Audit Information |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Audit Information [Abstract] | |
| Auditor Firm ID | 238 |
| Auditor Name | PricewaterhouseCoopers LLP |
| Auditor Location | Phoenix, Arizona |
Consolidated Balance Sheets (Parenthetical) - $ / shares |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value (in USD per share) | $ 0.01 | $ 0.01 |
| Common stock authorized (in shares) | 850,000,000 | 850,000,000 |
| Common stock issued (in shares) | 100,724,862 | 88,517,521 |
| Common stock outstanding (in shares) | 100,724,862 | 88,517,521 |
Consolidated Statements of Operations - USD ($) shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Total revenue, net | $ 2,982,781,000 | $ 2,637,229,000 | $ 2,899,276,000 |
| Total cost of revenue | 2,736,215,000 | 2,416,557,000 | 2,625,834,000 |
| Gross profit | 246,566,000 | 220,672,000 | 273,442,000 |
| Selling, general and administrative expenses | 126,464,000 | 107,247,000 | 110,344,000 |
| Amortization of intangible assets | 27,281,000 | 26,642,000 | 26,670,000 |
| Goodwill impairment | 0 | 0 | 213,992,000 |
| Operating income (loss) | 92,821,000 | 86,783,000 | (77,564,000) |
| Interest expense, net | 78,428,000 | 90,515,000 | 97,476,000 |
| Other income, net | (194,000) | (376,000) | (64,000) |
| Income (loss) before income taxes | 14,587,000 | (3,356,000) | (174,976,000) |
| Income tax (benefit) expense | (8,063,000) | 3,466,000 | 9,530,000 |
| Net income (loss) | 22,650,000 | (6,822,000) | (184,506,000) |
| Net income (loss) attributable to noncontrolling interests | 255,000 | (98,000) | 1,670,000 |
| Net income (loss) attributable to common stock | $ 22,395,000 | $ (6,724,000) | $ (186,176,000) |
| Earnings (loss) per share attributable to common stock: | |||
| Basic (in USD per share) | $ 0.25 | $ (0.08) | $ (2.60) |
| Diluted (in USD per share) | $ 0.25 | $ (0.08) | $ (2.60) |
| Shares used in computing earnings per share: | |||
| Weighted average basic shares outstanding (in shares) | 90,000 | 83,286 | 71,666 |
| Weighted average diluted shares outstanding (in shares) | 90,295 | 83,286 | 71,666 |
| Nonrelated Party | |||
| Total revenue, net | $ 2,885,193,000 | $ 2,530,394,000 | $ 2,782,845,000 |
| Total cost of revenue | 2,645,244,000 | 2,319,744,000 | 2,520,420,000 |
| Related Party | |||
| Total revenue, net | 97,588,000 | 106,835,000 | 116,431,000 |
| Total cost of revenue | 90,971,000 | 96,813,000 | 105,414,000 |
| Gross profit | 6,617,000 | 10,022,000 | 11,017,000 |
| Selling, general and administrative expenses | $ 500,000 | $ 1,300,000 | |
Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Statement of Comprehensive Income [Abstract] | |||
| Net income (loss) | $ 22,650 | $ (6,822) | $ (184,506) |
| Other comprehensive income (loss), net of tax: | |||
| Foreign currency translation adjustment | 5,836 | (9,184) | 2,469 |
| Other comprehensive income (loss), net of tax | 5,836 | (9,184) | 2,469 |
| Comprehensive income (loss) | 28,486 | (16,006) | (182,037) |
| Comprehensive income (loss) attributable to noncontrolling interests | 255 | (98) | 1,670 |
| Total comprehensive income (loss) attributable to common stock | $ 28,231 | $ (15,908) | $ (183,707) |
Description of Business |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Description of Business | Description of Business Organization Structure Centuri Holdings, Inc. (“Holdings” and, collectively with the Operating Company (as defined below) and its consolidated subsidiaries, the “Company” or “Centuri”) was formed as a Delaware corporation in June 2023. Holdings was formed for the purpose of completing an initial public offering and facilitating the separation of Centuri Group, Inc. (the “Operating Company”) from Southwest Gas Holdings, Inc. (“Southwest Gas Holdings”) in order to carry on the business of the Operating Company. On April 13, 2024, Holdings issued 71,664,592 shares of common stock to Southwest Gas Holdings as consideration for the transfer of assets and assumption of liabilities of the Operating Company (“the Separation”). Following the completion of the Separation, the Operating Company became a wholly owned subsidiary of Holdings, and all of Holdings’ operations are conducted through the Operating Company. The Operating Company is considered to be Holdings’ predecessor for accounting purposes. Description of Operations The Company is a North American utility and energy infrastructure services company, and it partners with regulated utilities to maintain, upgrade, and expand the energy network that powers millions of homes and businesses. The Company’s service offerings primarily consist of the modernization of utility infrastructure through the replacement, maintenance, retrofitting and installation of electric and natural gas distribution and utility-scale transmission networks and building capacity to meet current and future demands. The Company operates through a family of complementary companies working together across different geographies to establish solid customer relationships and a strong reputation for a wide range of capabilities. Separation from Southwest Gas Holdings On April 17, 2024, the registration statement related to the initial public offering of Holdings’ common stock was declared effective, and Holdings’ common stock began trading on the New York Stock Exchange (“NYSE”) under the ticker “CTRI” (the “Centuri IPO”) on April 18, 2024. On April 22, 2024, the Centuri IPO and a concurrent private placement were completed with total final net proceeds to the Company of $327.7 million. As of the closing of the Centuri IPO, Southwest Gas Holdings owned 71,665,592 shares of Holdings’ common stock (“CTRI shares”), or approximately 81% of the total outstanding CTRI shares. Subsequent to the Centuri IPO, Southwest Gas Holdings divested all of its remaining ownership interest in the Company through the course of several transactions described in more detail below. The Company did not receive any proceeds from any of these transactions. •On May 22, 2025 and June 18, 2025, Southwest Gas Holdings completed secondary public offerings, selling a total of 21,562,500 CTRI shares, with additional private placements closing on May 22, 2025 and July 8, 2025, in which Southwest Gas Holdings sold a total of 3,917,382 CTRI shares to Icahn Partners LP and Icahn Partners Master Fund LP, investment entities associated with Carl C. Icahn (“Icahn Partners”). After these transactions, Southwest Gas Holdings owned 46,185,710 CTRI shares, or approximately 52% of total outstanding CTRI shares. •On August 11, 2025, Southwest Gas Holdings completed another secondary public offering of 17,250,000 CTRI shares and concurrent private placement to Icahn Partners of 1,573,500 CTRI shares (together, the “August sell-down”). After completion of the August sell-down, Southwest Gas Holdings owned 27,362,210 CTRI shares, or approximately 31% of total outstanding CTRI shares, resulting in (i) the loss of its controlling interest in the Company and (ii) the Company ceasing to be a “controlled company” under the NYSE rules. •On September 5, 2025, Southwest Gas Holdings completed a final secondary public offering (the “Final Disposition”) of its remaining 27,362,210 CTRI shares. As a result, Southwest Gas Holdings no longer holds any ownership interest in the Company and relinquished governance rights originally afforded to it under the Separation Agreement, including the right to nominate any members of the Company’s Board of Directors (the “Board”) and to approve certain of the Company’s corporate actions. For additional information about the Separation Agreement and other agreements signed as part of the Separation and Centuri IPO, refer to “Note 17 — Related Parties.” Sale of Common Stock On November 14, 2025, the Company completed an underwritten public offering of 7,441,860 CTRI shares and concurrent private placement to Icahn Partners of 3,488,372 CTRI shares. The underwriters in the public offering subsequently exercised their option to purchase an additional 1,116,279 CTRI shares in December 2025 (the public offering, including the exercise of the underwriters’ option to purchase additional shares, and private placement are hereafter referred to together as the “November Offering”). The Company received total net proceeds of $250.9 million from the November Offering. As a result of the November Offering, Icahn Partners’ ownership increased to approximately 14.2% of total outstanding CTRI shares. The Company primarily used the net proceeds from the November Offering to repay borrowings outstanding under its credit agreement and to fund the acquisition of Connect, which closed on November 18, 2025. Refer to “Note 8 — Acquisitions” for additional details about the Connect acquisition, and “Note 12 — Long-Term Debt” for additional details about the Company’s remaining debt obligations under its credit agreement.
|
Basis of Presentation and Summary of Significant Accounting Policies |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Accounting Policies [Abstract] | |
| Basis of Presentation and Summary of Significant Accounting Policies | Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Prior to August 11, 2025, the Company was also an operating segment of Southwest Gas Holdings. The Company’s consolidated financial statements have been prepared on a standalone basis. The consolidated statements of operations include all revenues and costs directly attributable to Centuri’s operations. The consolidated statements of operations also include an allocation of expenses related to certain Southwest Gas Holdings corporate functions, including corporate governance, internal audit, tax compliance and other general and administrative cost. The Company’s use of shared service support from Southwest Gas Holdings and the associated expense allocation decreased following the Centuri IPO in April 2024, and materially ceased following the Final Disposition in September 2025. For more information regarding related party transactions with Southwest Gas Holdings, including the amount of expenses historically allocated, see “Note 17 — Related Parties”. The Company believes the allocation methodology is reasonable for all periods presented. However, the allocations may not reflect the expenses the Company would have incurred as a standalone public entity for the periods presented. A number of factors, including the chosen organizational structure, division between outsourced and in-house functions and strategic decisions, would impact the actual costs incurred by the Company. The Company has determined that it is not practicable to determine these standalone costs for the periods presented. As a result, the consolidated financial statements are not indicative of the Company’s financial condition, results of operations or cash flows had it operated as a standalone public entity during the periods presented, and results in the consolidated financial statements are not indicative of the Company’s future financial condition, results of operations or cash flows. Income tax amounts in the consolidated financial statements for fiscal years 2024 and 2023 were calculated using the separate return method and presented as if the Company’s operations were separate taxpayers in their respective jurisdictions, which may or may not have reflected the actual tax filing positions of the Company. Income tax amounts in the consolidated financial statements for fiscal year 2025 include the allocation of certain tax assets as part of income tax deconsolidation from Southwest Gas Holdings, as discussed further in “Income Taxes” below. The Company uses a 52/53-week fiscal year that ends on the Sunday closest to the end of the calendar year. Unless otherwise stated, references to years in the Company’s consolidated financial statements relate to fiscal years rather than calendar years. Unless the context otherwise requires, references to 2025, 2024, and 2023 refer to the fiscal years ended December 28, 2025, December 29, 2024 and December 31, 2023, respectively. Fiscal years 2025, 2024, and 2023 each had 52 weeks. Principles of Consolidation and Noncontrolling Interests The accompanying consolidated financial statements reflect the accounts of the Company, all majority-owned subsidiaries and variable interest entities in which the Company or a subsidiary is the primary beneficiary. All intercompany transactions and balances have been eliminated. The Company is required to perform an analysis each reporting period to determine if it is the primary beneficiary of any company that meets the definition of a variable interest entity (“VIE”). The determination of the primary beneficiary is focused on identifying which enterprise has both the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses or receive benefits from the VIE. See “Note 7 — Equity Method Investments” for more information. The Company also reports a separate component within temporary equity in the consolidated financial statements for the redeemable common stock associated with the minority position related to Riggs Distler & Company, Inc. (“Riggs Distler”), which also represents a noncontrolling interest (“NCI”). The balance of redeemable common stock is reported as the greater of the carrying amount or fair market value. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. The Company reviews all significant estimates affecting its consolidated financial statements on a recurring basis and records the effect of any necessary adjustments in the applicable period. These estimates are based on management’s best knowledge of current events, historical experience, actions that the Company may undertake in the future and various other assumptions that are believed to be reasonable under the circumstance. As a result, actual results could differ from those estimates. Significant estimates in the consolidated financial statements include: useful lives of property and equipment and identifiable intangible assets; the fair value assumptions in analyzing property and equipment, identifiable intangible assets, goodwill, and redeemable noncontrolling interests; allowances for doubtful accounts; revenue recognized under fixed-price contracts; accrued compensation; provision for income taxes; uncertain tax positions; and estimates and assumptions used in the accounting for business combinations. Revenue Recognition The Company derives revenue primarily through its diverse array of service solutions to North America’s gas and electric utility providers. Electric power infrastructure services also include storm restoration services, including the repair of infrastructure damaged by inclement weather, and the energized installation, maintenance and upgrade of electric power infrastructure. In addition, the Company performs certain industrial and other construction services for various customers and industries. The Company generally has two types of agreements with its customers: master services agreements (“MSAs”) and bid contracts. An MSA identifies most of the terms describing each party’s rights and obligations that will govern future work authorizations. An MSA is often effective for multiple years. A work authorization is issued by the customer to describe the location, timing, unit of work and any additional information necessary to complete the work for the customer. The combination of the MSA and the work authorization determines when a contract exists and revenue recognition may begin. Each work authorization is generally a single performance obligation as the Company is performing a significant integration service. The Company utilizes the portfolio method practical expedient at the customer level as the terms and conditions of MSAs are similar in nature for each customer, but the actual services provided can vary significantly between customers. A bid contract is typically a one-time agreement for a specific project that has all necessary terms defining each party’s respective rights and obligations. Each bid contract is evaluated for revenue recognition individually. Control of assets created under bid contracts generally passes to the customer over time. Bid contracts often have a single performance obligation as the Company is performing a significant integration service. For revenue recognition purposes, the Company’s MSAs and bid contracts are characterized as either unit-price, time-and-materials (“T&M”) or fixed-price. The majority of the Company’s work is performed under unit-price contracts, which generally state prices per unit of installation, or T&M contracts, which are billed as labor hours are incurred, materials are utilized and services are performed. For unit-price and T&M contracts, an output method is used to measure progress towards satisfaction of a performance obligation. Typical installations are accomplished in a few weeks or less, with revenue recorded as units are completed and services are performed. Some unit-price contracts contain caps that, if encroached, trigger revenue and loss recognition similar to a fixed-price contract model. Performance obligations related to fixed-price contracts are satisfied over time because the Company’s performance typically creates or enhances an asset that the customer controls. The Company recognizes revenue on its fixed-price contracts as performance obligations are satisfied and control of the promised good and/or service is transferred to the customer by measuring the progress toward complete satisfaction of the performance obligation(s) using an input method. The input method results in the recognition of revenue based on the Company’s effort to satisfy the performance obligation relative to the total expected effort to satisfy the performance obligation. The Company uses the cost-to-cost input method to measure progress towards the satisfaction of the performance obligation in fixed-price contracts. Under the cost-to-cost input method, costs incurred to-date are generally the best depiction of transfer of control; therefore, the amount of revenue recognized on fixed-price contracts is based on costs expended to date relative to the anticipated final contract costs. All contract costs, including those associated with affirmative claims, change orders and back charges, are recorded as incurred and revisions to estimated total costs are reflected as soon as the obligation to perform is determined. Contract costs consist of direct costs on contracts, including labor and materials, amounts payable to subcontractors, direct overhead costs and equipment expense (primarily depreciation, fuel, maintenance and repairs). Most of the Company’s customers supply many of their own materials in order for the Company to complete its work under the contracts. Actual revenue and project costs can vary, sometimes substantially, from previous estimates due to changes in a variety of factors, including unforeseen circumstances not originally contemplated. These factors, along with other risks inherent in performing fixed-price contracts, may cause actual revenue and gross profit for a project to differ from previous estimates and could result in reduced profitability or losses on projects. Changes in these factors may result in revisions to costs and earnings. Revisions in estimates of costs and earnings during the course of work are reflected in the accounting period in which the facts requiring revision become known. At the time a loss on a contract becomes known or is anticipated, the entire amount of the estimated ultimate loss is recognized in the consolidated financial statements. Once identified, these types of conditions continue to be evaluated for each project throughout the project term, and ongoing revisions in management’s estimates of contract value, contract cost and contract profit are recognized as necessary in the period determined. Subsequent to the inception of a fixed-price contract, the transaction price could change for various reasons, including the executed or estimated amount of change orders and unresolved contract modifications and claims to or from customers. Changes that are accounted for as an adjustment to existing performance obligations are allocated on the same basis as established at contract inception. Otherwise, changes are accounted for as a separate performance obligation(s) and the separate transaction price is allocated as discussed above. Contracts can have consideration that is variable. For MSAs, variable consideration is evaluated at the customer level as the terms creating variability in pricing are included within the MSA and are not specific to a work authorization. For multi-year MSAs, variable consideration items are typically determined for each year of the contract and not for the full contract term. For bid contracts, variable consideration is evaluated at the individual contract level. The expected value method or most likely amount method is used based on the nature of the variable consideration. Types of variable consideration include liquidated damages, delay penalties, performance incentives, safety bonuses, payment discounts and volume rebates. The Company will estimate variable consideration and adjust financial information as necessary. Change orders may involve a modification in scope, price, or both to the current contract, and are typically agreed to in writing by both parties. Once approved, the change order is either treated as a separate contract or as part of the existing contract as appropriate under the circumstances. When the scope is agreed upon in the change order but not the price, the Company estimates the change to the transaction price. On occasion, the Company recognizes revenue related to contract claims and unapproved change orders. Contract claims and unapproved change orders occur when there is a dispute between the Company and a customer regarding a change in the scope of work and associated price for work already performed, and/or when the Company otherwise performs work above the scope of the initial contract without a formally executed change order. The Company records estimated claims and unapproved change orders as variable consideration based on the most likely amount it expects to receive, and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. The Company is required to collect taxes imposed by various governmental agencies on the work performed for its customers. These taxes are not included in revenue. Management uses the net classification method to report taxes collected from customers to be remitted to governmental authorities. See “Note 3 — Revenue and Related Balance Sheet Accounts” for additional information. Fair Value Measurements The Company categorizes assets and liabilities, measured at fair value, into one of three different levels depending on the observability of the inputs employed in the measurement. Level 1 inputs are quoted prices for identical instruments in active markets. Level 2 inputs are quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs or significant value-drivers are observable. Level 3 inputs are model-derived valuations in which one or more significant inputs or significant value-drivers are unobservable. Fair value measurements are classified according to the lowest level input or value-driver that is significant to the valuation. The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable, contract assets, book overdrafts, accounts payable, contract liabilities and accrued liabilities approximate fair value because of the short-term nature of these financial instruments. Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents primarily consist of interest-bearing demand deposits. The Company considers highly liquid investments with original maturities of less than three months, including the Company’s investments in money market funds, to be cash equivalents. Restricted cash consists of cash owned by the Company that is subject to legal restrictions on its use. Restricted cash is classified as either prepaid expenses and other current assets or other assets on the consolidated balance sheets depending on whether the Company expects to use the cash within the next fiscal year. Accounts Receivable and Allowance for Doubtful Accounts Amounts due from customers are recorded at face amounts less an allowance for doubtful accounts. The allowance is an estimate based on historical collection experience, current and estimated future economic and market conditions, and a review of the current status of each customer’s trade accounts receivable balance. Account balances are charged against the allowance when management determines it is probable that the receivable will not be recovered. Accounts receivable, net, includes only amounts that are unconditional in nature, which means only the passage of time remains and the Company has invoiced the customer. The Company is currently party to an accounts receivable securitization facility whereby it sells accounts receivable to a third-party financial institution. In accordance with ASC 860, “Transfers and Servicing,” the Company derecognizes accounts receivables sold through this facility due to its limited continuing involvement with the accounts receivable after sale. Refer to “Note 6 — Accounts Receivable Securitization Facility” for further details regarding this facility. Long-Lived Assets Property and equipment are recorded at cost and include all costs necessary to bring the asset to its intended use. Expenditures for repairs and maintenance are expensed as incurred. Expenditures for major renewals or improvements that extend the useful life of existing equipment are capitalized and depreciated over the remaining useful life of the asset. Property and equipment include the costs of on-premise software purchased or developed for internal use. Software costs are capitalized when the preliminary project stage is complete and the Company authorizes and commits to funding the project. Software costs cease to be capitalized once all substantial testing is completed. Upgrades and enhancements of internal use software are only capitalized to the extent they will result in additional functionality. Depreciation is computed using the straight-line method based on the estimated useful lives and salvage values of the related assets. Depreciation expense is recognized as a component of cost of sales or selling and general and administrative expenses within the consolidated statements of operations depending on the nature of the asset being depreciated. See “Note 4 — Segment Information” for more information. When the Company disposes of property and equipment it recognizes a gain or loss in the statements of operations, which is the result of any proceeds less the net book value of the asset being disposed. The gain or loss on disposition of assets is recognized as a component of cost of revenue or selling, general and administrative expenses within the consolidated statements of operations depending on the nature of the asset being disposed. The Company enters into certain cloud-based software hosting arrangements that are accounted for as service contracts (cloud computing arrangements or “CCAs”). The Company may incur and capitalize certain implementation costs to integrate, configure, and customize software as part of these CCAs, which is consistent with the Company’s capitalization of costs incurred during the application development stage for on-premise software. CCA implementation costs are capitalized within other assets within the consolidated balance sheets and expensed on a straight-line basis over the fixed, noncancellable term of the associated hosting arrangements plus any reasonably certain renewal periods. As of December 28, 2025 and December 29, 2024, CCA assets had a gross balance of $31.2 million and $29.6 million, accumulated amortization of $6.4 million and $2.7 million, and net value of $24.8 million and $26.9 million, respectively. Amortization of CCA assets was $3.7 million and $2.6 million for the fiscal year ended December 28, 2025 and December 29, 2024, respectively, and was included within selling, general and administrative expenses on the Company’s consolidated statement of operations. CCA amortization is classified as a cash operating expense (i.e., not included in amortization or depreciation in the Company’s consolidated financial statements), and CCA implementation expenditures are included within cash flows from operating activities. The Company’s definite-lived intangible assets consist of customer relationships, trade names and trademarks, and customer contracts backlog. Definite-lived intangible assets are amortized over a period of approximately one year to 21 years based upon the estimated consumption of their economic benefits, or on a straight-line basis if the pattern of economic benefit cannot otherwise be reliably estimated. Long-Lived Asset Impairment The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. When an evaluation is required, the estimated future undiscounted cash flows associated with the asset are compared to the asset’s carrying amount to determine if an impairment is necessary. Any impairment loss recognized is equal to the amount by which the carrying amount of the asset exceeds its fair value. For fiscal years 2025, 2024, and 2023, the Company did not recognize any significant impairment related to its long-lived assets. Goodwill Goodwill represents the excess of cost over the fair market value of net tangible and identifiable intangible assets of acquired businesses and is stated at cost. The Company has recorded goodwill in connection with certain of its business acquisitions. Goodwill is required to be measured for impairment at the reporting unit level, which represents the operating entity level or one level below the operating entity level for which discrete financial information is available. Goodwill is tested for impairment annually on the first day of the fourth fiscal quarter, or more frequently if events or circumstances arise which indicate that the fair value of a reporting unit with goodwill is below its carrying amount. The Company assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Qualitative factors assessed for each reporting unit include, among other things, deterioration in macroeconomic conditions; declining financial performance; deterioration in the operational environment; a significant change in market, management, business strategy or business climate; a loss of a significant customer; increased competition; or a decrease in the estimated fair value of a reporting unit. If the Company believes that, as a result of its qualitative assessment, it is more likely than not that the fair value of a reporting unit is less than its carrying amount, a quantitative impairment test is required. If the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recorded in the consolidated statements of operations. No goodwill impairment was recorded in fiscal years 2025 and 2024. For fiscal year 2023, the Company recognized goodwill impairment of $214.0 million for the Riggs Distler reporting unit (which is now included within the Union Electric reporting unit). See “Note 9 — Goodwill and Intangible Assets” for more information. Business Combinations The Company accounts for business combinations using the acquisition method of accounting, which requires that the purchase price, including the fair value of contingent consideration, of the acquired entity to be allocated to the assets acquired and liabilities assumed based generally on the estimated fair values at the date of acquisition. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. Acquisition-related expenses and transaction costs associated with business combinations are expensed as incurred. The determination of the fair value of assets acquired and liabilities assumed requires the Company to make subjective judgments as to projections of future operating performance, discount rates, and long-term growth rates, among other factors, which are typically level 3 inputs. The effect of these judgments then impacts the amount of the goodwill that is recorded and the amount of depreciation and amortization expense to be recognized in future periods related to tangible and intangible assets acquired. GAAP provides a “measurement period” of up to one year in which to finalize estimates associated with the acquisition of a business. Most estimates are preliminary until the end of the measurement period. During the measurement period, adjustments to initial valuations and estimates that reflect newly discovered information that existed at the acquisition date are recorded as adjustments to the goodwill balance. After the measurement date, any adjustments would be recorded as a current period gain or loss. Investments in Unconsolidated Affiliates The Company’s investments in unconsolidated affiliates are investments in entities in which the Company does not have a controlling financial interest, but over which it has significant influence. Investments in unconsolidated affiliates are included in other assets on the consolidated balance sheets. The Company’s share of allocated profit or loss from unconsolidated affiliates is included in other (income) expense, net on the consolidated statements of operations. The Company’s investment in its unconsolidated affiliate is assessed for other-than-temporary impairment when events or circumstances arise that indicate it is more likely than not that the fair value of the investment is below its carrying value. There were no events or circumstances during 2025, 2024 or 2023 that would indicate an other-than-temporary decline in the value of the Company’s investment in its unconsolidated affiliate existed. Insurance The Company utilizes a captive insurance company to insure against the risks associated with workers’ compensation, auto liability and general liability claims. The Company pays administrative fees to certain third-party administrators and consultants and pays claims incurred on a quarterly basis. In connection with these liability insurance policies, the Company is responsible for an initial deductible or self-insured retention amount per occurrence, after which the insurance carriers would be responsible for amounts up to the policy limits. For the policy year spanning May 2025 to April 2026, the Company is responsible for the first $750,000 (deductible) per occurrence under the liability insurance policies. The Company accrues for claims based on projected future losses and associated rates, as calculated by a third-party actuary company. Leases The Company determines if an arrangement is a lease at inception. If an arrangement is considered a lease, the Company determines at the commencement date whether the lease is an operating or finance lease. Finance leases are leases that meet any of the following criteria: the lease transfers ownership of the underlying asset at the end of the lease term; the lessee is reasonably certain to exercise an option to purchase the underlying asset; the lease term is for the major part of the remaining economic life of the underlying asset (except when the commencement date falls at or near the end of such economic life); the present value of the sum of the lease payments and any additional residual value guarantee by the lessee equals or exceeds substantially all of the fair value of the underlying asset; or the underlying asset is of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. A lease that does not meet any of these criteria is considered an operating lease. After the commencement date, lease cost for an operating lease is recognized over the remaining lease term on a straight-line basis, while lease cost for a finance lease is based on the depreciation of the lease asset and interest on the lease liability. A right-of-use (“ROU”) asset represents the Company’s right to use an underlying asset for the lease term, and a ROU lease liability represents the Company’s obligation to make lease payments arising from the lease. Operating and finance lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date to determine the present value of lease payments. The Company uses the implicit rate when readily determinable. The operating and finance lease ROU assets also include any lease payments made and excludes lease incentives. The Company’s operating lease terms may include options to extend or terminate the lease when it is reasonably certain the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has elected to account for lease and non-lease components as a single lease component. Leases with an initial term of twelve months or less are classified as short-term leases and are not recognized on the consolidated balance sheets unless the lease contains a purchase option that is reasonably certain to be exercised, or unless it is reasonably certain that the equipment will be leased for greater than twelve months. For sale lease-back transactions, the Company assesses whether control of the underlying asset has transferred to determine whether the transaction qualifies as a sale. Income Taxes The Company historically was included on the U.S. federal and certain state income tax returns of Southwest Gas Holdings and calculated income tax amounts using the separate return method as if the Company was a separate taxpayer to allow users to understand the financial position of the Company as a standalone taxable entity. This resulted in the Company recording net deferred tax assets primarily related to net operating losses and interest limitations under Section 163(j) of the Internal Revenue Code of 1986, as amended, which differed from tax attributes actually generated and used by Southwest Gas Holdings as the consolidated and ultimate taxable entity. As discussed in “Note 1 — Description of Business,” Southwest Gas Holdings no longer holds an equity interest in the Company, and accordingly the Company will no longer be included in Southwest Gas Holdings’ U.S. federal and state income tax returns. As a result, certain deferred tax assets previously recorded under the separate return method were removed from the consolidated balance sheet through an adjustment to additional paid-in capital. In addition, in accordance with the Company’s Tax Assets Agreement (as defined and discussed in “Note 17 — Related Parties”) with Southwest Gas Holdings, the Company was allocated $55.4 million in estimated deferred tax assets (primarily net operating losses) during the fiscal second and third quarters of 2025 as part of income tax deconsolidation. The allocation of these assets was treated as a capital contribution from Southwest Gas Holdings in additional paid-in capital as the Company was still a subsidiary of Southwest Gas Holdings at that time. Adjustments related to the realizability of deferred tax assets contributed from Southwest Gas Holdings upon deconsolidation also impacted additional paid-in capital. In the fourth quarter of 2025, after the Company had completed income tax deconsolidation and was no longer a subsidiary of Southwest Gas Holdings, a change in Southwest Gas Holdings’ estimate of 2025 taxable income resulted in a $23.7 million increase in deferred tax assets allocable to the Company, recognized as an income tax benefit in the consolidated statement of operations. The allocation of deferred tax assets may continue to change until Southwest Gas Holdings’ 2025 tax returns are filed, with future changes impacting the statement of operations. The Company has elected to treat its Global Intangible Low-Taxed Income (“GILTI”) as a current period cost when incurred and has considered the estimated GILTI impact in its tax expense. Realization of deferred tax assets is dependent on the Company’s ability to generate sufficient taxable income of an appropriate character in future periods. A valuation allowance is established if it is determined to be more likely than not a deferred tax asset will not be realized. As of December 28, 2025 and December 29, 2024, the Company had not repatriated undistributed earnings from its Canadian subsidiaries. The Company asserts that all future earnings will be permanently reinvested in the Canadian operations. Accordingly, as of December 28, 2025, no U.S. deferred income taxes have been recorded related to cumulative foreign earnings. In assessing whether uncertain tax positions should be recognized in its financial statements, management determines whether it is more-likely-than-not that a tax position will be sustained upon examination. Interest and penalties related to uncertain income tax positions, if any, are included as a component of income tax expense on the consolidated statements of operations. Foreign Currency Translation The Company’s foreign currency-denominated assets and liabilities are translated into U.S. dollars, the Company’s functional currency, at exchange rates existing at the respective balance sheet dates. Translation adjustments resulting from fluctuations in exchange rates are recorded as a separate component of accumulated other comprehensive loss. Results of operations of foreign subsidiaries are translated using monthly weighted average exchange rates during the respective periods. During 2025, 2024, and 2023, the company recorded losses of $0.1 million, $0.1 million and $0.5 million, respectively, related to foreign currency transactions. Gains and losses resulting from foreign currency transactions are included in other income, net on the consolidated statements of operations. The comparability of the Company’s financial statements has been affected by changes in the value of the Canadian dollar in relation to the U.S. dollar. The financial statement line items most significantly impacted by foreign currency volatility are accounts receivable, contract assets and liabilities, intangible assets, goodwill and long-term debt. Litigation From time to time, the Company is subject to ordinary and routine legal proceedings related to the usual conduct of its business. Accruals for such contingencies are recorded to the extent the Company concludes their occurrence is probable and the financial impact of an adverse outcome is reasonably estimable. Legal fees are recognized as incurred and are not included in accruals for contingencies. Specific legal contingencies are disclosed if the likelihood of occurrence is at least reasonably possible, and the exposure is considered material to the consolidated financial statements. In making determinations of likely outcomes of litigation matters, many factors are considered. These factors include, but are not limited to, past history, applicable evidence (and the relative weight thereof), facts and circumstances, the relevant law and the specifics and status of each matter. If the assessment of various factors changes, the estimates may change. Predicting the outcome of claims and litigation and estimating related costs and exposure involves substantial uncertainties that could cause actual costs to vary materially from estimates and accruals. See “Note 18 — Commitments and Contingencies” for more information on current legal proceedings. Collective Bargaining Agreements As of December 28, 2025, approximately 57% of the Company’s employees, primarily consisting of craft tradespeople, were covered by collective bargaining agreements. Of the 332 collective bargaining agreements to which the Company is a party, 27 expire during 2026 and 14 expire during 2027 and require renegotiation. The Company’s management and union leadership will determine if there is a need to renegotiate the terms and conditions of these contracts. Although the majority of these agreements prohibit strikes and work stoppages during the term of the agreement, the Company cannot be certain strikes or work stoppages will not occur in the future. Strikes or work stoppages could adversely impact the Company’s relationships with its customers and could have an adverse effect on its business. Earnings (Loss) Per Share The Company computes earnings (loss) per share using the treasury stock method. Under the treasury stock method, basic earnings (loss) per share are computed by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding during the period, and diluted earnings (loss) per share are computed by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding during the period plus all potentially dilutive common stock equivalents, except in cases where the effect of the common stock equivalent would be anti-dilutive. Recent Accounting Pronouncements Recently Adopted Guidance In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The update enhances income tax disclosure requirements. This update became effective for the Company beginning with this Annual Report, and is reflected on a prospective basis within “Note 14 — Income Taxes”. New Accounting Pronouncements Not Yet Adopted In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” The update enhances the level of detail available related to reporting about expenses. This update will be effective for the Company beginning with the annual reporting for the fiscal year ending 2027. The Company is currently evaluating the impact the rules will have on its disclosures. There are no other recently issued accounting standards updates that are currently expected to be adopted or material to the Company effective in fiscal 2025 or thereafter.
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Revenue and Related Balance Sheet Accounts |
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| Revenue from Contract with Customer [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue and Related Balance Sheet Accounts | Revenue and Related Balance Sheet Accounts The following table presents the Company’s revenue from contracts with customers disaggregated by contract type (in thousands):
Contract assets and liabilities consisted of the following (in thousands):
Contract assets primarily consist of revenue earned on contracts in progress in excess of billings, which relates to the Company’s rights to consideration for work completed but not billed and/or approved at the reporting date as well as contract retention balances. Contract assets that are not expected to be invoiced and collected within a year of the financial statement date (“Non-current contract assets”) are included in other assets on the consolidated balance sheets. Revenue earned on contracts in progress in excess of billings are transferred to accounts receivable when the rights become unconditional. Current contract assets included retention balances of approximately $40.6 million and $27.3 million as of December 28, 2025 and December 29, 2024, respectively. As of December 28, 2025 and December 29, 2024, the Company had recorded approximately $47.8 million ($19.7 million non-current in other assets) and $24.8 million ($13.0 million non-current), respectively, in contract assets related to net recovery claims and unapproved change orders. Total contract assets increased $164.0 million during the fiscal year ended December 28, 2025. The Company had a significant increase in revenue between periods, including on large bid projects in which billings are subject to completion of milestones, and large MSAs in which customer approval is contractually required before invoices can be issued. These contractual requirements are standard to many of the Company’s contracts and the approval process rarely results in meaningful adjustments to revenue. However, this process occasionally slows down the billing process when customer employees need to review large volumes of work. Contract assets are recoverable from the Company’s customers based upon various measures of performance, including achievement of certain milestones, completion of specified units or completion of a contract. In addition, many of the Company’s T&M contract arrangements are billed in arrears pursuant to contract terms that are standard within the industry, resulting in revenue earned on contracts in progress in excess of billings and/or unbilled receivables being recorded as revenue is recognized in advance of billings. The lag in billing due to the aforementioned contractual provisions may create circumstances in which material changes to a customer’s business, cash flows or financial condition, which may be impacted by negative economic or market conditions, could affect the Company’s ability to bill and subsequently collect amounts due. These changes may result in the need to record an estimate of the amount of loss from uncollectible receivables. Contract liabilities primarily consist of amounts billed in excess of revenue earned related to the advance consideration received from customers for which work has not yet been completed. The increase in the contract liability balance of $25.5 million from December 29, 2024 to December 28, 2025 was due to additional payments received in advance of work completed and balances added due to the acquisition of Connect, net of approximately $21.3 million of revenue recognized that was included in the balance as of December 29, 2024. The Company considers retention and unbilled amounts to customers to be conditional contract assets, as payment is contingent on the occurrence of a future event. Accounts receivable, net, includes only amounts that are unconditional in nature, which means only the passage of time remains and the Company has invoiced the customer. Similarly, contract liabilities include amounts billed in excess of revenue earned on contracts in progress related to fixed-price, unit-price and T&M contracts. In the event contract assets or contract liabilities are expected to be recognized more than one year from the financial statement date, the Company classifies those amounts as long-term contract assets or contract liabilities, included in other assets or other long-term liabilities, respectively, on the consolidated balance sheets. Similarly, accounts receivable balances expected to be collected beyond one year are recorded as long-term within other assets. For contracts where payment is expected to be collected less than one year from when services are performed (as determined at contract inception), the Company uses the practical expedient and does not consider the time value of money. For contracts with an original duration of one year or less, the Company has not disclosed the transaction price for the remaining performance obligations as of the end of each reporting period or the related timing of revenue recognition. As of December 28, 2025, the Company had 60 fixed-price contracts with an original duration of more than one year. The aggregate amount of the transaction price allocated to the unsatisfied performance obligations of these contracts as of December 28, 2025 was $411.4 million. The Company expects to recognize the remaining performance obligations of these contracts over approximately the next 2 years; however, the timing of that recognition is largely within the control of the customer, including when the necessary equipment and materials required to complete the work will be provided by the customer. Accounts receivable, net consisted of the following (in thousands):
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Segment Information |
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Information | Segment Information The Company’s reportable segments are: (i) U.S. Gas Utility Services (“U.S. Gas”); (ii) Canadian Utility Services (“Canadian Operations”); (iii) Union Electric Utility Services (“Union Electric”); and (iv) Non-Union Electric Utility Services (“Non-Union Electric”). Canadian Operations was previously known as Canadian Gas Utility Services or “Canadian Gas”. The segment was renamed to reflect the expanded scope of services offered by the segment following the Company’s acquisition of Connect, which is included in this segment. The addition of Connect was the only change in the composition of this segment. The Company’s president and chief executive officer serves as the Company's chief operating decision maker (the "CODM"). The Company’s reportable segments are established in consideration of differences in services, geographic areas and workforce composition (union vs. non-union). The Company has not aggregated any operating segments into reportable segments. The CODM reviews short-term and long-term trends and budget-to-actual variances in gross profit to assess performance across the different segments in determining where to allocate resources. U.S. Gas U.S. Gas provides comprehensive services, including maintenance, replacement, repair, and installation for local natural gas distribution utilities (“LDCs”) focused on the modernization of customers’ infrastructure throughout the United States. The work performed within this segment includes solutions for all stages of utility work and is performed primarily within the distribution, utility-scale transmission and end-user infrastructure, rather than large-scale, project-based, cross-country transmission. In addition, U.S. Gas performs other underground services, including water and fiber, and has an in-house fabrication shop providing pipe and component assembly. The Company is able to cater to the needs of its gas utility services and energy customers by serving union and non-union markets. Canadian Operations Canadian Operations provides comprehensive services, including maintenance, replacement, repair, and installation for local gas and electric utilities and energy providers. A majority of the work performed in this segment is focused on distribution, urban transmission and end-user interface under MSAs for gas and electric utilities. This segment also provides storm response services and performs construction of electrical systems used in renewable energy projects. Union Electric Union Electric provides a comprehensive set of electric utility services encompassing maintenance, replacement, repair, upgrade, and expansion services for urban transmission and local distribution infrastructure within union markets. The work performed within this segment is focused primarily on recurring local distribution and urban transmission services under MSAs, as opposed to large-scale, project-based, cross-country transmission, and services are primarily focused on infrastructure between the substation and end-user meter. In addition to core electric utility infrastructure, this segment provides heavy industrial work, including civil, mechanical, electrical, and fabrication (component assembly) services. Non-Union Electric Non-Union Electric provides a comprehensive set of electric utility services encompassing maintenance, replacement, repair, upgrade and expansion services for urban transmission and local distribution infrastructure within non-union markets. The work performed within this segment is focused almost exclusively on recurring local distribution and urban transmission services under MSAs as opposed to large-scale, project-based, cross-country transmission, and services are primarily focused on infrastructure between the substation and end-user meter. Other Other consists of any corporate and non-allocated transactions. Revenue and gross profit by segment are presented below (in thousands). Revenue amounts presented are revenues with external customers, and intersegment revenues were not material.
Gross profit represents the difference between revenue and cost of revenue. Cost of revenue is a significant expense that is regularly reported to the CODM by segment. Cost of revenue by segment was as follows (in thousands):
Depreciation expense, included in cost of revenue, by segment was as follows (in thousands):
(1)Depreciation expense within selling, general and administrative expense was excluded from the table above as it is not produced or utilized by management to evaluate segment performance. Separate measures of the Company’s assets and cash flows, with the exception of capital expenditures, are not produced or utilized by the CODM to evaluate segment performance, as defined by ASC 280. The CODM does not use total assets by segment as a basis for decision making. Capital expenditures by segment were as follows (in thousands):
Foreign Operations During fiscal years 2025, 2024 and 2023, the Company earned $246.9 million, $197.9 million and $234.8 million, respectively, in Canada, which comprised 8% of consolidated revenue for all fiscal years presented. The remainder of the Company’s revenue was earned within the United States. Revenue is attributed to countries based on the location of where services are performed. In addition, as of December 28, 2025 and December 29, 2024 the Company had $85.3 million and $56.2 million of current assets, $256.8 million and $181.6 million of long-lived assets and $139.5 million and $110.0 million of net assets, respectively, in Canada.
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Per Share Information |
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| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Per Share Information | Per Share Information The amounts used to compute basic and diluted earnings (loss) per share attributable to common stock consisted of the following (in thousands):
Potentially dilutive securities for the fiscal year ended December 29, 2024 were de minimis, and there were none for the fiscal year ended December 31, 2023.
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Accounts Receivable Securitization Facility |
12 Months Ended |
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Dec. 28, 2025 | |
| Transfers and Servicing [Abstract] | |
| Accounts Receivable Securitization Facility | Accounts Receivable Securitization Facility In September 2024, the Company entered into a three-year accounts receivable securitization facility for an aggregate amount of up to $125.0 million (the “Securitization Facility”), with PNC Bank, National Association (“PNC"), to enhance the Company's financial flexibility by providing additional liquidity. Under the Securitization Facility, certain designated subsidiaries of the Company may sell or contribute their accounts receivable and contract assets generated in the ordinary course of their businesses and certain related assets to an indirect wholly owned bankruptcy-remote Special Purpose Entity (“SPE”) of the Company created specifically for this purpose. The SPE is a variable interest entity, and the Company is the primary beneficiary and therefore consolidates the SPE. The SPE transfers ownership and control of accounts receivable to PNC for payments as set forth in the agreement. The Company accounts for accounts receivable sold to the banking counterparty as a sale of financial assets and has derecognized the accounts receivable from the consolidated balance sheet for the current period. The total outstanding balance of accounts receivable that had been sold and derecognized was $125.0 million as of December 28, 2025. The Company had no unused capacity on the Securitization Facility as of both December 28, 2025 and December 29, 2024. Additionally, the SPE owned accounts receivable and contract assets of $60.2 million and $115.6 million, respectively, as of December 28, 2025 and $45.2 million and $78.3 million, respectively, as of December 29, 2024 which were not sold to PNC. These balances are primarily included in accounts receivable, net and contract assets (and the accompanying related party captions) in the Company’s consolidated balance sheet, with certain non-current balances being included in other assets. During the fiscal years ended December 28, 2025 and December 29, 2024, the Company incurred $7.0 million and $2.2 million, respectively, in yield fees on the Securitization Facility, which were recorded in interest expense, net on the Company’s consolidated statements of operations.
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Equity Method Investments |
12 Months Ended |
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Dec. 28, 2025 | |
| Equity Method Investments and Joint Ventures [Abstract] | |
| Equity Method Investments | Equity Method Investments The Company has an indirect 50% equity interest in W.S. Nicholls Western Construction Ltd. (“WSN Western”). The Company determined WSN Western qualifies as a variable interest entity. The Company also determined it is not the primary beneficiary, as it lacks the ability to unilaterally direct the activities that most significantly affect the operations of WSN Western, including strategy, contracting, bonding and other significant operating decisions. The Company has therefore not consolidated WSN Western and has accounted for it under the equity method of accounting. The net carrying value of the Company’s investment in WSN Western, which is recorded in other assets on the consolidated balance sheets, was $11.5 million and $10.9 million as of December 28, 2025 and December 29, 2024, respectively. At times, the Company is an indemnifying party on construction bonds that secure performance of certain projects of WSN Western through its bonding arrangement. Therefore, outstanding bonds were added to the Company’s investment balance in determining the Company’s maximum exposure to losses of WSN Western. The Company’s maximum exposure to loss was $11.8 million and $10.9 million as of December 28, 2025 and December 29, 2024, respectively. The Company recognized income related to its investment in WSN Western of $0.2 million, $0.2 million and $0.5 million in other income, net for fiscal years 2025, 2024 and 2023, respectively. The Company received dividends of $0.2 million during each of the fiscal years 2025, 2024 and 2023.
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Acquisitions |
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| Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Acquisitions | Acquisitions On November 18, 2025, the Company completed the acquisition of the equity interests in Connect, an Atlantic Canada electric utility services provider, for an estimated $58.0 million in total cash consideration, subject to post-closing conditions and net working capital adjustments. Total cash consideration included payment for cash held by Connect as of the closing date. The Company also assumed certain long-term debt and finance lease obligations as part of the acquisition. The total cash consideration of $58.0 million also included approximately $1.4 million of cash deposited into escrow, which is payable over time to members of Connect management who held equity interests in Connect prior to the acquisition by the Company. The cash held in escrow is considered to be owned by the Company but legally restricted. Refer to “Note 16 — Supplemental Cash Flow Disclosures” for details on the financial statement classification of this balance. Continued employment is not a condition of payment of escrow and therefore the Company considers the deferred payment to be consideration rather than compensation. These members of Connect management are also eligible to earn additional incentive awards based on the performance of Connect over the next three years, subject to continued employment. These payments are not expected to be material and will be recorded as compensation expense over the service period to the extent amounts are probable of being paid. The acquisition of Connect expanded the Company’s electric service offerings into Canada. Funding for the acquisition was provided by proceeds of a public offering and concurrent private placement discussed in “Note 1 — Description of Business”. Assets acquired and liabilities assumed in the transaction were recorded at their acquisition date fair values except as otherwise required by applicable guidance. Transaction costs associated with the acquisition were expensed as incurred. The Company’s allocation of the purchase price was based on an evaluation of the appropriate fair values and represented management’s best estimate based on available data (including market data, data regarding customers of the acquired businesses, terms of acquisition-related agreements, analysis of historical and projected results, and other types of data). The analysis included consideration of types of intangibles that were acquired, including customer relationships, trade name, and backlog. These intangibles were valued utilizing a discounted cash flow method. Determining the fair values of these intangible assets is judgmental in nature and requires the use of significant estimates and assumptions, including the attrition rate, revenue growth rate, gross profit percentage, and discount rate for the customer relationships intangible asset and the royalty rate and discount rate for the trade name intangible asset. The estimated value of assets acquired and liabilities assumed as of November 18, 2025 were as follows (in thousands, translated at the acquisition date Canadian Dollar to U.S. Dollar spot rate):
The amounts allocated to major classes of intangible assets were as follows (gross carrying amount in thousands):
The Company recorded $22.5 million of goodwill as a result of the acquisition, which has been assigned to the Canadian Operations reporting unit. Goodwill consists of the value associated with the assembled workforce and the estimated economic value attributable to future opportunities related to the transaction. Goodwill acquired in the Connect acquisition is not expected to be tax-deductible. Connect recognized approximately $8.7 million in revenue in fiscal 2025 subsequent to the acquisition, and the impact to earnings was not material. The Company incurred approximately $2.2 million in acquisition costs in fiscal year 2025, which were recorded within selling, general and administrative costs within the consolidated statement of operations. Unaudited pro forma information Unaudited pro forma consolidated revenue, net was $3.06 billion for fiscal year 2025 and $2.69 billion for fiscal year 2024. The pro forma impact on earnings of the acquisition was not material. The unaudited pro forma financial information is provided for information purposes only and is not necessarily indicative of the results of operations that would have occurred had the Acquisitions been completed on January 1, 2024, nor is the unaudited pro forma financial information indicative of future results of operations.
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Goodwill and Intangible Assets |
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| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets | Goodwill and Intangible Assets Changes in the carrying amount of goodwill of each of the Company’s reportable segments were as follows (in thousands):
(1)Net of accumulated impairment of $10.8 million as of December 28, 2025, December 29, 2024 and December 31, 2023. (2)Net of accumulated impairment of $391.1 million as of December 28, 2025, December 29, 2024 and December 31, 2023. In connection with the annual goodwill assessment for fiscal years 2025, 2024 and 2023, the Company performed a qualitative goodwill assessment of its reporting units. Other than the Union Electric reporting unit in fiscal year 2024 and the Riggs Distler reporting unit (now included in the Union Electric reporting unit) in fiscal year 2023, the results of the qualitative assessment did not indicate that it was more likely than not that the fair value of each reporting unit analyzed was less than the carrying value including goodwill, and no goodwill impairment was recognized. For the Union Electric reporting unit in fiscal year 2024 and the Riggs Distler reporting unit in fiscal year 2023, management determined that triggering events occurred, and performed a quantitative assessment as of the fiscal year 2024 and 2023 assessment dates utilizing a weighted combination of the income approach (discounted cash flow method) and a market approach (guideline public company method). Under the discounted cash flow method, the Company determined fair value based on the estimated future cash flows of the reporting unit, discounted to present value using a risk-adjusted industry weighted average cost of capital, which reflects the overall level of inherent risk for the reporting unit and the rate of return an outside investor would expect to earn. Under the guideline public company method, the Company determined the estimated fair value by applying public company multiples to the reporting units’ historical and projected results, including a reasonable control premium. The public company multiples are based on peer group multiples adjusted for size, volatility and risk. The inputs used in the fair value measurement of the reporting units was the lowest level (Level 3) inputs. The key assumptions used to determine the fair value of the reporting units during the annual impairment assessment were: (a) expected cash flow for a period of five years based on the Company’s best estimate of revenue growth rates and projected operating margins; (b) a terminal value based upon terminal growth rates; (c) a discount rate based on the Company’s best estimate of the weighted average cost of capital adjusted for risks associated with the reporting units; (d) the selection of the reporting units peer group; and (e) an implied control premium based on the Company’s best estimate of the premium that would be appropriate to convert the reporting unit value to a controlling interest basis. Recent operating performance, along with key assumptions for specific customer and industry opportunities, were also utilized during the annual impairment assessment. For fiscal 2024, the terminal growth rate used in the assessment was 3.0%. The discount rate used in the assessment was 10.0%, and the control premium supportable by market research and available data was 15.0%. The assessment resulted in the fair value of the Union Electric reporting unit being significantly above its carrying value and no goodwill impairment was recognized. For fiscal 2023, the terminal growth rate used in the assessment was 3.0%. The discount rate used in the assessment was 12.5%, and the control premium supportable by market research and available data was 15.0%. The assessment resulted in the fair value of the Riggs Distler reporting unit being below its carrying value. As a result, the Company recognized an impairment charge of $214.0 million in the fourth quarter of 2023. Key drivers of the impairment included the cancellation of an offshore wind project in the fourth quarter of fiscal year, as well as lower than expected earnings during fiscal 2023. The goodwill impairment charge did not affect the Company’s compliance with its financial covenants and conditions under its credit agreements. The Company’s definite-lived intangible assets and respective carrying values were as follows (in thousands, except for weighted average amortization periods, which are in years):
Amortization expense for definite-lived intangible assets was $27.3 million, $26.6 million and $26.7 million for fiscal years 2025, 2024, and 2023, respectively. The estimated future aggregate amortization expense of definite-lived intangible assets as of December 28, 2025 is as follows (in thousands):
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Property and Equipment |
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| Property, Plant and Equipment [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property and Equipment | Property and Equipment Property and Equipment Property and equipment consisted of the following (in thousands):
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Accrued Expenses and Other Current Liabilities |
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| Payables and Accruals [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accrued Expenses and Other Current Liabilities | Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consisted of the following (in thousands):
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Long-Term Debt |
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| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-Term Debt | Long-Term Debt Long-term debt, including outstanding amounts on the Company’s line of credit, consisted of the following (in thousands):
(1)Fair values as of December 28, 2025 and December 29, 2024 were determined using discount rates commensurate with the Company’s credit rating. On August 27, 2021, the Company entered into an amended and restated credit agreement. The agreement provided for a $1.145 billion secured term loan facility, at a discount of 1.00%, and a $400 million secured revolving credit facility. On July 9, 2025, the Company signed the sixth amendment to its amended and restated credit agreement to refinance and replace in full the existing term loan facility with an $800 million term loan facility, $93.6 million of which is comprised of new term loans used to refinance existing indebtedness and $706.4 million of which was used to refinance existing term loans. This amendment also increased the maximum principal amount of the senior secured revolving credit facility from $400 million to $450 million. This multi-currency facility allows the Company to request loan advances in either Canadian dollars or U.S. dollars. Amounts borrowed and repaid under the revolving line of credit portion of the facility are available to be re-borrowed. As a result of the refinance, the Company’s term loan facility, previously set to mature on August 27, 2028, is now set to mature on July 9, 2032, and the revolving credit facility, previously set to mature on August 27, 2026, is now set to mature on July 9, 2030. As a result of prepayments made in the fourth fiscal quarter of 2025, the Company no longer has an obligation to make principal payments on the term loan facility until maturity. The Company evaluated whether modification or extinguishment accounting should be applied on a lender-by-lender basis in association with the refinance. The results of this analysis are summarized below: •Term loan facility: $1.9 million in unamortized debt issuance costs were written-off related to debt extinguishments, and $6.0 million in third-party fees related to debt modifications were expensed. These $7.9 million in costs were recorded within interest expense, net on the statement of operations. A total of $3.7 million in new lender and third-party costs incurred in the refinance were capitalized as a reduction in long-term debt and will be amortized over the life of the term loan facility. •Revolving credit facility: $0.4 million in unamortized debt issuance costs were written-off related to debt extinguishments and recorded within interest expense, net on the statement of operations. A total of $1.5 million in new third-party fees were capitalized and will be amortized over the life of the revolving credit facility. These capitalized costs are recorded within other assets on the consolidated balance sheet. The obligations under the credit agreement are secured by present and future ownership interests in substantially all direct and indirect subsidiaries of the Company, substantially all of the tangible and intangible personal property of each borrower, and all products, profits, and proceeds of the foregoing. The Company’s assets securing the facility as of December 28, 2025 totaled $2.3 billion. The credit agreement also contains a restriction on dividend payments with an available amount generally defined as $65.0 million plus 50% of the Company’s consolidated net income since the beginning of the third fiscal quarter of 2025 adjusted for certain items, such as parent capital contributions, redeemable noncontrolling interest payments, and dividend payments, among other adjustments, as applicable. The applicable margin for the newly amended revolving credit facility ranges from 1.25% to 2.25% for SOFR and Canadian Overnight Repo Rate Average (“CORRA”) loans and from 0.25% to 1.25% for base rate loans, depending on the Company’s net leverage ratio. After the refinance, the term loan facility had a fixed margin of 1.25% for base rate loans and 2.25% for SOFR loans, which was 0.25% lower than the rates prior to the sixth amendment. The table below summarizes the weighted average interest rates on the term loan facility and revolving credit facility as of the end of December 28, 2025 and December 29, 2024:
On January 12, 2026, the Company entered into the seventh amendment to our amended and restated credit agreement, which (i) repriced the term loan, (ii) decreased the fixed margin for SOFR loans from 2.25% to 2.00% and (iii) decreased the fixed margin for base rate loans from 1.25% to 1.00%. The aggregate principal amount of each term loan under the sixth amendment outstanding immediately prior to the effective date of the seventh amendment was deemed to be exchanged for seventh amendment term loans in an equal aggregate principal amount, the proceeds of which were applied to prepay in full any sixth amendment term loans that were not exchanged. As of January 12, 2026, the aggregate principal amount of the seventh amendment term loans was $616.0 million. Immediately prior to the sixth amendment, the Company was required to maintain a leverage ratio of 4.00 to 1.00, and an interest coverage ratio of greater than a minimum of 2.50 to 1.00 under the revolving credit facility. Pursuant to the sixth amendment signed on July 9, 2025, the Company is required to maintain a leverage ratio of 4.50 to 1.00 for any future quarter ending prior to September 30, 2026, and 4.00 to 1.00 for any quarter ending on or after September 30, 2026. The requirement to maintain an interest coverage ratio of greater than a minimum of 2.50 to 1.00 remains unchanged. As of December 28, 2025, the Company was in compliance with all of the financial covenants under the revolving credit facility. The Company is required to pay a commitment fee on the unused portion of the commitments which ranges from 0.15% to 0.35% per annum, depending on the Company’s net leverage ratio. As of December 28, 2025 and December 29, 2024, the Company had borrowings outstanding of $0.7 billion and $0.8 billion, respectively, under its amended and restated credit agreement. The amount available under the revolving line of credit is further reduced by the amount of any outstanding letters of credit issued by the Company under the agreement. Accordingly, there was $302.4 million, net of outstanding letters of credit, of unused capacity on the revolving line of credit as of December 28, 2025. The Company had $68.6 million and $64.6 million of unused letters of credit available as of December 28, 2025 and December 29, 2024, respectively. Debt issuance costs associated with the Company’s line of credit are amortized over the term of the related line of credit. As of December 28, 2025 and December 29, 2024, there was $2.9 million and $3.0 million, respectively, in debt issuance costs recorded in other assets on the consolidated balance sheets. As of December 28, 2025, the Company had $34.7 million of surety-backed letters of credit issued outside of its amended and restated credit agreement. Debt issuance costs associated with the Company’s term loan facility are amortized over the term of the related debt, which approximates the effective interest method. As of December 28, 2025 and December 29, 2024, debt issuance costs of $10.8 million and $11.8 million, respectively, were recorded as a reduction to long-term debt on the consolidated balance sheets. Amortization expense related to debt issuance costs is recorded as a component of interest expense in the consolidated statements of operations. During the fiscal years ended December 28, 2025, December 29, 2024 and December 31, 2023 amortization of debt issuance costs was $3.6 million, $5.3 million and $4.5 million, respectively. As of December 28, 2025, the Company had six U.S. equipment term loans with initial amounts totaling approximately $150 million, with certain owned equipment used as collateral. The loans are serviced in U.S. dollars. The fair value of the Company’s debt as of December 28, 2025 and December 29, 2024 was $0.7 billion and $0.9 billion, respectively. The carrying value of the Company’s revolving credit facility approximates fair value given interest rates on the revolving credit facility approximate market rates, and typically draws on the revolving credit facility are paid back in a short period of time. The fair values of the Company’s term loan facility and equipment loans were determined utilizing a market-based valuation approach, where fair values are determined based on evaluated pricing data, and as such are categorized as Level 2 in the hierarchy. As of December 28, 2025, future principal payments required to be made on existing debt obligations (excluding finance lease obligations, which are discussed in “Note 13 — Leases”) are set forth in the table below (in thousands):
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Leases |
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| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | Leases The Company has operating and finance leases for corporate and field offices, equipment yards, construction equipment and transportation vehicles. The Company is currently not a lessor in any significant lease arrangements. The Company’s leases have remaining lease terms of up to 13 years. Some of these leases include options to extend the leases, generally for optional terms of up to five years, and some include options to terminate the leases within one year. The equipment leases may include variable payment terms in addition to the fixed lease payments if machinery is used in excess of the standard work periods. The occurrence of these variable payments is not probable under the Company’s current operating environment and has not been included in consideration of lease payments. Leases with an initial term of 12 months or less are classified as short-term leases and are not recognized on the consolidated balance sheets unless the lease contains a purchase option that is reasonably certain to be exercised, or unless it is reasonably certain that the equipment or property will be leased for greater than 12 months. Due to the seasonality of the Company’s operations, expense for short-term leases will fluctuate throughout the year with higher expense typically incurred during the periods when revenue is the greatest. As of December 28, 2025, the Company did not have any significant executed lease agreements that had not yet commenced. The components of lease expense were as follows (in thousands):
(1)Depreciation is included within cost of revenue in the accompanying consolidated statements of operations. (2)Short-term lease cost includes both leases and rentals with initial terms of 12 months or less. Supplemental cash flow information related to leases was as follows (in thousands):
Supplemental information related to leases was as follows:
The following is a schedule of maturities of lease liabilities as of December 28, 2025 (in thousands):
Certain leases require the Company to pay variable property taxes, insurance and maintenance costs that have been excluded from the minimum lease payments in the above tables as they are variable in nature. During the fiscal year ended December 28, 2025, the Company entered into sale-leaseback transactions for certain of its machinery and equipment. These sales generated $37.8 million in proceeds and resulted in the addition of operating lease right-of-use assets and lease liabilities of approximately $30.0 million. The Company recorded a net gain of $5.9 million as a result of these transactions. The leases will carry terms of 4 to 7 years. In addition to the sale-leaseback transactions, the Company also entered into several hundred long-term equipment leases (increase in operating lease right-of-use assets of $42.3 million) focused primarily on obtaining longer-term control over equipment that was previously being used under short-term rental agreements.
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| Leases | Leases The Company has operating and finance leases for corporate and field offices, equipment yards, construction equipment and transportation vehicles. The Company is currently not a lessor in any significant lease arrangements. The Company’s leases have remaining lease terms of up to 13 years. Some of these leases include options to extend the leases, generally for optional terms of up to five years, and some include options to terminate the leases within one year. The equipment leases may include variable payment terms in addition to the fixed lease payments if machinery is used in excess of the standard work periods. The occurrence of these variable payments is not probable under the Company’s current operating environment and has not been included in consideration of lease payments. Leases with an initial term of 12 months or less are classified as short-term leases and are not recognized on the consolidated balance sheets unless the lease contains a purchase option that is reasonably certain to be exercised, or unless it is reasonably certain that the equipment or property will be leased for greater than 12 months. Due to the seasonality of the Company’s operations, expense for short-term leases will fluctuate throughout the year with higher expense typically incurred during the periods when revenue is the greatest. As of December 28, 2025, the Company did not have any significant executed lease agreements that had not yet commenced. The components of lease expense were as follows (in thousands):
(1)Depreciation is included within cost of revenue in the accompanying consolidated statements of operations. (2)Short-term lease cost includes both leases and rentals with initial terms of 12 months or less. Supplemental cash flow information related to leases was as follows (in thousands):
Supplemental information related to leases was as follows:
The following is a schedule of maturities of lease liabilities as of December 28, 2025 (in thousands):
Certain leases require the Company to pay variable property taxes, insurance and maintenance costs that have been excluded from the minimum lease payments in the above tables as they are variable in nature. During the fiscal year ended December 28, 2025, the Company entered into sale-leaseback transactions for certain of its machinery and equipment. These sales generated $37.8 million in proceeds and resulted in the addition of operating lease right-of-use assets and lease liabilities of approximately $30.0 million. The Company recorded a net gain of $5.9 million as a result of these transactions. The leases will carry terms of 4 to 7 years. In addition to the sale-leaseback transactions, the Company also entered into several hundred long-term equipment leases (increase in operating lease right-of-use assets of $42.3 million) focused primarily on obtaining longer-term control over equipment that was previously being used under short-term rental agreements.
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| Income Tax Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | Income Taxes During fiscal year 2025, the Company deconsolidated from Southwest Gas Holdings for state and federal income tax purposes. As a result, in the second and third fiscal quarters of 2025, certain deferred tax assets previously recorded under the separate return method were removed from the balance sheet through an adjustment to additional paid-in capital, and the Company was allocated $55.4 million in estimated deferred tax assets (primarily net operating losses) as part of income tax deconsolidation. Subsequent to income tax deconsolidation and the Company ceasing to be a subsidiary of Southwest Gas Holdings, the estimate of deferred tax assets allocable to Centuri increased by $23.7 million, recognized as an income tax benefit increase in the consolidated statement of operations. Refer to “Note 2 — Basis of Presentation and Summary of Significant Accounting Policies — Income Taxes” for additional details. The following is a summary of income (loss) before income taxes (in thousands):
Income tax expense (benefit) consisted of the following (in thousands):
The following is a reconciliation of the federal statutory rate to the consolidated effective tax rate for fiscal year 2025 pursuant to the requirements of ASU 2023-09. which has been applied prospectively:
(1)State taxes in Pennsylvania and Illinois made up the majority (greater than 50%) of the tax expense effect in this category. As previously disclosed for the fiscal years ended December 29, 2024 and December 31, 2023, prior to the adoption of ASU 2023-09, the effective income tax rate differs from the statutory rate as follows:
The significant components of deferred tax assets and liabilities were as follows (in thousands):
In addition to deferred income tax benefit, the net deferred tax liability balance decreased due to the allocation of tax assets from Southwest Gas Holdings, partially offset by the reversal of certain deferred tax assets recorded under the separate return method, and deferred tax liabilities added through the Connect acquisition. The Company monitors on an ongoing basis the ability to utilize deferred tax assets and whether there is a need for a related valuation allowance. In evaluating the ability to recover deferred tax assets in the jurisdictions from which they arise, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies and recent results of operations. A reconciliation of the beginning and ending amount of the Company’s valuation allowance is as follows (in thousands):
As of December 28, 2025, the Company has federal net operating loss carryforwards related to U.S. operations of $301.1 million, some of which begin to expire in fiscal 2029, and $14.7 million related to Canadian operations (net of valuation allowances), which begin to expire in fiscal 2044. As of December 28, 2025, the Company has $260.2 million of state net operating loss carryforwards (net of valuation allowances). An immaterial amount of the Company’s state net operating loss carryforwards expire between 2026 and 2035, while the majority begin to expire thereafter or do not expire at all. Distributions of cash to the U.S. as dividends generally will not be subject to U.S. federal income tax. The Company has not provided foreign withholding or state income taxes on the undistributed earnings of its foreign subsidiaries, over which the Company will have sufficient influence to control the distribution of such earnings and has determined that substantially all such earnings have been reinvested indefinitely. These earnings could become subject to foreign withholding tax if they are remitted as dividends. As of December 28, 2025, the Company estimates that repatriation of these foreign earnings would generate withholding taxes and state income taxes of approximately $8.1 million. In prior years, the Company has recorded a liability for unrecognized tax benefits related to tax positions taken on its various income tax returns. This balance is recorded in other long-term liabilities. If recognized, the entire amount of unrecognized tax benefits would favorably impact the effective tax rate that is reported in future periods. In the current fiscal year, due to the income tax deconsolidation from Southwest, the Company no longer has any unrecognized tax benefits related to tax positions taken. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
With certain exceptions, the Company is no longer subject to U.S. federal, state, local, or Canadian examinations for years before fiscal 2018. On July 4, 2025, the “One Big Beautiful Bill Act” (the “OBBBA”) was signed into law. The OBBBA includes significant provisions, such as the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act and the restoration of favorable tax treatment for certain business provisions. The OBBBA has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. The OBBBA did not have a material impact on the Company’s effective tax rate for fiscal year 2025. While further evaluation is ongoing, the OBBBA is not expected to have a material impact on the Company's financial position or results of operations.
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Employee Benefits |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Retirement Benefits [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Employee Benefits | Employee Benefits Unions’ Multiemployer Pension Plans The Company contributes to several multiemployer defined benefit pension plans under the terms of collective bargaining agreements with various unions that represent certain of the Company’s employees. The multiemployer pension plan contribution rates generally are specified in the collective bargaining agreements (usually on an annual basis), and the Company contributes to the plans on a “pay-as-you-go” basis based on its union employee payrolls. The Company may also have additional liabilities imposed by law as a result of its participation in multiemployer defined benefit pension plans. The Employee Retirement Income Security Act of 1974, as amended by the Multiemployer Pension Plan Amendments Act of 1980, imposes certain liabilities upon an employer who is a contributor to a multiemployer pension plan if the employer withdraws from the plan or the plan is terminated or experiences a mass withdrawal. The Pension Protection Act of 2006 (“PPA”) also added special funding and operational rules generally applicable to plan years beginning after 2007 for multiemployer plans in the United States that are classified as “endangered,” “seriously endangered” or “critical” status based on multiple factors (including, for example, the plan’s funded percentage, cash flow position and whether it is projected to experience a minimum funding deficiency). Plans in these classifications must adopt measures to improve their funded status through a funding improvement or rehabilitation plan, as applicable, which may require additional contributions from employers (which may take the form of a surcharge on benefit contributions) and/or modifications to retiree benefits. Certain plans to which the Company contributes or may contribute in the future could be “endangered,” “seriously endangered” or “critical” status. The amount of additional funds, if any, that the Company may be obligated to contribute to these plans in the future cannot be estimated due to uncertainty of the future levels of work that require the specific use of union employees covered by these plans, as well as the future contribution levels and possible surcharges on contributions applicable to these plans. The following table summarizes plan information related to the Company’s participation in multiemployer defined benefit pension plans, including Company contributions for the last three fiscal years, the status under the PPA of the plans and whether the plans are subject to a funding improvement or rehabilitation plan or contribution surcharges. The most recent PPA zone status available in fiscal 2025, 2024 and 2023 primarily relates to the plans’ fiscal year-end in 2024, 2023, and 2022. Forms 5500 were not yet available for the majority of plan years ending in fiscal 2025, though the Company acquired Forms 5500 ending in fiscal 2025 to the extent available. The PPA zone status is based on information the Company received from the respective plans, as well as publicly available information on the U.S. Department of Labor website. The zone status is certified by the applicable plan’s actuary. Although multiple factors or tests may result in red zone or yellow zone status, plans in the red zone generally are less than 65% funded, plans in the yellow zone generally are less than 80% funded, and plans in the green zone generally are at least 80% funded. Under the PPA, red zone plans are classified as “critical” status, yellow zone plans are classified as “endangered” status and green zone plans are classified as neither “endangered” nor “critical” status. The “Subject to Financial Improvement/ Rehabilitation Plan” column indicates plans for which a financial improvement plan or a rehabilitation plan is either pending or has been implemented. The last column lists the expiration dates of the Company’s collective-bargaining agreements to which the plans are subject. Total contributions to these plans correspond to the number of union employees employed at any given time and the plans in which they participate and vary depending upon the location and number of ongoing projects at a given time and the need for union resources in connection with such projects. Information has been presented separately for individually significant plans, based on PPA funding status classification, and in the aggregate for all other plans.
(1)Certain collective bargaining agreement(s) participating in this fund is subject to automatic renewal absent cancellation by either party. (2)Multiemployer defined benefit pension plans in Canada are not subject to the reporting requirements under the PPA. Accordingly, certain information is not publicly available. The Company’s contributions to the following individually significant plans were 5% or more of the total contributions to these plans for the periods indicated based on the Forms 5500 for these plans for the plan years ended December 31, 2024 and 2023. Forms 5500 were not yet available for these plans for the plan years ending during 2025, unless specifically noted below.
Other Defined Contribution Plans The Company offers defined contribution plans to its eligible employees, regardless of whether they are covered under collective bargaining agreements. Eligibility requirements vary, as does timing of participation, matching, vesting and profit-sharing features of the plans. Contributions by the Company to these plans for fiscal years 2025, 2024 and 2023 were $16.2 million, $15.6 million and $15.2 million, respectively. Deferred Compensation Plan The Company sponsors a nonqualified deferred compensation plan that is offered to a select group of management and highly compensated employees. The plan allows participants to defer up to 80% of base salary and provides a match of 100% of contributions up to 5% of a participant’s salary. The plan also allows the Company, at its election, to credit participant accounts with discretionary contributions. Participants are 100% vested in salary deferrals, contributions, and all earnings. Participant accounts include a return based on the performance of the underlying investment options selected. Payments from the plan are designated at each annual enrollment period based on specified triggering events and are payable by lump sum or on an annual installment basis. The total amount accrued for future benefits as of December 28, 2025 and December 29, 2024 was $33.1 million and $32.0 million, respectively, and was included in other long-term liabilities on the consolidated balance sheets. To provide for future obligations related to these deferred compensation plans, the Company has invested in corporate-owned life insurance (“COLI”) policies covering certain participants in the deferred compensation plan, the underlying investments of which are intended to be aligned with the investment alternatives elected by plan participants. The COLI assets are recorded at their cash surrender value, which is considered their fair market value, and as of December 28, 2025 and December 29, 2024, the fair market values were $34.6 million and $35.6 million, respectively, and were included in other assets on the consolidated balance sheets. The level of inputs used for these fair value measurements is Level 2.
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Supplemental Cash Flow Disclosures |
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Supplemental Cash Flow Disclosures | Supplemental Cash Flow Disclosures The following table represents the Company’s supplemental cash flow information related to interest and cash taxes paid (in thousands):
During the fiscal year ended December 28, 2025, income taxes paid (net of refunds) exceeded 5% of total income taxes paid (net of refunds) in the following jurisdictions (in thousands):
Non-cash lease activity is disclosed in “Note 13 — Leases”. The following table represents the Company’s non-cash investing activity (in thousands):
(1)Represents approximately $2.1 million that is expected to be paid within the next year pursuant to working capital and other adjustments, as well as $1.4 million in non-current liabilities which are offset by restricted cash. Following is a reconciliation of the captions in the consolidated balance sheets to the consolidated statements of cash flows (in thousands):
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Related Parties |
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| Related Party Transactions [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Parties | Related Parties Southwest Gas Holdings Overview As discussed in “Note 1 — Description of Business,” Southwest Gas Holdings was the Company’s former parent and held a controlling interest in the Company until August 11, 2025, when its ownership decreased to 31% following the August sell-down. On September 5, 2025, Southwest Gas Holdings sold all of its remaining ownership interest in the Company. Southwest Gas Holdings’ chief executive officer and director continues to serve as a director on the Company’s Board. Related party transactions The Company performs various construction services for Southwest Gas Corporation, a wholly owned subsidiary of Southwest Gas Holdings. The following table represents the Company’s revenue in dollars and as a percentage of total revenue as well as gross profit in dollars and as a percentage of total gross profit relating to contracts with Southwest Gas Corporation (in thousands):
As of December 28, 2025 and December 29, 2024, approximately $11.9 million (4%) and $9.6 million (3%), respectively, of the Company’s accounts receivable, and $0.7 million and $2.6 million, respectively, of contract assets, were related to contracts with Southwest Gas Corporation. There were no significant related party contract liabilities as of December 28, 2025 or December 29, 2024 with Southwest Gas Corporation. Additionally, certain costs incurred by Southwest Gas Holdings were historically allocated to Centuri and settled in cash during the normal course of operations. The Company recorded allocated costs of $0.5 million and $1.3 million for the fiscal years ended December 29, 2024 and December 31, 2023, respectively, and de minimis costs in the fiscal year ended December 28, 2025. These costs are recorded within selling, general and administrative expenses on the Company’s consolidated statements of operations. Agreements related to the Separation In connection with the Separation and the Centuri IPO, Holdings entered into several agreements with Southwest Gas Holdings on April 11, 2024, governing the relationship of the two parties following the Separation and Centuri IPO. The Final Disposition resulted in the termination of certain of Southwest Gas Holdings’ rights under these agreements. These agreements are summarized below: •Separation Agreement: Sets forth the agreements with Southwest Gas Holdings regarding the principal actions to be taken in connection with the Separation and govern, among other matters, (1) the allocation of assets and liabilities to Centuri and Southwest Gas Holdings (including Centuri’s indemnification obligations, for potentially uncapped amounts, for certain liabilities relating to Centuri’s business activities), (2) certain matters with respect to the Centuri IPO and subsequent disposition transactions by Southwest Gas Holdings, and (3) Southwest Gas Holdings’ right to receive certain information. Southwest Gas Holdings’ right to designate members to the Holdings’ Board and approve certain Company actions terminated as a result of the Final Disposition. •Tax Matters Agreement: Sets forth responsibilities and obligations with respect to all tax matters, including tax liabilities (including responsibility and potential indemnification obligations for taxes attributable to Holdings’ business and taxes arising, under certain circumstances, in connection with the Separation), tax attributes, tax contests and tax returns (including Centuri’s inclusion in the U.S. federal consolidated group tax return, and certain other combined or similar group tax returns, with Southwest Gas Holdings for applicable tax periods following the Separation, and Centuri’s continuing joint and several liability with Southwest Gas Holdings for such tax returns). As of December 28, 2025, no amounts were owed between the two parties, and as of December 29, 2024, $0.6 million was due from the Company to Southwest Gas Holdings related to income taxes. •Registration Rights Agreement: Granted to Southwest Gas Holdings certain registration rights with respect to the CTRI shares owned by Southwest Gas Holdings following the Centuri IPO. This agreement terminated upon Southwest Gas Holdings’ sale of its remaining ownership interest on September 5, 2025. On February 24, 2025, the Company entered into an Unutilized Tax Assets Settlement Agreement (the “Tax Assets Agreement”) with Southwest Gas Holdings. The Tax Assets Agreement addresses the Company’s arrangements with Southwest Gas Holdings with respect to certain unutilized tax assets (the “Tax Assets”) that the Company has retained following deconsolidation from Southwest Gas Holdings for purposes of U.S. federal and relevant state income tax laws. Under the terms of the Tax Assets Agreement, the balance of the Tax Assets at tax deconsolidation, subject to true-up, and including the impact of any payments or deemed payments made by Southwest Gas Holdings in respect of the Tax Assets were treated as deemed capital contributions and recorded within additional paid-in capital, which resulted in an increase in Southwest Gas Holdings’ basis in its ownership of the Company’s common stock. The deemed capital contributions did not require any cash payment from the Company and had no impact on the Company’s liquidity or financial condition. As Southwest Gas Holdings no longer owns shares of the Company’s common stock, the Company will no longer be included in Southwest Gas Holdings’ U.S. federal and state income tax returns. However, Tax Assets allocated to the Company remain subject to true-up until after Southwest Gas Holdings’ U.S. federal and state tax returns for tax year 2025 are filed, with any changes after deconsolidation impacting the consolidated statements of operations. Refer to “Note 2 — Basis of Presentation and Summary of Significant Accounting Policies — Income Taxes” for additional details. Riggs Distler noncontrolling interest In November 2021, certain members of Riggs Distler management acquired a 1.42% interest in the parent company of Riggs Distler, Drum Parent LLC (“Drum”). The remaining noncontrolling interest in Drum outstanding as of December 28, 2025 was 0.80%. Former chief executive officer relationship with customer The Company’s former chief executive officer and former member of the Company’s Board began serving as the chief executive officer and president of a customer of the Company in August of 2024, and at the time was still serving as a director on the Company’s Board. Revenue with this customer for the fiscal year ended December 29, 2024 was $143.7 million. As of December 29, 2024, approximately $26.5 million (9%), and $26.0 million (11%) of the Company’s accounts receivable and contract assets, respectively, were related to contracts with this customer. There were no significant contract liabilities as of December 29, 2024 with this customer. This customer ceased to be a related party in December 2024 when the Company’s former chief executive officer resigned from the Company’s Board.
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Commitments and Contingencies |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and Contingencies | Commitments and Contingencies Legal Proceedings The Company is a named party in various legal proceedings arising from the normal course of business. Although the ultimate outcomes of active matters are currently unknown, the Company does not believe any liabilities resulting from these known matters will have a material effect on its financial position, results of operations or cash flows, unless otherwise stated below. NPL Construction Co. (“NPL”), a subsidiary of the Operating Company, is currently pursuing a contract claim for damages against the City of Chicago and related parties (collectively, the “City”), arising out of work that NPL performed for the City. NPL initiated this dispute through the City’s required administrative process on August 26, 2019. In response to NPL’s claim, the City has taken the position that it is entitled to withhold payments on amounts NPL believes it is owed for work already completed, claiming that further corrective work by NPL on the project is necessary and that withholding payment is appropriate until remediation is complete. On July 18, 2024, the administrative agency issued a decision denying NPL’s claim for damages. The Company disagrees with the decision of the administrative agency, and NPL filed a petition seeking a review of the administrative agency’s decision by the Circuit Court of Cook County Illinois on November 8, 2024. The Company intends to vigorously pursue this matter; however, the Company cannot accurately predict the ultimate outcome. The Company may be entitled to additional revenue if all of its claims for relief are awarded in the Company’s favor. However, to the extent the Company is not successful in collecting the withheld receivables, this matter could result in an additional significant loss, which is not currently estimable due to uncertainties with respect to the proceedings. The Company can provide no assurance as to whether or when there will be material developments in this matter. The Company has not accrued any reserves for this matter to date. The Company maintains liability insurance for various risks associated with its operations. In connection with its liability insurance policies, the Company is responsible for an initial deductible or self-insured retention amount per occurrence, after which the insurance carriers would be responsible for amounts up to the policy limits. Employment Agreements The Company has employment agreements with certain executives and other employees, which provide for compensation and certain other benefits and for severance payments under certain circumstances. Certain employment agreements also contain severance clauses that become effective upon a change in control of the Company. Upon the occurrence of certain defined events in the various employment agreements, the Company would be obligated to pay varying amounts to the related employees, which vary with the level of the employees’ respective responsibilities. Concentration of Credit Risk The Company provides full-service utility infrastructure services to various customers, primarily utility companies that are located throughout the U.S. and Canada. The Company is subject to concentrations of credit risk related primarily to its revenue and accounts receivable and contract asset positions with customers, which is defined as greater than or equal to 10% of the Company’s consolidated balances. No customers accounted for more than 10% of revenue during the fiscal years ended December 28, 2025, December 29, 2024 or December 31, 2023. As of December 28, 2025 and December 29, 2024, one Non-Union Electric segment customer had a combined accounts receivable and contract asset balance above 10% of the consolidated accounts receivable and contract assets balance, which was $131.9 million and $52.5 million, respectively, or approximately 19% and 10%, respectively, of the consolidated balance of these accounts. The Company primarily uses two financial banking institutions. The Company’s cash on deposit with these financial institutions exceeded the federal insurability limits as of December 28, 2025. The Company believes its cash and cash equivalents are managed by high credit quality financial institutions. Bonds and Parent Guarantees Many customers, particularly in connection with new construction, require the Company to post performance and payment bonds. These bonds provide a guarantee that the Company will perform under the terms of a contract and pay its subcontractors and vendors. In certain circumstances, the customer may demand that the surety make payments under the bond, and the Company must reimburse the surety for any expenses or outlays it incurs. The Company may also be required to post letters of credit as collateral in favor of the sureties, which would reduce the borrowing availability under its revolving credit facility. As of December 28, 2025, the Company was not aware of any outstanding material obligations for payments related to these bond obligations. Performance bonds expire at various times ranging from mechanical completion of a project to a period extending beyond contract completion in certain circumstances, and therefore a determination of maximum potential amounts outstanding requires certain estimates and assumptions. Such amounts can also fluctuate from period to period based upon the mix and level of the Company’s bonded operating activity. As of December 28, 2025, the estimated total amount of outstanding performance and payment bonds was approximately $822.8 million. The Company’s estimated maximum exposure related to the value of the performance bonds outstanding is lowered on each bonded project as the cost to complete is reduced, and each commitment under a performance bond generally extinguishes concurrently with the expiration of its related contractual obligation. The estimated cost to complete these bonded projects was approximately $385.9 million as of December 28, 2025. Additionally, from time to time, the Company guarantees certain obligations and liabilities of its subsidiaries that may arise in connection with, among other things, contracts with customers, and equipment and real estate lease obligations. These guarantees may cover all of the subsidiary’s unperformed, undischarged and unreleased obligations and liabilities under or in connection with the relevant agreement. The Company is not aware of any claims under any guarantees that are material. The responsibility under a guarantee could exceed the amount recoverable from the subsidiary alone and could materially and adversely affect the Company’s consolidated financial condition, results of operations and cash flows.
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Stock-based Compensation |
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| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock-based Compensation | Stock-based Compensation The Company maintains a stock-based compensation plan, which authorizes the granting of various equity-based incentives, including restricted stock units (“RSUs”) and performance stock units (“PSUs”). Stock compensation expense is amortized on a straight line basis over the service period, which is generally the vesting period. The fair value of the Company’s RSU and PSU awards is measured at the market price of the Company’s common stock on the grant date. PSUs are earned based on the achievement of certain performance metrics in relation to a set target, and stock compensation expense may fluctuate based on the forecasted achievement prior to vesting or actual achievement of these target metrics upon vesting. RSU grants to employees generally vest ratably on an annual basis over a three-year period following the grant date, although some awards may vest ratably on an annual basis over two years or cliff vest at the end of a shorter time period. RSU grants to non-employee directors typically vest at the end of a one-year period. PSU grants generally cliff vest at the end of a three-year period following the grant date. Forfeitures are recorded as they occur. Stock compensation expense totaled approximately $8.1 million, $2.2 million and $1.9 million for the fiscal years ended December 28, 2025, December 29, 2024 and December 31, 2023, respectively. The table below summarizes activity related to the Company’s stock-based compensation plans during the fiscal year of 2025. This table excludes RSUs and PSUs of Southwest Gas Holdings stock that were granted to certain employees of the Company prior to the Centuri IPO and fully vested during fiscal year 2025. The fair value of these outstanding Southwest Gas Holdings awards was not material as of December 29, 2024.
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Insider Trading Arrangements |
3 Months Ended |
|---|---|
Dec. 28, 2025 | |
| 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 |
Insider Trading Policies and Procedures |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Insider Trading Policies and Procedures [Line Items] | |
| Insider Trading Policies and Procedures Adopted | true |
Cybersecurity Risk Management and Strategy Disclosure |
12 Months Ended |
|---|---|
Dec. 28, 2025 | |
| Cybersecurity Risk Management, Strategy, and Governance [Line Items] | |
| Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | Risk Management and Strategy We recognize the importance of assessing, identifying, and managing material risks associated with cybersecurity threats. These risks include, among other things: operational risks; intellectual property and proprietary business information theft; fraud; extortion; harm to employees or customers; violation of privacy or security laws and other litigation and legal risk; physical damage to utility and transmission infrastructure; and reputational harm. We have implemented cybersecurity processes, technologies, and controls to aid in our efforts to assess, identify, and manage these risks. As part of our enterprise risk management program, we consider cybersecurity risks alongside other risks in our overall risk assessment process. Our enterprise risk professionals collaborate with subject matter specialists, as necessary, to gather insights for identifying material cybersecurity threats, assessing their severity, and deploying potential mitigations. We have implemented cybersecurity programs that are tailored to the distinct businesses of our segments. We conduct quarterly cybersecurity reviews with our executive leadership team. The review outlines the state of cybersecurity practices at Centuri through the lens of the NIST Cybersecurity Framework (“NIST CSF”). Details relative to the progress of specific goals and objectives are communicated to ensure alignment with leadership expectations. We have developed policies and implemented procedures to meet the security control objectives provided within the NIST CSF, as well as applicable Centuri policies. Our cybersecurity team performs a variety of internal operational risk assessment activities to track and mitigate risks to the organization. These operational practices cross a variety of management activities, and a list of these activities is maintained in a Cybersecurity Risk Register for tracking the status of risk mitigation activities, as well as the overall maturity of the organization relative to the NIST CSF. We further engage third parties to perform both targeted and holistic evaluations of our cybersecurity practices on a regular basis. Our cybersecurity team performs independent reviews of new vendors whose services may be potentially integrated within our enterprise. As part of a standardized review process, our cybersecurity team maintains a Control Assurance Toolkit to review vendor activities, practices, and controls for alignment with our policies and procedures. Resulting control recommendations are coordinated to ensure appropriate implementation during integration activities. We undertake vulnerability, attack, and penetration testing via a third-party audit. As part of our general control practices, we perform a review of service organizational controls reports for in-scope vendors to ensure adherence to generally accepted cybersecurity practices. Any reported weaknesses and associated responses are captured and evaluated for impact, and subsequently provided to our leadership for review and response. We describe whether and how risks from identified cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected or are reasonably likely to materially affect us, including our business strategy, results of operations, or financial condition, under the heading “Risks Related to Our Business and Industry” as part of our risk factor disclosures in Item 1A of this Annual Report on Form 10-K, which disclosures are incorporated by reference herein. In the last three fiscal years, we have not experienced any material cybersecurity incidents and the expenses we have incurred from cybersecurity incidents were immaterial.
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| Cybersecurity Risk Management Processes Integrated [Flag] | true |
| Cybersecurity Risk Management Processes Integrated [Text Block] | Our cybersecurity team performs independent reviews of new vendors whose services may be potentially integrated within our enterprise. As part of a standardized review process, our cybersecurity team maintains a Control Assurance Toolkit to review vendor activities, practices, and controls for alignment with our policies and procedures. Resulting control recommendations are coordinated to ensure appropriate implementation during integration activities.
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| Cybersecurity Risk Management Third Party Engaged [Flag] | true |
| Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true |
| Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | false |
| Cybersecurity Risk Board of Directors Oversight [Text Block] | The Centuri Cybersecurity Program operates under the auspices of our Board. Management oversight is delegated to our VP of Information Technology, who has over 25 years of industry experience and reports directly to our Chief Legal & Administrative Officer. Operational responsibility for daily cybersecurity activities is managed by our Cybersecurity Manager, who has 25 years of industry experience in information technology, with 15 years focusing on information technology (“IT”) risk, security, and compliance. Our Cybersecurity Manager is accountable for the assessment, monitoring, reporting, and mitigation of our cybersecurity risks. Our Cybersecurity Manager is also responsible for identifying and documenting cybersecurity risks, identifying remediation options and activities, ensuring remediation implementation, and providing on-going monitoring for changes in the Company’s overarching risk profile. On a quarterly basis, our VP of Information Technology provides a formal cybersecurity update to our Chief Legal & Administrative Officer, which highlights key metrics, events, efforts, risks, and risk mitigation activities. Our VP of Information Technology is also responsible for communicating with our Board regarding cybersecurity risks, providing our Board with regular cybersecurity briefings that facilitate the alignment and prioritization of efforts on the part of our cybersecurity team as instructed by executive leadership. Our Security Incident Response Plan (SIRP) governs the procedure for cybersecurity event escalation and notification practices. The plan uses a methodology that closely follows the “Incident Response Life Cycle” published in NIST 800-61 “Computer Security Incident Handling Guide” to manage cybersecurity incidents. In addition to managing the technical response to cybersecurity incidents using this methodology, this plan also addresses non-technical response requirements. Non-technical responses include engaging the proper Centuri personnel to determine the compliance, regulatory, legal, corporate communication, and other requirements we need to comply with to address the cybersecurity incidents. During a critical cybersecurity event, our Incident Response Team will coordinate with designees from our Disclosure Committee to ensure key details regarding event impact on data, operations, and financials and other attributes of the event are properly communicated. Upon resolution of the event, our IT leadership will compile and retain evidence regarding the event and evaluate it to determine the materiality of the event. In this process, our IT team will provide an overview of the timeline, nature, and severity of impact and highlight the attributes that would aid in the determination of materiality. Our Disclosure Committee is responsible for identifying and communicating with interested parties relative to such an event.
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| Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | Our Cybersecurity Manager is also responsible for identifying and documenting cybersecurity risks, identifying remediation options and activities, ensuring remediation implementation, and providing on-going monitoring for changes in the Company’s overarching risk profile. |
| Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | On a quarterly basis, our VP of Information Technology provides a formal cybersecurity update to our Chief Legal & Administrative Officer, which highlights key metrics, events, efforts, risks, and risk mitigation activities. Our VP of Information Technology is also responsible for communicating with our Board regarding cybersecurity risks, providing our Board with regular cybersecurity briefings that facilitate the alignment and prioritization of efforts on the part of our cybersecurity team as instructed by executive leadership. |
| Cybersecurity Risk Role of Management [Text Block] | Our Cybersecurity Manager is accountable for the assessment, monitoring, reporting, and mitigation of our cybersecurity risks. Our Cybersecurity Manager is also responsible for identifying and documenting cybersecurity risks, identifying remediation options and activities, ensuring remediation implementation, and providing on-going monitoring for changes in the Company’s overarching risk profile. On a quarterly basis, our VP of Information Technology provides a formal cybersecurity update to our Chief Legal & Administrative Officer, which highlights key metrics, events, efforts, risks, and risk mitigation activities. Our VP of Information Technology is also responsible for communicating with our Board regarding cybersecurity risks, providing our Board with regular cybersecurity briefings that facilitate the alignment and prioritization of efforts on the part of our cybersecurity team as instructed by executive leadership. |
| Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true |
| Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | Our VP of Information Technology is also responsible for communicating with our Board regarding cybersecurity risks, providing our Board with regular cybersecurity briefings that facilitate the alignment and prioritization of efforts on the part of our cybersecurity team as instructed by executive leadership. |
| Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | Management oversight is delegated to our VP of Information Technology, who has over 25 years of industry experience and reports directly to our Chief Legal & Administrative Officer. Operational responsibility for daily cybersecurity activities is managed by our Cybersecurity Manager, who has 25 years of industry experience in information technology, with 15 years focusing on information technology (“IT”) risk, security, and compliance. |
| Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | During a critical cybersecurity event, our Incident Response Team will coordinate with designees from our Disclosure Committee to ensure key details regarding event impact on data, operations, and financials and other attributes of the event are properly communicated. Upon resolution of the event, our IT leadership will compile and retain evidence regarding the event and evaluate it to determine the materiality of the event. In this process, our IT team will provide an overview of the timeline, nature, and severity of impact and highlight the attributes that would aid in the determination of materiality. Our Disclosure Committee is responsible for identifying and communicating with interested parties relative to such an event. |
| Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true |
Basis of Presentation and Summary of Significant Accounting Policies (Policies) |
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| Accounting Policies [Abstract] | |
| Basis of Presentation | Basis of Presentation The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Prior to August 11, 2025, the Company was also an operating segment of Southwest Gas Holdings. The Company’s consolidated financial statements have been prepared on a standalone basis. The consolidated statements of operations include all revenues and costs directly attributable to Centuri’s operations. The consolidated statements of operations also include an allocation of expenses related to certain Southwest Gas Holdings corporate functions, including corporate governance, internal audit, tax compliance and other general and administrative cost. The Company’s use of shared service support from Southwest Gas Holdings and the associated expense allocation decreased following the Centuri IPO in April 2024, and materially ceased following the Final Disposition in September 2025. For more information regarding related party transactions with Southwest Gas Holdings, including the amount of expenses historically allocated, see “Note 17 — Related Parties”. The Company believes the allocation methodology is reasonable for all periods presented. However, the allocations may not reflect the expenses the Company would have incurred as a standalone public entity for the periods presented. A number of factors, including the chosen organizational structure, division between outsourced and in-house functions and strategic decisions, would impact the actual costs incurred by the Company. The Company has determined that it is not practicable to determine these standalone costs for the periods presented. As a result, the consolidated financial statements are not indicative of the Company’s financial condition, results of operations or cash flows had it operated as a standalone public entity during the periods presented, and results in the consolidated financial statements are not indicative of the Company’s future financial condition, results of operations or cash flows. Income tax amounts in the consolidated financial statements for fiscal years 2024 and 2023 were calculated using the separate return method and presented as if the Company’s operations were separate taxpayers in their respective jurisdictions, which may or may not have reflected the actual tax filing positions of the Company. Income tax amounts in the consolidated financial statements for fiscal year 2025 include the allocation of certain tax assets as part of income tax deconsolidation from Southwest Gas Holdings, as discussed further in “Income Taxes” below.
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| Fiscal Period | The Company uses a 52/53-week fiscal year that ends on the Sunday closest to the end of the calendar year. Unless otherwise stated, references to years in the Company’s consolidated financial statements relate to fiscal years rather than calendar years. Unless the context otherwise requires, references to 2025, 2024, and 2023 refer to the fiscal years ended December 28, 2025, December 29, 2024 and December 31, 2023, respectively. Fiscal years 2025, 2024, and 2023 each had 52 weeks.
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| Principles of Consolidation and Noncontrolling Interests | Principles of Consolidation and Noncontrolling Interests The accompanying consolidated financial statements reflect the accounts of the Company, all majority-owned subsidiaries and variable interest entities in which the Company or a subsidiary is the primary beneficiary. All intercompany transactions and balances have been eliminated. The Company is required to perform an analysis each reporting period to determine if it is the primary beneficiary of any company that meets the definition of a variable interest entity (“VIE”). The determination of the primary beneficiary is focused on identifying which enterprise has both the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses or receive benefits from the VIE. See “Note 7 — Equity Method Investments” for more information. The Company also reports a separate component within temporary equity in the consolidated financial statements for the redeemable common stock associated with the minority position related to Riggs Distler & Company, Inc. (“Riggs Distler”), which also represents a noncontrolling interest (“NCI”). The balance of redeemable common stock is reported as the greater of the carrying amount or fair market value.
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| Use of Estimates | Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. The Company reviews all significant estimates affecting its consolidated financial statements on a recurring basis and records the effect of any necessary adjustments in the applicable period. These estimates are based on management’s best knowledge of current events, historical experience, actions that the Company may undertake in the future and various other assumptions that are believed to be reasonable under the circumstance. As a result, actual results could differ from those estimates. Significant estimates in the consolidated financial statements include: useful lives of property and equipment and identifiable intangible assets; the fair value assumptions in analyzing property and equipment, identifiable intangible assets, goodwill, and redeemable noncontrolling interests; allowances for doubtful accounts; revenue recognized under fixed-price contracts; accrued compensation; provision for income taxes; uncertain tax positions; and estimates and assumptions used in the accounting for business combinations.
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| Revenue Recognition | Revenue Recognition The Company derives revenue primarily through its diverse array of service solutions to North America’s gas and electric utility providers. Electric power infrastructure services also include storm restoration services, including the repair of infrastructure damaged by inclement weather, and the energized installation, maintenance and upgrade of electric power infrastructure. In addition, the Company performs certain industrial and other construction services for various customers and industries. The Company generally has two types of agreements with its customers: master services agreements (“MSAs”) and bid contracts. An MSA identifies most of the terms describing each party’s rights and obligations that will govern future work authorizations. An MSA is often effective for multiple years. A work authorization is issued by the customer to describe the location, timing, unit of work and any additional information necessary to complete the work for the customer. The combination of the MSA and the work authorization determines when a contract exists and revenue recognition may begin. Each work authorization is generally a single performance obligation as the Company is performing a significant integration service. The Company utilizes the portfolio method practical expedient at the customer level as the terms and conditions of MSAs are similar in nature for each customer, but the actual services provided can vary significantly between customers. A bid contract is typically a one-time agreement for a specific project that has all necessary terms defining each party’s respective rights and obligations. Each bid contract is evaluated for revenue recognition individually. Control of assets created under bid contracts generally passes to the customer over time. Bid contracts often have a single performance obligation as the Company is performing a significant integration service. For revenue recognition purposes, the Company’s MSAs and bid contracts are characterized as either unit-price, time-and-materials (“T&M”) or fixed-price. The majority of the Company’s work is performed under unit-price contracts, which generally state prices per unit of installation, or T&M contracts, which are billed as labor hours are incurred, materials are utilized and services are performed. For unit-price and T&M contracts, an output method is used to measure progress towards satisfaction of a performance obligation. Typical installations are accomplished in a few weeks or less, with revenue recorded as units are completed and services are performed. Some unit-price contracts contain caps that, if encroached, trigger revenue and loss recognition similar to a fixed-price contract model. Performance obligations related to fixed-price contracts are satisfied over time because the Company’s performance typically creates or enhances an asset that the customer controls. The Company recognizes revenue on its fixed-price contracts as performance obligations are satisfied and control of the promised good and/or service is transferred to the customer by measuring the progress toward complete satisfaction of the performance obligation(s) using an input method. The input method results in the recognition of revenue based on the Company’s effort to satisfy the performance obligation relative to the total expected effort to satisfy the performance obligation. The Company uses the cost-to-cost input method to measure progress towards the satisfaction of the performance obligation in fixed-price contracts. Under the cost-to-cost input method, costs incurred to-date are generally the best depiction of transfer of control; therefore, the amount of revenue recognized on fixed-price contracts is based on costs expended to date relative to the anticipated final contract costs. All contract costs, including those associated with affirmative claims, change orders and back charges, are recorded as incurred and revisions to estimated total costs are reflected as soon as the obligation to perform is determined. Contract costs consist of direct costs on contracts, including labor and materials, amounts payable to subcontractors, direct overhead costs and equipment expense (primarily depreciation, fuel, maintenance and repairs). Most of the Company’s customers supply many of their own materials in order for the Company to complete its work under the contracts. Actual revenue and project costs can vary, sometimes substantially, from previous estimates due to changes in a variety of factors, including unforeseen circumstances not originally contemplated. These factors, along with other risks inherent in performing fixed-price contracts, may cause actual revenue and gross profit for a project to differ from previous estimates and could result in reduced profitability or losses on projects. Changes in these factors may result in revisions to costs and earnings. Revisions in estimates of costs and earnings during the course of work are reflected in the accounting period in which the facts requiring revision become known. At the time a loss on a contract becomes known or is anticipated, the entire amount of the estimated ultimate loss is recognized in the consolidated financial statements. Once identified, these types of conditions continue to be evaluated for each project throughout the project term, and ongoing revisions in management’s estimates of contract value, contract cost and contract profit are recognized as necessary in the period determined. Subsequent to the inception of a fixed-price contract, the transaction price could change for various reasons, including the executed or estimated amount of change orders and unresolved contract modifications and claims to or from customers. Changes that are accounted for as an adjustment to existing performance obligations are allocated on the same basis as established at contract inception. Otherwise, changes are accounted for as a separate performance obligation(s) and the separate transaction price is allocated as discussed above. Contracts can have consideration that is variable. For MSAs, variable consideration is evaluated at the customer level as the terms creating variability in pricing are included within the MSA and are not specific to a work authorization. For multi-year MSAs, variable consideration items are typically determined for each year of the contract and not for the full contract term. For bid contracts, variable consideration is evaluated at the individual contract level. The expected value method or most likely amount method is used based on the nature of the variable consideration. Types of variable consideration include liquidated damages, delay penalties, performance incentives, safety bonuses, payment discounts and volume rebates. The Company will estimate variable consideration and adjust financial information as necessary. Change orders may involve a modification in scope, price, or both to the current contract, and are typically agreed to in writing by both parties. Once approved, the change order is either treated as a separate contract or as part of the existing contract as appropriate under the circumstances. When the scope is agreed upon in the change order but not the price, the Company estimates the change to the transaction price. On occasion, the Company recognizes revenue related to contract claims and unapproved change orders. Contract claims and unapproved change orders occur when there is a dispute between the Company and a customer regarding a change in the scope of work and associated price for work already performed, and/or when the Company otherwise performs work above the scope of the initial contract without a formally executed change order. The Company records estimated claims and unapproved change orders as variable consideration based on the most likely amount it expects to receive, and to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. The Company is required to collect taxes imposed by various governmental agencies on the work performed for its customers. These taxes are not included in revenue. Management uses the net classification method to report taxes collected from customers to be remitted to governmental authorities.
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| Fair Value Measurements | Fair Value Measurements The Company categorizes assets and liabilities, measured at fair value, into one of three different levels depending on the observability of the inputs employed in the measurement. Level 1 inputs are quoted prices for identical instruments in active markets. Level 2 inputs are quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which all significant inputs or significant value-drivers are observable. Level 3 inputs are model-derived valuations in which one or more significant inputs or significant value-drivers are unobservable. Fair value measurements are classified according to the lowest level input or value-driver that is significant to the valuation. The carrying amounts reported in the consolidated balance sheets for cash and cash equivalents, accounts receivable, contract assets, book overdrafts, accounts payable, contract liabilities and accrued liabilities approximate fair value because of the short-term nature of these financial instruments.
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| Cash and Cash Equivalents | Cash, Cash Equivalents and Restricted Cash Cash and cash equivalents primarily consist of interest-bearing demand deposits. The Company considers highly liquid investments with original maturities of less than three months, including the Company’s investments in money market funds, to be cash equivalents.
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| Restricted Cash | Restricted cash consists of cash owned by the Company that is subject to legal restrictions on its use. Restricted cash is classified as either prepaid expenses and other current assets or other assets on the consolidated balance sheets depending on whether the Company expects to use the cash within the next fiscal year. |
| Accounts Receivable and Allowance for Doubtful Accounts | Accounts Receivable and Allowance for Doubtful Accounts Amounts due from customers are recorded at face amounts less an allowance for doubtful accounts. The allowance is an estimate based on historical collection experience, current and estimated future economic and market conditions, and a review of the current status of each customer’s trade accounts receivable balance. Account balances are charged against the allowance when management determines it is probable that the receivable will not be recovered. Accounts receivable, net, includes only amounts that are unconditional in nature, which means only the passage of time remains and the Company has invoiced the customer. The Company is currently party to an accounts receivable securitization facility whereby it sells accounts receivable to a third-party financial institution. In accordance with ASC 860, “Transfers and Servicing,” the Company derecognizes accounts receivables sold through this facility due to its limited continuing involvement with the accounts receivable after sale. Refer to “Note 6 — Accounts Receivable Securitization Facility” for further details regarding this facility.
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| Long-Lived Assets | Long-Lived Assets Property and equipment are recorded at cost and include all costs necessary to bring the asset to its intended use. Expenditures for repairs and maintenance are expensed as incurred. Expenditures for major renewals or improvements that extend the useful life of existing equipment are capitalized and depreciated over the remaining useful life of the asset. Property and equipment include the costs of on-premise software purchased or developed for internal use. Software costs are capitalized when the preliminary project stage is complete and the Company authorizes and commits to funding the project. Software costs cease to be capitalized once all substantial testing is completed. Upgrades and enhancements of internal use software are only capitalized to the extent they will result in additional functionality. Depreciation is computed using the straight-line method based on the estimated useful lives and salvage values of the related assets. Depreciation expense is recognized as a component of cost of sales or selling and general and administrative expenses within the consolidated statements of operations depending on the nature of the asset being depreciated.When the Company disposes of property and equipment it recognizes a gain or loss in the statements of operations, which is the result of any proceeds less the net book value of the asset being disposed. The gain or loss on disposition of assets is recognized as a component of cost of revenue or selling, general and administrative expenses within the consolidated statements of operations depending on the nature of the asset being disposed.
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| Hosting Arrangements | The Company enters into certain cloud-based software hosting arrangements that are accounted for as service contracts (cloud computing arrangements or “CCAs”). The Company may incur and capitalize certain implementation costs to integrate, configure, and customize software as part of these CCAs, which is consistent with the Company’s capitalization of costs incurred during the application development stage for on-premise software. CCA implementation costs are capitalized within other assets within the consolidated balance sheets and expensed on a straight-line basis over the fixed, noncancellable term of the associated hosting arrangements plus any reasonably certain renewal periods. |
| Long-Lived Asset Impairment | Long-Lived Asset Impairment The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. When an evaluation is required, the estimated future undiscounted cash flows associated with the asset are compared to the asset’s carrying amount to determine if an impairment is necessary. Any impairment loss recognized is equal to the amount by which the carrying amount of the asset exceeds its fair value. For fiscal years 2025, 2024, and 2023, the Company did not recognize any significant impairment related to its long-lived assets.
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| Goodwill | Goodwill Goodwill represents the excess of cost over the fair market value of net tangible and identifiable intangible assets of acquired businesses and is stated at cost. The Company has recorded goodwill in connection with certain of its business acquisitions. Goodwill is required to be measured for impairment at the reporting unit level, which represents the operating entity level or one level below the operating entity level for which discrete financial information is available. Goodwill is tested for impairment annually on the first day of the fourth fiscal quarter, or more frequently if events or circumstances arise which indicate that the fair value of a reporting unit with goodwill is below its carrying amount. The Company assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Qualitative factors assessed for each reporting unit include, among other things, deterioration in macroeconomic conditions; declining financial performance; deterioration in the operational environment; a significant change in market, management, business strategy or business climate; a loss of a significant customer; increased competition; or a decrease in the estimated fair value of a reporting unit. If the Company believes that, as a result of its qualitative assessment, it is more likely than not that the fair value of a reporting unit is less than its carrying amount, a quantitative impairment test is required. If the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recorded in the consolidated statements of operations.
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| Business Combinations | Business Combinations The Company accounts for business combinations using the acquisition method of accounting, which requires that the purchase price, including the fair value of contingent consideration, of the acquired entity to be allocated to the assets acquired and liabilities assumed based generally on the estimated fair values at the date of acquisition. Any excess of the purchase price over the estimated fair value of the identifiable net assets acquired is recorded as goodwill. Acquisition-related expenses and transaction costs associated with business combinations are expensed as incurred. The determination of the fair value of assets acquired and liabilities assumed requires the Company to make subjective judgments as to projections of future operating performance, discount rates, and long-term growth rates, among other factors, which are typically level 3 inputs. The effect of these judgments then impacts the amount of the goodwill that is recorded and the amount of depreciation and amortization expense to be recognized in future periods related to tangible and intangible assets acquired. GAAP provides a “measurement period” of up to one year in which to finalize estimates associated with the acquisition of a business. Most estimates are preliminary until the end of the measurement period. During the measurement period, adjustments to initial valuations and estimates that reflect newly discovered information that existed at the acquisition date are recorded as adjustments to the goodwill balance. After the measurement date, any adjustments would be recorded as a current period gain or loss.
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| Investments in Unconsolidated Affiliates | Investments in Unconsolidated Affiliates The Company’s investments in unconsolidated affiliates are investments in entities in which the Company does not have a controlling financial interest, but over which it has significant influence. Investments in unconsolidated affiliates are included in other assets on the consolidated balance sheets. The Company’s share of allocated profit or loss from unconsolidated affiliates is included in other (income) expense, net on the consolidated statements of operations. The Company’s investment in its unconsolidated affiliate is assessed for other-than-temporary impairment when events or circumstances arise that indicate it is more likely than not that the fair value of the investment is below its carrying value. There were no events or circumstances during 2025, 2024 or 2023 that would indicate an other-than-temporary decline in the value of the Company’s investment in its unconsolidated affiliate existed.
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| Insurance | Insurance The Company utilizes a captive insurance company to insure against the risks associated with workers’ compensation, auto liability and general liability claims. The Company pays administrative fees to certain third-party administrators and consultants and pays claims incurred on a quarterly basis. In connection with these liability insurance policies, the Company is responsible for an initial deductible or self-insured retention amount per occurrence, after which the insurance carriers would be responsible for amounts up to the policy limits. For the policy year spanning May 2025 to April 2026, the Company is responsible for the first $750,000 (deductible) per occurrence under the liability insurance policies. The Company accrues for claims based on projected future losses and associated rates, as calculated by a third-party actuary company.
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| Leases | Leases The Company determines if an arrangement is a lease at inception. If an arrangement is considered a lease, the Company determines at the commencement date whether the lease is an operating or finance lease. Finance leases are leases that meet any of the following criteria: the lease transfers ownership of the underlying asset at the end of the lease term; the lessee is reasonably certain to exercise an option to purchase the underlying asset; the lease term is for the major part of the remaining economic life of the underlying asset (except when the commencement date falls at or near the end of such economic life); the present value of the sum of the lease payments and any additional residual value guarantee by the lessee equals or exceeds substantially all of the fair value of the underlying asset; or the underlying asset is of such a specialized nature that it is expected to have no alternative use to the lessor at the end of the lease term. A lease that does not meet any of these criteria is considered an operating lease. After the commencement date, lease cost for an operating lease is recognized over the remaining lease term on a straight-line basis, while lease cost for a finance lease is based on the depreciation of the lease asset and interest on the lease liability. A right-of-use (“ROU”) asset represents the Company’s right to use an underlying asset for the lease term, and a ROU lease liability represents the Company’s obligation to make lease payments arising from the lease. Operating and finance lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date to determine the present value of lease payments. The Company uses the implicit rate when readily determinable. The operating and finance lease ROU assets also include any lease payments made and excludes lease incentives. The Company’s operating lease terms may include options to extend or terminate the lease when it is reasonably certain the Company will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company has elected to account for lease and non-lease components as a single lease component. Leases with an initial term of twelve months or less are classified as short-term leases and are not recognized on the consolidated balance sheets unless the lease contains a purchase option that is reasonably certain to be exercised, or unless it is reasonably certain that the equipment will be leased for greater than twelve months. For sale lease-back transactions, the Company assesses whether control of the underlying asset has transferred to determine whether the transaction qualifies as a sale.
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| Income Taxes | Income Taxes The Company historically was included on the U.S. federal and certain state income tax returns of Southwest Gas Holdings and calculated income tax amounts using the separate return method as if the Company was a separate taxpayer to allow users to understand the financial position of the Company as a standalone taxable entity. This resulted in the Company recording net deferred tax assets primarily related to net operating losses and interest limitations under Section 163(j) of the Internal Revenue Code of 1986, as amended, which differed from tax attributes actually generated and used by Southwest Gas Holdings as the consolidated and ultimate taxable entity. As discussed in “Note 1 — Description of Business,” Southwest Gas Holdings no longer holds an equity interest in the Company, and accordingly the Company will no longer be included in Southwest Gas Holdings’ U.S. federal and state income tax returns. As a result, certain deferred tax assets previously recorded under the separate return method were removed from the consolidated balance sheet through an adjustment to additional paid-in capital. In addition, in accordance with the Company’s Tax Assets Agreement (as defined and discussed in “Note 17 — Related Parties”) with Southwest Gas Holdings, the Company was allocated $55.4 million in estimated deferred tax assets (primarily net operating losses) during the fiscal second and third quarters of 2025 as part of income tax deconsolidation. The allocation of these assets was treated as a capital contribution from Southwest Gas Holdings in additional paid-in capital as the Company was still a subsidiary of Southwest Gas Holdings at that time. Adjustments related to the realizability of deferred tax assets contributed from Southwest Gas Holdings upon deconsolidation also impacted additional paid-in capital. In the fourth quarter of 2025, after the Company had completed income tax deconsolidation and was no longer a subsidiary of Southwest Gas Holdings, a change in Southwest Gas Holdings’ estimate of 2025 taxable income resulted in a $23.7 million increase in deferred tax assets allocable to the Company, recognized as an income tax benefit in the consolidated statement of operations. The allocation of deferred tax assets may continue to change until Southwest Gas Holdings’ 2025 tax returns are filed, with future changes impacting the statement of operations. The Company has elected to treat its Global Intangible Low-Taxed Income (“GILTI”) as a current period cost when incurred and has considered the estimated GILTI impact in its tax expense. Realization of deferred tax assets is dependent on the Company’s ability to generate sufficient taxable income of an appropriate character in future periods. A valuation allowance is established if it is determined to be more likely than not a deferred tax asset will not be realized. As of December 28, 2025 and December 29, 2024, the Company had not repatriated undistributed earnings from its Canadian subsidiaries. The Company asserts that all future earnings will be permanently reinvested in the Canadian operations. Accordingly, as of December 28, 2025, no U.S. deferred income taxes have been recorded related to cumulative foreign earnings. In assessing whether uncertain tax positions should be recognized in its financial statements, management determines whether it is more-likely-than-not that a tax position will be sustained upon examination. Interest and penalties related to uncertain income tax positions, if any, are included as a component of income tax expense on the consolidated statements of operations.
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| Foreign Currency Translation | Foreign Currency Translation The Company’s foreign currency-denominated assets and liabilities are translated into U.S. dollars, the Company’s functional currency, at exchange rates existing at the respective balance sheet dates. Translation adjustments resulting from fluctuations in exchange rates are recorded as a separate component of accumulated other comprehensive loss. Results of operations of foreign subsidiaries are translated using monthly weighted average exchange rates during the respective periods. During 2025, 2024, and 2023, the company recorded losses of $0.1 million, $0.1 million and $0.5 million, respectively, related to foreign currency transactions. Gains and losses resulting from foreign currency transactions are included in other income, net on the consolidated statements of operations. The comparability of the Company’s financial statements has been affected by changes in the value of the Canadian dollar in relation to the U.S. dollar. The financial statement line items most significantly impacted by foreign currency volatility are accounts receivable, contract assets and liabilities, intangible assets, goodwill and long-term debt.
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| Litigation | Litigation From time to time, the Company is subject to ordinary and routine legal proceedings related to the usual conduct of its business. Accruals for such contingencies are recorded to the extent the Company concludes their occurrence is probable and the financial impact of an adverse outcome is reasonably estimable. Legal fees are recognized as incurred and are not included in accruals for contingencies. Specific legal contingencies are disclosed if the likelihood of occurrence is at least reasonably possible, and the exposure is considered material to the consolidated financial statements. In making determinations of likely outcomes of litigation matters, many factors are considered. These factors include, but are not limited to, past history, applicable evidence (and the relative weight thereof), facts and circumstances, the relevant law and the specifics and status of each matter. If the assessment of various factors changes, the estimates may change. Predicting the outcome of claims and litigation and estimating related costs and exposure involves substantial uncertainties that could cause actual costs to vary materially from estimates and accruals. See “Note 18 — Commitments and Contingencies” for more information on current legal proceedings.
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| Collective Bargaining Agreements | Collective Bargaining Agreements As of December 28, 2025, approximately 57% of the Company’s employees, primarily consisting of craft tradespeople, were covered by collective bargaining agreements. Of the 332 collective bargaining agreements to which the Company is a party, 27 expire during 2026 and 14 expire during 2027 and require renegotiation. The Company’s management and union leadership will determine if there is a need to renegotiate the terms and conditions of these contracts. Although the majority of these agreements prohibit strikes and work stoppages during the term of the agreement, the Company cannot be certain strikes or work stoppages will not occur in the future. Strikes or work stoppages could adversely impact the Company’s relationships with its customers and could have an adverse effect on its business.
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| Earnings (Loss) Per Share | Earnings (Loss) Per Share The Company computes earnings (loss) per share using the treasury stock method. Under the treasury stock method, basic earnings (loss) per share are computed by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding during the period, and diluted earnings (loss) per share are computed by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding during the period plus all potentially dilutive common stock equivalents, except in cases where the effect of the common stock equivalent would be anti-dilutive.
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| Recent Accounting Pronouncements | Recent Accounting Pronouncements Recently Adopted Guidance In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The update enhances income tax disclosure requirements. This update became effective for the Company beginning with this Annual Report, and is reflected on a prospective basis within “Note 14 — Income Taxes”. New Accounting Pronouncements Not Yet Adopted In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” The update enhances the level of detail available related to reporting about expenses. This update will be effective for the Company beginning with the annual reporting for the fiscal year ending 2027. The Company is currently evaluating the impact the rules will have on its disclosures. There are no other recently issued accounting standards updates that are currently expected to be adopted or material to the Company effective in fiscal 2025 or thereafter.
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| Revenue from Contract with Customer [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Revenue by Contract Type | The following table presents the Company’s revenue from contracts with customers disaggregated by contract type (in thousands):
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| Schedule of Contract Asset and Liabilities | Contract assets and liabilities consisted of the following (in thousands):
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| Schedule of Accounts Receivable, Net | Accounts receivable, net consisted of the following (in thousands):
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Segment Information (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Segment Reporting | Revenue and gross profit by segment are presented below (in thousands). Revenue amounts presented are revenues with external customers, and intersegment revenues were not material.
Depreciation expense, included in cost of revenue, by segment was as follows (in thousands):
(1)Depreciation expense within selling, general and administrative expense was excluded from the table above as it is not produced or utilized by management to evaluate segment performance. Capital expenditures by segment were as follows (in thousands):
|
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Per Share Information (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Computation of Basic and Diluted Earnings (Loss) Per Share | The amounts used to compute basic and diluted earnings (loss) per share attributable to common stock consisted of the following (in thousands):
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Acquisitions (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Business Combination, Recognized Asset Acquired and Liability Assumed | The estimated value of assets acquired and liabilities assumed as of November 18, 2025 were as follows (in thousands, translated at the acquisition date Canadian Dollar to U.S. Dollar spot rate):
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| Schedule of Major Classes of Intangible Assets | The amounts allocated to major classes of intangible assets were as follows (gross carrying amount in thousands):
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Goodwill and Intangible Assets (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Goodwill | Changes in the carrying amount of goodwill of each of the Company’s reportable segments were as follows (in thousands):
(1)Net of accumulated impairment of $10.8 million as of December 28, 2025, December 29, 2024 and December 31, 2023. (2)Net of accumulated impairment of $391.1 million as of December 28, 2025, December 29, 2024 and December 31, 2023.
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| Schedule of Finite-Lived Intangible Assets | The Company’s definite-lived intangible assets and respective carrying values were as follows (in thousands, except for weighted average amortization periods, which are in years):
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The estimated future aggregate amortization expense of definite-lived intangible assets as of December 28, 2025 is as follows (in thousands):
|
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Property and Equipment (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 28, 2025 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Property and Equipment | Property and equipment consisted of the following (in thousands):
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Accrued Expenses and Other Current Liabilities (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Payables and Accruals [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consisted of the following (in thousands):
|
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Long-Term Debt (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Long-Term Debt | Long-term debt, including outstanding amounts on the Company’s line of credit, consisted of the following (in thousands):
(1)Fair values as of December 28, 2025 and December 29, 2024 were determined using discount rates commensurate with the Company’s credit rating. The table below summarizes the weighted average interest rates on the term loan facility and revolving credit facility as of the end of December 28, 2025 and December 29, 2024:
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| Schedule of Maturities of Long-Term Debt | As of December 28, 2025, future principal payments required to be made on existing debt obligations (excluding finance lease obligations, which are discussed in “Note 13 — Leases”) are set forth in the table below (in thousands):
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Leases (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Lease Expense | The components of lease expense were as follows (in thousands):
(1)Depreciation is included within cost of revenue in the accompanying consolidated statements of operations. (2)Short-term lease cost includes both leases and rentals with initial terms of 12 months or less. Supplemental cash flow information related to leases was as follows (in thousands):
Supplemental information related to leases was as follows:
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| Schedule of Maturities of Finance Lease Liabilities | The following is a schedule of maturities of lease liabilities as of December 28, 2025 (in thousands):
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| Schedule of Maturities of Operating Lease Liabilities | The following is a schedule of maturities of lease liabilities as of December 28, 2025 (in thousands):
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Income Taxes (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Tax Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Loss Before Income Taxes and Provision for Income Taxes | The following is a summary of income (loss) before income taxes (in thousands):
Income tax expense (benefit) consisted of the following (in thousands):
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| Schedule of Reconciliation of Effective Tax Rate | The following is a reconciliation of the federal statutory rate to the consolidated effective tax rate for fiscal year 2025 pursuant to the requirements of ASU 2023-09. which has been applied prospectively:
(1)State taxes in Pennsylvania and Illinois made up the majority (greater than 50%) of the tax expense effect in this category. As previously disclosed for the fiscal years ended December 29, 2024 and December 31, 2023, prior to the adoption of ASU 2023-09, the effective income tax rate differs from the statutory rate as follows:
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| Schedule of Deferred Tax Assets and Liabilities | The significant components of deferred tax assets and liabilities were as follows (in thousands):
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| Schedule of Reconciliation of Valuation Allowance | A reconciliation of the beginning and ending amount of the Company’s valuation allowance is as follows (in thousands):
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| Schedule of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
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Employee Benefits (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Retirement Benefits [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Multiemployer Plan |
(1)Certain collective bargaining agreement(s) participating in this fund is subject to automatic renewal absent cancellation by either party. (2)Multiemployer defined benefit pension plans in Canada are not subject to the reporting requirements under the PPA. Accordingly, certain information is not publicly available. The Company’s contributions to the following individually significant plans were 5% or more of the total contributions to these plans for the periods indicated based on the Forms 5500 for these plans for the plan years ended December 31, 2024 and 2023. Forms 5500 were not yet available for these plans for the plan years ending during 2025, unless specifically noted below.
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Supplemental Cash Flow Disclosures (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Supplemental Disclosure of Cash Flow Information | The following table represents the Company’s supplemental cash flow information related to interest and cash taxes paid (in thousands):
During the fiscal year ended December 28, 2025, income taxes paid (net of refunds) exceeded 5% of total income taxes paid (net of refunds) in the following jurisdictions (in thousands):
Non-cash lease activity is disclosed in “Note 13 — Leases”. The following table represents the Company’s non-cash investing activity (in thousands):
(1)Represents approximately $2.1 million that is expected to be paid within the next year pursuant to working capital and other adjustments, as well as $1.4 million in non-current liabilities which are offset by restricted cash. Following is a reconciliation of the captions in the consolidated balance sheets to the consolidated statements of cash flows (in thousands):
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Related Parties (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transactions [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Concentration Risk | The following table represents the Company’s revenue in dollars and as a percentage of total revenue as well as gross profit in dollars and as a percentage of total gross profit relating to contracts with Southwest Gas Corporation (in thousands):
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Stock-based Compensation (Tables) |
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Dec. 28, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award | The table below summarizes activity related to the Company’s stock-based compensation plans during the fiscal year of 2025. This table excludes RSUs and PSUs of Southwest Gas Holdings stock that were granted to certain employees of the Company prior to the Centuri IPO and fully vested during fiscal year 2025. The fair value of these outstanding Southwest Gas Holdings awards was not material as of December 29, 2024.
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Revenue and Related Balance Sheet Accounts - Revenue by Contract Type (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
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| Disaggregation of Revenue [Line Items] | |||
| Total revenue | $ 2,982,781 | $ 2,637,229 | $ 2,899,276 |
| Unit-price contracts | |||
| Disaggregation of Revenue [Line Items] | |||
| Total revenue | 1,660,990 | 1,508,683 | 1,570,356 |
| Time and materials contracts | |||
| Disaggregation of Revenue [Line Items] | |||
| Total revenue | 692,986 | 589,018 | 655,315 |
| Fixed-price contracts | |||
| Disaggregation of Revenue [Line Items] | |||
| Total revenue | 628,805 | 539,528 | 673,605 |
| Master services agreements | |||
| Disaggregation of Revenue [Line Items] | |||
| Total revenue | 2,326,943 | 2,121,144 | 2,388,688 |
| Bid contracts | |||
| Disaggregation of Revenue [Line Items] | |||
| Total revenue | $ 655,838 | $ 516,085 | $ 510,588 |
Revenue and Related Balance Sheet Accounts - Contract Asset and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Revenue from Contract with Customer [Abstract] | |||
| Current contract assets | $ 395,126 | $ 238,169 | $ 269,808 |
| Non-current contract assets | 30,927 | 23,854 | 214 |
| Contract assets, total | 426,053 | 262,023 | 270,022 |
| Contract liabilities | (50,510) | (24,975) | (43,694) |
| Net contract assets | $ 375,543 | $ 237,048 | $ 226,328 |
Revenue and Related Balance Sheet Accounts - Narrative (Details) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 28, 2025
USD ($)
contract
|
Dec. 29, 2024
USD ($)
|
|
| Disaggregation of Revenue [Line Items] | ||
| Current contract assets included retention balances | $ 40.6 | $ 27.3 |
| Contract with customer revenue recognized related to unapproved change orders and claims | 47.8 | 24.8 |
| Increase in contract asset | 164.0 | |
| Increase in contract liability | 25.5 | |
| Revenue recognized | 21.3 | |
| Performance obligations | 411.4 | |
| Other Noncurrent Assets | ||
| Disaggregation of Revenue [Line Items] | ||
| Contract with customer revenue recognized related to unapproved change orders and claims | $ 19.7 | $ 13.0 |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-12-29 | ||
| Disaggregation of Revenue [Line Items] | ||
| Performance obligation time period | 2 years | |
| Fixed-price contracts | ||
| Disaggregation of Revenue [Line Items] | ||
| Number of contracts greater than one year | contract | 60 | |
Revenue and Related Balance Sheet Accounts - Accounts Receivable, Net (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Revenue from Contract with Customer [Abstract] | ||
| Billed on completed contracts and contracts in progress | $ 312,003 | $ 281,416 |
| Other receivables | 2,699 | 2,727 |
| Accounts receivable, gross | 314,702 | 284,143 |
| Allowance for doubtful accounts | (37) | (2,702) |
| Accounts receivable, net | $ 314,665 | $ 281,441 |
Segment Information - Narrative (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 28, 2025
USD ($)
segment
|
Dec. 29, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Segment Reporting Information [Line Items] | |||
| Number of operating segments | segment | 4 | ||
| Number of reportable segments | segment | 4 | ||
| Total revenue | $ 2,982,781 | $ 2,637,229 | $ 2,899,276 |
| Current assets | 881,375 | 601,384 | |
| CANADA | |||
| Segment Reporting Information [Line Items] | |||
| Total revenue | 246,900 | 197,900 | $ 234,800 |
| Current assets | 85,300 | 56,200 | |
| Long-lived assets | 256,800 | 181,600 | |
| Net assets | $ 139,500 | $ 110,000 | |
| CANADA | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | |||
| Segment Reporting Information [Line Items] | |||
| Concentration risk percentage | 8.00% | 8.00% | 8.00% |
Segment Information - Depreciation by Segment (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | $ 111,512 | $ 108,703 | $ 118,776 |
| Cost of Sales | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | 110,009 | 106,013 | 114,125 |
| Operating Segments | Cost of Sales | U.S. Gas | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | 42,802 | 45,213 | 45,895 |
| Operating Segments | Cost of Sales | Canadian Operations | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | 5,792 | 6,206 | 5,954 |
| Operating Segments | Cost of Sales | Union Electric | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | 29,839 | 27,880 | 35,108 |
| Operating Segments | Cost of Sales | Non-Union Electric | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated depreciation expense | $ 31,576 | $ 26,714 | $ 27,168 |
Segment Information - Capital Expenditure by Segment (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | $ 86,325 | $ 99,333 | $ 106,650 |
| Operating Segments | U.S. Gas | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | 32,441 | 39,659 | 53,916 |
| Operating Segments | Canadian Operations | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | 1,567 | 5,375 | 9,290 |
| Operating Segments | Union Electric | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | 16,964 | 29,706 | 27,765 |
| Operating Segments | Non-Union Electric | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | 34,830 | 24,526 | 9,370 |
| Other | |||
| Segment Reporting Information [Line Items] | |||
| Consolidated capital expenditures | $ 523 | $ 67 | $ 6,309 |
Per Share Information - Computation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Amounts attributable to common stock: | |||
| Net income (loss) attributable to common stock | $ 22,395 | $ (6,724) | $ (186,176) |
| Weighted average shares: | |||
| Weighted average shares outstanding for basic earnings per share attributable to common stock (in shares) | 90,000 | 83,286 | 71,666 |
| Weighted average dilutive securities (in shares) | 295 | 0 | 0 |
| Weighted average shares outstanding for diluted earnings per share attributable to common stock (in shares) | 90,295 | 83,286 | 71,666 |
Accounts Receivable Securitization Facility (Details) - USD ($) $ in Thousands |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 29, 2024 |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] | ||||
| Accounts receivable securitization facility term | 3 years | |||
| AR sold and derecognized | $ 125,000 | $ 125,000 | ||
| Unused capacity | 0 | $ 0 | ||
| Contract assets, total | 426,053 | 262,023 | $ 270,022 | |
| Interest expense | 7,000 | 2,200 | ||
| Special Purpose Entity | ||||
| Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] | ||||
| Accounts receivable | 60,200 | 45,200 | ||
| Contract assets, total | $ 115,600 | $ 78,300 | ||
Equity Method Investments (Details) - WSN Western - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Schedule of Equity Method Investments [Line Items] | |||
| Equity interest, ownership percentage | 50.00% | ||
| Net carrying value | $ 11.5 | $ 10.9 | |
| Maximum exposure to loss | 11.8 | 10.9 | |
| Income recognized | 0.2 | 0.2 | $ 0.5 |
| Proceeds from dividends received | $ 0.2 | $ 0.2 | $ 0.2 |
Acquisitions - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Nov. 18, 2025 |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Asset Acquisition [Line Items] | ||||
| Additional incentive awards term | 3 years | |||
| Goodwill, net | $ 395,671 | $ 368,302 | $ 375,892 | |
| Connect Acquisition | ||||
| Asset Acquisition [Line Items] | ||||
| Total cash consideration | $ 58,000 | |||
| Non-current liabilities | 1,400 | |||
| Goodwill, net | $ 22,527 | |||
| Revenue since acquisition date | 8,700 | |||
| Incurred acquisition-related cost | 2,200 | |||
| Pro forma revenue | $ 3,060,000 | $ 2,690,000 | ||
Acquisitions - Schedule of Asset Acquisitions (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Nov. 18, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|
| Liabilities: | ||||
| Goodwill, net | $ 395,671 | $ 368,302 | $ 375,892 | |
| Connect Acquisition | ||||
| Assets: | ||||
| Cash and cash equivalents | $ 8,919 | |||
| Accounts receivable, net | 14,120 | |||
| Contract assets | 5,033 | |||
| Prepaid expenses and other current assets | 1,937 | |||
| Property and equipment, net | 10,774 | |||
| Intangible assets, net | 28,073 | |||
| Right-of-use assets under finance leases | 1,820 | |||
| Right-of-use assets under operating leases | 574 | |||
| Other assets | 297 | |||
| Total assets acquired | 71,547 | |||
| Liabilities: | ||||
| Accounts payable | 10,020 | |||
| Accrued expenses and other current liabilities | 4,138 | |||
| Contract liabilities | 5,196 | |||
| Long-term debt | 4,666 | |||
| Finance lease liabilities | 1,626 | |||
| Operating lease liabilities | 586 | |||
| Deferred income taxes | 9,813 | |||
| Total liabilities assumed | 36,045 | |||
| Total identifiable net assets | 35,502 | |||
| Goodwill, net | 22,527 | |||
| Fair value of net assets acquired | $ 58,029 |
Acquisitions - Schedule of Intangible Assets (Details) - Connect Acquisition $ in Thousands |
Nov. 18, 2025
USD ($)
|
|---|---|
| Finite-Lived Intangible Assets [Line Items] | |
| Gross Carrying Amount | $ 28,073 |
| Weighted Average Amortization Period in Years | 17 years 3 months 18 days |
| Customer relationships | |
| Finite-Lived Intangible Assets [Line Items] | |
| Gross Carrying Amount | $ 22,871 |
| Trade names and trademarks | |
| Finite-Lived Intangible Assets [Line Items] | |
| Gross Carrying Amount | $ 2,779 |
| Weighted Average Amortization Period in Years | 15 years |
| Backlog | |
| Finite-Lived Intangible Assets [Line Items] | |
| Gross Carrying Amount | $ 2,423 |
| Weighted Average Amortization Period in Years | 9 months 18 days |
| Customer-Related Intangible Assets | |
| Finite-Lived Intangible Assets [Line Items] | |
| Weighted Average Amortization Period in Years | 19 years 3 months 18 days |
Goodwill and Intangible Assets - Narrative (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2023 |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Goodwill [Line Items] | ||||
| Fair value, valuation assumption, expected cash flow, period (in years) | 5 years | |||
| Goodwill impairment | $ 0 | $ 0 | $ 213,992,000 | |
| Amortization of intangible assets | $ 27,281,000 | $ 26,642,000 | $ 26,670,000 | |
| Riggs Distler | ||||
| Goodwill [Line Items] | ||||
| Goodwill impairment | $ 214,000,000.0 | |||
| Measurement Input Terminal Growth Rate Member | ||||
| Goodwill [Line Items] | ||||
| Indefinite-lived intangible asset, measurement input | 3.00% | 3.00% | 3.00% | |
| Measurement Input, Discount Rate | ||||
| Goodwill [Line Items] | ||||
| Indefinite-lived intangible asset, measurement input | 12.50% | 10.00% | 12.50% | |
| Measurement Input, Control Premium | ||||
| Goodwill [Line Items] | ||||
| Indefinite-lived intangible asset, measurement input | 15.00% | 15.00% | 15.00% | |
Goodwill and Intangible Assets - Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted Average Amortization Period | 18 years | 18 years |
| Gross Carrying Amount | $ 499,346 | $ 468,873 |
| Accumulated Amortization | (156,103) | (127,972) |
| Total | $ 343,243 | $ 340,901 |
| Customer relationships | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted Average Amortization Period | 19 years | 19 years |
| Gross Carrying Amount | $ 414,808 | $ 389,918 |
| Accumulated Amortization | (127,463) | (105,218) |
| Total | $ 287,345 | $ 284,700 |
| Trade names and trademarks | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted Average Amortization Period | 15 years | 15 years |
| Gross Carrying Amount | $ 82,057 | $ 78,955 |
| Accumulated Amortization | (28,227) | (22,754) |
| Total | $ 53,830 | $ 56,201 |
| Backlog | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Weighted Average Amortization Period | 9 months 18 days | |
| Gross Carrying Amount | $ 2,481 | |
| Accumulated Amortization | (413) | |
| Total | $ 2,068 |
Goodwill and Intangible Assets - Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| 2026 | $ 29,942 | |
| 2027 | 27,510 | |
| 2028 | 27,193 | |
| 2029 | 27,193 | |
| 2030 | 26,834 | |
| Thereafter | 204,571 | |
| Total | $ 343,243 | $ 340,901 |
Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued compensation | $ 90,569 | $ 77,259 |
| Other accrued expenses | 56,881 | 53,205 |
| Accrued insurance | 18,135 | 27,957 |
| Book overdrafts | 19,379 | 15,163 |
| Accrued expenses and other current liabilities | $ 184,964 | $ 173,584 |
Long-Term Debt - Weighted Average Interest Rates (Details) - Line of Credit |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Secured Debt | Secured Term Loan Facility | ||
| Debt Instrument [Line Items] | ||
| Weighted average interest rate | 6.12% | 7.19% |
| Revolving Credit Facility | Secured Revolving Credit Facility | ||
| Debt Instrument [Line Items] | ||
| Weighted average interest rate | 4.54% | 5.94% |
Long-Term Debt - Schedule of Maturities (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Debt Disclosure [Abstract] | ||
| 2026 | $ 29,543 | |
| 2027 | 9,186 | |
| 2028 | 1,079 | |
| 2029 | 637 | |
| 2030 | 91,612 | |
| Thereafter | 616,361 | |
| Total | $ 748,418 | $ 885,702 |
Leases - Lease Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Leases [Abstract] | |||
| Operating lease cost | $ 28,842 | $ 26,565 | $ 22,162 |
| Finance lease cost: | |||
| Amortization of ROU assets | 5,570 | 7,831 | 7,780 |
| Interest on lease liabilities | 924 | 1,312 | 1,680 |
| Total finance lease cost | 6,494 | 9,143 | 9,460 |
| Short-term lease cost | 124,802 | 103,465 | 122,333 |
| Total lease cost | $ 160,138 | $ 139,173 | $ 153,955 |
Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Cash paid for amounts included in the measurement of lease liabilities: | |||
| Operating cash flows from operating leases | $ 27,847 | $ 26,451 | $ 21,908 |
| Operating cash flows from finance leases | 924 | 1,312 | 1,680 |
| Financing cash flows from finance leases | 9,418 | 11,293 | 12,113 |
| Right-of-use assets obtained in exchange for lease obligations: | |||
| Operating leases | 94,167 | 9,345 | 50,173 |
| Finance leases | $ 70 | $ 124 | $ 1,625 |
Leases - Supplemental Information Related to Leases (Details) |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Weighted average remaining lease term (in years): | ||
| Operating leases | 6 years 2 months 1 day | 6 years 8 months 19 days |
| Finance leases | 2 years 6 months 7 days | 2 years 11 months 26 days |
| Weighted average discount rate: | ||
| Operating leases | 5.74% | 5.05% |
| Finance leases | 4.98% | 4.27% |
Leases - Lease Maturities (Details) $ in Thousands |
Dec. 28, 2025
USD ($)
|
|---|---|
| Operating Leases | |
| 2026 | $ 39,971 |
| 2027 | 38,556 |
| 2028 | 35,008 |
| 2029 | 31,087 |
| 2030 | 28,474 |
| Thereafter | 45,174 |
| Total lease payments | 218,270 |
| Less: Amount of lease payments representing interest | (34,385) |
| Total | 183,885 |
| Finance Leases | |
| 2026 | 8,098 |
| 2027 | 6,200 |
| 2028 | 2,217 |
| 2029 | 826 |
| 2030 | 404 |
| Thereafter | 0 |
| Total lease payments | 17,745 |
| Less: Amount of lease payments representing interest | (1,136) |
| Total | $ 16,609 |
Income Taxes - Narrative (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Operating Loss Carryforwards [Line Items] | ||
| Net operating losses | $ 84,499 | $ 17,937 |
| Deferred tax assets, net | 174,100 | $ 113,946 |
| Estimated witholding | 8,100 | |
| Domestic Tax Jurisdiction | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss carryforwards | 301,100 | |
| Non-US | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss carryforwards | 14,700 | |
| State and Local Jurisdiction | ||
| Operating Loss Carryforwards [Line Items] | ||
| Operating loss carryforwards | 260,200 | |
| Southwest Gas Holdings | ||
| Operating Loss Carryforwards [Line Items] | ||
| Net operating losses | 55,400 | |
| Deferred tax assets, net | $ 23,700 |
Income Taxes - Loss Before Income Taxes and Noncontrolling Interests (Benefit) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Income Tax Disclosure [Abstract] | |||
| Domestic | $ (17,670) | $ (20,479) | $ (195,505) |
| Foreign | 32,257 | 17,123 | 20,529 |
| Income (loss) before income taxes | $ 14,587 | $ (3,356) | $ (174,976) |
Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Current income tax expense: | |||
| Federal | $ 3,681 | $ 12,155 | $ 6,057 |
| State | 3,677 | 2,338 | 6,579 |
| Foreign | (823) | 8,141 | 6,566 |
| Total current income tax expense | 6,535 | 22,634 | 19,202 |
| Deferred income tax (benefit) expense: | |||
| Federal | (21,731) | (12,752) | (4,204) |
| State | (2,252) | (2,801) | (4,375) |
| Foreign | 9,385 | (3,615) | (1,093) |
| Total deferred income tax benefit | (14,598) | (19,168) | (9,672) |
| Income tax (benefit) expense | $ (8,063) | $ 3,466 | $ 9,530 |
Income Taxes - Reconciliation of Effective Tax Rate (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Income Tax Disclosure [Abstract] | |||
| Federal statutory income tax rate | 21.00% | 21.00% | 21.00% |
| Increases (decreases) resulting from: | |||
| State income tax, net | 7.80% | 13.30% | (0.60%) |
| Goodwill impairment | 0.00% | (23.40%) | |
| Company-owned life insurance | 18.00% | 0.40% | |
| Separation related costs | (16.30%) | 0.00% | |
| Meals and entertainment expenses | 26.20% | (86.50%) | (1.90%) |
| Executive compensation limitations | 6.40% | (30.20%) | 0.00% |
| Return to provision | 1.90% | 12.60% | (0.60%) |
| State rate impact of asset transfers | (10.40%) | 0.00% | |
| Tax credits | 10.40% | 0.40% | |
| Penalties | (3.20%) | (0.10%) | |
| Stock-based compensation | 1.20% | (1.90%) | 0.00% |
| Uncertain tax positions | (3.50%) | (1.10%) | 0.00% |
| Other | 0.30% | (0.90%) | 0.00% |
| Consolidated effective income tax rate | (55.30%) | (103.30%) | (5.40%) |
Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
|---|---|---|
| Deferred tax assets: | ||
| Accrued expenses not currently deductible for tax | $ 41,174 | $ 36,693 |
| Operating lease obligations | 47,919 | 27,239 |
| Net operating losses | 84,499 | 17,937 |
| Interest expense carryforward | 0 | 30,483 |
| Other | 1,332 | 2,136 |
| Deferred tax assets | 174,924 | 114,488 |
| Less: valuation allowance | (824) | (542) |
| Deferred tax assets, net | 174,100 | 113,946 |
| Deferred tax liabilities: | ||
| Depreciation of property and equipment | 106,677 | 113,385 |
| Right-of-use assets | 45,812 | 25,453 |
| Goodwill and intangible assets | 91,807 | 83,097 |
| Canadian contract assets, net | 8,169 | 7,125 |
| Deferred tax liabilities | 252,465 | 229,060 |
| Net deferred tax liabilities | $ 78,365 | $ 115,114 |
Income Taxes - Reconciliation of Valuation Allowance (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Valuation allowances at beginning of the year | $ 542 | $ 1,986 | $ 1,885 |
| Additions (charged to expense) | 270 | 187 | 0 |
| Changes due to change in rates | 12 | 25 | 101 |
| Write-offs | 0 | (1,656) | 0 |
| Valuation allowances at end of year | $ 824 | $ 542 | $ 1,986 |
Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Unrecognized Tax Benefits [Roll Forward] | |||
| Unrecognized tax benefits at beginning of year | $ 510 | $ 472 | $ 427 |
| Gross increases – tax positions in prior period | 0 | 38 | 45 |
| Gross decreases – tax positions in prior period | (510) | 0 | 0 |
| Unrecognized tax benefits at end of year | $ 0 | $ 510 | $ 472 |
Employee Benefits - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Retirement Benefits [Abstract] | |||
| Defined contribution plan | $ 16.2 | $ 15.6 | $ 15.2 |
| Deferred compensation plan, percent of base salary | 80.00% | ||
| Deferred compensation plan, employer matching contribution | 100.00% | ||
| Deferred compensation plan, employer matching contribution percent | 5.00% | ||
| Deferred compensation plan, contribution percent | 1 | ||
| Deferred compensation liability | $ 33.1 | 32.0 | |
| Deferred compensation plan assets | $ 34.6 | $ 35.6 | |
Supplemental Cash Flow Disclosures - Schedule of Income Taxes Paid (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Supplemental disclosure of cash flow information: | |||
| Interest paid | $ 67,009 | $ 78,265 | $ 98,342 |
| Cash paid for income taxes, net of refunds | |||
| U.S. Federal | 0 | ||
| U.S. State and local | 3,103 | ||
| Foreign | 477 | ||
| Total cash paid for income taxes, net of refunds | 3,580 | $ 9,358 | $ 13,595 |
| Pennsylvania | |||
| Cash paid for income taxes, net of refunds | |||
| U.S. State and local | 994 | ||
| Louisiana | |||
| Cash paid for income taxes, net of refunds | |||
| U.S. State and local | 493 | ||
| Georgia | |||
| Cash paid for income taxes, net of refunds | |||
| U.S. State and local | 361 | ||
| Virginia | |||
| Cash paid for income taxes, net of refunds | |||
| U.S. State and local | 206 | ||
| Oklahoma | |||
| Cash paid for income taxes, net of refunds | |||
| U.S. State and local | $ 202 | ||
Supplemental Cash Flow Disclosures - Schedule of Non-Cash Investing Activity (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Nov. 18, 2025 |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Non-cash investing activities: | ||||
| Accrued capital expenditures | $ 6,093 | $ 12,490 | $ 15,095 | |
| Proceeds from sale of property and equipment in accounts receivable | 20 | 213 | 0 | |
| Accrued acquisition consideration | $ 3,481 | $ 0 | $ 0 | |
| Connect Acquisition | ||||
| Non-cash investing activities: | ||||
| Amount expected to be paid | $ 2,100 | |||
| Non-current liabilities | $ 1,400 | |||
Supplemental Cash Flow Disclosures - Schedule of Statements (Details) - USD ($) $ in Thousands |
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
Jan. 01, 2023 |
|---|---|---|---|---|
| Consolidated balance sheets: | ||||
| Cash and cash equivalents | $ 126,630 | $ 49,019 | $ 33,407 | |
| Restricted cash included in other assets | 1,429 | 0 | 0 | |
| Cash, cash equivalents, and restricted cash in the consolidated statements of cash flows | $ 128,059 | $ 49,019 | $ 33,407 | $ 63,966 |
Related Parties - Concentration Risk (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 28, 2025 |
Dec. 29, 2024 |
Dec. 31, 2023 |
|
| Related Party Transaction [Line Items] | |||
| Total revenue | $ 2,982,781 | $ 2,637,229 | $ 2,899,276 |
| Gross profit | 246,566 | 220,672 | 273,442 |
| Related Party | |||
| Related Party Transaction [Line Items] | |||
| Total revenue | 97,588 | 106,835 | 116,431 |
| Gross profit | $ 6,617 | $ 10,022 | $ 11,017 |
| Related Party | Southwest Gas Corporation | Revenue from Contract with Customer Benchmark | Customer Concentration Risk | |||
| Related Party Transaction [Line Items] | |||
| Concentration risk percentage | 3.00% | 4.00% | 4.00% |
| Related Party | Southwest Gas Corporation | Gross Profit Benchmark | Customer Concentration Risk | |||
| Related Party Transaction [Line Items] | |||
| Concentration risk percentage | 3.00% | 5.00% | 4.00% |
| Chief Executive Officer and Member of Board | |||
| Related Party Transaction [Line Items] | |||
| Total revenue | $ 143,700 | ||
Commitments and Contingencies (Details) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 28, 2025
USD ($)
bankingInstitution
|
Dec. 29, 2024
USD ($)
|
|
| Other Commitments [Line Items] | ||
| Number of financial banking institutions | bankingInstitution | 2 | |
| Performance and Payment Bond | ||
| Other Commitments [Line Items] | ||
| Outstanding performance and payment bonds | $ 822.8 | |
| Cost to complete bonded projects | 385.9 | |
| Non-Union Electric Segment Customer | Customer Concentration Risk | Accounts Receivable and Contract Assets Benchmark | ||
| Other Commitments [Line Items] | ||
| Combined accounts receivable and contract assets | $ 131.9 | $ 52.5 |
| Concentration risk percentage | 19.00% | 10.00% |
Stock-based Compensation - Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award (Details) |
12 Months Ended |
|---|---|
|
Dec. 28, 2025
$ / shares
shares
| |
| RSUs | |
| Shares | |
| Beginning balance (in shares) | 342,679 |
| Granted (in shares) | 736,975 |
| Vested (in shares) | (160,830) |
| Forfeited (in shares) | (54,437) |
| Ending balance (in shares) | 864,387 |
| Weighted Average Grant Date Fair Value (Per Unit) | |
| Beginning balance (in USD per share) | $ / shares | $ 20.40 |
| Granted (in USD per share) | $ / shares | 18.05 |
| Vested (in USD per share) | $ / shares | 24.33 |
| Forfeited (in USD per share) | $ / shares | 17.15 |
| Ending balance (in USD per share) | $ / shares | $ 17.87 |
| PSUs | |
| Shares | |
| Beginning balance (in shares) | 0 |
| Granted (in shares) | 118,612 |
| Vested (in shares) | 0 |
| Forfeited (in shares) | (8,320) |
| Ending balance (in shares) | 110,292 |
| Weighted Average Grant Date Fair Value (Per Unit) | |
| Granted (in USD per share) | $ / shares | $ 17.73 |
| Forfeited (in USD per share) | $ / shares | 18.10 |
| Ending balance (in USD per share) | $ / shares | $ 17.71 |