Dorman Products (DORM) 10-K 27 Feb 25 2024 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2024	Feb. 24, 2025	Jun. 28, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
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
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1,965,492,670
Entity Common Stock, Shares Outstanding		30,581,562
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Certain portions of the registrant's definitive proxy statement, in connection with its 2025 Annual Meeting of Shareholders, to be filed with the Securities and Exchange Commission within 120 days after December 31, 2024, are incorporated by reference into PART III of this Annual Report on Form 10-K.
Entity Central Index Key	0000868780
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2024
Auditor Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	Philadelphia, Pennsylvania
Auditor Firm ID	185

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Net sales	$ 2,009,197	$ 1,929,788	$ 1,733,749
Cost of goods sold	1,202,838	1,244,365	1,169,299
Gross profit	806,359	685,423	564,450
Selling, general and administrative expenses	513,450	470,663	393,402
Income from operations	292,909	214,760	171,048
Interest expense, net	39,727	48,061	15,582
Other income, net	3,070	1,804	735
Income before income taxes	256,252	168,503	156,201
Provision for income taxes	66,248	39,244	34,652
Net income	190,004	129,259	121,549
Other comprehensive income:
Change in foreign currency translation adjustment	(4,185)	713	(1,863)
Comprehensive Income	$ 185,819	$ 129,972	$ 119,686
Earnings per share:
Basic (dollars per share)	$ 6.17	$ 4.11	$ 3.87
Diluted (dollars per share)	$ 6.14	$ 4.10	$ 3.85
Weighted average shares outstanding:
Basic (in shares)	30,797	31,455	31,434
Diluted (in shares)	30,956	31,533	31,543

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 57,137	$ 36,814
Accounts receivable, less allowance for doubtful accounts of $1,619 and $3,518	573,787	526,867
Inventories	707,977	637,375
Prepaids and other current assets	30,859	32,653
Total current assets	1,369,760	1,233,709
Property, plant and equipment, net	164,499	160,113
Operating lease right-of-use assets	118,499	103,476
Goodwill	442,886	443,889
Intangible assets, net	278,213	301,556
Deferred tax assets	5,786	0
Other assets	44,878	49,664
Total assets	2,424,521	2,292,407
Current liabilities:
Accounts payable	231,814	176,664
Accrued compensation	44,002	23,971
Accrued customer rebates and returns	204,355	204,495
Revolving credit facility	13,960	92,760
Current portion of long-term debt	28,125	15,625
Other accrued liabilities	41,546	33,636
Total current liabilities	563,802	547,151
Long-term debt	439,513	467,239
Long-term operating lease liabilities	105,142	91,262
Deferred tax liabilities	3,700	8,925
Other long-term liabilities	18,894	9,627
Commitments and contingencies (Note 11)
Shareholders' equity:
Common stock, par value $0.01; authorized 50,000,000 shares; issued and outstanding 30,565,855 and 31,299,770 shares in 2024 and 2023, respectively	306	313
Additional paid-in capital	119,077	101,045
Retained earnings	1,180,862	1,069,435
Accumulated other comprehensive loss	(6,775)	(2,590)
Total shareholders' equity	1,293,470	1,168,203
Total liabilities and shareholders' equity	$ 2,424,521	$ 2,292,407

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 1,619	$ 3,518
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	30,565,855	31,299,770
Common stock, shares outstanding (in shares)	30,565,855	31,299,770

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. 25, 2021		31,607,509
Beginning balance at Dec. 25, 2021	$ 932,736	$ 316	$ 77,451	$ 856,409	$ (1,440)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
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 (in shares) at Dec. 31, 2022		31,430,632
Ending balance at Dec. 31, 2022	1,042,631	$ 314	88,750	956,870	(3,303)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		17,489
Exercise of stock options	1,167		1,167
Compensation expense under incentive stock plan	11,484		11,484
Purchase and cancellation of common stock (in shares)		(215,410)
Purchase and cancellation of common stock	(16,493)	$ (2)	(387)	(16,104)
Issuance of non-vested stock, net of cancellations (in shares)		93,437
Issuance of non-vested stock, net of cancellations	1,986	$ 1	1,985
Other stock-related activity, net of tax (in shares)		(26,378)
Other stock-related activity, net of tax	(2,544)		(1,954)	(590)
Other comprehensive loss	713				713
Net income	$ 129,259			129,259
Ending balance (in shares) at Dec. 31, 2023	31,299,770	31,299,770
Ending balance at Dec. 31, 2023	$ 1,168,203	$ 313	101,045	1,069,435	(2,590)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		63,605
Exercise of stock options	4,712		4,711
Compensation expense under incentive stock plan	15,012		15,012
Purchase and cancellation of common stock (in shares)		(874,428)
Purchase and cancellation of common stock	(80,027)	$ (9)	(1,574)	(78,444)
Issuance of non-vested stock, net of cancellations (in shares)		100,778
Issuance of non-vested stock, net of cancellations	2,121	$ 1	2,120
Other stock-related activity, net of tax (in shares)		(23,870)
Other stock-related activity, net of tax	(2,370)		(2,237)	(133)
Other comprehensive loss	(4,185)				(4,185)
Net income	$ 190,004			190,004
Ending balance (in shares) at Dec. 31, 2024	30,565,855	30,565,855
Ending balance at Dec. 31, 2024	$ 1,293,470	$ 306	$ 119,077	$ 1,180,862	$ (6,775)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Flows from Operating Activities:
Net income	$ 190,004	$ 129,259	$ 121,549
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization, and accretion	56,700	54,729	44,677
Provision for doubtful accounts	90	4,592	86
Benefit from deferred income taxes	(10,838)	(2,960)	(5,880)
Provision for stock-based compensation	15,012	11,484	9,370
Fair value adjustment to contingent consideration	0	(20,468)	0
Payment of contingent consideration	0	0	(120)
Changes in assets and liabilities:
Accounts receivable	(47,232)	(104,020)	48,479
Inventories	(72,087)	118,606	(133,790)
Prepaids and other current assets	(4,866)	15,324	(11,150)
Other assets	796	(4,931)	(28)
Accounts payable	55,713	(3,138)	(5,542)
Accrued customer rebates and returns	(120)	12,372	2,433
Accrued compensation and other liabilities	47,875	(2,091)	(28,396)
Cash provided by operating activities	231,047	208,758	41,688
Cash Flows from Investing Activities:
Acquisitions, net of divestitures	100	67	(488,956)
Property, plant and equipment additions	(39,421)	(43,968)	(37,883)
Cash used in investing activities	(39,321)	(43,901)	(526,839)
Cash Flows from Financing Activities:
Proceeds of revolving credit line	0	0	10,000
Payments of revolving credit line	(78,800)	(146,600)	(10,000)
Proceeds of long-term debt	0	0	500,000
Payments of long-term debt	(15,625)	(12,500)	(3,125)
Payment of deferred acquisition consideration	(200)	0	0
Payment of contingent consideration	0	0	(1,705)
Payment of debt issuance costs	0	0	(3,918)
Proceeds from exercise of stock options	4,711	1,167	1,046
Purchase and cancellation of common stock	(80,811)	(15,709)	(19,934)
Other stock-related activity	(254)	(467)	132
Cash (used in) provided by financing activities	(170,979)	(174,109)	472,496
Effect of exchange rate changes on Cash and Cash Equivalents	(424)	32	(93)
Net Increase (Decrease) in Cash and Cash Equivalents	20,323	(9,220)	(12,748)
Cash and Cash Equivalents, Beginning of Period	36,814	46,034	58,782
Cash and Cash Equivalents, End of Period	57,137	36,814	46,034
Supplemental Cash Flow Information
Cash paid for interest expense	38,713	49,507	11,647
Cash paid for income taxes	$ 56,705	$ 35,465	$ 62,861

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2024
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). We operate through three business segments: Light Duty, Heavy Duty, and Specialty Vehicle, consistent with the sectors of the motor vehicle aftermarket industry in which we operate. For more information on our segments, refer to Note 8, "Segment Information," to the Consolidated Financial Statements. 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. Sales of accounts receivable under these agreements, and related factoring costs, which were included in selling, general and administrative expenses, were as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Sales of accounts receivable $ 1,106,400 $ 949,517 $ 1,048,671 Factoring costs $ 51,252 $ 50,231 $ 37,188 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 (or if the Company elects to not perform Step 0), then we would perform a quantitative test (“Step 1”) to determine whether an impairment charge was necessary. During 2023 and 2024, we elected to perform a Step 1 test of our goodwill for the purpose of assessing goodwill for impairment. For both the years ended December 31, 2024 and 2023, we determined that goodwill was not impaired. Purchase Accounting . The purchase price of an acquired business is allocated to the underlying tangible and intangible assets acquired and liabilities assumed based on 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 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 a customer. Customers and end-users will generally return used cores to us, which we then use in the remanufacturing process to make another finished good. Core inventory was $15.4 million and $20.0 million as of December 31, 2024 and 2023, respectively, and is classified as long-term 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 $11.2 million and $10.8 million at December 31, 2024 and 2023, respectively. These investments provided $5.3 million, $5.7 million, and $5.5 million of income during the year ended December 31, 2024, 2023, and 2022, respectively. 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, 2024 and 2023. 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 when performance obligations under the terms of a contract with a customer are satisfied, in an amount representing the consideration the Company expects to receive in exchange for selling products to its customers. 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. The provision for Customer Credits is estimated based on contractual provisions, historical experience, and our assessment of current market conditions and includes various assumptions including, but not limited to, the length of time between when a sale occurs and a credit is issued. 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 $32.1 million, $32.3 million, and $24.8 million have been recorded in selling, general and administrative expenses in the Consolidated Statements of Operations for the years ended December 31, 2024, 2023, and 2022, respectively. Stock-Based Compensation . At December 31, 2024, we had awards outstanding under a stock-based employee compensation plan, which is described more fully in Note 13, "Capital Stock." We record compensation expense for all awards granted. The value of time-based restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) issued was based on the fair value of our common stock on the grant date. The fair value of performance-based RSUs, for which the performance measure is total shareholder return relative to a defined peer group, is determined using a Monte Carlo simulation model. The fair value of performance-based RSUs for which the performance measure is return on invested capital over the performance period was based on the fair value of our common stock on the grant date. 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 78% and 74% of net accounts receivable as of December 31, 2024 and 2023, respectively. We continually monitor the credit terms and credit limits for these and other customers. For the years ended December 31, 2024 and 2023, approximately 72% and 70%, respectively, of our products were purchased from suppliers in a variety of non-U.S. countries, with the largest portion of our overseas purchases being made in 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. Recent Accounting Pronouncements. In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07, Improvements to Reportable Segment Disclosures. The ASU requires additional disclosures about reportable segments’ significant expenses on an interim and annual basis. The ASU was effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 on a retrospective basis. We adopted this guidance for our annual report on Form 10-K for the year ended December 31, 2024 and applied the amendments retrospectively to all prior periods presented. The disclosures for interim periods will be adopted in our fiscal year beginning on January 1, 2025. The adoption of this standard did not have a material impact on our results of operations or financial condition. See Note 8, "Segment Information," for further details on segment information. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. The ASU expands disclosures in the income tax rate reconciliations table and cash taxes paid and is effective for annual periods beginning after December 15, 2024. In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses. The ASU requires additional disclosures about categories of expenses, including, among other things, quantitative disclosures for employee compensation, depreciation, intangible asset amortization, selling expenses, and purchases of inventory. The updated guidance is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods within annual reporting periods beginning after December 15, 2027. We expect to implement these new standards by their effective dates, and do not expect their adoption to have an impact on our results of operations, financial condition or cash flows.

Business Acquisitions and Inves

Business Acquisitions and Investments	12 Months Ended
	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Business Acquisitions and Investments	Business Acquisitions and Investments Super ATV, LLC (“SuperATV”) On October 4, 2022, Dorman acquired 100% of the issued and outstanding equity interests of SuperATV (the “Transaction”), for aggregate consideration of $509.8 million (net of $6.8 million cash acquired), plus a potential earn-out payment to the sellers of SuperATV not to exceed $100 million in the aggregate, subject to the achievement by SuperATV of certain revenue and gross margin targets in the years ended December 31, 2023 and December 31, 2024. See Note 11, "Commitments and Contingencies," for additional information on contingent consideration associated with the Transaction. In the year ended December 31, 2023, we received $0.3 million in cash as proceeds from the closing net working capital adjustments. 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, "Long-Term Debt." 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. Our purchase price allocation for SuperATV assets acquired and liabilities assumed was complete as of September 30, 2023. 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 247,474 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 509,778 The financial results of the Transaction have been included in the consolidated financial statements from the date of acquisition. The net sales and net income of SuperATV included in the consolidated financial statements for the 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, 2021 the beginning of the fiscal 2022 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, except per share data, unaudited) December 31, 2022 Net sales $ 1,888,379 Net income $ 130,375 Diluted earnings per share $ 4.13 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 remove acquisition-related transaction costs.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories were as follows : December 31, (in thousands) 2024 2023 Raw materials $ 29,233 $ 29,750 Bulk product 246,604 211,805 Finished product 421,734 387,668 Packaging materials 10,406 8,152 Total $ 707,977 $ 637,375

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment include the following: December 31, (in thousands) 2024 2023 Buildings $ 67,040 $ 62,434 Machinery, equipment, and tooling 223,807 208,086 Furniture, fixtures, and leasehold improvements 18,390 17,083 Software and computer equipment 127,578 113,148 Total 436,815 400,751 Less-accumulated depreciation and amortization (272,316) (240,638) Property, plant and equipment, net $ 164,499 $ 160,113 Depreciation and amortization expenses associated with property, plant, and equipment were $34.0 million, $31.9 million, and $28.6 million in the years ended December 31, 2024, 2023, and 2022, respectively. Net property, plant and equipment outside the United States was $4.6 million and $4.3 million as of December 31, 2024 and 2023, respectively.

Leases

Leases	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leases	Leases We 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 9 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, 2024 or 2023. 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, 2024 and 2023, there were no material variable lease costs or sublease income. Cash paid for operating leases was $22.8 million, $21.2 million, and $16.8 million during the years ended December 31, 2024, 2023, and 2022, respectively, which is classified in operating activities on the Consolidated Statements of Cash Flows. The following table summarizes the lease expense: For the Year Ended December 31, (in thousands) 2024 2023 2022 Operating lease expense $ 23,926 $ 21,747 $ 17,340 Short-term lease expense 4,159 7,169 5,838 Total lease expense $ 28,085 $ 28,916 $ 23,178 Supplemental balance sheet information related to our operating leases is as follows: December 31, (in thousands) 2024 2023 Operating lease right-of-use assets $ 118,499 $ 103,476 Other accrued liabilities $ 19,717 $ 16,917 Long-term operating lease liabilities 105,142 91,262 Total operating lease liabilities $ 124,859 $ 108,179 Weighted average remaining lease term (years) 6.33 6.85 Weighted average discount rate 5.09 % 4.20 % The following table summarizes the maturities of our lease liabilities for all operating leases as of December 31, 2024: (in thousands) 2025 $ 25,090 2026 25,820 2027 24,095 2028 17,864 2029 15,915 Thereafter 37,215 Total lease payments 145,999 Less: Imputed interest (21,140) Present value of lease liabilities $ 124,859

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill Goodwill included the following: (in thousands) Light Duty Heavy Duty Specialty Vehicle Consolidated Balance at December 31, 2022 $ — $ — $ — $ 443,035 Measurement period adjustments — — — 233 Foreign currency translation — — — 621 Reporting unit reorganization 313,704 57,876 72,309 — Balance at December 31, 2023 313,704 57,876 72,309 443,889 Goodwill acquired — — 1,167 1,167 Foreign currency translation — (2,170) — (2,170) Balance at December 31, 2024 $ 313,704 $ 55,706 $ 73,476 $ 442,886 Intangible Assets Intangible assets, subject to amortization, included the following: December 31, 2024 2023 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 15.4 $ 173,430 $ 41,358 $ 132,072 $ 175,430 $ 31,678 $ 143,752 Trade names 14.1 67,690 14,999 52,691 67,690 10,676 57,014 Product Portfolio 13.7 107,800 16,522 91,278 107,800 9,720 98,080 Technology 3.8 2,167 1,318 849 2,167 1,069 1,098 Patents and Other 7.3 2,350 1,027 1,323 2,230 618 1,612 Total $ 353,437 $ 75,224 $ 278,213 $ 355,317 $ 53,761 $ 301,556 Amortization expense associated with intangible assets was $22.8 million, $22.1 million, and $14.2 million in the years ended December 31, 2024, 2023, and 2022, respectively. The estimated future amortization expense for intangible assets as of December 31, 2024 is summarized as follows: (in thousands) 2025 $ 21,649 2026 20,492 2027 20,081 2028 19,856 2029 19,770 Thereafter 176,365 Total $ 278,213

Long-Term Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt We have a credit agreement which consists of a $600.0 million revolving credit facility and a $500.0 million term loan. The credit agreement matures on October 4, 2027, is guaranteed by the Company’s material domestic subsidiaries , and is supported by a security interest in substantially all of the Company’s material domestic subsidiaries’ personal property and assets, subject to certain exceptions . Borrowings under the credit agreement bear interest at a rate per annum equal to, at our option, either a term Secured Overnight Financing Rate (“Term SOFR”) or a base rate (as defined in the credit agreement), in each case plus an applicable margin, based on the Total Net Leverage Ratio (as defined in the credit agreement). Unutilized revolving credit facility capacity incurs a commitment fee based on the Total Net Leverage Ratio (as defined in the credit agreement). As of December 31, 2024, the interest rate on the outstanding borrowings under the credit agreement was 5.71% and the commitment fee was 0.15%. The term loan portion of the credit agreement contains mandatory repayment provisions that require quarterly principal amortization payments. The following table presents the principal amortization payments and maturities on the term loan for each of the years noted, as of December 31, 2024: (in thousands) December 31, 2024 2025 $ 28,125 2026 37,500 2027 403,125 Total $ 468,750 Long-term debt on the consolidated balance sheets is presented net of unamortized debt issuance costs, which totaled $1.1 million and $1.5 million as of December 31, 2024 and 2023, respectively. The credit agreement 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 credit agreement. As of December 31, 2024, we were not in default of the covenants contained in the credit agreement.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information We operate and report our results in three business segments, Light Duty, Heavy Duty, and Specialty Vehicle, consistent with the three sectors of the motor vehicle aftermarket industry in which we participate. The Light Duty segment designs and markets replacement parts and fasteners primarily for passenger cars and light trucks with sales to retailers and wholesale distributors who primarily serve passenger car and light truck customers. The Heavy Duty segment designs and markets replacement parts primarily for medium and heavy trucks with sales to independent distributors, independent component specialists and rebuilders, and auto parts stores that focus on the heavy-duty market. The Specialty Vehicle segment designs, markets, and manufactures aftermarket parts and accessories for the powersports market with sales through direct-to-consumer, dealers, and installers. The Company's chief operating decision maker ("CODM") is the chief executive officer. The CODM uses income from operations to assess segment performance. The CODM utilizes this measure for each segment in the annual budget and forecasting cycles and considers performance against established targets for purposes of allocating Company resources to each segment and in the determination of compensation for certain Contributors. We measure segment income from operations based on income from operations excluding acquisition-related intangible assets amortization, acquisition-related transaction and other costs, and other special charges. Corporate expenses are allocated to the segments based on segment net sales as a percentage of consolidated net sales. Segment assets consist of inventories, accounts receivable, and property, plant and equipment, net. Intersegment sales are not material. Segment results are as follows: For the Year Ended December 31, 2024 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,565,601 $ 231,515 $ 212,081 $ 2,009,197 Cost of goods sold 925,319 171,732 104,994 1,202,045 Factoring expense 51,252 — — 51,252 Other segment expenses 304,866 53,303 74,752 432,921 Segment income from operations $ 284,164 $ 6,480 $ 32,335 $ 322,979 Segment assets $ 1,203,165 $ 157,493 $ 85,606 $ 1,446,264 Depreciation $ 26,485 $ 3,725 $ 3,750 $ 33,960 Capital expenditures $ 34,164 $ 2,421 $ 2,836 $ 39,421 For the Year Ended December 31, 2023 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,462,474 $ 256,913 $ 210,401 $ 1,929,788 Cost of goods sold 928,983 192,729 110,840 1,232,552 Factoring expense 50,231 — — 50,231 Other segment expenses 296,101 49,679 67,943 413,723 Segment income from operations $ 187,159 $ 14,505 $ 31,618 $ 233,282 Segment assets $ 1,083,347 $ 162,583 $ 78,424 $ 1,324,354 Depreciation $ 25,239 $ 3,239 $ 3,420 $ 31,898 Capital expenditures $ 33,445 $ 3,581 $ 6,942 $ 43,968 For the Year Ended December 31, 2022 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,425,892 $ 258,215 $ 49,642 $ 1,733,749 Cost of goods sold 949,918 183,233 25,078 1,158,229 Factoring expense 37,188 — — 37,188 Other segment expenses 269,207 45,244 16,027 330,478 Segment income from operations $ 169,579 $ 29,738 $ 8,537 $ 207,854 Segment assets $ 1,047,987 $ 177,557 $ 106,219 $ 1,331,763 Depreciation $ 25,062 $ 2,772 $ 798 $ 28,632 Capital expenditures $ 31,682 $ 4,769 $ 1,432 $ 37,883 In the preceding segment tables, Other segment expenses consist of selling, general and administrative expenses including salaries and benefits for product development, research, sales, marketing and administrative functions, facility costs, information technology costs, and other general expenses. A reconciliation of segment income from operations to consolidated income before income taxes is as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Segment income from operations $ 322,979 $ 233,282 $ 207,854 Acquisition-related intangible assets amortization (22,476) (21,817) (14,070) Acquisition-related transaction and other costs (2,621) (15,373) (22,736) Fair value adjustment to contingent consideration — 20,469 — Executive transition services expenses — (1,801) — Pretax reduction in workforce costs (4,973) — — Interest expense, net (39,727) (48,061) (15,582) Other income, net 3,070 1,804 735 Consolidated income before income taxes $ 256,252 $ 168,503 $ 156,201 A reconciliation of segment assets to consolidated assets is as follows: December 31, (in thousands) 2024 2023 2022 Segment assets $ 1,446,264 $ 1,324,354 $ 1,331,763 Other current assets 87,968 69,468 85,834 Other non-current assets 890,289 898,585 924,189 Consolidated assets $ 2,424,521 $ 2,292,407 $ 2,341,786

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Prior to December 1, 2023, we leased our Colmar, PA facility from an entity in which Steven Berman, our Non-Executive Chairman, and certain of his family members are owners. On December 1, 2023, the Colmar facility was sold to a third party, subject to our lease. We also lease a portion of our Lewisberry, PA facility from an entity in which Mr. Berman and certain of his family members are owners. The Colmar lease was, and the Lewisberry lease is, a non-cancelable operating lease. The Lewisberry lease expires December 31, 2027. We also lease our facilities in Madison, IN, and Shreveport, LA, from entities in which Lindsay Hunt, our President, Specialty Vehicle, and certain of her family members are owners. Each lease is a non-cancelable operating lease, was renewed in October 2022 in connection with the acquisition of Super ATV, LLC, a leading supplier to the powersports aftermarket ("SuperATV"), and will expire on October 31, 2027. We have service agreements with counterparties that are majority-owned by a family member of Ms. Hunt. These agreements provide for various warehouse and facility-related services at agreed-upon rates. The following table represents the total payments for the years ended December 31, 2024, 2023, and 2022, under the related party agreements described above: For the Year Ended December 31, (in thousands) 2024 2023 2022 Facility leases with Steven Berman-related entities $ 715 $ 2,918 $ 2,458 Facility leases with Lindsay Hunt-related entities $ 2,757 $ 2,603 $ 519 Service agreements with Lindsay Hunt-related entities $ 54 $ 200 $ 67 We are a partner in a joint venture with one of our suppliers and own a minority interest in two other suppliers. Aggregate purchases from both of these companies were $18.4 million, $22.7 million, and $24.9 million in the years ended December 31, 2024, 2023, and 2022, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of the provision for income taxes are as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Current: Federal $ 56,879 $ 34,600 $ 31,683 State 17,907 5,602 7,141 Foreign 2,300 2,002 1,708 77,086 42,204 40,532 Deferred: Federal (7,407) (1,936) (4,003) State (2,618) (338) (1,022) Foreign (813) (686) (855) (10,838) (2,960) (5,880) Provision for income taxes $ 66,248 $ 39,244 $ 34,652 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, 2024 2023 2022 Federal taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal tax benefit 2.4 2.1 2.5 Uncertain tax positions 2.9 0.2 0.3 Research and development tax credit (0.5) (0.7) (0.7) Federal permanent items — 0.3 (0.2) Effect of foreign operations 0.1 0.3 — Other — 0.1 (0.7) Effective tax rate 25.9 % 23.3 % 22.2 % At December 31, 2024, we had $10.3 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: For the Year Ended December 31, (in thousands) 2024 2023 2022 Balance at beginning of year $ 4,539 $ 3,856 $ 1,204 Reductions due to lapses in statutes of limitations (174) (716) (139) Reductions due to tax positions settled (180) — — Additions related to positions taken during a prior period — — 2,136 Reductions due to reversals of prior year positions (1,125) — — Additions based on tax positions taken during the current period 7,253 1,399 655 Balance at end of year 10,313 4,539 3,856 We recognize interest and penalties related to unrecognized tax benefits in income tax expense. The total amount of interest and penalties related to unrecognized tax benefits recorded within tax expense was $3.1 million for the year ended December 31, 2024, and was immaterial for the year ended December 31, 2023. As of December 31, 2024, accrued interest and penalties related to unrecognized tax benefits were $3.5 million. 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: December 31, (in thousands) 2024 2023 Assets: Inventories $ 15,111 $ 17,829 Accounts receivable 24,723 20,472 Operating lease liability 31,850 26,261 Accrued expenses 10,932 7,002 Capitalized research and development expenses 16,840 12,263 Net operating losses 295 289 Foreign tax credits 469 469 State tax credits 427 379 Capital loss carryforward 474 478 Total deferred tax assets 101,121 85,442 Valuation allowance (1,429) (1,354) Net deferred tax assets 99,692 84,088 Liabilities: Depreciation 12,938 16,481 Goodwill and intangible assets 52,564 49,798 Operating lease right of use asset 30,146 25,142 Other 1,958 1,592 Gross deferred tax liabilities 97,606 93,013 Net deferred tax assets (liabilities) $ 2,086 $ (8,925) 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 2024, we increased the valuation allowance against the deferred tax assets noted above by an immaterial amount. As of December 31, 2024, the Company has tax-effected net operating loss carryforwards of $0.2 million and $0.1 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, 2024
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. Acquisitions. We have contingent consideration related to prior acquisitions 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 acquisitions are fully achieved, the maximum additional contingent payments to be made under the transaction documents would be $102.0 million in the aggregate. As of December 31, 2024 and December 31, 2023, we estimated that zero payments are expected to become due in connection with the acquisitions, and therefore accrued no liability. For the year ended December 31, 2023, we recorded a net decrease of $20.0 million to the contingent consideration liability for a prior acquisition, comprising a $20.5 million decrease in fair value based on the modeling of a range of performance outcomes relative to the achievement of targets established in the purchase agreement, partially offset by $0.5 million of accretion on the liability resulting from the passage of time. The net benefit was included in selling, general and administrative expenses in the Condensed Consolidated Statements of Operations. 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 administrative expenses in the Condensed Consolidated Statements of Operations. 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, 2024
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 that 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 when performance obligations under the terms of a contract with a customer are satisfied, in an amount representing the consideration the Company expects to receive in exchange for selling products to its customers. 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 the years ended December 31, 2024, 2023, and 2022. 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: • Do 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 For disaggregation of net sales by operating segments, refer to Note 8, "Segment Information", to the Consolidated Financial Statements. The following table presents our disaggregated net sales by geography. For the Year Ended December 31, (in thousands) 2024 2023 2022 Net Sales to U.S. Customers $ 1,848,420 $ 1,772,092 $ 1,606,472 Net Sales to Non-U.S. Customers 160,777 157,696 127,277 Net Sales $ 2,009,197 $ 1,929,788 $ 1,733,749 During the year ended December 31, 2024, two customers each accounted for more than 10% of net sales, and for the years ended December 31, 2023 and 2022, three customers each accounted for more than 10% of net sales. In the aggregate, these customers accounted for 39%, 44%, and 49% of net sales in the years ended December 31, 2024, 2023, and 2022, respectively. Sales to these customers are included in the Light Duty segment.

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Capital Stock	Capital Stock Controlling Interest by Officers, Directors and Family Members . As of December 31, 2024 and 2023, Steven Berman, the Non-Executive Chairman of the Company, and members of his family beneficially owned approximately 15% and 16%, respectively, 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 on or before the tenth anniversary 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, 2024, 329,263 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. Compensation cost related to those performance-based RSAs 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 (market condition). For those awards containing a market condition, 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. We issue 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. Performance-based RSUs granted starting in the year ended December 31, 2024 included certain grants that vest based on our total shareholder return ranking relative to the Nasdaq US Benchmark Auto Parts Index over a three-year performance period (market condition), and other grants that vest based upon achievement of return on invested capital targets over a three-year performance period (performance condition). For performance-based RSUs with a market condition, 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. For performance-based RSUs with a performance condition, compensation cost 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 following table summarizes the weighted average valuation assumptions used to calculate the fair value of total shareholder return performance-based RSUs containing a market condition granted: For the Year Ended December 31, 2024 2023 2022 Share price $ 90.47 $ 91.28 $ 96.36 Expected dividend yield 0.0 % 0.0 % 0.0 % Expected stock price volatility 33.4 % 32.8 % 38.3 % Risk-free interest rate 4.4 % 4.6 % 1.6 % 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 interest 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 the RSUs containing a market condition granted during the years ended December 31, 2024, 2023, and 2022, were $138.58, $113.15, and $111.31, respectively. Compensation cost related to performance-based and time-based RSAs and RSUs was $12.3 million, $9.1 million, and $7.2 million in the years ended December 31, 2024, 2023, and 2022, respectively, and was included in selling, general and administrative expenses in the Consolidated Statements of Operations. No cost was capitalized during the years ended December 31, 2024, 2023, and 2022. The following table summarizes our RSA and RSU activity for the three years ended December 31, 2024: Shares Weighted 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 Granted 112,893 $ 95.34 Vested (73,169) $ 80.63 Canceled (21,092) $ 85.00 Balance at December 31, 2023 257,554 $ 97.33 Granted 188,620 $ 99.08 Vested (75,305) $ 89.84 Canceled (30,291) $ 111.29 Balance at December 31, 2024 340,578 $ 97.84 As of December 31, 2024, there was approximately $18.4 million of unrecognized compensation cost related to unvested RSUs, which is expected to be recognized over a weighted-average period of approximately 1.9 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 $1.6 million, $2.0 million, and $1.7 million in the years ended December 31, 2024, 2023, and 2022, respectively, and was included in selling, general and administrative expense in the Consolidated Statements of Operations. No cost was capitalized during the years ended December 31, 2024, 2023, and 2022. 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. There were no stock options granted in 2024. 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, 2023 2022 Expected dividend yield 0 % 0 % Expected stock price volatility 35 % 34 % Risk-free interest rate 4.3 % 1.8 % Expected life of options 5.3 years 5.3 years Weighted-average grant-date fair value $ 35.93 $ 32.55 The following table summarizes our stock option activity for the three years ended December 31, 2024: Shares Option Price Weighted Weighted Aggregate 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 Canceled (12,162) $61.68 – $101.45 $ 82.19 Balance at December 31, 2022 268,119 $61.68 –$111.53 $ 84.03 Granted 79,404 $86.63 – $91.28 $ 91.13 Exercised (24,297) $61.68 – $82.94 $ 72.33 Expired (7,488) $81.91 – $101.45 $ 91.24 Canceled (4,521) $82.94– $101.45 $ 88.52 Balance at December 31, 2023 311,217 $61.68– $111.53 $ 86.52 Exercised (65,180) $61.68 – $111.53 $ 74.34 Expired (7,228) $91.28 – $101.45 $ 94.71 Canceled (4,520) $91.28 – $101.45 $ 97.64 Balance at December 31, 2024 234,289 $61.68 – $111.53 $ 89.44 4.6 $ 9,398 Exercisable at 135,471 $61.68 – $103.61 $ 85.73 3.9 $ 5,936 As of December 31, 2024, there was approximately $2.1 million of unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of approximately 1.9 years. Cash received from option exercises was $4.7 million, $1.2 million, and $1.0 million in the years ended December 31, 2024, 2023, and 2022, respectively. The tax benefit generated from option exercises was immaterial for all periods presented. Employee Stock Purchase Plan. 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. The two purchase windows are January to June and July to December. There were 28,674 shares, 29,650 shares, and 25,600 shares purchased under this plan during the years ended December 31, 2024, 2023, and 2022, respectively. Compensation cost under the ESPP plan was $1.1 million, $0.4 million, and $0.4 million in the years ended December 31, 2024, 2023, and 2022, respectively. The tax benefit generated from ESPP purchases was immaterial in the years ended December 31, 2024, 2023, and 2022, 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, 2024 2023 2022 Shares repurchased and canceled 18,457 13,778 23,015 Total cost of shares repurchased and canceled (in thousands) $ 1,935 $ 1,160 $ 2,357 Average price per share $ 104.86 $ 84.22 $ 102.40 At December 31, 2024, the 401(k) Plan held 128,666 shares of our common stock. Share Repurchase Program . Our Board of Directors previously authorized a share repurchase program. Under that program, and subsequent authorizations (the “Existing Program”), the Board authorized the repurchase of up to $600 million of our outstanding common stock through December 31, 2024. At December 31, 2024, $134.6 million was available for repurchase under this program. The Existing Program expired on December 31, 2024, along with all amounts that remained available for use under the Existing Program as of that date. In October 2024, the Company’s Board of Directors authorized the purchase of up to $500 million of our common stock under a new share repurchase program effective as of January 1, 2025 through December 31, 2027 (the “New Program”). The New Program will operate just as the Existing Program had operated in that share repurchases may be made from time to time depending on market conditions, share price, share availability, and other factors at the Company’s discretion. The New Program, similar to the Existing Program, will not obligate the Company to acquire any specific number of shares. The following table summarizes the repurchase and cancellation of common stock : For the Year Ended December 31, 2024 2023 2022 Shares repurchased and canceled 855,971 201,632 180,750 Total cost of shares repurchased and canceled (in thousands) $ 78,091 $ 15,333 $ 17,577 Average price per share $ 91.23 $ 76.05 $ 97.24 401(k) Retirement Plans . We have a 401(k) plan that cover substantially all of our employees as of December 31, 2024. Annual company contributions are discretionary in nature, in accordance with the

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic 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 190,000 shares, 297,500 shares, and 63,500 shares were excluded from the calculation of diluted earnings per share for the years ended December 31, 2024, 2023, and 2022, 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 December 31, (in thousands, except per share data) 2024 2023 2022 Numerator: Net income $ 190,004 $ 129,259 $ 121,549 Denominator: Weighted average basic shares outstanding 30,797 31,455 31,434 Effect of compensation awards 159 78 109 Weighted average diluted shares outstanding 30,956 31,533 31,543 Earnings Per Share: Basic $ 6.17 $ 4.11 $ 3.87 Diluted $ 6.14 $ 4.10 $ 3.85

Schedule II_ Valuation and Qual

Schedule II: Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2024
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 December 31, (in thousands) 2024 2023 2022 Allowance for doubtful accounts: Balance, beginning of period $ 3,518 $ 1,363 $ 1,326 Provision 90 4,592 56 Charge-offs (1,989) (2,437) (19) Balance, end of period $ 1,619 $ 3,518 $ 1,363 Allowance for customer credits: Balance, beginning of period $ 204,495 $ 192,116 $ 188,080 Provision 419,611 407,328 373,157 Charge-offs (419,751) (394,949) (369,121) Balance, end of period $ 204,355 $ 204,495 $ 192,116

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net income	$ 190,004	$ 129,259	$ 121,549

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	12 Months Ended
	Dec. 31, 2024 shares	Dec. 31, 2024 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		The following table describes contracts, instructions, or written plans for the purchase or sale of the Company’s common stock intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) (each, a “Rule 10b5-1 Plan”) entered into or terminated during the quarter ended December 31, 2024 by our directors and officers (as defined under Rule 16b-1(f) of the Exchange Act). There were no non-Rule 10b5-1 trading arrangements entered into or terminated by our directors and officers during the quarter ended December 31, 2024. Name and Title of Director or Officer Date of Adoption of Agreement Expiration Date of Agreement 1 Aggregate Number of Securities to be Purchased or Sold Donna M. Long SVP, Chief Information Officer November 19, 2024 December 31, 2025 13,220 2 Jeffrey L. Darby SVP, Sales and Marketing December 5, 2024 June 30, 2025 11,646 3 Steven L. Berman 4 Non-Executive Chairman of the Board December 13, 2024 March 16, 2026 540,000 1 Each Rule 10b5-1 Plan expires upon the date shown or, if earlier, upon completion of all authorized transactions under such plan. 2 Plan includes (i) the sale of up to 10,263 shares of the Company’s common stock , (ii) the sale of up to 2,150 shares of the Company’s common stock upon the vesting of time-based restricted stock units (“RSUs”) and (iii) the acquisition of up to 807 shares of common stock upon the exercise of up to 807 vested stock options . The actual number of shares sold may be less based on tax withholdings. 3 Plan includes (i) the sale of up to 4,540 shares of the Company’s common stock upon the vesting of time-based RSUs, (ii) the sale of up 1,369 shares of the Company’s common stock upon the vesting of performance-based restricted stock units (“PRSUs”), and (iii) the potential exercise of vested stock options and the associated sale of up to 5,737 shares of the Company’s common stock. The number of shares included assumes that the PRSU vests at 100% of the target award amount. The actual number of PRSUs that may vest can vary between 0% - 200% of the target award of PRSUs, subject to the achievement of certain performance conditions as set forth in the PRSU award agreement, less shares to be withheld for tax withholding obligations. The actual number of shares sold may vary based on tax withholdings and performance and vesting conditions of the awards. 4 Plan covers shares of the Company’s common stock owned (i) by certain family trusts for which Mr. Berman serves as co-trustee, and (ii) by certain family trusts for the benefit of Mr. Berman’s children. Plan does not include shares owned directly by Mr. Berman.
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Donna M. Long [Member]
Trading Arrangements, by Individual
Name	Donna M. Long
Title	SVP, Chief Information Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	November 19, 2024
Expiration Date	December 31, 2025
Arrangement Duration	407 days
Aggregate Available	13,220	13,220
Steven L. Berman [Member]
Trading Arrangements, by Individual
Name	Steven L. Berman
Title	Non-Executive Chairman of the Board
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	December 13, 2024
Expiration Date	March 16, 2026
Arrangement Duration	458 days
Aggregate Available	540,000	540,000
Jeffrey L. Darby [Member]
Trading Arrangements, by Individual
Name	Jeffrey L. Darby
Title	SVP, Sales and Marketing
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	December 5, 2024
Expiration Date	June 30, 2025
Arrangement Duration	207 days
Aggregate Available	11,646	11,646

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We depend on a variety of information systems and technologies (including cloud technologies) (collectively, “IT Systems”) to manage our business. We rely on these IT Systems to provide information for substantially all of our business operations, including supply chain, order processing, e-commerce, human resources, legal, compliance, marketing, finance, and accounting. Our core IT Systems consist mostly of purchased and licensed software programs that integrate together and with our internally developed solutions. As part of our risk management program, we monitor and assess the risks posed by cybersecurity threats to those internal and external systems and solutions and maintain an information security program designed to mitigate such risks. Our information security program includes development, implementation, and improvement of policies and procedures to safeguard information to help ensure availability of critical data and systems. To the extent we utilize third-party vendors to provide information technology services for various areas, including human resources functions (e.g., payroll), we generally require these vendors to monitor and protect their information technology systems against cyber-attacks and other breaches. The Company's technology environment is managed by an experienced team of professionals who follow an extensive set of policies and procedures related to data security. Our program further includes review and assessment by external, independent third parties, who assess and report on our internal incident response preparedness and help identify areas for continued focus and improvement. With the assistance of one such reputable third party, the Company conducts biannual maturity assessments of its IT Systems against the National Institute of Standards of Technology (NIST) Cybersecurity Framework. We also carry insurance that provides protection against the risks from cybersecurity threats. To our knowledge, during 2024, there were no material cybersecurity incidents or threats that materially affected or are reasonably likely to materially affect the Company’s business strategy, results of operations, or financial condition.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We depend on a variety of information systems and technologies (including cloud technologies) (collectively, “IT Systems”) to manage our business. We rely on these IT Systems to provide information for substantially all of our business operations, including supply chain, order processing, e-commerce, human resources, legal, compliance, marketing, finance, and accounting. Our core IT Systems consist mostly of purchased and licensed software programs that integrate together and with our internally developed solutions.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Pursuant to its charter, the Audit Committee of the Board of Directors (the “Board”) has oversight of the Company's information security program, including, but not limited to, risks regarding cybersecurity threats. In particular, the Audit Committee reviews with management the Company’s key IT Systems and evaluates the adequacy of the Company’s information security program, compliance, and controls. The Company's Senior Vice President and Chief Information Officer (“CIO”), who reports to the Company’s Chief Executive Officer, is responsible for the operation of the Company’s information security program. Our CIO is an IT veteran with over 25 years of experience in building and maturing cyber programs for large public companies. The CIO is supported by an internal team of certified security analysts who work in conjunction with leading security operations managed service providers to manage detection and response. On at least an annual basis, a cyber risk report that highlights program governance, risks, and opportunities is provided to the Audit Committee and the full Board. The Company maintains a Security Committee, which is led by the CIO and is comprised of individuals from the Company’s IT department – including dedicated security team members with various security certifications. The Security Committee regularly reviews information security program governance and key performance indicators. These reviews typically include the number of events, number of investigations, mean response time, and cyber trends. The Security Committee oversees the Company’s security roadmap and ensures the monitoring of information security policies and procedures covering areas such as back-up and retention, acceptable use, disaster recovery, incident management, and passwords. The success of the Company’s information security program relies not only on ownership by the CIO’s organization but also on an active and collaborative relationship within the business. The Company requires all employees to complete cyber training annually. For 2024, the Company maintained a security learning management system with phishing simulations distributed regularly to enhance cyber resiliency. Additionally, the Company leverages communications, contests, policies, videos, and visuals to continuously raise awareness among employees.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Pursuant to its charter, the Audit Committee of the Board of Directors (the “Board”) has oversight of the Company's information security program, including, but not limited to, risks regarding cybersecurity threats.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	Pursuant to its charter, the Audit Committee of the Board of Directors (the “Board”) has oversight of the Company's information security program, including, but not limited to, risks regarding cybersecurity threats. In particular, the Audit Committee reviews with management the Company’s key IT Systems and evaluates the adequacy of the Company’s information security program, compliance, and controls. The Company's Senior Vice President and Chief Information Officer (“CIO”), who reports to the Company’s Chief Executive Officer, is responsible for the operation of the Company’s information security program. Our CIO is an IT veteran with over 25 years of experience in building and maturing cyber programs for large public companies. The CIO is supported by an internal team of certified security analysts who work in conjunction with leading security operations managed service providers to manage detection and response.
Cybersecurity Risk Role of Management [Text Block]	The Company's Senior Vice President and Chief Information Officer (“CIO”), who reports to the Company’s Chief Executive Officer, is responsible for the operation of the Company’s information security program. Our CIO is an IT veteran with over 25 years of experience in building and maturing cyber programs for large public companies. The CIO is supported by an internal team of certified security analysts who work in conjunction with leading security operations managed service providers to manage detection and response.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	false
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Company's Senior Vice President and Chief Information Officer (“CIO”), who reports to the Company’s Chief Executive Officer, is responsible for the operation of the Company’s information security program. Our CIO is an IT veteran with over 25 years of experience in building and maturing cyber programs for large public companies. The CIO is supported by an internal team of certified security analysts who work in conjunction with leading security operations managed service providers to manage detection and response.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our CIO is an IT veteran with over 25 years of experience in building and maturing cyber programs for large public companies.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	On at least an annual basis, a cyber risk report that highlights program governance, risks, and opportunities is provided to the Audit Committee and the full Board.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2024
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
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.
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. 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 (or if the Company elects to not perform Step 0), then we would perform a quantitative test (“Step 1”) to determine whether an impairment charge was necessary. During 2023 and 2024, we elected to perform a Step 1 test of our goodwill for the purpose of assessing goodwill for impairment. For both the years ended December 31, 2024 and 2023, we determined that goodwill was not impaired.
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 on 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 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 a customer. Customers and end-users will generally return used cores to us, which we then use in the remanufacturing process to make another finished good. Core inventory was $15.4 million and $20.0 million as of December 31, 2024 and 2023, respectively, and is classified as long-term 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 when performance obligations under the terms of a contract with a customer are satisfied, in an amount representing the consideration the Company expects to receive in exchange for selling products to its customers. 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. The provision for Customer Credits is estimated based on contractual provisions, historical experience, and our assessment of current market conditions and includes various assumptions including, but not limited to, the length of time between when a sale occurs and a credit is issued. 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
Stock-Based Compensation	Stock-Based Compensation
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.
Concentrations of Risk	Concentrations of Risk
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.
Recent Accounting Pronouncements	Recent Accounting Pronouncements. In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07, Improvements to Reportable Segment Disclosures. The ASU requires additional disclosures about reportable segments’ significant expenses on an interim and annual basis. The ASU was effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 on a retrospective basis. We adopted this guidance for our annual report on Form 10-K for the year ended December 31, 2024 and applied the amendments retrospectively to all prior periods presented. The disclosures for interim periods will be adopted in our fiscal year beginning on January 1, 2025. The adoption of this standard did not have a material impact on our results of operations or financial condition. See Note 8, "Segment Information," for further details on segment information. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. The ASU expands disclosures in the income tax rate reconciliations table and cash taxes paid and is effective for annual periods beginning after December 15, 2024. In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses. The ASU requires additional disclosures about categories of expenses, including, among other things, quantitative disclosures for employee compensation, depreciation, intangible asset amortization, selling expenses, and purchases of inventory. The updated guidance is effective for annual reporting periods beginning after December 15, 2026 and interim reporting periods within annual reporting periods beginning after December 15, 2027. We expect to implement these new standards by their effective dates, and do not expect their adoption to have an impact on our results of operations, financial condition or cash flows.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Summary of Sales of Accounts Receivable	Sales of accounts receivable under these agreements, and related factoring costs, which were included in selling, general and administrative expenses, were as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Sales of accounts receivable $ 1,106,400 $ 949,517 $ 1,048,671 Factoring costs $ 51,252 $ 50,231 $ 37,188
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 Property, plant and equipment include the following: December 31, (in thousands) 2024 2023 Buildings $ 67,040 $ 62,434 Machinery, equipment, and tooling 223,807 208,086 Furniture, fixtures, and leasehold improvements 18,390 17,083 Software and computer equipment 127,578 113,148 Total 436,815 400,751 Less-accumulated depreciation and amortization (272,316) (240,638) Property, plant and equipment, net $ 164,499 $ 160,113

Business Acquisitions and Inv_2

Business Acquisitions and Investments (Tables)	12 Months Ended
	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [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 247,474 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 509,778
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, except per share data, unaudited) December 31, 2022 Net sales $ 1,888,379 Net income $ 130,375 Diluted earnings per share $ 4.13

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories were as follows : December 31, (in thousands) 2024 2023 Raw materials $ 29,233 $ 29,750 Bulk product 246,604 211,805 Finished product 421,734 387,668 Packaging materials 10,406 8,152 Total $ 707,977 $ 637,375

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	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 Property, plant and equipment include the following: December 31, (in thousands) 2024 2023 Buildings $ 67,040 $ 62,434 Machinery, equipment, and tooling 223,807 208,086 Furniture, fixtures, and leasehold improvements 18,390 17,083 Software and computer equipment 127,578 113,148 Total 436,815 400,751 Less-accumulated depreciation and amortization (272,316) (240,638) Property, plant and equipment, net $ 164,499 $ 160,113

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Summary of Lease Expense	The following table summarizes the lease expense: For the Year Ended December 31, (in thousands) 2024 2023 2022 Operating lease expense $ 23,926 $ 21,747 $ 17,340 Short-term lease expense 4,159 7,169 5,838 Total lease expense $ 28,085 $ 28,916 $ 23,178
Summary of Supplemental Balance Sheet Information Related to Operating Leases	Supplemental balance sheet information related to our operating leases is as follows: December 31, (in thousands) 2024 2023 Operating lease right-of-use assets $ 118,499 $ 103,476 Other accrued liabilities $ 19,717 $ 16,917 Long-term operating lease liabilities 105,142 91,262 Total operating lease liabilities $ 124,859 $ 108,179 Weighted average remaining lease term (years) 6.33 6.85 Weighted average discount rate 5.09 % 4.20 %
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, 2024: (in thousands) 2025 $ 25,090 2026 25,820 2027 24,095 2028 17,864 2029 15,915 Thereafter 37,215 Total lease payments 145,999 Less: Imputed interest (21,140) Present value of lease liabilities $ 124,859

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill included the following: (in thousands) Light Duty Heavy Duty Specialty Vehicle Consolidated Balance at December 31, 2022 $ — $ — $ — $ 443,035 Measurement period adjustments — — — 233 Foreign currency translation — — — 621 Reporting unit reorganization 313,704 57,876 72,309 — Balance at December 31, 2023 313,704 57,876 72,309 443,889 Goodwill acquired — — 1,167 1,167 Foreign currency translation — (2,170) — (2,170) Balance at December 31, 2024 $ 313,704 $ 55,706 $ 73,476 $ 442,886
Schedule of Intangible Assets	Intangible assets, subject to amortization, included the following: December 31, 2024 2023 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 15.4 $ 173,430 $ 41,358 $ 132,072 $ 175,430 $ 31,678 $ 143,752 Trade names 14.1 67,690 14,999 52,691 67,690 10,676 57,014 Product Portfolio 13.7 107,800 16,522 91,278 107,800 9,720 98,080 Technology 3.8 2,167 1,318 849 2,167 1,069 1,098 Patents and Other 7.3 2,350 1,027 1,323 2,230 618 1,612 Total $ 353,437 $ 75,224 $ 278,213 $ 355,317 $ 53,761 $ 301,556
Schedule of Estimated Future Amortization Expense	The estimated future amortization expense for intangible assets as of December 31, 2024 is summarized as follows: (in thousands) 2025 $ 21,649 2026 20,492 2027 20,081 2028 19,856 2029 19,770 Thereafter 176,365 Total $ 278,213

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Summary of Principal Amortization Payments and Maturities	The term loan portion of the credit agreement contains mandatory repayment provisions that require quarterly principal amortization payments. The following table presents the principal amortization payments and maturities on the term loan for each of the years noted, as of December 31, 2024: (in thousands) December 31, 2024 2025 $ 28,125 2026 37,500 2027 403,125 Total $ 468,750

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Segment results are as follows: For the Year Ended December 31, 2024 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,565,601 $ 231,515 $ 212,081 $ 2,009,197 Cost of goods sold 925,319 171,732 104,994 1,202,045 Factoring expense 51,252 — — 51,252 Other segment expenses 304,866 53,303 74,752 432,921 Segment income from operations $ 284,164 $ 6,480 $ 32,335 $ 322,979 Segment assets $ 1,203,165 $ 157,493 $ 85,606 $ 1,446,264 Depreciation $ 26,485 $ 3,725 $ 3,750 $ 33,960 Capital expenditures $ 34,164 $ 2,421 $ 2,836 $ 39,421 For the Year Ended December 31, 2023 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,462,474 $ 256,913 $ 210,401 $ 1,929,788 Cost of goods sold 928,983 192,729 110,840 1,232,552 Factoring expense 50,231 — — 50,231 Other segment expenses 296,101 49,679 67,943 413,723 Segment income from operations $ 187,159 $ 14,505 $ 31,618 $ 233,282 Segment assets $ 1,083,347 $ 162,583 $ 78,424 $ 1,324,354 Depreciation $ 25,239 $ 3,239 $ 3,420 $ 31,898 Capital expenditures $ 33,445 $ 3,581 $ 6,942 $ 43,968 For the Year Ended December 31, 2022 (in thousands) Light Duty Heavy Duty Specialty Vehicle Total Net sales $ 1,425,892 $ 258,215 $ 49,642 $ 1,733,749 Cost of goods sold 949,918 183,233 25,078 1,158,229 Factoring expense 37,188 — — 37,188 Other segment expenses 269,207 45,244 16,027 330,478 Segment income from operations $ 169,579 $ 29,738 $ 8,537 $ 207,854 Segment assets $ 1,047,987 $ 177,557 $ 106,219 $ 1,331,763 Depreciation $ 25,062 $ 2,772 $ 798 $ 28,632 Capital expenditures $ 31,682 $ 4,769 $ 1,432 $ 37,883
Reconciliation of Operating Income from Segments to Consolidated	A reconciliation of segment income from operations to consolidated income before income taxes is as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Segment income from operations $ 322,979 $ 233,282 $ 207,854 Acquisition-related intangible assets amortization (22,476) (21,817) (14,070) Acquisition-related transaction and other costs (2,621) (15,373) (22,736) Fair value adjustment to contingent consideration — 20,469 — Executive transition services expenses — (1,801) — Pretax reduction in workforce costs (4,973) — — Interest expense, net (39,727) (48,061) (15,582) Other income, net 3,070 1,804 735 Consolidated income before income taxes $ 256,252 $ 168,503 $ 156,201
Reconciliation of Assets from Segment to Consolidated	A reconciliation of segment assets to consolidated assets is as follows: December 31, (in thousands) 2024 2023 2022 Segment assets $ 1,446,264 $ 1,324,354 $ 1,331,763 Other current assets 87,968 69,468 85,834 Other non-current assets 890,289 898,585 924,189 Consolidated assets $ 2,424,521 $ 2,292,407 $ 2,341,786

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Schedule of Related Party Agreements	The following table represents the total payments for the years ended December 31, 2024, 2023, and 2022, under the related party agreements described above: For the Year Ended December 31, (in thousands) 2024 2023 2022 Facility leases with Steven Berman-related entities $ 715 $ 2,918 $ 2,458 Facility leases with Lindsay Hunt-related entities $ 2,757 $ 2,603 $ 519 Service agreements with Lindsay Hunt-related entities $ 54 $ 200 $ 67

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Components of Income Tax Provision (Benefit)	The components of the provision for income taxes are as follows: For the Year Ended December 31, (in thousands) 2024 2023 2022 Current: Federal $ 56,879 $ 34,600 $ 31,683 State 17,907 5,602 7,141 Foreign 2,300 2,002 1,708 77,086 42,204 40,532 Deferred: Federal (7,407) (1,936) (4,003) State (2,618) (338) (1,022) Foreign (813) (686) (855) (10,838) (2,960) (5,880) Provision for income taxes $ 66,248 $ 39,244 $ 34,652
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, 2024 2023 2022 Federal taxes at statutory rate 21.0 % 21.0 % 21.0 % State taxes, net of federal tax benefit 2.4 2.1 2.5 Uncertain tax positions 2.9 0.2 0.3 Research and development tax credit (0.5) (0.7) (0.7) Federal permanent items — 0.3 (0.2) Effect of foreign operations 0.1 0.3 — Other — 0.1 (0.7) Effective tax rate 25.9 % 23.3 % 22.2 %
Change in Unrecognized Tax Benefits	The following table summarizes the change in unrecognized tax benefits for the three years ended December 31: For the Year Ended December 31, (in thousands) 2024 2023 2022 Balance at beginning of year $ 4,539 $ 3,856 $ 1,204 Reductions due to lapses in statutes of limitations (174) (716) (139) Reductions due to tax positions settled (180) — — Additions related to positions taken during a prior period — — 2,136 Reductions due to reversals of prior year positions (1,125) — — Additions based on tax positions taken during the current period 7,253 1,399 655 Balance at end of year 10,313 4,539 3,856
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: December 31, (in thousands) 2024 2023 Assets: Inventories $ 15,111 $ 17,829 Accounts receivable 24,723 20,472 Operating lease liability 31,850 26,261 Accrued expenses 10,932 7,002 Capitalized research and development expenses 16,840 12,263 Net operating losses 295 289 Foreign tax credits 469 469 State tax credits 427 379 Capital loss carryforward 474 478 Total deferred tax assets 101,121 85,442 Valuation allowance (1,429) (1,354) Net deferred tax assets 99,692 84,088 Liabilities: Depreciation 12,938 16,481 Goodwill and intangible assets 52,564 49,798 Operating lease right of use asset 30,146 25,142 Other 1,958 1,592 Gross deferred tax liabilities 97,606 93,013 Net deferred tax assets (liabilities) $ 2,086 $ (8,925)

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Summary of Disaggregated Net Sales	The following table presents our disaggregated net sales by geography. For the Year Ended December 31, (in thousands) 2024 2023 2022 Net Sales to U.S. Customers $ 1,848,420 $ 1,772,092 $ 1,606,472 Net Sales to Non-U.S. Customers 160,777 157,696 127,277 Net Sales $ 2,009,197 $ 1,929,788 $ 1,733,749

Capital Stock (Tables)

Capital Stock (Tables)	12 Months Ended
	Dec. 31, 2024
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 containing a market condition granted: For the Year Ended December 31, 2024 2023 2022 Share price $ 90.47 $ 91.28 $ 96.36 Expected dividend yield 0.0 % 0.0 % 0.0 % Expected stock price volatility 33.4 % 32.8 % 38.3 % Risk-free interest rate 4.4 % 4.6 % 1.6 % Expected life 2.8 years 2.8 years 2.8 years For the Year Ended December 31, 2023 2022 Expected dividend yield 0 % 0 % Expected stock price volatility 35 % 34 % Risk-free interest rate 4.3 % 1.8 % Expected life of options 5.3 years 5.3 years Weighted-average grant-date fair value $ 35.93 $ 32.55
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, 2024: Shares Weighted 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 Granted 112,893 $ 95.34 Vested (73,169) $ 80.63 Canceled (21,092) $ 85.00 Balance at December 31, 2023 257,554 $ 97.33 Granted 188,620 $ 99.08 Vested (75,305) $ 89.84 Canceled (30,291) $ 111.29 Balance at December 31, 2024 340,578 $ 97.84
Summary of Stock Option Activity	The following table summarizes our stock option activity for the three years ended December 31, 2024: Shares Option Price Weighted Weighted Aggregate 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 Canceled (12,162) $61.68 – $101.45 $ 82.19 Balance at December 31, 2022 268,119 $61.68 –$111.53 $ 84.03 Granted 79,404 $86.63 – $91.28 $ 91.13 Exercised (24,297) $61.68 – $82.94 $ 72.33 Expired (7,488) $81.91 – $101.45 $ 91.24 Canceled (4,521) $82.94– $101.45 $ 88.52 Balance at December 31, 2023 311,217 $61.68– $111.53 $ 86.52 Exercised (65,180) $61.68 – $111.53 $ 74.34 Expired (7,228) $91.28 – $101.45 $ 94.71 Canceled (4,520) $91.28 – $101.45 $ 97.64 Balance at December 31, 2024 234,289 $61.68 – $111.53 $ 89.44 4.6 $ 9,398 Exercisable at 135,471 $61.68 – $103.61 $ 85.73 3.9 $ 5,936
Summary of Shares Repurchase and Cancellation	The following table summarizes the repurchase and cancellation of common stock: For the Year Ended December 31, 2024 2023 2022 Shares repurchased and canceled 18,457 13,778 23,015 Total cost of shares repurchased and canceled (in thousands) $ 1,935 $ 1,160 $ 2,357 Average price per share $ 104.86 $ 84.22 $ 102.40 The following table summarizes the repurchase and cancellation of common stock : For the Year Ended December 31, 2024 2023 2022 Shares repurchased and canceled 855,971 201,632 180,750 Total cost of shares repurchased and canceled (in thousands) $ 78,091 $ 15,333 $ 17,577 Average price per share $ 91.23 $ 76.05 $ 97.24

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2024
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 December 31, (in thousands, except per share data) 2024 2023 2022 Numerator: Net income $ 190,004 $ 129,259 $ 121,549 Denominator: Weighted average basic shares outstanding 30,797 31,455 31,434 Effect of compensation awards 159 78 109 Weighted average diluted shares outstanding 30,956 31,533 31,543 Earnings Per Share: Basic $ 6.17 $ 4.11 $ 3.87 Diluted $ 6.14 $ 4.10 $ 3.85

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) customer Segment	Dec. 31, 2023 USD ($) customer	Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items]
Number of operating segments | Segment	3
Number of reportable operating segment | Segment	3
Long-term core inventory	$ 15.4	$ 20
Total book value of equity method investments with fair value	11.2	10.8
Income from equity method investments	5.3	5.7	$ 5.5
Carrying book value of cost method investments	$ 5	$ 5
Return period (up to)	24 months
Credit Concentration Risk | Net Accounts Receivable | Four Customer
Significant Accounting Policies [Line Items]
Number of largest customers | customer	4	4
Concentration risk percentage	78%	74%
Supplier Concentration Risk | Products | Foreign Countries
Significant Accounting Policies [Line Items]
Concentration risk percentage	72%	70%
Selling, General and Administrative Expenses
Significant Accounting Policies [Line Items]
Research and development costs	$ 32.1	$ 32.3	$ 24.8
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 - Sales of Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Sales of accounts receivable	$ 1,106,400	$ 949,517	$ 1,048,671
Factoring costs	$ 51,252	$ 50,231	$ 37,188

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Estimated Useful Lives by Major Asset (Details)	Dec. 31, 2024
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 (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 04, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Business acquisition, purchase price		$ (100)	$ (67)	$ 488,956
Super ATV, LLC
Business Acquisition [Line Items]
Business acquisition, percentage of outstanding stock acquired	100%
Business acquisition, purchase price	$ 509,800
Business acquisition, net of acquired cash	6,800
Potential earn-out	$ 100,000
Payments to acquire businesses			$ 300
Business acquisition, net sales				49,600
Business acquisition, net income				$ 2,300

Business Acquisitions and Inv_4

Business Acquisitions and Investments - Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Oct. 04, 2022
Business Acquisition [Line Items]
Goodwill	$ 442,886	$ 443,889	$ 443,035
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				247,474
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				$ 509,778

Business Acquisitions and Inv_5

Business Acquisitions and Investments - Summary of Unaudited Proforma Information (Details) - Super ATV, LLC $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares
Business Acquisition [Line Items]
Net sales	$ 1,888,379
Net income	$ 130,375
Diluted earnings per share (dollars per share) | $ / shares	$ 4.13

Inventories - Inventories (Deta

Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 29,233	$ 29,750
Bulk product	246,604	211,805
Finished product	421,734	387,668
Packaging materials	10,406	8,152
Total	$ 707,977	$ 637,375

Property, Plant and Equipment -

Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant And Equipment [Line Items]
Total	$ 436,815	$ 400,751
Less-accumulated depreciation and amortization	(272,316)	(240,638)
Property, plant and equipment, net	164,499	160,113
Buildings
Property, Plant And Equipment [Line Items]
Total	67,040	62,434
Machinery, equipment, and tooling
Property, Plant And Equipment [Line Items]
Total	223,807	208,086
Furniture, fixtures, and leasehold improvements
Property, Plant And Equipment [Line Items]
Total	18,390	17,083
Software and computer equipment
Property, Plant And Equipment [Line Items]
Total	$ 127,578	$ 113,148

Property, Plant and Equipment_2

Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant And Equipment [Line Items]
Depreciation and amortization expenses	$ 34,000	$ 31,900	$ 28,600
Property, plant and equipment, net	164,499	160,113
Outside Of United States
Property, Plant And Equipment [Line Items]
Property, plant and equipment, net	$ 4,600	$ 4,300

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lessee Lease Description [Line Items]
Cash paid for operating leases	$ 22.8	$ 21.2	$ 16.8
Minimum
Lessee Lease Description [Line Items]
Operating lease remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining lease term	9 years

Leases - Summary of Lease Expen

Leases - Summary of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease expense	$ 23,926	$ 21,747	$ 17,340
Short-term lease expense	4,159	7,169	5,838
Total lease expense	$ 28,085	$ 28,916	$ 23,178

Leases - Summary of Supplementa

Leases - Summary of Supplemental Balance Sheet Information Related to Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 118,499	$ 103,476
Other accrued liabilities	19,717	16,917
Long-term operating lease liabilities	105,142	91,262
Total operating lease liabilities	$ 124,859	$ 108,179
Weighted average remaining lease term (years)	6 years 3 months 29 days	6 years 10 months 6 days
Weighted average discount rate	5.09%	4.20%
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 (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
2025	$ 25,090
2026	25,820
2027	24,095
2028	17,864
2029	15,915
Thereafter	37,215
Total lease payments	145,999
Less: Imputed interest	(21,140)
Total operating lease liabilities	$ 124,859	$ 108,179

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Balance at beginning of period	$ 443,889	$ 443,035
Measurement period adjustments		233
Foreign currency translation	(2,170)	621
Reporting unit reorganization		0
Goodwill acquired	1,167
Balance at end of period	442,886	443,889
Light Duty
Goodwill [Roll Forward]
Balance at beginning of period	313,704	0
Measurement period adjustments		0
Foreign currency translation	0	0
Reporting unit reorganization		313,704
Goodwill acquired	0
Balance at end of period	313,704	313,704
Heavy Duty
Goodwill [Roll Forward]
Balance at beginning of period	57,876	0
Measurement period adjustments		0
Foreign currency translation	(2,170)	0
Reporting unit reorganization		57,876
Goodwill acquired	0
Balance at end of period	55,706	57,876
Specialty Vehicle
Goodwill [Roll Forward]
Balance at beginning of period	72,309	0
Measurement period adjustments		0
Foreign currency translation	0	0
Reporting unit reorganization		72,309
Goodwill acquired	1,167
Balance at end of period	$ 73,476	$ 72,309

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 353,437	$ 355,317
Accumulated Amortization	75,224	53,761
Net Carrying Value	$ 278,213	301,556
Customer relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	15 years 4 months 24 days
Gross Carrying Value	$ 173,430	175,430
Accumulated Amortization	41,358	31,678
Net Carrying Value	$ 132,072	143,752
Trade names
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	14 years 1 month 6 days
Gross Carrying Value	$ 67,690	67,690
Accumulated Amortization	14,999	10,676
Net Carrying Value	$ 52,691	57,014
Product Portfolio
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	13 years 8 months 12 days
Gross Carrying Value	$ 107,800	107,800
Accumulated Amortization	16,522	9,720
Net Carrying Value	$ 91,278	98,080
Technology
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	3 years 9 months 18 days
Gross Carrying Value	$ 2,167	2,167
Accumulated Amortization	1,318	1,069
Net Carrying Value	$ 849	1,098
Patents and Other
Finite Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (years)	7 years 3 months 18 days
Gross Carrying Value	$ 2,350	2,230
Accumulated Amortization	1,027	618
Net Carrying Value	$ 1,323	$ 1,612

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Acquisition-related intangible assets amortization	$ 22.8	$ 22.1	$ 14.2

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
2025	$ 21,649
2026	20,492
2027	20,081
2028	19,856
2029	19,770
Thereafter	176,365
Net Carrying Value	$ 278,213	$ 301,556

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Oct. 04, 2022	Aug. 10, 2021
Debt Instrument [Line Items]
Debt issuance costs	$ 1,100,000	$ 1,500,000
Dayton Parts | New Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 600,000,000
Super ATV, LLC | Long-Term Debt
Debt Instrument [Line Items]
Term loan			$ 500,000,000
Super ATV, LLC | Revolving Credit Facility
Debt Instrument [Line Items]
Stated percentage	5.71%
Credit facility, commitment fee percentage	0.15%

Long-Term Debt - Principal Amor

Long-Term Debt - Principal Amortization Payments and Maturities (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Debt Disclosure [Abstract]
2025	$ 28,125
2026	37,500
2027	403,125
Total	$ 468,750

Segment Information - Additiona

Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 Segment
Segment Reporting [Abstract]
Number of reportable operating segment	3
Number of operating segments	3

Segment Information - Schedule

Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 2,009,197	$ 1,929,788	$ 1,733,749
Cost of goods sold	1,202,838	1,244,365	1,169,299
Income from operations	292,909	214,760	171,048
Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,009,197	1,929,788	1,733,749
Cost of goods sold	1,202,045	1,232,552	1,158,229
Factoring expense	51,252	50,231	37,188
Other segment expenses	432,921	413,723	330,478
Income from operations	322,979	233,282	207,854
Segment assets	1,446,264	1,324,354	1,331,763
Depreciation	33,960	31,898	28,632
Capital expenditures	39,421	43,968	37,883
Light Duty | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,565,601	1,462,474	1,425,892
Cost of goods sold	925,319	928,983	949,918
Factoring expense	51,252	50,231	37,188
Other segment expenses	304,866	296,101	269,207
Income from operations	284,164	187,159	169,579
Segment assets	1,203,165	1,083,347	1,047,987
Depreciation	26,485	25,239	25,062
Capital expenditures	34,164	33,445	31,682
Heavy Duty | Operating Segments
Segment Reporting Information [Line Items]
Net sales	231,515	256,913	258,215
Cost of goods sold	171,732	192,729	183,233
Factoring expense	0	0	0
Other segment expenses	53,303	49,679	45,244
Income from operations	6,480	14,505	29,738
Segment assets	157,493	162,583	177,557
Depreciation	3,725	3,239	2,772
Capital expenditures	2,421	3,581	4,769
Specialty Vehicle | Operating Segments
Segment Reporting Information [Line Items]
Net sales	212,081	210,401	49,642
Cost of goods sold	104,994	110,840	25,078
Factoring expense	0	0	0
Other segment expenses	74,752	67,943	16,027
Income from operations	32,335	31,618	8,537
Segment assets	85,606	78,424	106,219
Depreciation	3,750	3,420	798
Capital expenditures	$ 2,836	$ 6,942	$ 1,432

Segment Information - Reconcili

Segment Information - Reconciliation of Operating Income from Segments to Consolidated (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Segment income from operations	$ 292,909	$ 214,760	$ 171,048
Acquisition-related intangible assets amortization	(22,800)	(22,100)	(14,200)
Interest expense, net	(39,727)	(48,061)	(15,582)
Other income, net	3,070	1,804	735
Income before income taxes	256,252	168,503	156,201
Operating Segments
Segment Reporting Information [Line Items]
Segment income from operations	322,979	233,282	207,854
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Acquisition-related intangible assets amortization	(22,476)	(21,817)	(14,070)
Acquisition-related transaction and other costs	(2,621)	(15,373)	(22,736)
Fair value adjustment to contingent consideration	0	20,469	0
Executive transition services expenses	0	(1,801)	0
Pretax reduction in workforce costs	(4,973)	0	0
Interest expense, net	(39,727)	(48,061)	(15,582)
Other income, net	$ 3,070	$ 1,804	$ 735

Segment Information - Reconci_2

Segment Information - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Other current assets	$ 1,369,760	$ 1,233,709
Total assets	2,424,521	2,292,407	$ 2,341,786
Operating Segments
Segment Reporting Information [Line Items]
Segment assets	1,446,264	1,324,354	1,331,763
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Other current assets	87,968	69,468	85,834
Other non-current assets	$ 890,289	$ 898,585	$ 924,189

Related-Party Transactions - Sc

Related-Party Transactions - Schedule of Related Party Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Cash paid for operating leases	$ 22,800	$ 21,200	$ 16,800
Steven Berman
Related Party Transaction [Line Items]
Cash paid for operating leases	715	2,918	2,458
Lindsay Hunt
Related Party Transaction [Line Items]
Cash paid for operating leases	2,757	2,603	519
Lindsay Hunt | Service Agreements
Related Party Transaction [Line Items]
Cash paid for operating leases	$ 54	$ 200	$ 67

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) Supplier	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Related Party Transaction [Line Items]
Purchases from companies and from PTI prior to full acquisition | $	$ 18.4	$ 22.7	$ 24.9
Joint Venture
Related Party Transaction [Line Items]
Number of suppliers with company partners Joint Venture	1
Minority interests in number of suppliers	2

Income Taxes - Components of In

Income Taxes - Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 56,879	$ 34,600	$ 31,683
State	17,907	5,602	7,141
Foreign	2,300	2,002	1,708
Current, Total	77,086	42,204	40,532
Deferred:
Federal	(7,407)	(1,936)	(4,003)
State	(2,618)	(338)	(1,022)
Foreign	(813)	(686)	(855)
Deferred, Total	(10,838)	(2,960)	(5,880)
Provision for income taxes	$ 66,248	$ 39,244	$ 34,652

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Taxes at Statutory Tax Rate to Company's Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal taxes at statutory rate	21%	21%	21%
State taxes, net of federal tax benefit	2.40%	2.10%	2.50%
Uncertain tax positions	2.90%	0.20%	0.30%
Research and development tax credit	(0.50%)	(0.70%)	(0.70%)
Federal permanent items	0%	0.30%	(0.20%)
Effect of foreign operations	0.10%	0.30%	0%
Other	0%	0.10%	(0.70%)
Effective tax rate	25.90%	23.30%	22.20%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 25, 2021
Income Tax Contingency [Line Items]
Net unrecognized tax benefits	$ 10,313	$ 4,539	$ 3,856	$ 1,204
Interest and penalties related to unrecognized tax benefits	3,100	0
Interest and penalties related to unrecognized tax benefits accrued	3,500
Segment income from operations	$ 292,909	$ 214,760	$ 171,048
Federal net operating loss expire period	2036
State net operating loss carryforwards expire period	2037
Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 200
Segment income from operations	100
State
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 100

Income Taxes - Change in Unreco

Income Taxes - Change in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 4,539	$ 3,856	$ 1,204
Reductions due to lapses in statutes of limitations	(174)	(716)	(139)
Reductions due to tax positions settled	(180)	0	0
Additions related to positions taken during a prior period	0	0	2,136
Reductions due to reversals of prior year positions	(1,125)	0	0
Additions based on tax positions taken during the current period	7,253	1,399	655
Balance at end of year	$ 10,313	$ 4,539	$ 3,856

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets:
Inventories	$ 15,111	$ 17,829
Accounts receivable	24,723	20,472
Operating lease liability	31,850	26,261
Accrued expenses	10,932	7,002
Capitalized research and development expenses	16,840	12,263
Net operating losses	295	289
Foreign tax credits	469	469
State tax credits	427	379
Capital loss carryforward	474	478
Total deferred tax assets	101,121	85,442
Valuation allowance	(1,429)	(1,354)
Net deferred tax assets	99,692	84,088
Liabilities:
Depreciation	12,938	16,481
Goodwill and intangible assets	52,564	49,798
Operating lease right of use asset	30,146	25,142
Other	1,958	1,592
Gross deferred tax liabilities	97,606	93,013
Net deferred tax assets	$ 2,086
Net deferred tax liabilities		$ (8,925)

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Maximum additional contingent payments to be made	$ 102,000
Fair value of estimated payments	0	$ 0
Net decrease in contingent consideration liability		20,000
Fair value adjustment to contingent consideration	$ 0	20,468	$ 0
Increase due to accretion as a result of the passage of time		$ 500
Contingent consideration paid			$ 1,800

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - customer	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue From Contract With Customer [Line Items]
Maximum credit terms allow to customers	1 year
Number of customers exceeding 10% of net sales	2	3	3
Sales Revenue, Net | Customer Concentration Risk | Two Customer
Revenue From Contract With Customer [Line Items]
Total percentage of sales to customers exceeding 10% of sales	39%
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		44%	49%
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: 2025-01-01
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 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation Of Revenue [Line Items]
Net sales	$ 2,009,197	$ 1,929,788	$ 1,733,749
Net Sales to U.S. Customers
Disaggregation Of Revenue [Line Items]
Net sales	1,848,420	1,772,092	1,606,472
Net Sales to Non-U.S. Customers
Disaggregation Of Revenue [Line Items]
Net sales	$ 160,777	$ 157,696	$ 127,277

Capital Stock - Additional Info

Capital Stock - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2017	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 28, 2019	Oct. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding shares owned by controlling family		15%	16%
Shares authorized of undesignated capital stock for future issuance		50,000,000
Date of plan approval		May 16, 2018
Authorized number of common stock shares for grant		1,200,000
Shares available for grant under the plan		329,263
Weighted-average grant-date fair value (dollars per share)			$ 91.13	$ 96.96
Compensation cost related to stock options		$ 1,600,000	$ 2,000,000	$ 1,700,000
Cash received from stock option exercises under the plan		$ 4,711,000	1,167,000	1,046,000
Common stock, shares held by 401(K) plan		128,666
Total 401(K) expense		$ 13,100,000	$ 9,100,000	$ 8,200,000
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		134,600,000
New Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchase program shares authorized to be repurchased						$ 500,000,000
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		28,674	29,650	25,600
Compensation cost		$ 1,100,000	$ 400,000	$ 400,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Expected life			5 years 3 months 18 days	5 years 3 months 18 days
Weighted-average grant-date fair value (dollars per share)			$ 35.93	$ 32.55
Unrecognized compensation cost related to unvested stock options		$ 2,100,000
Unrecognized compensation cost related to unvested stock options, weighted-average period		1 year 10 months 24 days
RSAs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life					3 years
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)		$ 138.58	$ 113.15	$ 111.31
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		$ 12,300,000	$ 9,100,000	$ 7,200,000
RSAs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock options		$ 18,400,000
Unrecognized compensation cost related to unvested stock options, weighted-average period		1 year 10 months 24 days

Capital Stock - Schedule of Wei

Capital Stock - Schedule of Weighted Average Valuation Assumptions - RSAs and RSUs (Details) - Performance Based RSAs and Performance-Based RSUs - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (dollars per share)	$ 90.47	$ 91.28	$ 96.36
Expected dividend yield	0%	0%	0%
Expected stock price volatility	33.40%	32.80%	38.30%
Risk-free interest rate	4.40%	4.60%	1.60%
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 (Details) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Shares
Beginning balance (in shares)	257,554	238,922	206,677
Granted (in shares)	188,620	112,893	130,131
Vested (in shares)	(75,305)	(73,169)	(55,255)
Canceled (in shares)	(30,291)	(21,092)	(42,631)
Ending balance (in shares)	340,578	257,554	238,922
Weighted Average Fair Value
Beginning balance, weighted average fair value (dollars per share)	$ 97.33	$ 92.07	$ 85.97
Granted, weighted average fair value (dollars per share)	99.08	95.34	96.32
Vested, weighted average fair value (dollars per share)	89.84	80.63	83.70
Cancelled, weighted average fair value (dollars per share)	111.29	85	85.89
Ending balance, weighted average fair value (dollars per share)	$ 97.84	$ 97.33	$ 92.07

Capital Stock - Summary of Weig

Capital Stock - Summary of Weighted Average Valuation Assumptions - Options Granted (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value (dollars per share)	$ 91.13	$ 96.96
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0%	0%
Expected stock price volatility	35%	34%
Risk-free interest rate	4.30%	1.80%
Expected life of options	5 years 3 months 18 days	5 years 3 months 18 days
Weighted-average grant-date fair value (dollars per share)	$ 35.93	$ 32.55

Capital Stock - Summary of Stoc

Capital Stock - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Shares
Beginning balance (in shares)	311,217	268,119	233,396
Granted (in shares)		79,404	79,749
Exercised (in shares)	(65,180)	(24,297)	(32,201)
Expired (in shares)	(7,228)	(7,488)
Canceled (in shares)	(4,520)	(4,521)	(12,162)
Ending balance (in shares)	234,289	311,217	268,119
Ending balance, exercisable (in shares)	135,471
Weighted Average Price
Beginning balance, weighted average price (dollars per share)	$ 86.52	$ 84.03	$ 77.85
Granted, weighted average price (dollars per share)		91.13	96.96
Exercised, weighted average price (dollars per share)	74.34	72.33	71.74
Expired, weighted average price (dollars per share)	94.71	91.24
Cancelled, weighted average price (dollars per share)	97.64	88.52	82.19
Ending balance, weighted average price (dollars per share)	89.44	86.52	84.03
Exercisable, weighted average price (dollars per share)	$ 85.73
Balance at December 31, 2024, weighted average remaining term (in years)	4 years 7 months 6 days
Exercisable, weighted average remaining term (in years)	3 years 10 months 24 days
Balance at December 31, 2024, aggregate intrinsic value	$ 9,398
Exercisable, aggregate intrinsic value	$ 5,936
Minimum
Option Price per Share
Beginning balance, option price per share (dollars per share)	$ 61.68	61.68	61.68
Granted, option price per share (dollars per share)		86.63	83.81
Exercised, option price per share (dollars per share)	61.68	61.68	61.68
Expired, option price per share (dollars per share)	91.28	81.91
Cancelled, option price per share (dollars per share)	91.28	82.94	61.68
Ending balance, option price per share (dollars per share)	61.68	61.68	61.68
Ending balance, Exercisable option price per share (dollars per share)	61.68
Maximum
Option Price per Share
Beginning balance, option price per share (dollars per share)	111.53	111.53	103.61
Granted, option price per share (dollars per share)		91.28	111.53
Exercised, option price per share (dollars per share)	111.53	82.94	83.06
Expired, option price per share (dollars per share)	101.45	101.45
Cancelled, option price per share (dollars per share)	101.45	101.45	101.45
Ending balance, option price per share (dollars per share)	111.53	$ 111.53	$ 111.53
Ending balance, Exercisable option price per share (dollars per share)	$ 103.61

Capital Stock - Summary of Shar

Capital Stock - Summary of Shares Repurchase and Cancellation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Common Stock Repurchases
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased and canceled (in shares)	18,457	13,778	23,015
Total cost of shares repurchased and canceled (in thousands)	$ 1,935	$ 1,160	$ 2,357
Average price per share (dollars per share)	$ 104.86	$ 84.22	$ 102.40
Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased and canceled (in shares)	855,971	201,632	180,750
Total cost of shares repurchased and canceled (in thousands)	$ 78,091	$ 15,333	$ 17,577
Average price per share (dollars per share)	$ 91.23	$ 76.05	$ 97.24

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Stock-based awards considered as anti-dilutive	190,000	297,500	63,500

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Computation of Basic Earnings per Share and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Net income	$ 190,004	$ 129,259	$ 121,549
Denominator:
Weighted average basic shares outstanding (in shares)	30,797	31,455	31,434
Effect of compensation awards (in shares)	159	78	109
Weighted averaged diluted shares outstanding (in shares)	30,956	31,533	31,543
Earnings per share:
Basic (dollars per share)	$ 6.17	$ 4.11	$ 3.87
Diluted (dollars per share)	$ 6.14	$ 4.10	$ 3.85

Schedule II_ Valuation and Qu_2

Schedule II: Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for doubtful accounts
Valuation and Qualifying Accounts
Balance, beginning of period	$ 3,518	$ 1,363	$ 1,326
Provision	90	4,592	56
Charge-offs	(1,989)	(2,437)	(19)
Balance, end of period	1,619	3,518	1,363
Allowance for customer credits
Valuation and Qualifying Accounts
Balance, beginning of period	204,495	192,116	188,080
Provision	419,611	407,328	373,157
Charge-offs	(419,751)	(394,949)	(369,121)
Balance, end of period	$ 204,355	$ 204,495	$ 192,116