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disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Expected option term Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Market value per share (in dollars per share) Share Price Lessee terms Lessee, Operating Lease, Term of Contract PEO Name PEO Name Operating Leases From Affiliated and Unaffiliated Lessors [Domain] Operating Leases From Affiliated and Unaffiliated Lessors [Domain] Operating Leases From Affiliated and Unaffiliated Lessors Accrued expenses Increase (Decrease) in Accrued Liabilities Leasehold improvements Leasehold Improvements [Member] Accounting Policies [Line Items] Accounting Policies [Line Items] Accounting Policies [Line Items] Total minimum lease payments Lessor, Operating Lease, Payment to be Received Deferred revenue Contract with Customer, Liability Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR 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Per Share, Basic Deferred revenue Customer liability Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Reportable Segment Reportable Segment [Member] Reportable Segment Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Award Type [Axis] Award Type [Axis] 2026 Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accumulated deficit Retained Earnings (Accumulated Deficit) Girls Girls [Member] Girls [Member] Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Marketable securities Estimated Fair Value Debt Securities, Available-for-Sale Weighted average expected volatility factor Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Fixed operating lease expense Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Expected annual dividend yield Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Details of Impairment of Long-Lived Assets Long-Lived Asset, Held and Used, Impairment [Table Text Block] Directors Directors [Member] Directors Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Equity Awards Adjustments Equity Awards Adjustments [Member] TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity Variable lease expense Variable Lease, Cost Occupancy Cost Of Goods Sold, Operating Lease Charges and Depreciation Expense Cost Of Goods Sold, Operating Lease Charges and Depreciation Expense Stock options Share-Based Payment Arrangement, Option [Member] Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Additional paid-in capital Additional Paid in Capital Other income, net Other Nonoperating Income (Expense) Accounting Policies [Table] Accounting Policies [Table] Accounting Policies [Table] Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Outstanding at end of period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value 17 Pasteur, Irvine, California 17 Pasteur, Irvine, California [Member] 17 Pasteur, Irvine, California [Member] Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Receivables Receivables, Net, Current Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued or outstanding Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] 11 Whatney, Irvine, California 11 Whatney, Irvine, California [Member] 11 Whatney, Irvine, California [Member] Class of Stock [Domain] Class of Stock [Domain] Number of stores tested for impairment Number of Stores Tested for Impairment Number of Stores Tested for Impairment Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Office costs Other General Expense Unredeemed awards and accumulated points, expiration period Unredeemed Awards and Accumulated Points, Expiration Period Unredeemed Awards and Accumulated Points, Expiration Period Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Third-party Sales Channel, Through Intermediary [Member] Name Trading Arrangement, Individual Name Other selling costs Selling Expense Cash and cash equivalents Cash and Cash Equivalent Fair value of assets impaired Impaired Long-Lived Assets Held and Used, Fair Value Impaired Long-Lived Assets Held and Used, Fair Value Operating lease rent expense Operating Lease, Expense Company Selected Measure Amount Company Selected Measure Amount Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Gain (Loss) on Investments Gain (Loss) on Securities [Table Text Block] Secured Overnight Financing Rate (SOFR Secured Overnight Financing Rate (SOFR) [Member] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Current assets: Assets, Current [Abstract] Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Operating lease liabilities arising from obtaining operating lease assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vested (in usd per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Income tax expense (benefit) Income Tax Expense (Benefit) Total cost of goods sold (includes buying, distribution, and occupancy costs) Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Change in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] 2028 Lessor, Operating Lease, Payment to be Received, Year Two Tranche Three Share-Based Payment Arrangement, Tranche Three [Member] Net loss Net loss Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Swing Line Loans Bridge Loan [Member] Statement [Table] Statement [Table] Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Restatement Determination Date: Restatement Determination Date [Axis] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Exercisable ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Leases Lessee, Leases [Policy Text Block] Receivables Increase (Decrease) in Receivables Rent expense, related party Rent Expense, Related Party, Selling, General And Administrative Expenses Rent Expense, Related Party, Selling, General And Administrative Expenses Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items] Other COGS Cost Of Goods And Services Sold, Other Cost Of Goods And Services Sold, Other Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]