were deferred and are being recognized into the Company’s earnings. As of September 28, 2024 and December 30, 2023, the remaining unrecognized deferred gains related to these transactions were $68.2 million and $70.5 million, respectively, and these deferred gains are being recognized in earning on a straight-line basis. During the three months ended September 28, 2024 and September 30, 2023, the Company recognized $1.0 million and $1.0 million, respectively, of these deferred gains in each quarter. In the nine months ended September 28, 2024 and September 30, 2023, the Company recognized $3.0 million and $3.0 million, respectively, of these deferred gains in each period. The following table presents the assets and liabilities related to the Company’s leases as of September 28, 2024 and December 30, 2023: Lease Assets and Liabilities September 28, 2024 December 30, 2023 (In thousands) Assets Classification Operating lease right-of-use assets Operating lease right-of-use assets $ 45,647 $ 37,227 Finance lease right-of-use assets (1) Property and equipment, net 136,958 138,357 Total lease right-of-use assets $ 182,605 $ 175,584 Liabilities Current portion: Operating lease liabilities Operating lease liabilities - current $ 8,276 $ 6,284 Finance lease liabilities Finance lease liabilities - current 12,547 11,178 Non-current portion: Operating lease liabilities Operating lease liabilities - noncurrent 38,752 32,519 Finance lease liabilities Finance lease liabilities - noncurrent 281,263 274,248 Total lease liabilities $ 340,838 $ 324,229 (1 ) Finance lease right-of-use assets are presented net of accumulated amortization of $111.4 million and $102.9 million as of September 28, 2024 and December 30, 2023, respectively. The compon ents of lease expense were as follows: Three Months Ended Nine Months Ended Components of lease expense September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Operating lease expense: Operating lease expense before sublease income $ 2,886 $ 2,755 $ 7,965 $ 8,789 Sublease income (900) (1,062) (2,648) (2,475) Operating lease expense $ 1,986 $ 1,693 $ 5,317 $ 6,314 Finance lease expense: Amortization of right-of-use assets $ 4,716 $ 5,408 $ 14,478 $ 12,190 Interest on lease liabilities 6,407 6,077 19,108 18,158 Total finance lease expense $ 11,123 $ 11,485 $ 33,586 $ 30,348 Supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Cash flow information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows, operating leases $ 2,930 $ 2,367 $ 8,132 $ 8,958 Operating cash flows, finance leases $ 6,407 $ 6,077 $ 19,108 $ 18,158 Financing cash flows, finance leases $ 3,255 $ 2,393 $ 9,666 $ 6,659 Non-cash supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Non-cash information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Right-of-use assets obtained in exchange for lease obligations Operating leases $ 3,183 $ — $ 14,515 $ — Finance leases $ 5,560 $ 7,877 $ 16,710 $ 11,277 Supplemental balance sheet information related to leases is as follows: Balance Sheet Information September 28, 2024 December 30, 2023 ($ in thousands) Finance leases Property and equipment $ 248,322 $ 241,276 Accumulated depreciation (111,364) (102,919) Property and equipment, net $ 136,958 $ 138,357 Weighted Average Remaining Lease Term (in years) Operating leases 8.44 8.88 Finance leases 17.87 19.94 Weighted Average Discount Rate Operating leases 8.18 % 8.74 % Finance leases 8.80 % 8.84 % The major categories of the Company’s obligations under finance leases as of September 28, 2024 and December 30, 2023 are as follows: Category September 28, 2024 December 30, 2023 (In thousands) Equipment and vehicles $ 50,752 $ 42,252 Real estate (1) 243,058 243,174 Total finance leases $ 293,810 $ 285,426 (1) Amounts include $125.1 million and $125.0 million as of September 28, 2024 and December 30, 2023, respectively, for sale-leasebacks of real estate in fiscal 2019 and 2020 that did not qualify for sale treatment for accounting purposes. Below is a summary of undiscounted finance and operating lease liabilities that have initial terms in excess of one year as of September 28, 2024. The table also includes a reconciliation of the future undiscounted cash flows to the present value of the finance and operating lease liabilities included in the unaudited condensed consolidated balance sheet, including options to extend lease terms that are reasonably certain of being exercised. Fiscal Year: Operating Leases Finance Leases (In thousands) 2024 $ 2,932 $ 9,999 2025 11,074 37,057 2026 8,089 40,487 2027 7,138 34,900 2028 6,885 35,093 Thereafter 30,713 504,048 Total lease payments $ 66,831 $ 661,584 Less: imputed interest (19,803) (367,774) Total $ 47,028 $ 293,810

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 28, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Regulatory Matters Government and regulatory agencies may have the ability to conduct routine audits and periodic examinations of, and administrative proceedings regarding, the Company’s business operations. As previously disclosed, U.S. Customs gathered initial information from the Company under routine audit procedures, and the information indicated that the Company potentially underpaid duties in prior periods arising from certain classification discrepancies for products imported into the United States as separately entered shipments. In working with U.S. Customs, the Company has exercised reasonable care to address this matter in an equitable and expeditious manner through the filing of a prior disclosure submission with U.S. Customs. As of September 28, 2024, the Company estimates that it will be required to pay approximately $8.0 million, excluding any interest. This amount is reflected in Other current liabilities on the Company’s unaudited condensed consolidated balance sheet as of September 28, 2024. On the Company’s unaudited condensed consolidated statements of operations, expense of $0.3 million and $8.0 million, excluding interest, was recognized for this matter in the three and nine months ended September 28, 2024, respectively, within Cost of products sold. See Note 2, Inventories , for disclosure concerning another matter related to import duties. Environmental Matters From time to time, the Company is involved in various proceedings incidental to its business and the Company is subject to a variety of environmental and pollution control laws and regulations in all jurisdictions in which it operates. Although the ultimate outcome of these proceedings cannot be determined with certainty, based on presently available information, the Company believes that adequate liabilities have been accrued for probable losses with respect thereto and receivables recorded for expected receipts from settlements. The Company further believes that, while the ultimate outcome of these matters could be material to the Company’s financial position, results of operations and cash flows in any given reporting period, they will not have a materially adverse effect on the Company’s long-term financial condition, results of operations, or cash flows. Collective Bargaining Agreements As of September 28, 2024, approximately 18.4 percent of the Company’s employees were represented by various local labor unions with terms and conditions of employment governed by collective bargaining agreements (“CBAs”). Two CBAs covering approximately 1.3 percent percent of the Company’s employees are up for renewal during the remainder of fiscal 2024 and are expected to be renegotiated before their renewal dates.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 28, 2024
Equity [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss As of September 28, 2024 and December 30, 2023, the Company had no accumulated other comprehensive income or loss. For changes in accumulated other comprehensive loss during the three and nine months ended September 30, 2023, see the unaudited condensed consolidated statements of operations and comprehensive income included in this Form 10-Q. As of September 30, 2023, the components of accumulated other comprehensive loss were as follows: Defined Other, Total Accumulated Other Comprehensive Loss (In thousands) September 30, 2023 balances $ (31,986) $ 1,241 $ (30,745)

Income Taxes

Income Taxes	9 Months Ended
	Sep. 28, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Effective Income Tax Rate The Company’s effective income tax rates for the three months ended September 28, 2024 and September 30, 2023 were 26.0 percent and 27.2 percent, respectively. The Company’s effective income tax rates for the nine months ended September 28, 2024 and September 30, 2023 were 24.9 percent and 25.9 percent, respectively. The Company’s effective income tax rates for the three and nine months ended September 28, 2024 and September 30, 2023 were impacted by the permanent addback of certain nondeductible expenses, including meals and entertainment and executive compensation, partially offset by a partial release of a valuation allowance for deferred income tax assets, the vesting of restricted stock units, and the return-to-provision adjustment associated with the most recently filed U.S. Federal income tax return. The Company’s effective income tax rates for the three and nine months ended September 30, 2023 were impacted by state taxes as well as the permanent addback of certain nondeductible expenses, including executive compensation, offset by a benefit from the vesting of restricted stock units. For fiscal 2024, the Company expects its consolidated annual effective income tax rate will be approximately 26 percent. For additional information about the Company’s income taxes, see Note 7, Income Taxes , to the consolidated financial statements included in Item 8 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 30, 2023.

Earnings Per Share and Stockhol

Earnings Per Share and Stockholders' Equity	9 Months Ended
	Sep. 28, 2024
Earnings Per Share [Abstract]
Earnings Per Share and Stockholders' Equity	Earnings Per Share and Stockholders' Equity The Company calculates basic earnings per share by dividing net income for the period by the weighted average number of shares of common stock outstanding for the period. For rounding purposes when calculating earnings per share, the Company’s policy is to round down to the whole cent. The Company calculates diluted earnings per share using the treasury stock method whereby net income for the period is divided by the weighted average number of shares of common stock outstanding for the period including the dilutive effect, if any, of shares of stock associated with unvested share-based grants. However, for share-based grants that vest in whole or in part based on performance metrics, their dilutive effect is included only after the performance metrics have been achieved. The reconciliations of basic net income and diluted earnings per common share for the three and nine month periods ended September 28, 2024 and September 30, 2023 are as follows: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 Net income (in thousands) $ 16,016 $ 24,382 $ 47,844 $ 66,660 Weighted-average shares outstanding - Basic 8,496,383 8,935,851 8,622,616 9,009,812 Dilutive effect of share-based awards 31,927 34,343 24,015 17,646 Weighted-average shares outstanding - Diluted 8,528,310 8,970,194 8,646,631 9,027,458 Basic earnings per share $ 1.88 $ 2.72 $ 5.54 $ 7.39 Diluted earnings per share $ 1.87 $ 2.71 $ 5.53 $ 7.38 During the three and nine months ended September 28, 2024, unvested time-based restricted stock units totaling 6,299 and 1,644, respectively, and unvested performance-based restricted stock units totaling 139,654 for both periods were outstanding but not included in the computation of diluted earnings per share for the respective periods. During the three and nine months ended September 30, 2023, unvested time-based restricted stock units totaling 103,152 and 161,572, respectively, and unvested performance-based restricted stock units totaling 112,252 for both periods were outstanding but not included in the computation of diluted earnings per share for the respective periods. Each restricted stock unit is composed of one unvested share of the Company’s common stock. The unvested time-based restricted stock units were excluded because they were antidilutive based on their unearned compensation amounts and on the Company’s average stock price during the periods. The unvested performance-based restricted stock units were excluded because their performance metrics had not been achieved as of the end of the respective reporting period. Repurchases of Common Stock 2023 Authorization On October 31, 2023, the Company’s board of directors authorized a new share repurchase program for $100 million. Under the new share repurchase program, the Company may repurchase its common stock from time to time, without prior notice, subject to prevailing market conditions and other considerations. Repurchases may be made through a variety of methods, which may include open market purchases, privately negotiated transactions, accelerated share repurchase programs, tender offers or pursuant to a trading plan that may be adopted in accordance with the Securities and Exchange Commission Rule 10b5-1. During the three and nine months ended September 28, 2024, the Company repurchased 145,548 shares and 297,951 shares, respectively, of its common stock at a weighted-average average price of $103.08 and $100.63, respectively, including broker commissions but excluding federal excise tax on the repurchases, for a total of $15.0 million and $30.0 million, respectively. These amounts are based on trade date activity, while the amounts reported on the Company’s consolidated statements of cash flows for share repurchases are based on settlement date activity. As of September 28, 2024, there remained $61.5 million repurchase capacity under this authorization. Between September 28, 2024 and October 25, 2024, the Company purchased an additional 43,240 shares of its common stock for $4.6 million at a weighted-average share price of $106.34 per share, including broker commissions but excluding federal excise tax due on the repurchases. 2021/2022 Authorization On August 23, 2021, the Company’s board of directors approved a stock repurchase program that authorized the Company to repurchase up to $25.0 million of its common stock. On May 3, 2022, the Company’s board of directors increased the share repurchase authorization to $100 million. During the three and nine months ended September 30, 2023, the Company repurchased 216,507 shares and 358,212 shares, respectively, of its common stock under the 2021/2022 authorization at a weighted-average price of $84.93, and $83.52, respectively, including broker commissions but excluding federal excise tax on the repurchases, for total cash of $11.5 million and $29.9 million, respectively. These amounts are based on trade date activity, while the amounts reported on the Company’s consolidated statements of cash flows for share repurchases are based on settlement date activity. During fiscal October 2023, the Company exhausted the remaining available capacity of $3.7 million under the 2021/2022 authorization.

Fair Value Disclosures

Fair Value Disclosures	9 Months Ended
	Sep. 28, 2024
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures The Company has no assets or liabilities with carrying values that are remeasured and adjusted to fair value on a recurring basis for each reporting period. The Company has not elected the fair value option for any assets or liabilities. As of September 28, 2024 and December 30, 2023, the fair value of the 2029 Notes was approximately $290 million and $273 million, respectively, which were estimated from inputs that are designated as Level 2 in the fair value hierarchy. The Company’s valuation technique is based primarily on observable market prices in less active markets.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net loss	$ 16,016	$ 14,336	$ 17,492	$ 24,382	$ 24,466	$ 17,812	$ 47,844	$ 66,660

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 28, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 28, 2024
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 30, 2023 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 30, 2023 (the “2023 Form 10-K”), as filed with the Securities and Exchange Commission (“SEC”) on February 20, 2024. 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 2023 Form 10-K. The results for the three and nine months ended September 28, 2024 are not necessarily indicative of results that may be expected for the full fiscal year ending December 28, 2024, or any other interim period. 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 2024 contains 52 weeks and will end on December 28, 2024. Fiscal 2023 contained 52 weeks and ended on December 30, 2023.
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 Segment Reporting Improvements . On November 27, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-07, Segment Reporting—Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The FASB issued the new guidance primarily to provide financial statement users with more disaggregated expense information about a public business entity’s (“PBE”) reportable segment(s). This ASU will require PBEs to provide incremental disclosures related to the entity’s reportable segment(s), including disclosures for expenses that are both 1) significant to each reportable segment and are provided regularly to the Chief Operating Decision Maker (“CODM”) or easily computed from information regularly provided to the CODM and 2) included in the reported measure of segment profit or loss used by the CODM to assess performance and allocate resources. If a PBE does not disclose any significant segment expenses for a reportable segment, it is required to disclose narratively the nature of the expenses used by the CODM to manage each segment’s operations. Under the provisions of this ASU, all of the disclosures required in the segment guidance, including disclosing a measure of segment profit or loss used by the CODM and reporting significant segment expenses, applies to all PBEs, including those with a single operating or reportable segment. However, this ASU does not change the definition of a segment, the method for determining segments, or the criteria for aggregating operating segments into reportable segments. ASU 2023-07 will be effective for the Company’s annual reporting period for fiscal 2024 and all interim reporting periods beginning in fiscal 2025. At adoption, the disclosures are retrospectively presented for all comparative periods presented. 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 2023-07.
Income Per Share	The Company calculates basic earnings per share by dividing net income for the period by the weighted average number of shares of common stock outstanding for the period. For rounding purposes when calculating earnings per share, the Company’s policy is to round down to the whole cent. The Company calculates diluted earnings per share using the treasury stock method whereby net income for the period is divided by the weighted average number of shares of common stock outstanding for the period including the dilutive effect, if any, of shares of stock associated with unvested share-based grants. However, for share-based grants that vest in whole or in part based on performance metrics, their dilutive effect is included only after the performance metrics have been achieved.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 28, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Revenues Disaggregated by Revenue Source and Sales Channel	The following table presents the Company’s revenues disaggregated by revenue source. Sales and usage-based taxes are excluded from revenues. Three Months Ended Nine Months Ended Product type September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Specialty products $ 519,000 $ 558,851 $ 1,562,300 $ 1,697,679 Structural products 228,288 251,130 679,595 726,173 Total net sales $ 747,288 $ 809,981 $ 2,241,895 $ 2,423,852 The following table presents the Company’s revenues disaggregated by sales channel. Sales and usage-based taxes are excluded from revenues. Three Months Ended Nine Months Ended Sales channel September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Warehouse and reload $ 622,981 $ 683,072 $ 1,843,942 $ 2,065,212 Direct 140,505 143,026 445,606 405,335 Customer discounts and rebates (16,198) (16,117) (47,653) (46,695) Total net sales $ 747,288 $ 809,981 $ 2,241,895 $ 2,423,852

Debt and Finance Lease Obliga_2

Debt and Finance Lease Obligations (Tables)	9 Months Ended
	Sep. 28, 2024
Debt Disclosure [Abstract]
Schedule of Debt and Finance Lease Obligations	As of September 28, 2024 and December 30, 2023, debt and finance lease obligations consisted of the following: September 28, 2024 December 30, 2023 (In thousands) Senior Secured Notes (“2029 Notes”) (1) $ 300,000 $ 300,000 Revolving Credit Facility (2) — — Finance lease obligations (3) 293,810 285,426 593,810 585,426 Unamortized debt issuance costs (2,629) (3,246) Unamortized bond discount costs (2,638) (3,011) 588,543 579,169 Less: current portion of finance lease obligations 12,547 11,178 Total, net of current portion $ 575,996 $ 567,991 (1) As of September 28, 2024 and December 30, 2023, long-term debt was comprised of $300 million of Senior Secured Notes (“2029 Notes”) issued in October 2021. These notes are presented under the Long-term debt caption of the Company’s unaudited condensed consolidated balance sheets at $294.7 million and $293.7 million as of September 28, 2024 and December 30, 2023, respectively. This balance sheet presentation is net of unamortized discount of $2.6 million and $3.0 million, respectively, and unamortized debt issuance costs of $2.6 million and $3.2 million, respectively, as of September 28, 2024 and December 30, 2023. The Senior Secured Notes are presented in this table at their face value. (2) Available borrowing capacity under the Revolving Credit Facility was $346.5 million as of September 28, 2024 and December 30, 2023. The available borrowing capacity reflects undrawn letters of credit. (3) Refer to Note 8, Leases , for interest rates associated with finance lease obligations. Amounts on this line include $125.1 million and $125.0 million as of September 28, 2024 and December 30, 2023, respectively, for sale-leasebacks of real estate in fiscal 2019 and 2020 that did not qualify for sale treatment for accounting purposes. Interest expense, net on the Company’s unaudited condensed consolidated statements of operations consisted of the following components: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Interest expense $ 11,668 $ 11,394 $ 35,958 33,977 Interest income 7,049 5,817 21,914 14,402 Interest expense, net $ 4,619 $ 5,577 $ 14,044 $ 19,575

Net Periodic Pension Cost (Be_2

Net Periodic Pension Cost (Benefit) (Tables)	9 Months Ended
	Sep. 28, 2024
Retirement Benefits [Abstract]
Schedule of Net Periodic Pension Cost for Pension Plans	The Company incurred the following net periodic pension (benefit) cost for the following periods: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Service cost (1) $ — $ — $ — $ — Interest cost on projected benefit obligation — 1,105 — 3,314 Expected return on plan assets — (812) — (2,437) Amortization of unrecognized gain — 301 — 905 Settlement loss adjustment (2) (2,226) — (2,226) — Net periodic pension (benefit) cost $ (2,226) $ 594 $ (2,226) $ 1,782 (1) Service cost not a part of net periodic pension benefit as the pension plan was frozen for all participants. (2) Represents an adjustment for the settlement charge originally recognized during the fourth quarter of fiscal 2023 related to settlement of the Company’s frozen defined benefit pension plan.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 28, 2024
Leases [Abstract]
Schedule of Supplemental Balance Sheet Information	The following table presents the assets and liabilities related to the Company’s leases as of September 28, 2024 and December 30, 2023: Lease Assets and Liabilities September 28, 2024 December 30, 2023 (In thousands) Assets Classification Operating lease right-of-use assets Operating lease right-of-use assets $ 45,647 $ 37,227 Finance lease right-of-use assets (1) Property and equipment, net 136,958 138,357 Total lease right-of-use assets $ 182,605 $ 175,584 Liabilities Current portion: Operating lease liabilities Operating lease liabilities - current $ 8,276 $ 6,284 Finance lease liabilities Finance lease liabilities - current 12,547 11,178 Non-current portion: Operating lease liabilities Operating lease liabilities - noncurrent 38,752 32,519 Finance lease liabilities Finance lease liabilities - noncurrent 281,263 274,248 Total lease liabilities $ 340,838 $ 324,229 (1 ) Finance lease right-of-use assets are presented net of accumulated amortization of $111.4 million and $102.9 million as of September 28, 2024 and December 30, 2023, respectively. Supplemental balance sheet information related to leases is as follows: Balance Sheet Information September 28, 2024 December 30, 2023 ($ in thousands) Finance leases Property and equipment $ 248,322 $ 241,276 Accumulated depreciation (111,364) (102,919) Property and equipment, net $ 136,958 $ 138,357 Weighted Average Remaining Lease Term (in years) Operating leases 8.44 8.88 Finance leases 17.87 19.94 Weighted Average Discount Rate Operating leases 8.18 % 8.74 % Finance leases 8.80 % 8.84 % The major categories of the Company’s obligations under finance leases as of September 28, 2024 and December 30, 2023 are as follows: Category September 28, 2024 December 30, 2023 (In thousands) Equipment and vehicles $ 50,752 $ 42,252 Real estate (1) 243,058 243,174 Total finance leases $ 293,810 $ 285,426 (1) Amounts include $125.1 million and $125.0 million as of September 28, 2024 and December 30, 2023, respectively, for sale-leasebacks of real estate in fiscal 2019 and 2020 that did not qualify for sale treatment for accounting purposes.
Schedule of Lease Cost	The compon ents of lease expense were as follows: Three Months Ended Nine Months Ended Components of lease expense September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Operating lease expense: Operating lease expense before sublease income $ 2,886 $ 2,755 $ 7,965 $ 8,789 Sublease income (900) (1,062) (2,648) (2,475) Operating lease expense $ 1,986 $ 1,693 $ 5,317 $ 6,314 Finance lease expense: Amortization of right-of-use assets $ 4,716 $ 5,408 $ 14,478 $ 12,190 Interest on lease liabilities 6,407 6,077 19,108 18,158 Total finance lease expense $ 11,123 $ 11,485 $ 33,586 $ 30,348 Supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Cash flow information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows, operating leases $ 2,930 $ 2,367 $ 8,132 $ 8,958 Operating cash flows, finance leases $ 6,407 $ 6,077 $ 19,108 $ 18,158 Financing cash flows, finance leases $ 3,255 $ 2,393 $ 9,666 $ 6,659 Non-cash supplemental cash flow information related to leases is as follows: Three Months Ended Nine Months Ended Non-cash information September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 (In thousands) Right-of-use assets obtained in exchange for lease obligations Operating leases $ 3,183 $ — $ 14,515 $ — Finance leases $ 5,560 $ 7,877 $ 16,710 $ 11,277
Schedule of Operating Lease Maturities	Below is a summary of undiscounted finance and operating lease liabilities that have initial terms in excess of one year as of September 28, 2024. The table also includes a reconciliation of the future undiscounted cash flows to the present value of the finance and operating lease liabilities included in the unaudited condensed consolidated balance sheet, including options to extend lease terms that are reasonably certain of being exercised. Fiscal Year: Operating Leases Finance Leases (In thousands) 2024 $ 2,932 $ 9,999 2025 11,074 37,057 2026 8,089 40,487 2027 7,138 34,900 2028 6,885 35,093 Thereafter 30,713 504,048 Total lease payments $ 66,831 $ 661,584 Less: imputed interest (19,803) (367,774) Total $ 47,028 $ 293,810
Schedule of Finance Lease Maturities	Below is a summary of undiscounted finance and operating lease liabilities that have initial terms in excess of one year as of September 28, 2024. The table also includes a reconciliation of the future undiscounted cash flows to the present value of the finance and operating lease liabilities included in the unaudited condensed consolidated balance sheet, including options to extend lease terms that are reasonably certain of being exercised. Fiscal Year: Operating Leases Finance Leases (In thousands) 2024 $ 2,932 $ 9,999 2025 11,074 37,057 2026 8,089 40,487 2027 7,138 34,900 2028 6,885 35,093 Thereafter 30,713 504,048 Total lease payments $ 66,831 $ 661,584 Less: imputed interest (19,803) (367,774) Total $ 47,028 $ 293,810

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 28, 2024
Equity [Abstract]
Schedule of Changes in Balances for Each Component of Accumulated Other Comprehensive Loss	As of September 30, 2023, the components of accumulated other comprehensive loss were as follows: Defined Other, Total Accumulated Other Comprehensive Loss (In thousands) September 30, 2023 balances $ (31,986) $ 1,241 $ (30,745)

Earnings Per Share and Stockh_2

Earnings Per Share and Stockholders' Equity (Tables)	9 Months Ended
	Sep. 28, 2024
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The reconciliations of basic net income and diluted earnings per common share for the three and nine month periods ended September 28, 2024 and September 30, 2023 are as follows: Three Months Ended Nine Months Ended September 28, 2024 September 30, 2023 September 28, 2024 September 30, 2023 Net income (in thousands) $ 16,016 $ 24,382 $ 47,844 $ 66,660 Weighted-average shares outstanding - Basic 8,496,383 8,935,851 8,622,616 9,009,812 Dilutive effect of share-based awards 31,927 34,343 24,015 17,646 Weighted-average shares outstanding - Diluted 8,528,310 8,970,194 8,646,631 9,027,458 Basic earnings per share $ 1.88 $ 2.72 $ 5.54 $ 7.39 Diluted earnings per share $ 1.87 $ 2.71 $ 5.53 $ 7.38

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Inventory [Line Items]
Inventory write-down		$ 2,400
Cost of goods and services sold	$ (621,619)		$ (670,735)	$ (1,866,101)	$ (2,015,264)
Increase to gross margin percentage	1%
Inventory adjustments, refund	$ 3,800			20,700
Inventory adjustments, refund, interest	700			$ 2,700
Inventory Write-Down, Lower-of-Cost-and-Net-Realizable Value, Sold
Inventory [Line Items]
Cost of goods and services sold	$ 2,400

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 1	$ 1	$ 3	$ 3.2

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 747,288	$ 809,981	$ 2,241,895	$ 2,423,852
Warehouse and reload
Disaggregation of Revenue [Line Items]
Net sales	622,981	683,072	1,843,942	2,065,212
Direct
Disaggregation of Revenue [Line Items]
Net sales	140,505	143,026	445,606	405,335
Customer discounts and rebates
Disaggregation of Revenue [Line Items]
Net sales	(16,198)	(16,117)	(47,653)	(46,695)
Specialty products
Disaggregation of Revenue [Line Items]
Net sales	519,000	558,851	1,562,300	1,697,679
Structural products
Disaggregation of Revenue [Line Items]
Net sales	$ 228,288	$ 251,130	$ 679,595	$ 726,173

Debt and Finance Lease Obliga_3

Debt and Finance Lease Obligations - Schedule of Debt and Finance Lease Obligations (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Debt Instrument [Line Items]
Senior Secured Notes (“2029 Notes”)	$ 300,000	$ 300,000
Finance lease obligations	293,810	285,426
Total debt, gross	593,810	585,426
Unamortized debt issuance costs	(2,629)	(3,246)
Unamortized bond discount costs	(2,638)	(3,011)
Long-term debt	588,543	579,169
Less: current portion of finance lease obligations	12,547	11,178
Total, net of current portion	575,996	567,991
Long-term debt, excluding current maturities	294,733	293,743
Financing obligation from sale leaseback	125,100	125,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Revolving Credit Facility	0	0
Line of credit facility, remaining borrowing capacity	$ 346,500	$ 346,500

Debt and Finance Lease Obliga_4

Debt and Finance Lease Obligations - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Debt Disclosure [Abstract]
Interest expense	$ 11,668	$ 11,394	$ 35,958	$ 33,977
Interest income	7,049	5,817	21,914	14,402
Interest expense, net	$ 4,619	$ 5,577	$ 14,044	$ 19,575

Debt and Finance Lease Obliga_5

Debt and Finance Lease Obligations - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Debt Instrument [Line Items]
Amortization of debt discount and issuance costs	$ 300,000	$ 300,000	$ 990,000	$ 989,000
Interest expense, import duties			1,200,000
Inventory adjustments, refund, interest	700,000		2,700,000
Interest expense	11,668,000	11,394,000	35,958,000	33,977,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit	0		0		$ 0
Line of credit facility, remaining borrowing capacity	346,500,000		346,500,000		346,500,000
Qualified accounts	872,800,000		872,800,000		$ 868,200,000
6.0% Senior Secured Notes Due 2029 | Senior Notes
Debt Instrument [Line Items]
Interest expense	$ 4,500,000	$ 4,500,000	$ 13,500,000	$ 13,500,000
Stated interest rate	6%		6%

Net Periodic Pension Cost (Be_3

Net Periodic Pension Cost (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Retirement Benefits [Abstract]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost on projected benefit obligation	0	1,105	0	3,314
Expected return on plan assets	0	(812)	0	(2,437)
Amortization of unrecognized gain	0	301	0	905
Settlement loss adjustment	(2,226)	0	(2,226)	0
Net periodic pension (benefit) cost	$ (2,226)	$ 594	$ (2,226)	$ 1,782

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock based compensation expense	$ 3.2		$ 3	$ 6.9	$ 9.5
Increase for cost recognition		$ 1.7
Unearned compensation for share-based grants	$ 23			23
Nonvested award, cost				$ 14.2
Common stock available for future issuance (in shares)	506,044			506,044

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024 USD ($) option	Sep. 30, 2023 USD ($)	Sep. 28, 2024 USD ($) option	Sep. 30, 2023 USD ($)	Dec. 30, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Number of options | option	1		1
Operating lease, renewal term	5 years		5 years
Finance lease, renewal term	5 years		5 years
Unamortized deferred gain	$ 68,200		$ 68,200		$ 70,500
Amortization of deferred gains on real estate	$ 984	$ 984	$ 2,952	$ 2,952
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	1 year		1 year
Finance lease, term of contract	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, term of contract	15 years		15 years
Finance lease, term of contract	15 years		15 years

Leases - Schedule of Assets and

Leases - Schedule of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Assets
Operating lease right-of-use assets	$ 45,647	$ 37,227
Finance lease right-of-use assets	136,958	138,357
Total lease right-of-use assets	182,605	175,584
Current portion:
Operating lease liabilities	8,276	6,284
Finance lease liabilities	12,547	11,178
Non-current portion:
Operating lease liabilities	38,752	32,519
Finance lease liabilities	281,263	274,248
Total lease liabilities	340,838	324,229
Accumulated depreciation	$ 111,364	$ 102,919
Finance lease, right-of-use asset, statement of financial position	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Leases [Abstract]
Operating lease expense before sublease income	$ 2,886	$ 2,755	$ 7,965	$ 8,789
Sublease income	(900)	(1,062)	(2,648)	(2,475)
Operating lease expense	1,986	1,693	5,317	6,314
Amortization of right-of-use assets	4,716	5,408	14,478	12,190
Interest on lease liabilities	6,407	6,077	19,108	18,158
Total finance lease expense	$ 11,123	$ 11,485	$ 33,586	$ 30,348

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow and Non-Cash Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows, operating leases	$ 2,930	$ 2,367	$ 8,132	$ 8,958
Operating cash flows, finance leases	6,407	6,077	19,108	18,158
Financing cash flows, finance leases	3,255	2,393	9,666	6,659
Right-of-use assets obtained in exchange for lease obligations
Operating leases	3,183	0	14,515	0
Finance leases	$ 5,560	$ 7,877	$ 16,710	$ 11,277

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Finance leases
Property and equipment	$ 248,322	$ 241,276
Accumulated depreciation	(111,364)	(102,919)
Property and equipment, net	$ 136,958	$ 138,357
Weighted Average Remaining Lease Term (in years)
Operating leases	8 years 5 months 8 days	8 years 10 months 17 days
Finance leases	17 years 10 months 13 days	19 years 11 months 8 days
Weighted Average Discount Rate
Operating leases	8.18%	8.74%
Finance leases	8.80%	8.84%
Total finance leases	$ 293,810	$ 285,426
Finance lease, right-of-use asset, statement of financial position	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Financing obligation from sale leaseback	$ 125,100	$ 125,000
Equipment and vehicles
Weighted Average Discount Rate
Total finance leases	50,752	42,252
Real estate
Weighted Average Discount Rate
Total finance leases	$ 243,058	$ 243,174

Leases - Schedule of Lease Matu

Leases - Schedule of Lease Maturities (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Operating Leases
2024	$ 2,932
2025	11,074
2026	8,089
2027	7,138
2028	6,885
Thereafter	30,713
Total lease payments	66,831
Less: imputed interest	(19,803)
Total	47,028
Finance Leases
2024	9,999
2025	37,057
2026	40,487
2027	34,900
2028	35,093
Thereafter	504,048
Total lease payments	661,584
Less: imputed interest	(367,774)
Total	$ 293,810	$ 285,426

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 28, 2024 USD ($)	Sep. 28, 2024 USD ($) agreement
Gain Contingencies [Line Items]
Percentage of employees represented by various labor unions	18.40%	18.40%
Number of CBAs up for renewal, next fiscal year agreement | agreement		2
Employees are up for renewal	1.30%	1.30%
Unpaid Duties
Gain Contingencies [Line Items]
Regulatory liability	$ 8	$ 8
Reduction in regulatory liability	$ 0.3	$ 8

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances	$ 655,589	$ 652,332	$ 653,221	$ 634,286	$ 631,512	$ 622,771	$ 610,749	$ 590,029
Total Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances					(30,745)	$ (30,970)	$ (31,184)	$ (31,412)
Defined Benefit Pension Plan, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances					(31,986)
Other, net of tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balances					$ 1,241

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 28, 2024
Effective Income Tax Rate Reconciliation [Line Items]
Effective tax rate	26%	27.20%	24.90%	25.90%
Forecast
Effective Income Tax Rate Reconciliation [Line Items]
Effective tax rate					26%

Earnings Per Share and Stockh_3

Earnings Per Share and Stockholders' Equity - Schedule of Basic Net Income and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income	$ 16,016	$ 14,336	$ 17,492	$ 24,382	$ 24,466	$ 17,812	$ 47,844	$ 66,660
Weighted-average shares outstanding - Basic (in shares)	8,496,383			8,935,851			8,622,616	9,009,812
Dilutive effect of share-based awards (in shares)	31,927			34,343			24,015	17,646
Weighted-average shares outstanding - Diluted (in shares)	8,528,310			8,970,194			8,646,631	9,027,458
Basic earnings per share (in dollars per share)	$ 1.88			$ 2.72			$ 5.54	$ 7.39
Diluted earnings per share (in dollars per share)	$ 1.87			$ 2.71			$ 5.53	$ 7.38

Earnings Per Share and Stockh_4

Earnings Per Share and Stockholders' Equity - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 25, 2024	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Oct. 31, 2023	May 03, 2022	Aug. 23, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share repurchase authorization						$ 100,000,000	$ 100,000,000	$ 25,000,000
Stock repurchased (in shares)		145,548	216,507	297,951	358,212
Average price per share (in dollars per share)		$ 103.08	$ 84.93	$ 100.63	$ 83.52
Stock repurchased and retired, excluding federal excise taxes		$ 15,000,000	$ 11,500,000	$ 30,000,000	$ 29,900,000
Remaining authorized amount		$ 61,500,000		$ 61,500,000		$ 3,700,000
Subsequent Event
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock repurchased (in shares)	43,240
Average price per share (in dollars per share)	$ 106.34
Stock repurchased and retired, excluding federal excise taxes	$ 4,600,000
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted shares calculation (in shares)		6,299	103,152	1,644	161,572
Performance Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted shares calculation (in shares)		139,654	112,252	139,654	112,252

Fair Value Disclosures (Details

Fair Value Disclosures (Details) - USD ($) $ in Millions	Sep. 28, 2024	Dec. 30, 2023
6.0% Senior Secured Notes Due 2029 | Senior Notes
Fair Value, by Balance Sheet Grouping [Line Items]
Long-term debt fair value	$ 290	$ 273