Entity tax identification number Entity Tax Identification Number Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Administrative expenses Administrative expenses EBP, Forfeited Nonvested Account, Decrease from Administrative Expense Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] EBP, Reconciliation of Forfeited Accounts [Roll Forward] EBP, Reconciliation of Forfeited Accounts [Roll Forward] EBP, Reconciliation of Forfeited Accounts EBP 001 EBP 001 [Member] EBP 001 Involuntary cash-out limit EBP, Involuntary Cash-out Limit EBP, Involuntary Cash-out Limit EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Maximum annual compensation to total compensation, percentage EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Note receivable from participant, account, maximum borrowing, amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] Note receivable from participant, account, minimum borrowing, amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Accrued expense EBP, Accrued Expense Total investments EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, net asset value per share or unit (in dollars per share) EBP, Net Asset Value per Share or Unit Note receivable from participant, account, primary residence, borrowing term EBP, Note Receivable From Participant, Primary Residence, Borrowing Term EBP, Note Receivable From Participant, Primary Residence, Borrowing Term EBP, Investment, Fair Value and NAV [Abstract] Reconciliation Of Forfeited Accounts EBP, Reconciliation Of Forfeited Accounts [Table Text Block] EBP, Reconciliation Of Forfeited Accounts Assets: EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Note receivable from participant, borrowing term EBP, Note Receivable From Participant, Borrowing Term EBP, Note Receivable From Participant, Borrowing Term Benefits paid to participants EBP, Payment to Participant [Policy Text Block] Amendment Flag Amendment Flag Basis of accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Investment, number of shares (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Receivables: EBP, Receivable [Abstract] Employer contribution vesting service period EBP, Employer Contribution Vesting Service Period EBP, Employer Contribution Vesting Service Period Investments [Domain] Investments [Domain] EBP, Nonemployer, Common Stock EBP, Nonemployer, Common Stock [Member] Use of estimates EBP, Use of Estimate [Policy Text Block] Note receivable from participant, account, maximum borrowing, number of loans EBP, Note Receivable from Participant, Account, Maximum Borrowing, Number Of Loans EBP, Note Receivable from Participant, Account, Maximum Borrowing, Number Of Loans SCHEDULE H, PART IV, Line 4(i) SCHEDULE OF ASSETS (HELD AT END OF YEAR) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Minimum Minimum [Member] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] Interest on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Investment Type [Axis] Investment Type [Axis] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Employer contribution, participant compensation matched, elective deferrals, percentage EBP, Employer Contribution, Participant Compensation Matched, Elective Deferrals, Percentage EBP, Employer Contribution, Participant Compensation Matched, Elective Deferrals, Percentage Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Forfeitures EBP, Forfeited Nonvested Account, Forfeitures EBP, Forfeited Nonvested Account, Forfeitures Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] Requisite service period EBP, Requisite Service Period EBP, Requisite Service Period EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Note receivable from participant, allowance for credit loss EBP, Note Receivable from Participant, Allowance for Credit Loss Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense EBP, Asset Held for Investment EBP, Asset Held for Investment Document Information [Line Items] Document Information [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Line Items] EBP, Risk and Uncertainty [Table] EBP, Risk and Uncertainty [Table] Employer contribution, participant compensation matched, percentage EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Employer contribution vesting percentage EBP, Employer Contribution Vesting Percentage EBP, Employer Contribution Vesting Percentage EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type Participant contribution, maximum allocation, deferral rate EBP, Participant Contribution, Maximum Allocation, Deferral Rate EBP, Participant Contribution, Maximum Allocation, Deferral Rate EBP, Tax Status [Table] EBP, Tax Status [Table] Increase in net assets available for benefits EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EXEMPT PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Receivable EBP, Receivable Participant contribution, automatic, deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Investments, at fair value: EBP, Investment, Fair Value [Abstract] Employer contribution, elective deferrals, matching percentage EBP, Employer Contribution, Elective Deferrals, Matching Percentage EBP, Employer Contribution, Elective Deferrals, Matching Percentage Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant CURRENT VALUE EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] Earnings on forfeited account balance EBP, Forfeited Nonvested Account, Earnings On Forfeited Account Balance EBP, Forfeited Nonvested Account, Earnings On Forfeited Account Balance EBP, Tax Status [Abstract] USANA Health Sciences, Inc. Stock Fund EBP, Employer, Common Stock Fund [Member] Noninterest-bearing cash EBP, Noninterest-Bearing Cash EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment valuation and income recognition EBP, Investment [Policy Text Block] EBP, Non-Elective Employer Contributions EBP, Non-Elective Employer Contributions [Member] EBP, Non-Elective Employer Contributions Document Type Document Type PLAN TERMINATION EBP, Plan Termination [Text Block] Entity Central Index Key Entity Central Index Key Asset held for investment, participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate Net assets available for benefits: EBP, Net Asset Available for Benefit [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] EBP, Risk and Uncertainty [Abstract] Deductions: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Employer matching contributions Employer matching contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Subsequent events EBP, Subsequent Event [Policy Text Block] TAX STATUS EBP, Tax Status [Text Block] Collective investment fund Collective Investment Fund [Member] Collective Investment Fund Note receivable from participant, account, maximum borrowing, to total account, percentage EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Document Information [Table] Document Information [Table] Notes receivable from participants EBP, Note Receivable from Participant [Policy Text Block] Investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Minimum age to participate EBP, Minimum Age To Participate EBP, Minimum Age To Participate Net assets available for benefits Beginning of the year End of the year EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Balance as of December 31, 2024 Balance as of December 31, 2025 EBP, Forfeited Nonvested Account Employer contribution, matching percentage EBP, Employer Contribution, Matching Percentage EBP, Employer Matching Contribution EBP, Employer Matching Contribution [Member] EBP, Employer Matching Contribution EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]