Dorman Products (DORM) 10-K 28 Feb 23 2022 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 23, 2023	Jun. 25, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	0-18914
Entity Registrant Name	DORMAN PRODUCTS, INC.
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-2078856
Entity Address, Address Line One	3400 East Walnut Street
Entity Address, City or Town	Colmar
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18915
City Area Code	215
Local Phone Number	997-1800
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	DORM
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,967,865,518
Entity Common Stock, Shares Outstanding		31,445,738
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Certain portions of the registrant's definitive proxy statement, in connection with its 2023 Annual Meeting of Shareholders, to be filed with the Securities and Exchange Commission within 120 days after December 31, 2022, are incorporated by reference into PART III of this Annual Report on Form 10-K.
Entity Central Index Key	0000868780
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2022
Auditor Information [Abstract]
Auditor Firm ID	185
Auditor Name	KPMG LLP
Auditor Location	Philadelphia, Pennsylvania

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Income Statement [Abstract]
Net sales	$ 1,733,749	$ 1,345,249	$ 1,092,748
Cost of goods sold	1,169,299	882,333	709,632
Gross profit	564,450	462,916	383,116
Selling, general and administrative expenses	393,402	291,365	249,743
Income from operations	171,048	171,551	133,373
Interest expense, net	15,582	2,162	599
Other income, net	(735)	(377)	(2,962)
Income before income taxes	156,201	169,766	135,736
Provision for income taxes	34,652	38,234	28,866
Net income	121,549	131,532	106,870
Other comprehensive income:
Change in foreign currency translation adjustment	(1,863)	(1,440)	0
Comprehensive Income	$ 119,686	$ 130,092	$ 106,870
Earnings per share:
Basic (dollars per share)	$ 3.87	$ 4.13	$ 3.31
Diluted (dollars per share)	$ 3.85	$ 4.12	$ 3.30
Weighted average shares outstanding:
Basic (in shares)	31,434	31,810	32,280
Diluted (in shares)	31,543	31,961	32,373

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Current assets:
Cash and cash equivalents	$ 46,034	$ 58,782
Accounts receivable, less allowance for doubtful accounts of $1,363 and $1,326	427,385	472,764
Inventories	755,901	531,988
Prepaids and other current assets	39,800	13,048
Total current assets	1,269,120	1,076,582
Property, plant and equipment, net	148,477	114,864
Operating lease right-of-use assets	109,977	59,029
Goodwill	443,035	197,332
Intangible assets, net	322,409	178,809
Other assets	48,768	46,503
Total assets	2,341,786	1,673,119
Current liabilities:
Accounts payable	179,819	177,389
Accrued compensation	19,490	26,636
Accrued customer rebates and returns	192,116	188,080
Revolving credit facility	239,363	239,360
Current portion of long-term debt	12,500	0
Other accrued liabilities	35,007	33,583
Total current liabilities	678,295	665,048
Long-term debt	482,464	0
Long-term operating lease liabilities	98,221	52,443
Other long-term liabilities	28,349	4,916
Deferred tax liabilities, net	11,826	17,976
Commitments and contingencies (Note 10)
Shareholders' equity:
Common stock, par value $0.01; authorized 50,000,000 shares; issued and outstanding 31,430,632 and 31,607,509 shares in 2022 and 2021, respectively	314	316
Additional paid-in capital	88,750	77,451
Retained earnings	956,870	856,409
Accumulated other comprehensive loss	(3,303)	(1,440)
Total shareholders' equity	1,042,631	932,736
Total liabilities and shareholders' equity	$ 2,341,786	$ 1,673,119

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,363	$ 1,326
Common stock, par value (dollars per share)	$ 10	$ 10
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	31,430,632	31,607,509
Common stock, shares outstanding (in shares)	31,430,632	31,607,509

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 28, 2019		32,556,263
Beginning balance at Dec. 28, 2019	$ 773,584	$ 326	$ 52,605	$ 720,653
Exercise of stock options (in shares)		27,787
Exercise of stock options	1,184		1,184
Compensation expense under incentive stock plan	7,586		7,586
Purchase and cancellation of common stock (in shares)		(462,635)
Purchase and cancellation of common stock	(38,676)	$ (5)	(833)	(37,838)
Issuance of non-vested stock, net of cancellations (in shares)		53,572
Issuance of non-vested stock, net of cancellations	3,463	$ 1	3,462
Other stock related activity, net of tax (in shares)		(6,247)
Other stock-related activity, net of tax	(452)		81	(533)
Net income	106,870			106,870
Ending balance at Dec. 26, 2020	853,559	$ 322	64,085	789,152	$ 0
Ending balance (in shares) at Dec. 26, 2020		32,168,740
Exercise of stock options (in shares)		41,700
Exercise of stock options	2,455		2,455
Compensation expense under incentive stock plan	8,228		8,228
Purchase and cancellation of common stock (in shares)		(617,080)
Purchase and cancellation of common stock	(62,756)	$ (6)	(1,111)	(61,639)
Issuance of non-vested stock, net of cancellations (in shares)		28,914
Issuance of non-vested stock, net of cancellations	3,261		3,261
Other stock related activity, net of tax (in shares)		(14,765)
Other stock-related activity, net of tax	(2,103)		533	(2,636)
Other comprehensive loss	(1,440)				(1,440)
Net income	131,532			131,532
Ending balance at Dec. 25, 2021	$ 932,736	$ 316	77,451	856,409	(1,440)
Ending balance (in shares) at Dec. 25, 2021	31,607,509	31,607,509
Exercise of stock options (in shares)		18,515
Exercise of stock options	$ 1,046		1,046
Compensation expense under incentive stock plan	9,370		9,370
Purchase and cancellation of common stock (in shares)		(203,765)
Purchase and cancellation of common stock	(19,934)	$ (2)	(367)	(19,565)
Issuance of non-vested stock, net of cancellations (in shares)		27,224
Issuance of non-vested stock, net of cancellations	2,032		2,032
Other stock related activity, net of tax (in shares)		(18,851)
Other stock-related activity, net of tax	(2,305)		(782)	(1,523)
Other comprehensive loss	(1,863)				(1,863)
Net income	121,549			121,549
Ending balance at Dec. 31, 2022	$ 1,042,631	$ 314	$ 88,750	$ 956,870	$ (3,303)
Ending balance (in shares) at Dec. 31, 2022	31,430,632	31,430,632

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Cash Flows from Operating Activities:
Net income	$ 121,549	$ 131,532	$ 106,870
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion	44,677	35,193	32,307
Gain on equity method investment	0	0	(2,498)
Provision for doubtful accounts	86	181	316
Benefit from deferred income taxes	(5,880)	(11,970)	(9,599)
Provision for stock-based compensation	9,370	8,228	7,586
Payment of contingent consideration	(120)	(2,418)	0
Changes in assets and liabilities:
Accounts receivable	48,479	10,918	(67,369)
Inventories	(133,790)	(153,823)	(12,334)
Prepaids and other current assets	(11,150)	(2,680)	5,353
Other assets	(28)	(5,004)	(3,975)
Accounts payable	(5,542)	47,000	25,251
Accrued customer rebates and returns	2,433	31,275	49,849
Accrued compensation and other liabilities	(28,396)	11,906	20,209
Cash provided by operating activities	41,688	100,338	151,966
Cash Flows from Investing Activities:
Acquisitions, net of cash acquired	(488,956)	(345,483)	(14,808)
Property, plant and equipment additions	(37,883)	(19,840)	(15,450)
Cash used in investing activities	(526,839)	(365,323)	(30,258)
Cash Flows from Financing Activities:
Proceeds of revolving credit line	10,000	252,360	99,000
Payments of revolving credit line	(10,000)	(13,000)	(99,000)
Proceeds of long-term debt	500,000	0	0
Payments of long-term debt	(3,125)	0	0
Payment of contingent consideration	(1,705)	(7,982)	0
Payment of debt issuance costs	(3,918)	(4,215)	0
Proceeds from exercise of stock options	1,046	2,455	1,184
Purchase and cancellation of common stock	(19,934)	(62,649)	(38,676)
Other stock-related activity	132	1,266	3,007
Cash provided by (used in) financing activities	472,496	168,235	(34,485)
Effect of exchange rate changes on Cash and Cash Equivalents	(93)	(44)	0
Net (Decrease) Increase in Cash and Cash Equivalents	(12,748)	(96,794)	87,223
Cash and Cash Equivalents, Beginning of Period	58,782	155,576	68,353
Cash and Cash Equivalents, End of Period	46,034	58,782	155,576
Supplemental Cash Flow Information
Cash paid for interest expense	11,647	1,782	753
Cash paid for income taxes	$ 62,861	$ 46,225	$ 28,341

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Dorman Products, Inc. ("Dorman", the "Company", “we”, “us”, or “our”) is a supplier of replacement and upgrade parts in the motor vehicle aftermarket industry, serving passenger cars, light-, medium-, and heavy-duty trucks as well as specialty vehicles, including utility terrain vehicles (UTVs) and all-terrain vehicles (ATVs). Prior to October 4, 2022, we operated on a 52-53-week period ending on the last Saturday of the calendar year. Our 2022 fiscal year under this schedule is a 53-week period that ended on December 31, 2022 (“fiscal 2022”). Effective October 4, 2022, our Board of Directors approved a change in Dorman’s fiscal year end from the last Saturday in December of each year to December 31 of each year. This change will result in future years ending on December 31, consistent with fiscal 2022. Our fiscal 2021 and fiscal 2020 were 52-week periods that ended on December 25, 2021 (“fiscal 2021”) and December 26, 2020 (“fiscal 2020”). Principles of Consolidation . The Consolidated Financial Statements include our accounts and the accounts of our wholly owned subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates in the Preparation of Financial Statements . The preparation of financial statements in accordance with accounting principles generally accepted in the United States (“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 revenues and expenses during the reporting period. Actual results could differ from those estimates. Cash and Cash Equivalents . We consider all highly liquid short-term investments with original maturities of three months or less to be cash equivalents. Sales of Accounts Receivable . We have entered into several customer-sponsored programs administered by unrelated financial institutions that permit us to sell certain accounts receivable at discounted rates to the financial institutions. Transactions under these programs were accounted for as sales of accounts receivable and were removed from our Consolidated Balance Sheet at the time of the sales transactions. During fiscal 2022, fiscal 2021 and fiscal 2020, we sold $1,048.7 million, $935.8 million and $740.0 million, respectively, under these programs. Selling, general and administrative expenses include factoring costs associated with these accounts receivable sales programs of $37.2 million, $11.7 million and $13.2 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. Factoring costs are impacted both by interest rates and the timing of when accounts receivable are sold in comparison to the original due dates of those accounts receivable. Inventories . Inventories are stated at the lower of cost or net realizable value. Cost is determined by the first-in, first-out method. Inventories include the cost of material, freight, direct labor and overhead utilized in the processing of our products. We provide reserves for discontinued and excess inventory based upon historical demand, forecasted usage, estimated customer requirements and product line updates. Property, Plant and Equipment . Property, plant and equipment are recorded at cost and depreciated over the estimated useful lives, which range from 1 to 39 years, using the straight-line method for financial statement reporting purposes and accelerated methods for income tax purposes. The costs of maintenance and repairs are expensed as incurred. Renewals and betterments are capitalized. Gains and losses on disposals are included in operating results. Estimated useful lives by major asset category are as follows: Buildings and building improvements 10 to 39 years Machinery, equipment and tooling 3 to 10 years Software and computer equipment 3 to 10 years Furniture, fixtures and leasehold improvements 1 to 39 years Long-Lived Assets Including Goodwill and Other Acquired Intangible Assets . Long-lived assets, including property, plant, and equipment and amortizable identifiable intangibles, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. The impairment review is a two-step process. First, recoverability is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount exceeds the estimated undiscounted future cash flows, the second step of the impairment test is performed, and an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds its fair value. The assets and liabilities of a disposal group classified as held for sale would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated. Goodwill is reviewed for impairment on an annual basis or whenever events or changes in circumstances indicate the carrying value of the goodwill may be impaired. For the annual test, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount (“Step 0”). If through the Step 0 test we determine it is more likely than not that the fair value of a reporting unit is less than its carrying amount, then we would perform a quantitative test (“Step 1”) to determine whether an impairment charge was necessary. During fiscal 2022 and fiscal 2021, we assessed the qualitative factors which could affect the fair values of our reporting units and determined that it was not more likely than not that the fair value of our reporting units were less than their carrying amounts. Purchase Accounting . The purchase price of an acquired business is allocated to the underlying tangible and intangible assets acquired and liabilities assumed based upon their respective fair market values, with the excess recorded as goodwill. Such fair market value assessments require judgments and estimates which may change over time and may cause the final amounts to differ materially from their original estimates. These adjustments to fair value assessments are recorded to goodwill over the purchase price allocation period which cannot exceed 12 months from the date of acquisition. Other Assets . Other assets include primarily long-term core inventory, deposits, and equity method investments. Certain products we sell contain parts that can be recycled, or as more commonly referred to in our industry, remanufactured. We refer to these parts as cores. A used core is remanufactured and sold to the customer as a replacement for a unit inside a vehicle. Customers and end-users that purchase remanufactured products will generally return the used core to us, which we then use in the remanufacturing process to make another finished good. Our core inventory consists of used cores purchased and held in our facilities, used cores that are in the process of being returned from our customers and end-users, and remanufactured cores held in finished goods inventory at our facilities. Our products that utilize a core primarily include instrument clusters, hybrid batteries, radios, and climate control modules. Long-term core inventory was $19.8 million and $20.8 million as of December 31, 2022 and December 25, 2021, respectively. Long-term core inventory is recorded at the lower of cost or net realizable value. Cost is determined based on actual purchases of core inventory. We believe that the most appropriate classification of core inventory is a long-term asset. According to guidance provided under the Financial Accounting Standards Board Accounting Standards Codification, current assets are defined as “assets or resources commonly identified as those which are reasonably expected to be realized in cash or sold or consumed during the normal operating cycle of the business.” The determination of the long-term classification is based on our view that the value of the cores is not expected to be consumed or realized in cash during our normal annual operating cycle. We have investments that we account for according to the equity method of accounting. The total book value of these investments was $9.4 million at both of December 31, 2022 and December 25, 2021, respectively. These investments provided $5.5 million, $4.6 million and $1.3 million of income during fiscal 2022, fiscal 2021, and fiscal 2020, respectively. In January 2020, we acquired the remaining 60% of the outstanding stock of Power Train Industries, Inc. (“PTI”), a privately-held supplier of parts to the automotive aftermarket, based in Reno, Nevada of which we held equity investments with a fair value of $12.3 million. Additionally, we have an investment that we account for according to the cost method of accounting. The carrying book value of this investment was $5.0 million as of both December 31, 2022 and December 25, 2021. Other Accrued Liabilities. Other accrued liabilities include primarily accrued commissions, accrued income taxes, insurance liabilities, and other current liabilities. Revenue Recognition and Accrued Customer Rebates and Returns . Revenue is recognized from product sales when goods are shipped, title and risk of loss and control have been transferred to the customer and collection is reasonably assured. We record estimates for cash discounts, defective and slow-moving product returns, promotional rebates, core return deposits, and other discounts in the period of the sale ("Customer Credits"). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are shown as an increase of accrued customer rebates and returns, which is included in current liabilities. Customer Credits are estimated based on contractual provisions, historical experience, and our assessment of current market conditions. Actual Customer Credits have not differed materially from estimated amounts. Amounts billed to customers for shipping and handling are included in net sales. Costs associated with shipping and handling are included in cost of goods sold. As noted above, Customer Credits include core return deposits which are an estimate of the amount we believe we will refund to our customers when used cores are returned to us. The price we invoice to customers for remanufactured cores contains both the amount we charge to remanufacture the part and a deposit for the core. We charge a core deposit to encourage the customer to return the used core to us so that it can be used in our remanufacturing process. We allow our customers up to twenty-four months to return the used core to us. Core return deposits are reserved based on the expected deposits to be issued to customers based on historical returns. Research and Development . Research and development costs are expensed as incurred. Research and development costs totaling $24.8 million, $23.1 million and $20.7 million have been recorded in selling, general and administrative expenses in the Consolidated Statements of Operations for fiscal 2022, fiscal 2021, and fiscal 2020, respectively. Stock-Based Compensation . At December 31, 2022 and December 25, 2021, we had awards outstanding under two stock-based employee compensation plans, which are described more fully in Note 12, Capital Stock. We record compensation expense for all awards granted. The value of restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) issued was based on the fair value of our common stock on the grant date. For performance-based RSAs tied to growth in adjusted pre-tax income, compensation costs related to the stock is recognized over the performance period and is calculated using the closing price per share of our common stock on the grant date and an estimate of the probable outcome of the performance conditions as of the reporting date. The fair value of performance-based RSUs, for which the performance measure is total shareholder return, is determined using a Monte Carlo simulation model. The fair value of stock options granted is determined using the Black-Scholes option valuation model on the grant date. Income Taxes . We follow the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities. Deferred tax assets or liabilities at the end of each period are determined using the enacted tax rate expected to be in effect when taxes are paid or recovered. Unrecognized income tax benefits represent income tax positions taken on income tax returns that have not been recognized in the consolidated financial statements. The Company recognizes the benefit of an income tax position only if it is more likely than not (greater than 50%) that the tax position will be sustained upon tax examination, based solely on the technical merits of the tax position. Otherwise, no benefit is recognized. The tax benefits recognized are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. Additionally, we accrue interest and related penalties, if applicable, on all tax exposures for which reserves have been established consistent with jurisdictional tax laws. Interest and penalties are classified as income tax expense in the Consolidated Statements of Operations. Concentrations of Risk . Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and accounts receivable. All cash equivalents are managed within established guidelines that limit the amount that may be invested with one issuer. A significant percentage of our accounts receivable have been, and will continue to be, concentrated among a relatively small number of automotive retailers and warehouse distributors in the United States. Our 4 largest customers accounted for 69% and 71% of net accounts receivable as of December 31, 2022 and December 25, 2021, respectively. We continually monitor the credit terms and credit limits for these and other customers. In fiscal 2022 and fiscal 2021, approximately 64% and 74%, respectively, of our products were purchased from suppliers located in a variety of foreign countries, with the largest portion coming from China. Fair Value Disclosures . The carrying value of financial instruments such as cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate their fair value based on the short-term nature of these instruments. The carrying value of our long-term debt approximates its fair value because it bears interest at a rate indexed to a market rate (Term SOFR). Additionally, the fair value of assets acquired and liabilities assumed are determined at the date of acquisition. Contingent consideration associated with an acquisition is recorded at fair value at the acquisition date and is adjusted to fair value at each reporting period.

Business Acquisitions and Inves

Business Acquisitions and Investments	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Business Acquisitions and Investments	Business Acquisitions and Investments Super ATV, LLC (“SuperATV”) On October 4, 2022 (the “Closing Date”), Dorman acquired 100% of the issued and outstanding equity interests of SuperATV (the “Transaction”), for aggregate consideration of $509.6 million (net of $6.8 million cash acquired), subject to certain customary adjustments based on, among other things, the amount of cash, debt and working capital in the business of SuperATV as of the closing of the Transaction, plus a potential earn-out payment to the sellers of SuperATV not to exceed $100 million in the aggregate, which remains subject to the achievement by SuperATV of certain revenue and gross margin targets in the years ended December 31, 2023 and December 31, 2024. SuperATV is a leading independent supplier to the powersports aftermarket with a family of highly respected brands spanning functional accessories and upgrades, as well as replacement parts for specialty vehicles. The Transaction was funded in cash through the refinancing of our existing credit facility discussed further in Note 7. The Transaction was accounted for as a business combination under the acquisition method of accounting. We have allocated the purchase price to tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. The allocation of the purchase price to the assets acquired and liabilities assumed, including the residual amount allocated to goodwill, as of December 31, 2022, is based upon preliminary information and is subject to change within the permitted measurement period (up to one year from the acquisition date) as additional information concerning final asset and liability valuations is obtained. The fair values that remain preliminary include tax-related liabilities and contingent liabilities. While they are not expected to be materially different than those shown, any material adjustments to the estimates based upon new information identified during the measurement period will be reflected, retroactively, as of the date of the acquisition. The table below details the fair values of the assets acquired and the liabilities assumed at the acquisition date: (in thousands) Accounts receivable $ 3,317 Inventories 90,428 Prepaids and other current assets 5,293 Property, plant and equipment 23,776 Goodwill 247,247 Identifiable intangible assets 157,500 Operating lease right-of-use assets 11,661 Other Assets 3,001 Accounts payable (7,436) Accrued compensation (2,086) Accrued customer rebates and returns (1,609) Other current liabilities (8,726) Long-term operating lease liabilities (9,508) Other long-term liabilities (3,307) Net cash consideration 509,551 The estimated valuation of the intangible assets acquired, and related amortization periods are as follows: (in thousands) Fair Value Amortization Period (in years) Product portfolio 82,500 15 Trade names 48,400 20 Customer relationships 26,600 15 Total $ 157,500 The fair values assigned to the product portfolio and customer relationships were estimated by discounting expected cash flows based on the multi-period excess earnings valuation methodology, and the trade names were estimated by discounting expected cash flows based on the relief from royalty methodology. The product portfolio valuation method relies on various management judgments, including expected future cash flows resulting from the product portfolio, technology obsolescence rates, contributory effects of other assets utilized in the business, discount rates and other factors. The trade names valuation method relies on various management judgments, including royalty rates, discount rates and other factors. The customer relationship valuation method relies on various management judgments, including expected future cash flows resulting from existing customer relationships, customer attrition rates, contributory effects of other assets utilized in the business, discount rates, and other factors. As of December 31, 2022, the total amount of goodwill resulting from the SuperATV acquisition that is expected to be deductible for tax purposes is estimated at $420.3 million. The financial results of the Transaction have been included in the consolidated financial statements since the date of acquisition. The net sales and net income of SuperATV included in the consolidated financial statements for the fiscal year ended December 31, 2022 were $49.6 million and $2.3 million, respectively. The unaudited pro forma information for the periods set forth below gives effect to the Transaction as if it had occurred as of December 26, 2020, the beginning of the fiscal 2021 period. The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition been consummated as of that time. For the Year Ended (in thousands, unaudited) December 31, 2022 December 25, 2021 Net sales $ 1,888,379 $ 1,556,360 Net income $ 130,375 $ 143,419 Diluted earnings per share $ 4.13 $ 4.49 The fiscal 2022 unaudited pro forma net income set forth above was adjusted to exclude the impact of acquisition date fair value adjustments to inventory, and to also remove acquisition-related transaction costs. The 2021 unaudited pro forma net income was adjusted to include the impact of these items. DPL Holding Corporation (“Dayton Parts”) On August 10, 2021, we acquired 100% of the equity interests of Dayton Parts, a manufacturer of chassis and other parts designed to serve the heavy-duty vehicle sector of the aftermarket for a purchase price of $344.9 million in cash (net of $8.8 million of acquired cash), after certain customary post-acquisition purchase price adjustments. The acquisition was funded by cash on hand as well as through the refinancing of our revolving credit facility discussed further in Note 7. The transaction was accounted for as a business combination under the acquisition method of accounting. We have allocated the purchase price to tangible and identifiable intangible assets acquired and liabilities assumed based on their estimated fair values. During the year ended December 25, 2021, we recorded measurement and period adjustments of approximately $2.1 million to decrease goodwill, $0.6 million to decrease the purchase price due to customary net working capital adjustments, $0.1 million to increase other current liabilities, and $1.6 million to decrease deferred tax liabilities. Our measurement period adjustments for Dayton Parts were complete as of December 25, 2021. The table below details the fair values of the assets acquired and the liabilities assumed at the acquisition date, including applicable measurement period adjustments: (in thousands) Accounts receivable $ 23,216 Inventories 79,625 Prepaids and other current assets 2,302 Property, plant and equipment 29,900 Goodwill 106,816 Identifiable intangible assets 160,400 Operating lease right-of-use assets 21,248 Other assets 848 Accounts payable (11,970) Accrued compensation (2,784) Other current liabilities (7,604) Long-term operating lease liabilities (18,444) Deferred tax liabilities (38,665) Net cash consideration $ 344,888 The estimated valuation of the intangible assets acquired, and related amortization periods are as follows: (in thousands) Fair Value Amortization Period (in years) Customer relationships $ 124,100 20 Product portfolio 25,300 20 Trade names 11,000 10 Total $ 160,400 The fair values assigned to intangible assets were estimated by discounting expected cash flows based on the relief from royalty and multi-period excess earnings valuation methodologies. These valuation methods rely on management judgment, including expected future cash flows resulting from existing customer relationships, customer attrition rates, contributory effects of other assets utilized in the business, royalty rates and other factors. The goodwill recognized is attributable primarily to strategic and synergistic opportunities related to the Company’s and Dayton Parts’ existing automotive aftermarket businesses, the assembled workforce of Dayton Parts and other factors. The goodwill is not expected to be deductible for tax purposes. The financial results of the acquisition have been included in the consolidated financial statements since the date of acquisition. The net sales and net income of Dayton Parts included in the consolidated financial statements for the fiscal year ended December 25, 2021 were $78.0 million and $0.0 million, respectively. The unaudited pro forma information for the periods set forth below gives effect to the Dayton Parts acquisition as if it had occurred as of December 28, 2019, the beginning of the fiscal 2020 period. The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition been consummated as of that time. For the Year Ended (in thousands, unaudited) December 25, 2021 December 26, 2020 Net sales $ 1,468,415 $ 1,260,077 Net income $ 147,090 $ 100,334 Diluted earnings per share $ 4.60 $ 3.10 The fiscal 2021 unaudited pro forma net income set forth above was adjusted to exclude the impact of acquisition date fair value adjustments to inventory, and to also remove acquisition-related transaction costs. The 2020 unaudited pro forma net income was adjusted to include the impact of these items. Power Train Industries, Inc. On January 2, 2020, we acquired the remaining 60% of the outstanding stock of PTI. The total purchase price for PTI was approximately $30.7 million, which included $18.4 million paid for the remaining 60% of the outstanding stock, subject to customary purchase price adjustments, and $12.3 million which represents the fair value of the previously held 40% equity interest in PTI that was acquired by the Company in 2016. As a result of the acquisition, we recorded a gain of approximately $2.5 million in other income (expense), net during the year ended December 26, 2020 from the increase in fair value of the previously owned 40% interest in PTI. We previously accounted for our 40% interest as an equity-method investment. The transaction was accounted for as a business combination under the acquisition method of accounting. Accordingly, the assets acquired, and liabilities assumed were recorded at fair value, with the remaining purchase price recorded as goodwill. In connection with this acquisition, we recorded $16.7 million in goodwill, $7.3 million of identified intangibles, and $6.7 million of other assets, net, consisting of $3.5 million of cash, $2.0 million of accounts receivable, $5.6 million of inventory, and ($4.4 million) of net other assets and liabilities. Our measurement period adjustments for PTI were complete as of December 26, 2020. The valuation of the intangible assets acquired and related amortization periods are as follows: (in thousands) Valuation Amortization Customer relationships $ 4,600 15 Trade names 700 5 Technology 1,800 8 Other 190 5 Total $ 7,290 The fair values of the customer relationships and trade names were estimated using an income approach based on the present value of future cash flows. The goodwill recognized is attributable primarily to strategic and synergistic opportunities related to existing automotive aftermarket businesses, the assembled workforce of PTI and other factors. The goodwill is not expected to be deductible for tax purposes. The financial results of the acquisition have been included in the Consolidated Financial Statements since the date of acquisition.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2022
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories were as follows: (in thousands) December 31, 2022 December 25, 2021 Raw materials $ 34,267 $ 12,746 Bulk product 234,871 225,879 Finished product 478,032 287,415 Packaging materials 8,731 5,948 Total $ 755,901 $ 531,988

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment include the following: (in thousands) December 31, 2022 December 25, 2021 Buildings $ 59,980 $ 58,788 Machinery, equipment and tooling 184,184 146,999 Furniture, fixtures and leasehold improvements 12,225 7,303 Software and computer equipment 100,814 90,471 Total 357,203 303,561 Less-accumulated depreciation and amortization (208,726) (188,697) Property, plant and equipment, net $ 148,477 $ 114,864 Depreciation and amortization expenses associated with property, plant, and equipment were $28.6 million, $26.3 million, and $26.6 million in fiscal 2022, fiscal 2021, and fiscal 2020, respectively.

Leases

Leases	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Leases	LeasesWe determine whether an arrangement is a lease at inception. This determination generally depends on whether the arrangement conveys the right to control the use of an identified fixed asset explicitly or implicitly for a period of time in exchange for consideration. Control of an underlying asset is conveyed if we obtain the rights to direct the use of the asset and to obtain substantially all of the economic benefit from its use. We have operating leases for distribution centers, sales offices and certain warehouse and office equipment. Our operating leases have remaining lease terms of 1 to 11 years, many of which include one or more renewal options. We consider these renewal options in determining the lease term used to establish our right-of-use assets and lease liabilities when it is determined that it is reasonably certain that the renewal option will be exercised. Substantially all of our equipment leases and some of our real estate leases have terms of less than one year. Some of our operating lease agreements include variable lease costs, primarily taxes, insurance, common area maintenance or increases in rental costs related to inflation. Operating leases are included in the right-of-use lease assets, other current liabilities and long-term lease liabilities on the Consolidated Balance Sheet. Right-of-use assets and lease liabilities are recognized at each lease’s commencement date based on the present values of its lease payments over its respective lease term. When a borrowing rate is not explicitly available for a lease, our incremental borrowing rate is used based on information available at the lease’s commencement date to determine the present value of its lease payments. The incremental borrowing rate is not commonly quoted and is derived through a combination of inputs including our credit rating and the impact of full collateralization. The incremental borrowing rate is based on our collateralized borrowing capabilities over a similar term to the lease payments. We utilized the consolidated group borrowing rate for all leases as we operate a centralized treasury operation. Operating lease payments are recognized on a straight-line basis over the lease term. We had no material finance leases as of December 31, 2022 or December 25, 2021. Practical Expedients and Accounting Policy Elections We have made certain accounting policy elections and are using certain practical expedients permitted under GAAP, as follows: • Include both lease and non-lease components as a single lease component, as non-lease components of contracts have not historically been material. • Account for leases with terms of one year or less as short-term leases and, as such, are not included in the right-of-use assets or lease liabilities. As of December 31, 2022 and December 25, 2021 there were no material variable lease costs or sublease income. Cash paid for operating leases was $16.8 million, $9.2 million and $7.7 million during fiscal 2022, fiscal 2021 and fiscal 2020, respectively, which are classified in operating activities on the Consolidated Statements of Cash Flows. The following table summarizes the lease expense: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Operating lease expense $ 17,340 $ 9,549 $ 7,732 Short-term lease expense 5,838 3,172 3,647 Total lease expense $ 23,178 $ 12,721 $ 11,379 Supplemental balance sheet information related to our operating leases is as follows: (in thousands) December 31, 2022 December 25, 2021 Operating lease right-of-use assets $ 109,977 $ 59,029 Other accrued liabilities $ 15,912 $ 10,065 Long-term operating lease liabilities 98,221 52,443 Total operating lease liabilities $ 114,133 $ 62,508 Weighted average remaining lease term (years) 7.76 7.55 Weighted average discount rate 3.91 % 3.73 % The following table summarizes the maturities of our lease liabilities for all operating leases as of December 31, 2022: (in thousands) December 31, 2022 2023 $ 19,984 2024 18,714 2025 17,033 2026 16,821 2027 15,611 Thereafter 44,318 Total lease payments 132,481 Less: Imputed interest (18,348) Present value of lease liabilities $ 114,133

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill Goodwill included the following: (in thousands) December 31, 2022 December 25, 2021 Balance at beginning of period $ 197,332 $ 91,080 Goodwill acquired 247,247 108,945 Measurement period adjustments for Dayton acquisition — (2,130) Foreign currency translation (1,544) (563) Balance at end of period $ 443,035 $ 197,332 Intangible Assets Intangible assets, subject to amortization, included the following: December 31, 2022 December 25, 2021 Intangible assets subject to amortization Weighted Average Amortization Period (years) Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value (dollars in thousands) Customer relationships 17.0 $ 175,430 $ 21,643 $ 153,787 $ 149,150 $ 12,139 $ 137,011 Trade names 17.4 67,690 6,370 61,320 17,760 2,592 15,168 Product Portfolio 15.6 107,800 2,953 104,847 25,300 460 24,840 Technology 5.7 2,167 820 1,347 2,167 571 1,596 Patents and Other 9.9 1,430 322 1,108 430 236 194 Total $ 354,517 $ 32,108 $ 322,409 $ 194,807 $ 15,998 $ 178,809 Amortization expense associated with intangible assets was $14.2 million, $6.5 million and $3.4 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. The estimated future amortization expense for intangible assets as of December 31, 2022, is summarized as follows: (in thousands) 2023 $ 21,740 2024 21,740 2025 21,596 2026 21,418 2027 19,924 Thereafter 215,991 Total $ 322,409

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt On August 10, 2021, in connection with the acquisition of Dayton Parts, we entered into a new credit agreement that provided for a $600 million revolving credit facility, including a letter of credit sub-facility of up to $60 million (the “2021 Facility”). The 2021 Facility replaced our previous $100 million revolving credit facility. The 2021 Facility was scheduled to mature on August 10, 2026 and was guaranteed by the Company’s material domestic subsidiaries (together with the Company, the “Credit Parties”) and was supported by a security interest in substantially all of the Credit Parties’ personal property and assets, subject to certain exceptions. In connection with the acquisition of SuperATV, we amended and restated the 2021 Facility (as amended and restated, the “New Facility”) by and among us, the lenders from time to time party thereto, and the administrative agent. In addition to including the existing $600.0 million revolving facility, the New Facility includes a $500.0 million term loan, which was used to fund the SuperATV acquisition. The New Facility (including the revolving portion of the New Facility) matures on October 4, 2027, is guaranteed by the Credit Parties and is supported by a security interest in substantially all of the Credit Parties’ personal property and assets, subject to certain exceptions . Borrowings under the New Facility bear interest at a rate per annum equal to, at our option, either a term Secured Overnight Financing Rate (“Term SOFR”) (subject to a 0.00% floor) or a base rate (as defined in the New Facility), in each case plus an applicable margin of, initially (i) in the case of Term SOFR loans, 1.50% or (ii) in the case of base rate loans, 0.50%. The applicable margin for (i) base rate loans ranges from 0.000% to 1.000% per annum and (ii) for Term SOFR loans ranges from 1.000% to 2.000% per annum, in each case, based on the Total Net Leverage Ratio (as defined in the New Facility). The commitment fee under the New Facility is initially equal to 0.20% and thereafter ranges from 0.125% to 0.250% based on the Total Net Leverage Ratio (as defined in the New Facility). As of December 31, 2022, the interest rate on the outstanding borrowings under the New Facility was 5.78% and the commitment fee was 0.15%. The term loan portion of the New Facility contains mandatory repayment provisions that require quarterly principal amortization payments on the term loan equal to a defined percentage of the initial borrowing amount of $500.0 million as follows, with the balance payable upon maturity in October 2027: Fiscal Quarter Ending Principal Amortization Payment Percentage December 31, 2022 through September 24, 2024 0.625% December 31, 2024 through September 30, 2025 1.250% December 31, 2025 through September 30, 2027 1.875% The New Facility contains affirmative and negative covenants, including, but not limited to, covenants regarding capital expenditures, share repurchases, and financial covenants related to the ratio of consolidated interest expense to consolidated EBITDA and the ratio of total net indebtedness to consolidated EBITDA, each as defined by the New Facility. As of December 31, 2022, we were not in default with respect to the New Facility.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions We lease our Colmar, PA facility and a portion of our Lewisberry, PA facility from entities in which Steven L. Berman, our Executive Chairman, and certain of his family members are owners. Each lease is a non-cancelable operating lease. Total rental payments to those entities under these lease arrangements were $2.5 million, $2.3 million, and $1.8 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. The lease for our corporate headquarters in Colmar, PA was renewed during December 2022, effective as of January 1, 2023, and will expire on December 31, 2027. The lease for our Lewisberry, PA operating facility was signed in September 2020 and will expire on December 31, 2027. We are a partner in a joint venture with one of our suppliers and own a minority interest in two other suppliers. Purchases from these companies, and from PTI before our full acquisition on January 2, 2020 were $24.9 million, $18.9 million and $10.7 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of the income tax provision (benefit) are as follows: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Current: Federal $ 31,683 $ 43,374 $ 33,698 State 7,141 5,755 4,276 Foreign 1,708 1,075 491 40,532 50,204 38,465 Deferred: Federal (4,003) (9,609) (8,475) State (1,022) (1,368) (893) Foreign (855) (993) (231) (5,880) (11,970) (9,599) Total $ 34,652 $ 38,234 $ 28,866 The following is a reconciliation of income taxes at the statutory tax rate to the Company's effective tax rate: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Federal taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal tax benefit 2.7 2.1 2.0 Research and development tax credit (0.7) (0.4) (0.6) Federal permanent items (0.2) — (0.2) Effect of foreign operations — (0.2) 0.1 Other (0.6) — (1.0) Effective tax rate 22.2 % 22.5 % 21.3 % At December 31, 2022, we had $3.9 million of unrecognized tax benefits, all of which would affect our effective tax rate if recognized. The following table summarizes the change in unrecognized tax benefits for the three years ended December 31, 2022: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Balance at beginning of year $ 1,204 $ 1,060 $ 2,301 Reductions due to lapses in statutes of limitations (139) — — Reductions due to tax positions settled — — (1,308) Additions related to positions taken during a prior period 2,136 — — Reductions due to reversals of prior year positions — (30) (202) Additions based on tax positions taken during the current period 655 174 269 Balance at end of year 3,856 1,204 1,060 We recognize interest and penalties related to unrecognized tax benefits in income tax expense. As of December 31, 2022, accrued interest and penalties related to unrecognized tax benefits were immaterial. The Company does not anticipate material changes in the amount of unrecognized income tax benefits over the next year. Deferred income taxes result from timing differences in the recognition of revenue and expense between tax and financial statement purposes. The sources of temporary differences are as follows: (in thousands) December 31, 2022 December 25, 2021 Assets: Inventories $ 13,662 $ 13,689 Accounts receivable 20,446 18,589 Operating lease liability 24,904 14,526 Accrued expenses 12,526 7,515 Net operating losses 1,285 1,892 Foreign tax credits 469 469 State tax credits 403 819 Capital loss carryforward 481 467 Total deferred tax assets 74,176 57,966 Valuation allowance (1,377) (1,837) Net deferred tax assets 72,799 56,129 Liabilities: Depreciation 18,132 14,541 Goodwill and intangible assets 41,693 45,522 Operating lease right of use asset 23,924 13,733 Other 876 309 Gross deferred tax liabilities 84,625 74,105 Net deferred tax (liabilities) assets $ (11,826) $ (17,976) A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. When determining the amount of net deferred tax assets that are more likely than not to be realized, the Company assesses all positive and negative evidence. This evidence includes, but is not limited to, prior earnings history, expected future earnings, carryback and carryforward periods and the feasibility of ongoing tax strategies that could potentially enhance the likelihood of the realization of the deferred tax asset. Management has determined it was necessary to establish a valuation allowance against the foreign tax credits, various state tax credits and a capital loss carryforward. Based on our history of taxable income and our projection of future earnings, we believe that it is more likely than not that sufficient taxable income will be generated in the foreseeable future to realize the remaining net deferred tax assets. During 2022, we reduced the valuation allowance against the deferred tax assets noted above by $0.5 million. As of December 31, 2022, the Company has tax-effected net operating loss carryforwards of $1.0 million and $0.2 million for U.S. federal and state jurisdictions, respectively. Tax-effected federal net operating losses of $0.1 million begin to expire in 2036. The remaining federal net operating losses do not expire. The state net operating loss carryforwards expire in various years starting in 2037.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Shareholders’ Agreement . A shareholders’ agreement was entered into in September 1990 and amended and restated on July 1, 2006. Under the agreement, each of the late Richard Berman, Steven Berman, Jordan Berman, Marc Berman, Fred Berman, Deanna Berman and additional shareholders named in the agreement has, among other things, granted the others of them rights of first refusal, exercisable on a pro-rata basis or in such other proportions as the exercising shareholders may agree, to purchase shares of our common stock which any of them, or upon their deaths their respective estates, proposes to sell to third parties. We have agreed with these shareholders that, upon their deaths, to the extent that any of their shares are not purchased by any of these surviving shareholders and may not be sold without registration under the Securities Act of 1933, as amended (the "1933 Act"), we will use our best efforts to cause those shares to be registered under the 1933 Act. The expenses of any such registration will be borne by the estate of the deceased shareholder. The additional shareholders that are a party to the agreement are trusts affiliated with the late Richard Berman, Steven Berman, Jordan Berman, Marc Berman or Fred Berman, or each person’s respective spouse or children. CBP Matter . During 2020, we commenced a voluntary disclosure process in which we committed to disclosing to U.S. Customs & Border Protection (“CBP”) certain product misclassifications and reimbursing CBP for any resulting underpayment of duties that were identified as part of a voluntary internal review conducted by the Company. The Company recorded an estimated liability of $2.8 million in its Statement of Operations for the year ended December 26, 2020, which represents the Company’s estimated underpayment of duties, after deducting its estimated overpayment of duties, to CBP due to misclassifications over the prior five-year period, which is the applicable statute of limitations, plus applicable interest. In June 2020, we completed our internal review and submitted our prior disclosure statement to CBP, along with a payment of $2.8 million for underpaid duties and interest. We have cooperated with CBP in connection with its review of our prior disclosure submission, including providing additional information as requested. CBP has not yet communicated that its review of our prior disclosure submission is completed. Acquisitions. We have contingent consideration related to an acquisition due to the uncertainty of the ultimate amount of any payments that will become due as earnout payments if performance targets are achieved. If the remaining performance targets for the acquisition are fully achieved, the maximum additional contingent payments to be made under the Transaction documents would be $100.0 million in the aggregate. As of December 31, 2022, we accrued $20.0 million, representing the fair value of the estimated payments that we expect could become due in connection with the Transaction. For the year ended December 31, 2022, we recorded a charge of $1.8 million in connection with earnout provisions under a prior acquisition, with the charge included in Selling, General and Administration expenses. During the year ended December 31, 2022, we paid $1.8 million to fully settle this earnout provision associated with the prior acquisition. Other Contingencies . We are a party to or otherwise involved in legal proceedings that arise in the ordinary course of business, such as various claims and legal actions involving contracts, employment claims, competitive practices, intellectual property infringement, product liability claims and other matters arising out of the conduct of our business. In the opinion of management, none of the actions, individually or in the aggregate, taking into account relevant insurance coverage, would likely have a material financial impact on the Company and we believe the range of reasonably possible losses from current matters, taking into account relevant insurance coverage, is immaterial. However, legal matters are subject to inherent uncertainties and there exists the possibility that the ultimate resolution of any of these matters could have a material adverse impact on the Company’s cash flows, financial position and results of operations in the period in which any such effects are recorded.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Our primary source of revenue is from contracts with and purchase orders from customers. In most instances, our contract with a customer is the customer’s purchase order. Upon acceptance of the purchase order, a contract exists with a customer as a sales agreement indicates the approval and commitment of the parties, identifies the rights of both parties, identifies the payment terms, and has commercial substance. At this point, we believe it is probable that we will collect the consideration to which we will be entitled in exchange for the goods transferred to the customer. For certain customers, we may also enter into a sales agreement that outlines pricing considerations as well as the framework of terms and conditions which apply to future purchase orders for that customer. In these situations, our contract with the customer is both the sales agreement as well as the specific customer purchase order. As our contract with a customer is typically for a single transaction or customer purchase order, the duration of the contract is typically one year or less. As a result, we have elected to apply certain practical expedients and omit certain disclosures of remaining performance obligations for contracts that have an initial term of one year or less as permitted by GAAP. Revenue is recognized from product sales when goods are shipped, title and risk of loss and control have been transferred to the customer, and collection is reasonably assured. We estimate the transaction price at the inception of a contract or upon fulfilling a purchase order, including any variable consideration, and will update the estimate for changes in circumstances. We record estimates for cash discounts, defective and slow-moving product returns, promotional rebates, core return deposits and other discounts in the period the related product revenue is recognized (“Customer Credits”). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are shown as an increase in accrued customer rebates and returns. Customer Credits are estimated based on contractual provisions, historical experience, and our assessment of current market conditions. Actual Customer Credits have not differed materially from estimated amounts for each period presented. Amounts billed to customers for shipping and handling are included in net sales. Costs associated with shipping and handling are included in cost of goods sold. We have concluded that our estimates of variable consideration are not constrained according to the definition in the standard. All of our revenue was recognized under the point of time approach during fiscal 2022, fiscal 2021 and fiscal 2020. Also, we do not have significant financing arrangements with our customers. Our credit terms are all less than one year. Lastly, we do not receive noncash consideration (such as materials or equipment) from our customers to facilitate the fulfillment of our contracts. Practical Expedients and Accounting Policy Elections We have made certain accounting policy elections and are using certain practical expedients permitted under GAAP, as follows: • Not adjust the promised amount of consideration for the effects of a significant financing component as we expect, at contract inception, that the period between when we transfer a promised good or service to the customer and when the customer pays for that good or service will be one year or less. • Expense costs to obtain a contract as incurred when the expected period of benefit, and therefore the amortization period, is one year or less. • Exclude from the measurement of the transaction price all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction and collected by the entity for a customer, including sales, use, value-added, excise and various other taxes. • Account for shipping and handling activities that occur after the customer has obtained control of a good as a fulfillment activity rather than a separate performance obligation. Disaggregated Revenue The following tables present our disaggregated net sales by type of major good / product line, and geography. For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Powertrain $ 644,059 $ 539,235 $ 442,221 Chassis 715,005 458,986 324,399 Motor Vehicle Body 314,451 288,599 266,699 Hardware 60,234 58,429 59,429 Net Sales $ 1,733,749 $ 1,345,249 $ 1,092,748 For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Net Sales to U.S. Customers $ 1,606,472 $ 1,269,050 $ 1,031,183 Net Sales to Non-U.S. Customers 127,277 76,199 61,565 Net Sales $ 1,733,749 $ 1,345,249 $ 1,092,748

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Capital Stock	Capital Stock Controlling Interest by Officers, Directors and Family Members . As of December 31, 2022 and December 25, 2021, Steven Berman, the Executive Chairman of the Company, and members of his family beneficially owned approximately 17% of the outstanding shares of our common stock, and could influence matters requiring approval of shareholders, including the election of the Board of Directors and the approval of significant transactions. Undesignated Stock . We have 50,000,000 shares authorized of undesignated capital stock for future issuance. The designation, rights and preferences of such shares will be determined by our Board of Directors. Incentive Stock Plan . Prior to May 16, 2018, we issued stock compensation grants under our 2008 Stock Option and Stock Incentive Plan. On May 16, 2018, our shareholders approved our 2018 Stock Option and Stock Incentive Plan (the “2018 Plan” or the “Plan”), which supersedes our 2008 Stock Option and Stock Incentive Plan. All future stock compensation grants will be issued under the 2018 Plan. Under the terms of the Plan, our Board of Directors may grant up to 1,200,000 shares of common stock in the form of shares of restricted stock, restricted stock units, stock appreciation rights and stock options, or combinations thereof, to officers, directors, employees, consultants and advisors. Grants under the Plan must be made within ten years of the date the Plan was approved. Stock options are exercisable upon the terms set forth in each grant agreement approved by the Board of Directors, but in no event more than ten years from the date of grant. Restricted stock and restricted stock units vest in accordance with the terms set forth in each applicable award agreement approved by our Board of Directors. At December 31, 2022, 599,845 shares were available for grant under the Plan. Restricted Stock Awards (“RSAs”) and Restricted Stock Units (“RSUs”) Prior to March 2020, we issued RSAs to certain employees and members of our Board of Directors. Grants were made in the form of time-based RSAs and performance-based RSAs. For all RSAs, we retain the restricted stock, and any dividends paid thereon, until the vesting restrictions have been met. For time-based RSAs, compensation cost is recognized on a straight-line basis over the vesting period and is calculated using the closing price per share of our common stock on the grant date. Prior to 2019, we issued performance-based RSAs tied to growth in adjusted pre-tax income. Compensation cost related to those awards was recognized over the performance period and was calculated using the closing price per share of our common stock on the grant date and an estimate of the probable outcome of the performance conditions as of the reporting date. In 2019, we introduced performance-based RSAs that vest based on our total shareholder return ranking relative to the S&P Mid-Cap 400 Growth Index over a three-year performance period. For those awards, compensation cost is recognized on a straight-line basis over the performance period and is calculated using the simulated fair value per share of our common stock based on the application of a Monte Carlo simulation model. This valuation technique includes estimating the movement of stock prices and the effects of volatility, interest rates and dividends. Beginning in March 2020, we began issuing RSUs to certain employees and members of our Board of Directors. For time-based RSUs, compensation cost is recognized on a straight-line basis over the vesting period and is calculated using the closing price per share of our common stock on the grant date. Also, in March 2020, we began issuing performance-based RSUs that vest based on our total shareholder return ranking relative to the S&P Mid-Cap 400 Growth Index over a three-year performance period. For performance-based RSUs tied to total shareholder return, compensation cost is recognized on a straight-line basis over the performance period and is calculated using the simulated fair value per share of our common stock based on the application of a Monte Carlo simulation model as discussed in the paragraph above. The following table summarizes the weighted average valuation assumptions used to calculate the fair value of total shareholder return performance-based RSUs granted: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Share price $ 96.36 $ 101.45 $ 61.68 Expected dividend yield 0.0 % 0.0 % 0.0 % Expected stock price volatility 38.3 % 38.9 % 31.5 % Risk-free interest rate 1.6 % 0.2 % 0.9 % Expected life 2.8 years 2.8 years 2.8 years The share price is the Company’s closing share price as of the valuation date. The risk-free rate is based on the U.S. Treasury security with terms equal to the expected time of vesting as of the grant date. The weighted-average grant-date fair value of total shareholder return RSUs granted during fiscal 2022, fiscal 2021, and fiscal 2020 were $111.31, $131.02, and $65.09, respectively. Compensation cost related to performance-based and time-based RSAs and RSUs was $7.2 million, $6.1 million and $3.2 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively, and was included in selling, general and administrative expense in the Consolidated Statements of Operations. No cost was capitalized during fiscal 2022, fiscal 2021 or fiscal 2020. The following table summarizes our RSA and RSU activity for the three years ended December 31, 2022: Shares Weighted Balance at December 28, 2019 177,491 $ 76.70 Granted 83,875 $ 64.66 Vested (27,477) $ 71.25 Canceled (16,154) $ 76.44 Balance at December 26, 2020 217,735 $ 72.77 Granted 81,694 $ 106.23 Vested (45,970) $ 70.62 Canceled (46,782) $ 74.85 Balance at December 25, 2021 206,677 $ 85.97 Granted 130,131 $ 96.32 Vested (55,255) $ 83.70 Canceled (42,631) $ 85.89 Balance at December 31, 2022 238,922 $ 92.07 As of December 31, 2022, there was approximately $13.5 million of unrecognized compensation cost related to unvested RSAs and RSUs, which is expected to be recognized over a weighted-average period of approximately 2.3 years. Cash flows resulting from tax deductions in excess of the tax effect of compensation cost recognized in the financial statements are classified as operating cash flows. The excess tax benefit generated from RSAs and RSUs was immaterial for all periods presented. Stock Options We grant stock options to certain employees. We expense the grant-date fair value of stock options as compensation cost over the vesting or performance period. Compensation cost charged against income for stock options was $1.7 million, $1.3 million and $1.0 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively, and was included in selling, general and administrative expense in the Consolidated Statements of Operations. No cost was capitalized during fiscal 2022, fiscal 2021 or fiscal 2020. We used the Black-Scholes option valuation model to estimate the fair value of stock options granted. Expected volatility and expected dividend yield are based on the actual historical experience of our common stock. The expected life represents the period of time that options granted are expected to be outstanding and was calculated using historical option exercise data. The risk-free rate is based on the U.S. Treasury security with terms equal to the expected time of exercise as of the grant date. The following table summarizes the weighted average valuation assumptions used to calculate the fair value of options granted and the associated weighted-average grant-date fair values: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Expected dividend yield 0 % 0 % 0 % Expected stock price volatility 34 % 34 % 29 % Risk-free interest rate 1.8 % 0.7 % 0.8 % Expected life of options 5.3 years 5.3 years 5.3 years Weighted-average grant-date fair value $ 32.55 $ 31.68 $ 17.84 The following table summarizes our stock option activity for the three years ended December 31, 2022: Shares Option Price Weighted Weighted Aggregate Balance at December 28, 2019 181,712 $41.59– $82.94 $ 70.78 Granted 109,352 $61.68 – $83.06 $ 63.25 Exercised (31,521) $41.59 – $82.94 $ 50.77 Canceled (8,764) $61.68 – $74.21 $ 65.24 Balance at December 26, 2020 250,779 $41.59 –$84.93 $ 70.21 Granted 59,578 $95.98 – $103.61 $ 101.36 Exercised (67,504) $41.59 – $82.94 $ 70.04 Canceled (9,457) $61.68 –$101.45 $ 79.02 Balance at December 25, 2021 233,396 $61.68– $103.61 $ 77.85 Granted 79,749 $83.81– $111.53 $ 96.96 Exercised (32,201) $61.68 – $83.06 $ 71.74 Expired (663) $101.45 $ 101.45 Canceled (12,162) $61.68 – $101.45 $ 82.19 Balance at December 31, 2022 268,119 $61.68 – $111.53 $ 84.03 6.2 $ 1,572 Exercisable at December 31, 2022 98,600 $61.68 – $103.61 $ 76.32 3.9 $ 796 As of December 31, 2022, there was approximately $3.4 million of unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of approximately 2.6 years. Cash received from option exercises was $1.0 million, $2.5 million, and $1.2 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. The tax benefit generated from option exercises was immaterial for all periods presented. Employee Stock Purchase Plan. In May 2017, our shareholders approved the Dorman Products, Inc. Employee Stock Purchase Plan (the “ESPP”), which makes available 1,000,000 shares of our common stock for sale to eligible employees. The purpose of the ESPP, which is qualified under Section 423 of the Internal Revenue Service Code of 1986, as amended, is to encourage stock ownership through payroll deductions and limited cash contributions by our employees. These contributions are used to purchase shares of the Company’s common stock at a 15% discount from the lower of the market price at the beginning or end of the purchase window. Beginning in March 2018, share purchases under the plan were made twice annually, with the purchase windows being April to September and October to March. In 2022, the decision was made to modify the timing of those two purchase windows to align them with the calendar year. As a result, beginning January 2022, the two purchase windows are January to June and July to December. In order to effectuate that alignment, the purchase window beginning in October 2021 was shortened from six months to three months and ended December 2022. There were 25,600 shares, 40,303 shares and 79,089 shares purchased under this plan during fiscal 2022, fiscal 2021 and fiscal 2020, respectively. Compensation cost under the ESPP plan was $0.4 million, $0.9 million and $3.3 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. The tax benefit generated from ESPP purchases was immaterial in fiscal 2022, fiscal 2021, and fiscal 2020, respectively. Common Stock Repurchases. We periodically repurchase, at the then current market price, and cancel common stock issued to the Dorman Products, Inc. 401(k) Plan and Trust (the “401(k) Plan”). 401(k) Plan participants can no longer purchase shares of Dorman common stock as an investment option under the 401(k) Plan. Shares are generally purchased from the 401(k) Plan when participants sell units as permitted by the 401(k) Plan or elect to leave the 401(k) Plan upon retirement, termination or other reasons. The following table summarizes the repurchase and cancellation of common stock: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Shares repurchased and canceled 23,015 11,452 23,360 Total cost of shares repurchased and canceled (in thousands) $ 2,357 $ 1,172 $ 1,895 Average price per share $ 102.40 $ 102.38 $ 81.12 At December 31, 2022, the 401(k) Plan held 160,901 shares of our common stock. Share Repurchase Program . Our Board of Directors has authorized a share repurchase program. Through several actions, including expansions and extensions, the Board has authorized the repurchase of up to $600 million of our outstanding common stock through December 31, 2024. Under this program, share repurchases may be made from time to time depending on market conditions, share price, share availability and other factors at our discretion. At December 31, 2022, $228.0 million was available for repurchase under this program. The following table summarizes the repurchase and cancellation of common stock : For the Years Ended December 31, 2022 December 25, 2021 December 26, 2020 Shares repurchased and canceled 180,750 605,628 439,275 Total cost of shares repurchased and canceled (in thousands) $ 17,577 $ 61,583 $ 36,781 Average price per share $ 97.24 $ 101.68 $ 83.73

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per ShareBasic earnings per share was calculated by dividing our net income by the weighted average number of common shares outstanding during the period, excluding unvested RSAs which are considered to be contingently issuable. To calculate diluted earnings per share, common share equivalents are added to the weighted average number of common shares outstanding. Common share equivalents are calculated using the treasury stock method and are computed based on outstanding stock-based awards. Stock-based awards of approximately 63,500 shares, 14,250 shares and 35,975 shares were excluded from the calculation of diluted earnings per share for fiscal 2022, fiscal 2021 and fiscal 2020, respectively, as their effect would have been anti-dilutive. The following table sets forth the computation of basic earnings per share and diluted earnings per share: For the Year Ended (in thousands, except per share data) December 31, 2022 December 25, 2021 December 26, 2020 Numerator: Net income $ 121,549 $ 131,532 $ 106,870 Denominator: Weighted average basic shares outstanding 31,434 31,810 32,280 Effect of compensation awards 109 151 93 Weighted average diluted shares outstanding 31,543 31,961 32,373 Earnings Per Share: Basic $ 3.87 $ 4.13 $ 3.31 Diluted $ 3.85 $ 4.12 $ 3.30

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Business Segments	Business Segments We have determined that our business comprises a single reportable operating segment, namely, the sale of replacement and upgrade parts in the motor vehicle aftermarket industry, serving passenger cars, light-, medium-, and heavy-duty trucks as well as specialty vehicles. Net sales to countries outside the United States, primarily to Canada and Mexico, and to a lesser extent into Europe, the Middle East, and Australia, in fiscal 2022, fiscal 2021 and fiscal 2020 were $127.3 million, $76.2 million and $61.6 million, respectively. Net long-lived assets outside the United States, consisting of net property, plant and equipment was $3.6 million and $1.0 million as of December 31, 2022 and December 25, 2021, respectively.

Schedule II_ Valuation and Qual

Schedule II: Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II: Valuation and Qualifying Accounts	SCHEDULE II: Valuation and Qualifying Accounts For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Allowance for doubtful accounts: Balance, beginning of period $ 1,326 $ 1,260 $ 957 Provision 56 177 315 Charge-offs (19) (111) (111) Acquisitions and other — — 99 Balance, end of period $ 1,363 $ 1,326 $ 1,260 Allowance for customer credits: Balance, beginning of period $ 188,080 $ 155,751 $ 105,950 Provision 373,157 334,615 308,783 Charge-offs (369,121) (302,286) (258,982) Balance, end of period $ 192,116 $ 188,080 $ 155,751

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation . The Consolidated Financial Statements include our accounts and the accounts of our wholly owned subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements . The preparation of financial statements in accordance with accounting principles generally accepted in the United States (“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 revenues and expenses during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents . We consider all highly liquid short-term investments with original maturities of three months or less to be cash equivalents.
Sales of Accounts Receivable	Sales of Accounts Receivable . We have entered into several customer-sponsored programs administered by unrelated financial institutions that permit us to sell certain accounts receivable at discounted rates to the financial institutions. Transactions under these programs were accounted for as sales of accounts receivable and were removed from our Consolidated Balance Sheet at the time of the sales transactions. During fiscal 2022, fiscal 2021 and fiscal 2020, we sold $1,048.7 million, $935.8 million and $740.0 million, respectively, under these programs. Selling, general and administrative expenses include factoring costs associated with these accounts receivable sales programs of $37.2 million, $11.7 million and $13.2 million in fiscal 2022, fiscal 2021 and fiscal 2020, respectively. Factoring costs are impacted both by interest rates and the timing of when accounts receivable are sold in comparison to the original due dates of those accounts receivable.
Inventories	Inventories . Inventories are stated at the lower of cost or net realizable value. Cost is determined by the first-in, first-out method. Inventories include the cost of material, freight, direct labor and overhead utilized in the processing of our products. We provide reserves for discontinued and excess inventory based upon historical demand, forecasted usage, estimated customer requirements and product line updates.
Property, Plant and Equipment	Property, Plant and Equipment . Property, plant and equipment are recorded at cost and depreciated over the estimated useful lives, which range from 1 to 39 years, using the straight-line method for financial statement reporting purposes and accelerated methods for income tax purposes. The costs of maintenance and repairs are expensed as incurred. Renewals and betterments are capitalized. Gains and losses on disposals are included in operating results. Estimated useful lives by major asset category are as follows: Buildings and building improvements 10 to 39 years Machinery, equipment and tooling 3 to 10 years Software and computer equipment 3 to 10 years Furniture, fixtures and leasehold improvements 1 to 39 years
Long-Lived Assets Including Goodwill and Other Acquired Intangible Assets	Long-Lived Assets Including Goodwill and Other Acquired Intangible Assets . Long-lived assets, including property, plant, and equipment and amortizable identifiable intangibles, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. The impairment review is a two-step process. First, recoverability is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount exceeds the estimated undiscounted future cash flows, the second step of the impairment test is performed, and an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds its fair value. The assets and liabilities of a disposal group classified as held for sale would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated.
Purchase Accounting	Purchase Accounting . The purchase price of an acquired business is allocated to the underlying tangible and intangible assets acquired and liabilities assumed based upon their respective fair market values, with the excess recorded as goodwill. Such fair market value assessments require judgments and estimates which may change over time and may cause the final amounts to differ materially from their original estimates. These adjustments to fair value assessments are recorded to goodwill over the purchase price allocation period which cannot exceed 12 months from the date of acquisition.
Other Assets	Other Assets . Other assets include primarily long-term core inventory, deposits, and equity method investments. Certain products we sell contain parts that can be recycled, or as more commonly referred to in our industry, remanufactured. We refer to these parts as cores. A used core is remanufactured and sold to the customer as a replacement for a unit inside a vehicle. Customers and end-users that purchase remanufactured products will generally return the used core to us, which we then use in the remanufacturing process to make another finished good. Our core inventory consists of used cores purchased and held in our facilities, used cores that are in the process of being returned from our customers and end-users, and remanufactured cores held in finished goods inventory at our facilities. Our products that utilize a core primarily include instrument clusters, hybrid batteries, radios, and climate control modules. Long-term core inventory was $19.8 million and $20.8 million as of December 31, 2022 and December 25, 2021, respectively. Long-term core inventory is recorded at the lower of cost or net realizable value. Cost is determined based on actual purchases of core inventory. We believe that the most appropriate classification of core inventory is a long-term asset. According to guidance provided under the Financial Accounting Standards Board Accounting Standards Codification, current assets are defined as “assets or resources commonly identified as those which are reasonably expected to be realized in cash or sold or consumed during the normal operating cycle of the business.” The determination of the long-term classification is based on our view that the value of the cores is not expected to be consumed or realized in cash during our normal annual operating cycle.
Other Accrued Liabilities	Other Accrued Liabilities. Other accrued liabilities include primarily accrued commissions, accrued income taxes, insurance liabilities, and other current liabilities.
Revenue Recognition and Accrued Customer Rebates and Returns	Revenue Recognition and Accrued Customer Rebates and Returns . Revenue is recognized from product sales when goods are shipped, title and risk of loss and control have been transferred to the customer and collection is reasonably assured. We record estimates for cash discounts, defective and slow-moving product returns, promotional rebates, core return deposits, and other discounts in the period of the sale ("Customer Credits"). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are shown as an increase of accrued customer rebates and returns, which is included in current liabilities. Customer Credits are estimated based on contractual provisions, historical experience, and our assessment of current market conditions. Actual Customer Credits have not differed materially from estimated amounts. Amounts billed to customers for shipping and handling are included in net sales. Costs associated with shipping and handling are included in cost of goods sold. As noted above, Customer Credits include core return deposits which are an estimate of the amount we believe we will refund to our customers when used cores are returned to us. The price we invoice to customers for remanufactured cores contains both the amount we charge to remanufacture the part and a deposit for the core. We charge a core deposit to encourage the customer to return the used core to us so that it can be used in our remanufacturing process. We allow our customers up to twenty-four months to return the used core to us. Core return deposits are reserved based on the expected deposits to be issued to customers based on historical returns.
Research and Development	Research and Development. Research and development costs are expensed as incurred.
Stock-Based Compensation	Stock-Based Compensation . At December 31, 2022 and December 25, 2021, we had awards outstanding under two stock-based employee compensation plans, which are described more fully in Note 12, Capital Stock. We record compensation expense for all awards granted. The value of restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) issued was based on the fair value of our common stock on the grant date. For performance-based RSAs tied to growth in adjusted pre-tax income, compensation costs related to the stock is recognized over the performance period and is calculated using the closing price per share of our common stock on the grant date and an estimate of the probable outcome of the performance conditions as of the reporting date. The fair value of performance-based RSUs, for which the performance measure is total shareholder return, is determined using a Monte Carlo simulation model. The fair value of stock options granted is determined using the Black-Scholes option valuation model on the grant date.
Income Taxes	Income Taxes . We follow the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities. Deferred tax assets or liabilities at the end of each period are determined using the enacted tax rate expected to be in effect when taxes are paid or recovered. Unrecognized income tax benefits represent income tax positions taken on income tax returns that have not been recognized in the consolidated financial statements. The Company recognizes the benefit of an income tax position only if it is more likely than not (greater than 50%) that the tax position will be sustained upon tax examination, based solely on the technical merits of the tax position. Otherwise, no benefit is recognized. The tax benefits recognized are measured based on the largest benefit that has a greater than 50% likelihood of being
Concentrations of Risk	Concentrations of Risk . Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and accounts receivable. All cash equivalents are managed within established guidelines that limit the amount that may be invested with one issuer. A significant percentage of our accounts receivable have been, and will continue to be, concentrated among a relatively small number of automotive retailers and warehouse distributors in the United States. Our 4 largest customers accounted for 69% and 71% of net accounts receivable as of December 31, 2022 and December 25, 2021, respectively. We continually monitor the credit terms and credit limits for these and other customers. In fiscal 2022 and fiscal 2021, approximately 64% and 74%, respectively, of our products were purchased from suppliers located in a variety of foreign countries, with the largest portion coming from China.
Fair Value Disclosures	Fair Value Disclosures . The carrying value of financial instruments such as cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate their fair value based on the short-term nature of these instruments. The carrying value of our long-term debt approximates its fair value because it bears interest at a rate indexed to a market rate (Term SOFR). Additionally, the fair value of assets acquired and liabilities assumed are determined at the date of acquisition. Contingent consideration associated with an acquisition is recorded at fair value at the acquisition date and is adjusted to fair value at each reporting period.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Estimated Useful Lives by Major Asset	Estimated useful lives by major asset category are as follows: Buildings and building improvements 10 to 39 years Machinery, equipment and tooling 3 to 10 years Software and computer equipment 3 to 10 years Furniture, fixtures and leasehold improvements 1 to 39 years

Business Acquisitions and Inv_2

Business Acquisitions and Investments (Tables)	12 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed	The table below details the fair values of the assets acquired and the liabilities assumed at the acquisition date: (in thousands) Accounts receivable $ 3,317 Inventories 90,428 Prepaids and other current assets 5,293 Property, plant and equipment 23,776 Goodwill 247,247 Identifiable intangible assets 157,500 Operating lease right-of-use assets 11,661 Other Assets 3,001 Accounts payable (7,436) Accrued compensation (2,086) Accrued customer rebates and returns (1,609) Other current liabilities (8,726) Long-term operating lease liabilities (9,508) Other long-term liabilities (3,307) Net cash consideration 509,551 The table below details the fair values of the assets acquired and the liabilities assumed at the acquisition date, including applicable measurement period adjustments: (in thousands) Accounts receivable $ 23,216 Inventories 79,625 Prepaids and other current assets 2,302 Property, plant and equipment 29,900 Goodwill 106,816 Identifiable intangible assets 160,400 Operating lease right-of-use assets 21,248 Other assets 848 Accounts payable (11,970) Accrued compensation (2,784) Other current liabilities (7,604) Long-term operating lease liabilities (18,444) Deferred tax liabilities (38,665) Net cash consideration $ 344,888
Schedule of Valuation of Intangible Assets Acquired and Related Amortization Periods	The estimated valuation of the intangible assets acquired, and related amortization periods are as follows: (in thousands) Fair Value Amortization Period (in years) Product portfolio 82,500 15 Trade names 48,400 20 Customer relationships 26,600 15 Total $ 157,500 The estimated valuation of the intangible assets acquired, and related amortization periods are as follows: (in thousands) Fair Value Amortization Period (in years) Customer relationships $ 124,100 20 Product portfolio 25,300 20 Trade names 11,000 10 Total $ 160,400 The valuation of the intangible assets acquired and related amortization periods are as follows: (in thousands) Valuation Amortization Customer relationships $ 4,600 15 Trade names 700 5 Technology 1,800 8 Other 190 5 Total $ 7,290
Summary of Unaudited Proforma Information	The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition been consummated as of that time. For the Year Ended (in thousands, unaudited) December 31, 2022 December 25, 2021 Net sales $ 1,888,379 $ 1,556,360 Net income $ 130,375 $ 143,419 Diluted earnings per share $ 4.13 $ 4.49 The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that would have been achieved had the acquisition been consummated as of that time. For the Year Ended (in thousands, unaudited) December 25, 2021 December 26, 2020 Net sales $ 1,468,415 $ 1,260,077 Net income $ 147,090 $ 100,334 Diluted earnings per share $ 4.60 $ 3.10

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2022
Inventory Disclosure [Abstract]
Inventories	Inventories were as follows: (in thousands) December 31, 2022 December 25, 2021 Raw materials $ 34,267 $ 12,746 Bulk product 234,871 225,879 Finished product 478,032 287,415 Packaging materials 8,731 5,948 Total $ 755,901 $ 531,988

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment include the following: (in thousands) December 31, 2022 December 25, 2021 Buildings $ 59,980 $ 58,788 Machinery, equipment and tooling 184,184 146,999 Furniture, fixtures and leasehold improvements 12,225 7,303 Software and computer equipment 100,814 90,471 Total 357,203 303,561 Less-accumulated depreciation and amortization (208,726) (188,697) Property, plant and equipment, net $ 148,477 $ 114,864

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Summary of Lease Expense	The following table summarizes the lease expense: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Operating lease expense $ 17,340 $ 9,549 $ 7,732 Short-term lease expense 5,838 3,172 3,647 Total lease expense $ 23,178 $ 12,721 $ 11,379
Summary of Supplemental Balance Sheet Information Related to Operating Leases	Supplemental balance sheet information related to our operating leases is as follows: (in thousands) December 31, 2022 December 25, 2021 Operating lease right-of-use assets $ 109,977 $ 59,029 Other accrued liabilities $ 15,912 $ 10,065 Long-term operating lease liabilities 98,221 52,443 Total operating lease liabilities $ 114,133 $ 62,508 Weighted average remaining lease term (years) 7.76 7.55 Weighted average discount rate 3.91 % 3.73 %
Summary of Maturities of Operating Lease Liabilities	The following table summarizes the maturities of our lease liabilities for all operating leases as of December 31, 2022: (in thousands) December 31, 2022 2023 $ 19,984 2024 18,714 2025 17,033 2026 16,821 2027 15,611 Thereafter 44,318 Total lease payments 132,481 Less: Imputed interest (18,348) Present value of lease liabilities $ 114,133

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill included the following: (in thousands) December 31, 2022 December 25, 2021 Balance at beginning of period $ 197,332 $ 91,080 Goodwill acquired 247,247 108,945 Measurement period adjustments for Dayton acquisition — (2,130) Foreign currency translation (1,544) (563) Balance at end of period $ 443,035 $ 197,332
Schedule of Intangible Assets	Intangible assets, subject to amortization, included the following: December 31, 2022 December 25, 2021 Intangible assets subject to amortization Weighted Average Amortization Period (years) Gross Carrying Value Accumulated Amortization Net Carrying Value Gross Carrying Value Accumulated Amortization Net Carrying Value (dollars in thousands) Customer relationships 17.0 $ 175,430 $ 21,643 $ 153,787 $ 149,150 $ 12,139 $ 137,011 Trade names 17.4 67,690 6,370 61,320 17,760 2,592 15,168 Product Portfolio 15.6 107,800 2,953 104,847 25,300 460 24,840 Technology 5.7 2,167 820 1,347 2,167 571 1,596 Patents and Other 9.9 1,430 322 1,108 430 236 194 Total $ 354,517 $ 32,108 $ 322,409 $ 194,807 $ 15,998 $ 178,809
Schedule of Estimated Future Amortization Expense	The estimated future amortization expense for intangible assets as of December 31, 2022, is summarized as follows: (in thousands) 2023 $ 21,740 2024 21,740 2025 21,596 2026 21,418 2027 19,924 Thereafter 215,991 Total $ 322,409

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Summary of Mandatory Repayment Provisions	The term loan portion of the New Facility contains mandatory repayment provisions that require quarterly principal amortization payments on the term loan equal to a defined percentage of the initial borrowing amount of $500.0 million as follows, with the balance payable upon maturity in October 2027: Fiscal Quarter Ending Principal Amortization Payment Percentage December 31, 2022 through September 24, 2024 0.625% December 31, 2024 through September 30, 2025 1.250% December 31, 2025 through September 30, 2027 1.875%

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Components of Income Tax Provision (Benefit)	The components of the income tax provision (benefit) are as follows: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Current: Federal $ 31,683 $ 43,374 $ 33,698 State 7,141 5,755 4,276 Foreign 1,708 1,075 491 40,532 50,204 38,465 Deferred: Federal (4,003) (9,609) (8,475) State (1,022) (1,368) (893) Foreign (855) (993) (231) (5,880) (11,970) (9,599) Total $ 34,652 $ 38,234 $ 28,866
Reconciliation of Income Taxes at Statutory Tax Rate to Company's Effective Tax Rate	The following is a reconciliation of income taxes at the statutory tax rate to the Company's effective tax rate: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Federal taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal tax benefit 2.7 2.1 2.0 Research and development tax credit (0.7) (0.4) (0.6) Federal permanent items (0.2) — (0.2) Effect of foreign operations — (0.2) 0.1 Other (0.6) — (1.0) Effective tax rate 22.2 % 22.5 % 21.3 %
Change in Unrecognized Tax Benefits	The following table summarizes the change in unrecognized tax benefits for the three years ended December 31, 2022: For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Balance at beginning of year $ 1,204 $ 1,060 $ 2,301 Reductions due to lapses in statutes of limitations (139) — — Reductions due to tax positions settled — — (1,308) Additions related to positions taken during a prior period 2,136 — — Reductions due to reversals of prior year positions — (30) (202) Additions based on tax positions taken during the current period 655 174 269 Balance at end of year 3,856 1,204 1,060
Reconciliation of Deferred Tax Assets and Liabilities	Deferred income taxes result from timing differences in the recognition of revenue and expense between tax and financial statement purposes. The sources of temporary differences are as follows: (in thousands) December 31, 2022 December 25, 2021 Assets: Inventories $ 13,662 $ 13,689 Accounts receivable 20,446 18,589 Operating lease liability 24,904 14,526 Accrued expenses 12,526 7,515 Net operating losses 1,285 1,892 Foreign tax credits 469 469 State tax credits 403 819 Capital loss carryforward 481 467 Total deferred tax assets 74,176 57,966 Valuation allowance (1,377) (1,837) Net deferred tax assets 72,799 56,129 Liabilities: Depreciation 18,132 14,541 Goodwill and intangible assets 41,693 45,522 Operating lease right of use asset 23,924 13,733 Other 876 309 Gross deferred tax liabilities 84,625 74,105 Net deferred tax (liabilities) assets $ (11,826) $ (17,976)

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Summary of Disaggregated Net Sales	The following tables present our disaggregated net sales by type of major good / product line, and geography. For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Powertrain $ 644,059 $ 539,235 $ 442,221 Chassis 715,005 458,986 324,399 Motor Vehicle Body 314,451 288,599 266,699 Hardware 60,234 58,429 59,429 Net Sales $ 1,733,749 $ 1,345,249 $ 1,092,748 For the Year Ended (in thousands) December 31, 2022 December 25, 2021 December 26, 2020 Net Sales to U.S. Customers $ 1,606,472 $ 1,269,050 $ 1,031,183 Net Sales to Non-U.S. Customers 127,277 76,199 61,565 Net Sales $ 1,733,749 $ 1,345,249 $ 1,092,748

Capital Stock (Tables)

Capital Stock (Tables)	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Schedule of Weighted Average Valuation Assumptions Used to Calculate Fair Value Granted	The following table summarizes the weighted average valuation assumptions used to calculate the fair value of total shareholder return performance-based RSUs granted: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Share price $ 96.36 $ 101.45 $ 61.68 Expected dividend yield 0.0 % 0.0 % 0.0 % Expected stock price volatility 38.3 % 38.9 % 31.5 % Risk-free interest rate 1.6 % 0.2 % 0.9 % Expected life 2.8 years 2.8 years 2.8 years The following table summarizes the weighted average valuation assumptions used to calculate the fair value of options granted and the associated weighted-average grant-date fair values: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Expected dividend yield 0 % 0 % 0 % Expected stock price volatility 34 % 34 % 29 % Risk-free interest rate 1.8 % 0.7 % 0.8 % Expected life of options 5.3 years 5.3 years 5.3 years Weighted-average grant-date fair value $ 32.55 $ 31.68 $ 17.84
Summary of Restricted Stock Awards and Restricted Stock Unit Activity	The following table summarizes our RSA and RSU activity for the three years ended December 31, 2022: Shares Weighted Balance at December 28, 2019 177,491 $ 76.70 Granted 83,875 $ 64.66 Vested (27,477) $ 71.25 Canceled (16,154) $ 76.44 Balance at December 26, 2020 217,735 $ 72.77 Granted 81,694 $ 106.23 Vested (45,970) $ 70.62 Canceled (46,782) $ 74.85 Balance at December 25, 2021 206,677 $ 85.97 Granted 130,131 $ 96.32 Vested (55,255) $ 83.70 Canceled (42,631) $ 85.89 Balance at December 31, 2022 238,922 $ 92.07
Summary of Stock Option Activity	The following table summarizes our stock option activity for the three years ended December 31, 2022: Shares Option Price Weighted Weighted Aggregate Balance at December 28, 2019 181,712 $41.59– $82.94 $ 70.78 Granted 109,352 $61.68 – $83.06 $ 63.25 Exercised (31,521) $41.59 – $82.94 $ 50.77 Canceled (8,764) $61.68 – $74.21 $ 65.24 Balance at December 26, 2020 250,779 $41.59 –$84.93 $ 70.21 Granted 59,578 $95.98 – $103.61 $ 101.36 Exercised (67,504) $41.59 – $82.94 $ 70.04 Canceled (9,457) $61.68 –$101.45 $ 79.02 Balance at December 25, 2021 233,396 $61.68– $103.61 $ 77.85 Granted 79,749 $83.81– $111.53 $ 96.96 Exercised (32,201) $61.68 – $83.06 $ 71.74 Expired (663) $101.45 $ 101.45 Canceled (12,162) $61.68 – $101.45 $ 82.19 Balance at December 31, 2022 268,119 $61.68 – $111.53 $ 84.03 6.2 $ 1,572 Exercisable at December 31, 2022 98,600 $61.68 – $103.61 $ 76.32 3.9 $ 796
Summary of Shares Repurchase and Cancellation	The following table summarizes the repurchase and cancellation of common stock: For the Year Ended December 31, 2022 December 25, 2021 December 26, 2020 Shares repurchased and canceled 23,015 11,452 23,360 Total cost of shares repurchased and canceled (in thousands) $ 2,357 $ 1,172 $ 1,895 Average price per share $ 102.40 $ 102.38 $ 81.12 The following table summarizes the repurchase and cancellation of common stock : For the Years Ended December 31, 2022 December 25, 2021 December 26, 2020 Shares repurchased and canceled 180,750 605,628 439,275 Total cost of shares repurchased and canceled (in thousands) $ 17,577 $ 61,583 $ 36,781 Average price per share $ 97.24 $ 101.68 $ 83.73

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Schedule of Computation of Basic Earnings per Share and Diluted Earnings per Share	The following table sets forth the computation of basic earnings per share and diluted earnings per share: For the Year Ended (in thousands, except per share data) December 31, 2022 December 25, 2021 December 26, 2020 Numerator: Net income $ 121,549 $ 131,532 $ 106,870 Denominator: Weighted average basic shares outstanding 31,434 31,810 32,280 Effect of compensation awards 109 151 93 Weighted average diluted shares outstanding 31,543 31,961 32,373 Earnings Per Share: Basic $ 3.87 $ 4.13 $ 3.31 Diluted $ 3.85 $ 4.12 $ 3.30

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)	Jan. 31, 2020 USD ($)	Jan. 02, 2020
Significant Accounting Policies [Line Items]
Sale of accounts receivable	$ 1,048.7	$ 935.8	$ 740
Factoring costs associated with the sales of accounts receivable	37.2	11.7	13.2
Long-term core inventory	19.8	20.8
Total book value of equity method investments with fair value	9.4	9.4
Income from equity method investments	5.5	4.6	1.3
Carrying book value of cost method investments	$ 5	$ 5
Credit Concentration Risk | Net Accounts Receivable | Four Customer
Significant Accounting Policies [Line Items]
Number of largest customers	4	4
Concentration risk percentage	69%	71%
Supplier Concentration Risk | Products | Foreign Countries
Significant Accounting Policies [Line Items]
Concentration risk percentage	64%	74%
Selling, General and Administrative Expenses
Significant Accounting Policies [Line Items]
Research and development costs	$ 24.8	$ 23.1	$ 20.7
Power Train Industries, Inc.
Significant Accounting Policies [Line Items]
Total book value of equity method investments with fair value				$ 12.3
Business acquisition, percentage of outstanding stock acquired				60%	60%
Minimum
Significant Accounting Policies [Line Items]
Estimated useful life	1 year
Maximum
Significant Accounting Policies [Line Items]
Estimated useful life	39 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Estimated Useful Lives by Major Asset (Detail)	12 Months Ended
	Dec. 31, 2022
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	1 year
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	39 years
Buildings and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Buildings and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	39 years
Machinery, equipment and tooling | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Machinery, equipment and tooling | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Software and computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Software and computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Furniture, fixtures and leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	1 year
Furniture, fixtures and leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	39 years

Business Acquisitions and Inv_3

Business Acquisitions and Investments - Additional Information (Detail) - USD ($) $ in Thousands				12 Months Ended
	Oct. 04, 2022	Aug. 10, 2021	Jan. 02, 2020	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Jan. 31, 2020
Business Acquisition [Line Items]
Business acquisition, purchase price				$ 488,956	$ 345,483	$ 14,808
Net sales				1,733,749	1,345,249	1,092,748
Net income				121,549	131,532	106,870
Business acquisition, measurement period adjustments, increase to goodwill				0	2,130
Goodwill				443,035	197,332	$ 91,080
Power Train Industries, Inc.
Business Acquisition [Line Items]
Equity method investment, ownership percentage			40%			40%
Super ATV, LLC
Business Acquisition [Line Items]
Business acquisition, percentage of outstanding stock acquired	100%
Business acquisition, purchase price	$ 509,600
Business acquisition, net of acquired cash	6,800
Potential earn-out	100,000
Goodwill, potential tax deductible amount				420,300
Business acquisition, net sales				49,600
Business acquisition, net income				2,300
Goodwill	247,247
Fair Value	157,500
Business acquisition, other net assets	3,001
Business acquisition, accounts receivables	3,317
Business acquisition, inventory	$ 90,428
Dayton Parts
Business Acquisition [Line Items]
Business acquisition, percentage of outstanding stock acquired		100%
Business acquisition, purchase price		$ 344,900
Business acquisition, net of acquired cash		$ 8,800
Business acquisition, measurement period adjustments, increase to goodwill					2,100
Business acquisition, measurement period adjustments, decrease in purchase price due to customary net working capital					600
Business acquisition, measurement period adjustments, increase other current liabilities					100
Business acquisition, measurement period adjustments, decrease in deferred tax liabilities					1,600
Business acquisition, net sales					78,000
Business acquisition, net income					$ 0
Goodwill				106,816
Fair Value				160,400
Business acquisition, other net assets				848
Business acquisition, accounts receivables				23,216
Business acquisition, inventory				$ 79,625
Power Train Industries, Inc.
Business Acquisition [Line Items]
Business acquisition, percentage of outstanding stock acquired			60%				60%
Total purchase price			$ 30,700
Business acquisition, value of outstanding stock acquired			18,400
Fair value of previously held equity interest			12,300
Business combination, separately recognized transactions, net gains and losses						$ 2,500
Goodwill			16,700
Fair Value			7,290
Business acquisition, other net assets			6,700
Business acquisition, cash			3,500
Business acquisition, accounts receivables			2,000
Business acquisition, inventory			5,600
Business acquisition, other assets and liabilities net			$ 4,400

Business Acquisitions and Inv_4

Business Acquisitions and Investments - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Oct. 04, 2022	Dec. 25, 2021	Dec. 26, 2020
Business Acquisition [Line Items]
Goodwill	$ 443,035		$ 197,332	$ 91,080
Super ATV, LLC
Business Acquisition [Line Items]
Accounts receivable		$ 3,317
Inventories		90,428
Prepaids and other current assets		5,293
Property, plant and equipment		23,776
Goodwill		247,247
Business acquisition, identified intangibles		157,500
Operating lease right-of-use assets		11,661
Other assets		3,001
Accounts payable		(7,436)
Accrued compensation		(2,086)
Accrued customer rebates and returns		(1,609)
Other current liabilities		(8,726)
Long-term operating lease liabilities		(9,508)
Other long-term liabilities		(3,307)
Net cash consideration		509,551
Super ATV, LLC | Customer relationships
Business Acquisition [Line Items]
Business acquisition, identified intangibles		$ 26,600
Dayton Parts
Business Acquisition [Line Items]
Accounts receivable	23,216
Inventories	79,625
Prepaids and other current assets	2,302
Property, plant and equipment	29,900
Goodwill	106,816
Business acquisition, identified intangibles	160,400
Operating lease right-of-use assets	21,248
Other assets	848
Accounts payable	(11,970)
Accrued compensation	(2,784)
Other current liabilities	(7,604)
Long-term operating lease liabilities	(18,444)
Deferred tax liabilities	(38,665)
Net cash consideration	344,888
Dayton Parts | Customer relationships
Business Acquisition [Line Items]
Business acquisition, identified intangibles	$ 124,100

Business Acquisitions and Inv_5

Business Acquisitions and Investments - Schedule of Valuation of Intangible Assets Acquired and Related Amortization Periods (Details) - USD ($) $ in Thousands			12 Months Ended
	Oct. 04, 2022	Jan. 02, 2020	Dec. 31, 2022
Super ATV, LLC
Business Acquisition [Line Items]
Fair Value	$ 157,500
Super ATV, LLC | Product portfolio
Business Acquisition [Line Items]
Fair Value	$ 82,500
Amortization Period (in years)	15 years
Super ATV, LLC | Trade names
Business Acquisition [Line Items]
Fair Value	$ 48,400
Amortization Period (in years)	20 years
Super ATV, LLC | Customer relationships
Business Acquisition [Line Items]
Fair Value	$ 26,600
Amortization Period (in years)	15 years
Dayton Parts
Business Acquisition [Line Items]
Fair Value			$ 160,400
Dayton Parts | Product portfolio
Business Acquisition [Line Items]
Fair Value			$ 25,300
Amortization Period (in years)			20 years
Dayton Parts | Trade names
Business Acquisition [Line Items]
Fair Value			$ 11,000
Amortization Period (in years)			10 years
Dayton Parts | Customer relationships
Business Acquisition [Line Items]
Fair Value			$ 124,100
Amortization Period (in years)			20 years
Power Train Industries, Inc.
Business Acquisition [Line Items]
Fair Value		$ 7,290
Power Train Industries, Inc. | Trade names
Business Acquisition [Line Items]
Fair Value		$ 700
Amortization Period (in years)		5 years
Power Train Industries, Inc. | Customer relationships
Business Acquisition [Line Items]
Fair Value		$ 4,600
Amortization Period (in years)		15 years
Power Train Industries, Inc. | Technology
Business Acquisition [Line Items]
Fair Value		$ 1,800
Amortization Period (in years)		8 years
Power Train Industries, Inc. | Patents and Other
Business Acquisition [Line Items]
Fair Value		$ 190
Amortization Period (in years)		5 years

Business Acquisitions and Inv_6

Business Acquisitions and Investments - Summary of Unaudited Proforma Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Super ATV, LLC
Business Acquisition [Line Items]
Net sales	$ 1,888,379	$ 1,556,360
Net income	$ 130,375	$ 143,419
Diluted earnings (dollars per share)	$ 4.13	$ 4.49
Dayton Parts
Business Acquisition [Line Items]
Net sales		$ 1,468,415	$ 1,260,077
Net income		$ 147,090	$ 100,334
Diluted earnings (dollars per share)		$ 4.60	$ 3.10

Inventories - Inventories (Deta

Inventories - Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 34,267	$ 12,746
Bulk product	234,871	225,879
Finished product	478,032	287,415
Packaging materials	8,731	5,948
Total	$ 755,901	$ 531,988

Property, Plant and Equipment -

Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Property, Plant and Equipment [Line Items]
Total	$ 357,203	$ 303,561
Less-accumulated depreciation and amortization	(208,726)	(188,697)
Property, plant and equipment, net	148,477	114,864
Buildings
Property, Plant and Equipment [Line Items]
Total	59,980	58,788
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Total	184,184	146,999
Furniture, fixtures and leasehold improvements
Property, Plant and Equipment [Line Items]
Total	12,225	7,303
Software and computer equipment
Property, Plant and Equipment [Line Items]
Total	$ 100,814	$ 90,471

Property, Plant and Equipment_2

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Property, Plant and Equipment [Abstract]
Depreciation and amortization expenses	$ 28.6	$ 26.3	$ 26.6

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Lessee Lease Description [Line Items]
Cash paid for operating leases	$ 16.8	$ 9.2	$ 7.7
Minimum
Lessee Lease Description [Line Items]
Operating lease remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining lease term	11 years

Leases - Summary of Lease Expen

Leases - Summary of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Leases [Abstract]
Operating lease expense	$ 17,340	$ 9,549	$ 7,732
Short-term lease expense	5,838	3,172	3,647
Total lease expense	$ 23,178	$ 12,721	$ 11,379

Leases - Summary of Supplementa

Leases - Summary of Supplemental Balance Sheet Information Related to Operating Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 109,977	$ 59,029
Other accrued liabilities	15,912	10,065
Long-term operating lease liabilities	98,221	52,443
Total operating lease liabilities	$ 114,133	$ 62,508
Weighted average remaining lease term (years)	7 years 9 months 3 days	7 years 6 months 18 days
Weighted average discount rate	3.91%	3.73%
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities

Leases - Summary of Maturities

Leases - Summary of Maturities of Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Leases [Abstract]
2023	$ 19,984
2024	18,714
2025	17,033
2026	16,821
2027	15,611
Thereafter	44,318
Total lease payments	132,481
Less: Imputed interest	(18,348)
Total operating lease liabilities	$ 114,133	$ 62,508

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Goodwill [Roll Forward]
Balance at beginning of period	$ 197,332	$ 91,080
Goodwill acquired	247,247	108,945
Measurement period adjustments for Dayton acquisition	0	(2,130)
Foreign currency translation	(1,544)	(563)
Balance at end of period	$ 443,035	$ 197,332

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 354,517	$ 194,807
Accumulated Amortization	32,108	15,998
Net Carrying Value	$ 322,409	178,809
Customer relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	17 years
Gross Carrying Value	$ 175,430	149,150
Accumulated Amortization	21,643	12,139
Net Carrying Value	$ 153,787	137,011
Trade names
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	17 years 4 months 24 days
Gross Carrying Value	$ 67,690	17,760
Accumulated Amortization	6,370	2,592
Net Carrying Value	$ 61,320	15,168
Product portfolio
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	15 years 7 months 6 days
Gross Carrying Value	$ 107,800	25,300
Accumulated Amortization	2,953	460
Net Carrying Value	$ 104,847	24,840
Technology
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	5 years 8 months 12 days
Gross Carrying Value	$ 2,167	2,167
Accumulated Amortization	820	571
Net Carrying Value	$ 1,347	1,596
Patents and Other
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	9 years 10 months 24 days
Gross Carrying Value	$ 1,430	430
Accumulated Amortization	322	236
Net Carrying Value	$ 1,108	$ 194

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense associated with intangible assets	$ 14.2	$ 6.5	$ 3.4

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Estimated Future Amortization Expense (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
2023	$ 21,740
2024	21,740
2025	21,596
2026	21,418
2027	19,924
Thereafter	215,991
Net Carrying Value	$ 322,409	$ 178,809

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)			12 Months Ended
	Oct. 04, 2022	Aug. 10, 2021	Dec. 31, 2022
Previous Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 100,000,000
Dayton Parts | New Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 600,000,000
Credit facility, expiration date		Aug. 10, 2026
Dayton Parts | Letter of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 60,000,000
Super ATV, LLC | Long-Term Debt
Debt Instrument [Line Items]
Term loan	$ 500,000,000
Super ATV, LLC | Long-Term Debt | Interest Rate Floor
Debt Instrument [Line Items]
Stated percentage	0%
Super ATV, LLC | Base Rate | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	0.50%
Super ATV, LLC | Secured Overnight Financing Rate (SOFR) | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	1.50%
Super ATV, LLC | Maximum | Base Rate | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	1%
Super ATV, LLC | Maximum | Secured Overnight Financing Rate (SOFR) | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	2%
Super ATV, LLC | Minimum | Base Rate | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	0%
Super ATV, LLC | Minimum | Secured Overnight Financing Rate (SOFR) | Long-Term Debt
Debt Instrument [Line Items]
Credit facility, interest rate	100%
Super ATV, LLC | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, commitment fee percentage	0.20%		0.15%
Stated percentage			5.78%
Super ATV, LLC | Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Credit facility, commitment fee percentage	25%
Super ATV, LLC | Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Credit facility, commitment fee percentage	0.125%

Long-Term Debt - Summary of Man

Long-Term Debt - Summary of Mandatory Repayment Provisions (Details) - Super ATV, LLC - Long-Term Debt	Dec. 31, 2022
December 31, 2022 through September 24, 2024
Debt Instrument [Line Items]
Principal Amortization Payment Percentage	0.625
December 31, 2024 through September 30, 2025
Debt Instrument [Line Items]
Principal Amortization Payment Percentage	1.25
December 31, 2025 through September 30, 2027
Debt Instrument [Line Items]
Principal Amortization Payment Percentage	1.875

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) Supplier	Dec. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)
Related Party Transaction [Line Items]
Cash paid for operating leases	$ 16.8	$ 9.2	$ 7.7
Purchases from companies and from PTI prior to full acquisition	24.9	18.9	10.7
Executive Chairman And Certain Of His Family Members
Related Party Transaction [Line Items]
Cash paid for operating leases	$ 2.5	$ 2.3	$ 1.8
Joint Venture
Related Party Transaction [Line Items]
Number of suppliers with company partners Joint Venture | Supplier	1
Minority interests in number of suppliers | Supplier	2
Lewisberry, PA
Related Party Transaction [Line Items]
Lease expiration date	Dec. 31, 2027

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Income Tax Contingency [Line Items]
Net unrecognized tax benefits	$ 3,856	$ 1,204	$ 1,060	$ 2,301
Net operating losses	$ 171,048	$ 171,551	$ 133,373
Federal net operating loss expire period	2036
State net operating loss carryforwards expire period	2037
Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 1,000
Net operating losses	100
State
Income Tax Contingency [Line Items]
Operating loss carryforwards	200
Capital Loss Carryforward
Income Tax Contingency [Line Items]
Valuation allowance, reduction	$ 500

Income Taxes - Components of In

Income Taxes - Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Current:
Federal	$ 31,683	$ 43,374	$ 33,698
State	7,141	5,755	4,276
Foreign	1,708	1,075	491
Current, Total	40,532	50,204	38,465
Deferred:
Federal	(4,003)	(9,609)	(8,475)
State	(1,022)	(1,368)	(893)
Foreign	(855)	(993)	(231)
Deferred, Total	(5,880)	(11,970)	(9,599)
Total	$ 34,652	$ 38,234	$ 28,866

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Taxes at Statutory Tax Rate to Company's Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal taxes at statutory rate	21%	21%	21%
State taxes, net of federal tax benefit	2.70%	2.10%	2%
Research and development tax credit	(0.70%)	(0.40%)	(0.60%)
Federal permanent items	(0.20%)	0%	(0.20%)
Effect of foreign operations	0%	(0.20%)	0.10%
Other	(0.60%)	0%	(1.00%)
Effective tax rate	22.20%	22.50%	21.30%

Income Taxes - Change in Unreco

Income Taxes - Change in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 1,204	$ 1,060	$ 2,301
Reductions due to lapses in statutes of limitations	(139)	0	0
Reductions due to tax positions settled	0	0	(1,308)
Additions related to positions taken during a prior period	2,136	0	0
Reductions due to reversals of prior year positions	0	(30)	(202)
Additions based on tax positions taken during the current period	655	174	269
Balance at end of year	$ 3,856	$ 1,204	$ 1,060

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 25, 2021
Assets:
Inventories	$ 13,662	$ 13,689
Accounts receivable	20,446	18,589
Operating lease liability	24,904	14,526
Accrued expenses	12,526	7,515
Net operating losses	1,285	1,892
Foreign tax credits	469	469
State tax credits	403	819
Capital loss carryforward	481	467
Total deferred tax assets	74,176	57,966
Valuation allowance	(1,377)	(1,837)
Net deferred tax assets	72,799	56,129
Liabilities:
Depreciation	18,132	14,541
Goodwill and intangible assets	41,693	45,522
Operating lease right of use asset	23,924	13,733
Other	876	309
Gross deferred tax liabilities	84,625	74,105
Net deferred tax liabilities	$ (11,826)	$ (17,976)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2022	Dec. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Estimated underpayments of duties amount			$ 2,800
Payment of underpaid duties and interest	$ 2,800
Maximum additional contingent payments to be made		$ 100,000
Fair value of estimated payments		20,000
Contingent consideration charge		1,800
Contingent consideration paid		$ 1,800

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - Customer	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Revenue From Contract With Customer [Line Items]
Maximum credit terms allow to customers	1 year
Number of customers exceeding 10% of net sales	3	3	3
Sales Revenue, Net | Customer Concentration Risk | Three Customer
Revenue From Contract With Customer [Line Items]
Total percentage of sales to customers exceeding 10% of sales	49%	54%	56%
Maximum
Revenue From Contract With Customer [Line Items]
Customer purchase order duration of contract	1 year
Customer pays for good or service future duration	1 year
Expense costs to obtain as incurred, expected period of benefit, amortization period	1 year
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Revenue From Contract With Customer [Line Items]
Revenue, remaining performance obligations for contract, initial term	1 year

Revenue Recognition - Summary o

Revenue Recognition - Summary of Disaggregated Net Sales (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Disaggregation Of Revenue [Line Items]
Net Sales	$ 1,733,749	$ 1,345,249	$ 1,092,748
Net Sales to U.S. Customers
Disaggregation Of Revenue [Line Items]
Net Sales	1,606,472	1,269,050	1,031,183
Net Sales to Non-U.S. Customers
Disaggregation Of Revenue [Line Items]
Net Sales	127,277	76,199	61,565
Powertrain
Disaggregation Of Revenue [Line Items]
Net Sales	644,059	539,235	442,221
Chassis
Disaggregation Of Revenue [Line Items]
Net Sales	715,005	458,986	324,399
Motor Vehicle Body
Disaggregation Of Revenue [Line Items]
Net Sales	314,451	288,599	266,699
Hardware
Disaggregation Of Revenue [Line Items]
Net Sales	$ 60,234	$ 58,429	$ 59,429

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Mar. 31, 2020	May 31, 2017	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding shares owned by controlling family			17%	17%
Shares authorized of undesignated capital stock for future issuance			50,000,000
Authorized number of common stock shares for grant			1,200,000
Date of plan approval			May 16, 2018
Maximum grant period from date of plan approval			10 years
Shares available for grant under the plan			599,845
Weighted-average grant-date fair value (dollars per share)			$ 96.96	$ 101.36	$ 63.25
Compensation cost related to stock options			$ 1,700,000	$ 1,300,000	$ 1,000,000
Cash received from stock option exercises under the plan			$ 1,046,000	2,455,000	1,184,000
Common stock, shares held by 401(K) plan			160,901
Total 401(K) expense			$ 8,200,000	$ 6,300,000	$ 5,700,000
Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchase program shares authorized to be repurchased			$ 600,000,000
Shares available for repurchase under share repurchase program			228,000,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized number of common stock shares for grant		1,000,000
Rate of discount on shares of common stock available for sale to eligible employees		15%
Number of shares purchased			25,600	40,303	79,089
Compensation cost			$ 400,000	$ 900,000	$ 3,300,000
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life						3 years
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	3 years
Performance-based and Time-based RSAs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost related to restricted stock awards and restricted stock units			$ 7,200,000	$ 6,100,000	$ 3,200,000
Performance-based RSAs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value (dollars per share)			$ 111.31	$ 131.02	$ 65.09
RSAs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock options			$ 13,500,000
Unrecognized compensation cost related to unvested stock options, weighted-average period			2 years 3 months 18 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value (dollars per share)			$ 32.55	$ 31.68	$ 17.84
Unrecognized compensation cost related to unvested stock options			$ 3,400,000
Unrecognized compensation cost related to unvested stock options, weighted-average period			2 years 7 months 6 days
Expected life			5 years 3 months 18 days	5 years 3 months 18 days	5 years 3 months 18 days

Capital Stock - Schedule of Wei

Capital Stock - Schedule of Weighted Average Valuation Assumptions - RSAs and RSUs (Detail) - Performance Based RSAs and Performance-Based RSUs - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (dollars per share)	$ 96.36	$ 101.45	$ 61.68
Expected dividend yield	0%	0%	0%
Expected stock price volatility	38.30%	38.90%	31.50%
Risk-free interest rate	1.60%	0.20%	0.90%
Expected life	2 years 9 months 18 days	2 years 9 months 18 days	2 years 9 months 18 days

Capital Stock - Summary of RSA

Capital Stock - Summary of RSA and RSU Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Shares
Beginning balance (in shares)	206,677	217,735	177,491
Granted (in shares)	130,131	81,694	83,875
Vested (in shares)	(55,255)	(45,970)	(27,477)
Canceled (in shares)	(42,631)	(46,782)	(16,154)
Ending balance (in shares)	238,922	206,677	217,735
Weighted Average Fair Value
Beginning balance, weighted average fair value (dollars per share)	$ 85.97	$ 72.77	$ 76.70
Granted, weighted average fair value (dollars per share)	96.32	106.23	64.66
Vested, weighted average fair value (dollars per share)	83.70	70.62	71.25
Cancelled, weighted average fair value (dollars per share)	85.89	74.85	76.44
Ending balance, weighted average fair value (dollars per share)	$ 92.07	$ 85.97	$ 72.77

Capital Stock - Summary of Weig

Capital Stock - Summary of Weighted Average Valuation Assumptions - Options Granted (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value (dollars per share)	$ 96.96	$ 101.36	$ 63.25
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0%	0%	0%
Expected stock price volatility	34%	34%	29%
Risk-free interest rate	1.80%	0.70%	0.80%
Expected life	5 years 3 months 18 days	5 years 3 months 18 days	5 years 3 months 18 days
Weighted-average grant-date fair value (dollars per share)	$ 32.55	$ 31.68	$ 17.84

Capital Stock - Summary of Stoc

Capital Stock - Summary of Stock Option Activity (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Shares
Beginning balance (in shares)	233,396	250,779	181,712
Granted (in shares)	79,749	59,578	109,352
Exercised (in shares)	(32,201)	(67,504)	(31,521)
Expired (in shares)	(663)
Canceled (in shares)	(12,162)	(9,457)	(8,764)
Ending balance (in shares)	268,119	233,396	250,779
Ending balance, exercisable (in shares)	98,600
Option Price per Share
Expired, option price per share (dollars per share)	$ 101.45
Weighted Average Price
Beginning balance, weighted average price (dollars per share)	77.85	$ 70.21	$ 70.78
Granted, weighted average price (dollars per share)	96.96	101.36	63.25
Exercised, weighted average price (dollars per share)	71.74	70.04	50.77
Expired, weighted average price (dollars per share)	101.45
Cancelled, weighted average price (dollars per share)	82.19	79.02	65.24
Ending balance, weighted average price (dollars per share)	84.03	77.85	70.21
Exercisable at December 31, 2022, weighted average price (dollars per share)	$ 76.32
Balance at December 31, 2022, weighted average remaining term (in years)	6 years 2 months 12 days
Exercisable at December 31, 2022 , weighted average remaining term (in years)	3 years 10 months 24 days
Balance at December 31, 2022, aggregate intrinsic value	$ 1,572,000
Exercisable at December 31, 2022, aggregate intrinsic value	$ 796,000
Minimum
Option Price per Share
Beginning balance, option price per share (dollars per share)	$ 61.68	41.59	41.59
Granted, option price per share (dollars per share)	83.81	95.98	61.68
Exercised, option price per share (dollars per share)	61.68	41.59	41.59
Cancelled, option price per share (dollars per share)	61.68	61.68	61.68
Ending balance, option price per share (dollars per share)	61.68	61.68	41.59
Weighted Average Price
Exercisable at December 31, 2022, weighted average price (dollars per share)	61.68
Maximum
Option Price per Share
Beginning balance, option price per share (dollars per share)	103.61	84.93	82.94
Granted, option price per share (dollars per share)	111.53	103.61	83.06
Exercised, option price per share (dollars per share)	83.06	82.94	82.94
Cancelled, option price per share (dollars per share)	101.45	101.45	74.21
Ending balance, option price per share (dollars per share)	111.53	$ 103.61	$ 84.93
Weighted Average Price
Exercisable at December 31, 2022, weighted average price (dollars per share)	$ 103.61

Capital Stock - Summary of Shar

Capital Stock - Summary of Shares Repurchase and Cancellation (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Common Stock Repurchases
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased and canceled (in shares)	23,015	11,452	23,360
Total cost of shares repurchased and canceled (in thousands)	$ 2,357	$ 1,172	$ 1,895
Average price per share (in dollars per share)	$ 102.40	$ 102.38	$ 81.12
Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased and canceled (in shares)	180,750	605,628	439,275
Total cost of shares repurchased and canceled (in thousands)	$ 17,577	$ 61,583	$ 36,781
Average price per share (in dollars per share)	$ 97.24	$ 101.68	$ 83.73

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Earnings Per Share [Abstract]
Stock-based awards considered as anti-dilutive	63,500	14,250	35,975

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Computation of Basic Earnings per Share and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Numerator:
Net income	$ 121,549	$ 131,532	$ 106,870
Denominator:
Weighted average basic shares outstanding (in shares)	31,434	31,810	32,280
Effect of compensation awards (in shares)	109	151	93
Weighted averaged diluted shares outstanding (in shares)	31,543	31,961	32,373
Earnings per share:
Basic (dollars per share)	$ 3.87	$ 4.13	$ 3.31
Diluted (dollars per share)	$ 3.85	$ 4.12	$ 3.30

Business Segments - Additional

Business Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022 USD ($) Segment	Dec. 25, 2021 USD ($)	Dec. 26, 2020 USD ($)
Product Information [Line Items]
Number of reportable operating segment | Segment	1
Property, plant and equipment, net	$ 148,477,000	$ 114,864,000
Net Sales to Non-U.S. Customers
Product Information [Line Items]
Net sales outside of the U.S.	127,300,000	76,200,000	$ 61,600,000
Property, plant and equipment, net	$ 3,600,000	$ 1,000,000

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts
Balance, beginning of period	$ 1,326	$ 1,260	$ 957
Provision	56	177	315
Charge-offs	(19)	(111)	(111)
Acquisitions and other	0	0	99
Balance, end of period	1,363	1,326	1,260
Allowance for Customer Credits [Member]
Valuation and Qualifying Accounts
Balance, beginning of period	188,080	155,751	105,950
Provision	373,157	334,615	308,783
Charge-offs	(369,121)	(302,286)	(258,982)
Balance, end of period	$ 192,116	$ 188,080	$ 155,751