Document and Entity Information Document Type Document Annual Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address State Or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period ICFR Auditor Attestation Flag Document Financial Statement Error Correction [Flag] Entity Shell Company Entity Public Float Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Auditor Name Auditor Firm ID Auditor Location Consolidated Balance Sheets Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Redeemable Preferred Stock Convertible Preferred Stock Statement [Line Items] Common Stock Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable Inventory, Net Inventory, net Carrying amount as of the balance sheet date of assets for recovery. Asset For Recovery Assets for recovery Income Taxes Receivable Income tax refund receivable Prepaid Expense and Other Assets, Current Prepaids and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Goodwill Goodwill Indefinite-lived Intangible Assets (Excluding Goodwill) Tradename Finite-Lived Intangible Assets, Net Intangible assets, net Amount of lessee's right to use underlying asset under operating lease and finance lease. Operating And Finance Lease Right Of Use Asset Lease right-of-use assets Other Assets, Noncurrent Other noncurrent assets Assets Total assets Liabilities and Equity [Abstract] Liabilities, Redeemable Preferred Stock, Convertible Preferred Stock and Stockholders' Equity (Deficit) Liabilities [Abstract] Liabilities Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities and Other Liabilities Accrued expenses and other current liabilities Accrued expenses and other current liabilities Represents the reserve created for the sales returns. Returns Reserve Returns reserve Represents the stored valued card liability. Stored Value Card Liability Stored-value card liability Line of Credit, Current Revolving line of credit Present value of lessee's discounted obligation for lease payments from operating and finance lease , classified as current. Operating And Finance Lease Liability Current Lease liabilities, current Liabilities, Current Total current liabilities Long-term Line of Credit, Noncurrent Revolving line of credit, noncurrent Present value of lessee's discounted obligation for lease payments from operating and finance lease, classified as noncurrent Operating And Finance Lease Liability Noncurrent Lease liabilities, noncurrent Other Liabilities, Noncurrent Other noncurrent liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and Contingencies (Note 7) Temporary Equity, Carrying Amount, Attributable to Parent Balance Balance Temporary equity, carrying amount Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred stock: $0.001 par value, 10,000,000 shares authorized, and no shares issued or outstanding Common Stock, Value, Issued Common stock: $0.001 par value, 250,000,000 shares authorized; and 40,618,206 and 39,259,328 shares issued and outstanding as of December 31, 2023 and January 1, 2023, respectively Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock issued Preferred Stock, Shares Outstanding Preferred stock outstanding Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Consolidated Statements of Operations and Comprehensive Income (Loss) Revenue from Contract with Customer, Excluding Assessed Tax Net revenue Cost of Revenue Cost of revenue Gross Profit Gross profit Selling and Marketing Expense Selling and marketing expenses General and Administrative Expense General and administrative expenses Operating Income (Loss) Income (loss) from operations Nonoperating Income (Expense) [Abstract] Other income (expense), net: Interest Expense Interest expense Gain (Loss) on Extinguishment of Debt Loss on debt extinguishment Loss on extinguishment of debt Other Nonoperating Income Other income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before provision (benefit) for income taxes Income Tax Expense (Benefit) Income tax provision (benefit) Income tax provision (benefit) Net income (loss) and comprehensive income (loss) Net (loss) income and comprehensive (loss) income Preferred Stock Dividends, Income Statement Impact Deemed dividend to preferred stockholders Amount of stock dividend issued to LP. Stock Dividend Issued To LP Stock dividend issued to LP Amount of deemed contribution from redemption of redeemable preferred stock. Deemed Contribution From Redemption of Redeemable Preferred Stock Deemed contribution from redemption of redeemable preferred stock Net income (loss) attributable to common stockholders - Basic Net income (loss) attributable to common stockholders Earnings Per Share, Basic Basic earnings (loss) per share (In dollars per share) Earnings Per Share, Diluted Diluted earnings (loss) per share (In dollars per share) Weighted Average Number of Shares Outstanding, Basic Basic weighted-average shares outstanding (In shares) Weighted average shares used to compute net income (loss) per share attributable to common stockholders - Basic Weighted Average Number of Shares Outstanding, Diluted Diluted weighted-average shares outstanding (In shares) Weighted average shares used to compute net income (loss) per share attributable to common stockholders - Diluted Consolidated Statements of Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Common Stock. Additional Paid-In Capital Accumulated Deficit Sale of Stock [Axis] Sale of Stock [Domain] IPO Consolidated Entities [Axis] Consolidated Entities [Domain] Represents information relating to Lulu's Holdings, L.P. Lulu's Holdings, L.P Increase (Decrease) in Temporary Equity [Roll Forward] Temporary Equity, Shares Outstanding Balance (in shares) Balance (in shares) Temporary Equity, Stock Issued During Period, Value, New Issues Series B-1 redeemable preferred stock issuance Number of shares classified as temporary equity issued during the period. Temporary Equity, Stock Issued During Period, Shares, New Issues Series B-1 redeemable preferred stock issuance (in shares) Value of redeemable convertible preferred stock shares converted. Redeemable Convertible Preferred Stock, Shares Converted Value Conversion of convertible preferred stock to common stock upon the IPO Number of redeemable convertible preferred stock shares converted. Redeemable Convertible Preferred Stock, Shares Converted Conversion of convertible preferred stock to common stock upon the IPO (in shares) Amount of redemption of redeemable preferred stock. Redemption of Redeemable Preferred Stock, Value Redemption of redeemable preferred stock upon the IPO Number of redeemable preferred stock redeemed. Redeemable Preferred Stock, Shares Redemption of redeemable preferred stock upon the IPO (in shares) Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares, Outstanding Balance (in shares) Balance (in shares) Restricted Stock, Value, Shares Issued Net of Tax Withholdings Issuance of common stock for vesting of restricted stock units (RSUs) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Issuance of common stock for vesting of restricted stock units (RSUs) (shares) Shares Issued, Shares, Share-based Payment Arrangement, Forfeited Issuance of common stock for special compensation award (shares) Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of common stock for employee stock purchase plan (ESPP) Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of common stock for employee stock purchase plan (ESPP) (in shares) Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Shares withheld for withholding tax on RSUs Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Shares withheld for withholding tax on RSUs (in shares) Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Offering costs related to IPO Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Forfeited shares of unvested restricted stock (in shares) Amount of increase (decrease) to additional paid in capital (APIC) resulting from settlement of distributions payable to former unit holders. Adjustments to Additional Paid in Capital, Settlement of Distributions Payable to Former Unit Holders Settlement of distributions payable to former Class P unit holders APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition Equity-based compensation expense Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Equity-based compensation expense (in shares) Stock Issued During Period, Value, New Issues Stock issuance Stock Issued During Period, Shares, New Issues Issuance of common stock (in shares) Stock issuance (in shares) Amount relating to deemed dividend to convertible preferred stockholders upon the IPO. Deemed Dividend To Convertible Preferred Stockholders Upon IPO Deemed dividend to convertible preferred stockholders upon the IPO Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of convertible preferred stock to common stock Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of convertible preferred stock to common stock (in shares) Amount of increase to additional paid-in capital (APIC) for reclassification of liability classified awards to equity classified. APIC, Share-based Payment Arrangement, Reclassification Liability Classified to Equity Classified Awards Reclassification of liability-classified CEO award to equity-classified awards Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock Redemption of redeemable preferred stock upon the IPO It represent information relating to series B-1 redeemable preferred stock. Series B-1 Redeemable Preferred Stock The amount of issuance costs associated with the issuance of temporary equity. Temporary Equity, Issuance Costs Issuance costs The amount of underwriting discounts, commissions and issuance costs associated with the issuance of equity. Underwriting Discounts Commissions and Issuance Costs Underwriting discounts and commissions and issuance costs Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Cash Flows from Operating Activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Amount of non cash lease expenses. Non Cash Lease Expenses Noncash lease expense Amortization of Debt Issuance Costs and Discounts Amortization of debt discount and debt issuance costs Interest Costs Capitalized Interest expense capitalized to principal of long-term debt and revolving line of credit Payment of interest cost capitalized to principal of long term debt. Payment of Interest Capitalized Payment of interest capitalized to principal of long-term debt and revolving line of credit Gain (Loss) on Disposition of Assets Loss on disposal of property and equipment Share-based Payment Arrangement, Noncash Expense Equity-based compensation expense The amount of share based compensation expense related to issuance of temporary equity. Equity Based Compensation Expense Related To Temporary Equity Issuance Equity-based compensation expense related to redeemable preferred stock issuance Deferred Income Tax Expense (Benefit) Deferred income taxes Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventories Amount of increase (decrease) in assets for recovery during the period. Increase (Decrease) in Assets for Recovery Assets for recovery Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Income taxes (receivable) payable Increase (Decrease) in Prepaid Expense and Other Assets Prepaid and other current assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued expenses and other current liabilities Increase (Decrease) in Operating Lease Liability Operating lease liabilities Increase (Decrease) in Other Noncurrent Liabilities Other noncurrent liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash Flows from Investing Activities Payments to Develop Software Capitalized software development costs Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments for (Proceeds from) Other Investing Activities Other Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash Flows from Financing Activities Proceeds from Long-term Lines of Credit Proceeds from borrowings on revolving line of credit Repayments of Lines of Credit Repayments on revolving line of credit Repaid outstanding balance The cash inflow from issuance of stock under employee stock purchase plan. Proceeds From Issuance Of Stock Under Employee Stock Purchase Plan Proceeds from issuance of common stock under employee stock purchase plan (ESPP) Repayments of Long-term Debt Repayment of long-term debt Payments of Debt Issuance Costs Payment of debt issuance costs Proceeds from Issuance Initial Public Offering Net proceeds Issuance of common stock upon IPO, net of underwriting discounts and commissions and issuance costs Proceeds from Issuance of Redeemable Preferred Stock Proceeds from the issuance of redeemable preferred stock, net of issuance costs Payments for Repurchase of Redeemable Preferred Stock Redemption of redeemable preferred stock