75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Balance Sheets link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - Statements of Operations and Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - Statements of Operations and Comprehensive Income (Loss) 2 link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 75070 - Disclosure - Cybersecurity link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Organization and Description of Business link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Balance Sheet Components link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Stock-based Compensation link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Kura Sushi USA Inc. 401(k) Plan link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Income (Loss) Per Share link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Balance Sheet Components (Tables) link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 995635 - Disclosure - Related Party Transactions (Tables) link:presentationLink link:calculationLink link:definitionLink 995645 - Disclosure - Stock-based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 995655 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 995665 - Disclosure - Income (Loss) Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 995675 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 995685 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 995695 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 995705 - Disclosure - Organization and Description of Business - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995715 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995725 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Various Types of Property and Equipment and Their Useful Lives (Details) link:presentationLink link:calculationLink link:definitionLink 995735 - Disclosure - Balance Sheet Components - Schedule of Accounts and Other Receivables (Details) link:presentationLink link:calculationLink link:definitionLink 995745 - Disclosure - Balance Sheet Components - Schedule of Inventories (Details) link:presentationLink link:calculationLink link:definitionLink 995755 - Disclosure - Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 995765 - Disclosure - Balance Sheet Components - Schedule of Property and Equipment - Net (Details) link:presentationLink link:calculationLink link:definitionLink 995775 - Disclosure - Balance Sheet Components - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995785 - Disclosure - Balance Sheet Components - Schedule of Deposits and Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 995795 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995805 - Disclosure - Leases - Summary of Lease Related Costs (Details) link:presentationLink link:calculationLink link:definitionLink 995815 - Disclosure - Leases - Summary of Finance Leases Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 995825 - Disclosure - Leases - Summary of Weighted Average Remaining Lease Term and Weighted Average Discount Rate (Details) link:presentationLink link:calculationLink link:definitionLink 995835 - Disclosure - Leases - Summary of Supplemental Disclosures of Cash Flow Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 995845 - Disclosure - Leases - Summary of Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 995855 - Disclosure - Leases - Summary of Maturities of Lease Liabilities (Details) 2 link:presentationLink link:calculationLink link:definitionLink 995865 - Disclosure - Related Party Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995875 - Disclosure - Related Party Transactions - Schedule of Related Party Transactions Due to and from Affiliates (Details) link:presentationLink link:calculationLink link:definitionLink 995885 - Disclosure - Related Party Transactions - Schedule of Related Party Reimbursements and Other Payments (Details) link:presentationLink link:calculationLink link:definitionLink 995895 - Disclosure - Stock-based Compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995905 - Disclosure - Stock-based Compensation - Summary of Stock Option Activity under Stock Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 995915 - Disclosure - Stock-based Compensation - Summary of Restricted Stock Unit (RSU) Activity Under Stock Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 995925 - Disclosure - Stock-based Compensation - Summary of Stock Based Compensation Recognized under Stock Incentive Plan (Details) link:presentationLink link:calculationLink link:definitionLink 995935 - Disclosure - Stock-based Compensation - Fair Value of Stock Options Estimated on Grant Date (Details) link:presentationLink link:calculationLink link:definitionLink 995945 - Disclosure - Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995955 - Disclosure - Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 995965 - Disclosure - Kura Sushi USA, Inc. 401(k) Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995975 - Disclosure - Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995985 - Disclosure - Income (Loss) Per Share - Computation of Basic and Diluted Net Income (Loss) Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 995995 - Disclosure - Income (Loss) Per Share - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996005 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996015 - Disclosure - Income Taxes - Summary of Components of Income (Loss) Before Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 996025 - Disclosure - Income Taxes - Summary of Components of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 996035 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996045 - Disclosure - Income Taxes - Summary of Reconciliation of Statutory Federal Income Tax Rate (Details) link:presentationLink link:calculationLink link:definitionLink 996055 - Disclosure - Income Taxes - Summary of Deferred Income Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 996065 - Disclosure - Segment Information - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996075 - Disclosure - Segment Information - Summary of Reported Segment Sales and Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 996085 - Disclosure - Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 996095 - Disclosure - Investments - Summary of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 996105 - Disclosure - Investments - Summary of Maturities of Assets (Details) link:presentationLink link:calculationLink link:definitionLink Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Performance restricted stock units, weighted average grant date fair value Weighted average exercise price per share, RSUs vested Deposits and other assets Deposits And Other Assets Noncurrent Deposits and other assets current. Total deposits and other assets Retirement Plan Type [Axis] Software Software Development [Member] Concentration Risk Type [Axis] Total finance lease liabilities Present value of lease liabilities Finance Lease, Liability Schedule of Related Party Reimbursements and Other Payments Schedule of Related Party Transactions [Table Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Deposits And Other Assets [Line Items] Deposits And Other Assets [Line Items] Deposits and other assets. 2027 Finance Lease, Liability, to be Paid, Year Four Preferred Stock, Shares Issued Preferred Stock, Shares Issued Statement of Financial Position Location, Balance [Domain] Accounts payable Increase (Decrease) in Accounts Payable Increase (Decrease) in Accounts Payable, Total Due within one year, Fair value Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Plan Name Plan Name [Axis] Grantee Status [Domain] Entity Current Reporting Status Entity Current Reporting Status Class of Financing Receivable Class of Financing Receivable [Axis] US Government Agencies Debt Securities [Member] U.S. Government Agency Debt Securities CARES Act C A R E S Act [Member] CARES Act. Level 2 Fair Value, Inputs, Level 2 [Member] Deferred Tax Assets, Net of Valuation Allowance Gross deferred tax assets Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share Line Items. Common stock, shares authorized Common Stock, Shares Authorized Watertown, MA MASSACHUSETTS Asset Retirement Obligation [Policy Text Block] Asset Retirement Obligations Investment, Policy [Policy Text Block] Investments Product and Service Product and Service [Axis] Document Fiscal Period Focus Document Fiscal Period Focus Total lease payments Finance Lease, Liability, to be Paid Operating and finance leases, remaining lease terms Lessee Operating And Finance Leases Remaining Lease Term Lessee, operating and finance leases remaining lease term. Entity Shell Company Entity Shell Company contractual obligations Contractual Obligation Contractual Obligation, Total Grantee Status [Axis] Segment Reporting, Policy [Policy Text Block] Segment Information/Disclosure Cash and cash equivalents Cash and Cash Equivalent Cash and Cash Equivalents, at Carrying Value, Total Cash equivalents Cybersecurity Risk Management, Strategy, and Governance [Abstract] Common Stock, Shares, Issued Common Stock, Shares, Issued Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] Cybersecurity Risk Board of Directors Oversight [Text Block] Statement [Table] Statement [Table] Operating right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Internal Revenue Service (IRS) [Member] Internal Revenue Service ("IRS") Operating Loss Carryforwards, Expiration Date Federal NOL carryforward remainder amount expiration date Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value Due within one year through five years, carrying amount Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Schedule of property plant and equipment estimated useful lives. Schedule of Property Plant And Equipment Estimated Useful Lives Table Text Block Schedule of Various Types of Property and Equipment and Their Useful Lives Asset Retirement Obligation, Total Asset Retirement Obligation, Beginning Balance Asset Retirement Obligation, Ending Balance Asset Retirement Obligation Asset retirement obligation liability Statement [Line Items] Statement [Line Items] Revenue from Contract with Customer [Policy Text Block] Revenue Recognition Other Expense [Member] Restaurant-level Stock Based Compensation Included In Labor and Related Costs Entity Filer Category Entity Filer Category Reclassification, Comparability Adjustment [Policy Text Block] Reclassifications Deferred Tax Liabilities, Regulatory Assets Basis difference on fixed assets Total liabilities and stockholders' equity Liabilities and Equity Vehicles Vehicles [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price Per Share, Options exercisable Long-Lived Tangible Asset Long-Lived Tangible Asset [Axis] 2026 Finance Lease, Liability, to be Paid, Year Three Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Net change in valuation allowance Professional Fees, Travel and Other Administrative Expenses Professional Fees, Travel and Other Administrative Expenses [Member] Professional fees, travel and other administrative expenses. Operating Loss Carryforwards [Table] Follow on offering policy, policy text block. Follow On Offering Policy [Policy Text Block] Follow-On Offering Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] Proceeds from Issuance of Debt Proceeds from borrowings of debt Deferred Tax Assets, Valuation Allowance Valuation allowance recorded Valuation allowance Valuation allowance recorded Federal statutory tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Tax at federal statutory rate Shares Issued, Price Per Share Sale of stock, price per share Adjustments To Additional Paid In Capital Income Tax Deficiency From Share Based Compensations Adjustments To Additional Paid In Capital Income Tax Deficiency From Share Based Compensations Taxes paid on vested restricted stock awards Taxes paid on vested restricted stock awards Cybersecurity Risk Management Third Party Engaged [Flag] Documents Incorporated by Reference [Text Block] Documents Incorporated by Reference Effective Income Tax Rate Reconciliation, Percent Effective tax rate Effective tax rate Interest income Investment Income, Interest Income Tax Jurisdiction [Axis] Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration Federal NOL carried forward indefinitely, if not utilized Debt Securities, Available-for-Sale, Noncurrent Available-for-sale, Aggregate fair value, Non-current Geographical Geographical [Domain] Payments for purchases of liquor licenses Payments to Acquire Intangible Assets Wismettac Asian Foods Inc. Wismettac Asian Foods Inc [Member] Wismettac Asian Foods, Inc. Defined Contribution Plan [Abstract] Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Percentage of matching contribution Non-current assets: Assets, Noncurrent [Abstract] Underlying Asset Class [Domain] Schedule of Inventory, Current [Table Text Block] Schedule of Inventories Accounts Receivable, Allowance for Credit Loss, Beginning Balance Accounts Receivable, Allowance for Credit Loss, Ending Balance Accounts Receivable, Allowance for Credit Loss Allowance for doubtful accounts Additional paid-in capital Additional Paid in Capital, Common Stock Defined Contribution Plan [Text Block] Kura Sushi USA, Inc. 401(k) Plan Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Options Outstanding, Number of shares underlying outstanding options, Options granted Cybersecurity Risk Management, Strategy, and Governance [Table] Computation of Basic and Diluted Net Income (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Property, Plant and Equipment, Net [Abstract] Summary of Maturities of Assets Investments Classified by Contractual Maturity Date [Table Text Block] Net income (loss) per share attributable to common stockholders - basic Basic Earnings Per Share, Basic Earnings Per Share, Basic, Total Liquor and Beverages. Liquor and Beverages [Member] Liquor and Beverages Options Outstanding, Number of shares underlying outstanding options, Beginning balance Options Outstanding, Number of shares underlying outstanding options, Ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Stock options outstanding Liquor Licenses Policy Text Block Liquor Licenses Liquor Licenses. Revolving Credit Facility Agreement Revolving Credit Facility [Member] Retirement Plan Type [Domain] Total current liabilities Liabilities, Current Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities Lessee, Operating Lease, Liability, to be Paid, Year Five 2030 Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price Fair value of common stock Domestic Tax Jurisdiction [Member] Federal Product Concentration Risk [Member] Product Concentration Risk Claims under FLSA and applicable state laws. Claims Under FLSA And Applicable State Laws [Member] Claims Under FLSA and Applicable State Laws Consolidation Items [Domain] Line items represent organization and basis of presentation. Organization and Basis of Presentation [Line Items] Organization And Basis Of Presentation [Line Items] Stockholders' equity: Equity, Attributable to Parent [Abstract] Entity Small Business Entity Small Business Other costs. Other Costs Policy Text Block Other Costs Finance lease cost Finance Leases Cost [Abstract] Finance leases cost. Accumulated deficit Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Total Entity Well-known Seasoned Issuer Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period ptions Outstanding, Number of shares underlying outstanding options, Options canceled/forfeited Proceeds from Issuance Initial Public Offering Proceeds from the initial public offering, net of discounts and commissions Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value Total intrinsic value of stock options exercised Sales tax payable Sales and Excise Tax Payable, Current Bond premium and accrued interest amortization Bond premium and accrued interest amortization. Bond premium amortization Stock Incentive Plan Stock Incentive Plan [Member] Stock incentive plan. Stock-based Compensation Share-Based Payment Arrangement [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Defined Contribution Plan [Table] Occupancy and Related Expenses Occupancy [Member] Purchases of Equipment Purchases Of Equipment [Member] Purchases of equipment. Leases [Abstract] Class A Common Class A [Member] Class A Common Stock Lessee Lease Description [Line Items] Lessee, Lease, Description [Line Items] Amendment Flag Amendment Flag Product and Service Product and Service [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Interest on lease liabilities Finance Lease, Interest Expense Income (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Liabilities and stockholders' equity Liabilities and Equity [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by operating activities COVID-19 C O V I D19 [Member] COVID - 19. Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Common Stock Common Stock [Member] Cybersecurity Risk Role of Management [Text Block] Tax Credit Carryforward, Amount Federal tax credit carryover Option to extend, existence, lease liabilities not yet commenced, operating lease Lessee, Operating Lease, Lease Not yet Commenced, Existence of Option to Extend [true false] Defined Contribution Plan, Employer Discretionary Contribution Amount Employer plan contributions amount Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price Per Share, Options granted Lessee, Operating Lease, Liability, to be Paid, Year Three 2028 Less: accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated depreciation Debt Securities, Available-for-Sale [Line Items] Share-Based Payment Arrangement, Amount Capitalized Stock-based compensation cost capitalized to Property and equipment - net Entity Address, Address Line One Entity Address, Address Line One Deferred Tax Liabilities, Gross, Total Deferred Tax Liabilities, Gross Gross deferred tax liabilities Gross deferred tax liabilities Depreciation and amortization expenses Cost, Depreciation, Amortization and Depletion Cost, Depreciation, Amortization and Depletion, Total Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Fair Value of Stock Options Estimated on Grant Date Fair Value Hierarchy and NAV [Axis] Summary of Supplemental Balance Sheet Information Lease Supplemental Balance Sheet Information Table [Text Block] Lease,supplemental balance sheet information. Net income (loss) per Class A and Class B shares Earnings Per Share [Abstract] Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost Available-for-sale, Carrying amount Income Tax, Policy [Policy Text Block] Income Taxes Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] Other Liabilities [Member] Other Liabilities Proceeds from Sales of Assets, Investing Activities Maturities and redemption of investments Statement of Financial Position Location, Balance [Axis] Investment Type [Axis] Deferred Tax Assets, State Taxes State tax deduction Right-of-use assets Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Less: imputed interest Finance Lease, Liability, Undiscounted Excess Amount Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] Inventory Disclosure [Abstract] Unrealized gains (losses) on short-term investments OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax, Total Unrealized gain (loss) on short-term investments Document Type Document Type Performance Restricted Stock Units [Member] Performance restricted stock units. Performance Restricted Stock Units Kura Japan Kura Japan [Member] Kura Japan. Income Taxes Paid, Net, Total Income Taxes Paid, Net Cash paid for income taxes (net of refunds) Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Other Receivables Other Receivables [Member] Other receivables. Collaborative Arrangement and Arrangement Other than Collaborative Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Entity Central Index Key Entity Central Index Key Investments, Debt and Equity Securities [Abstract] Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] Operating lease cost Operating Lease Cost [Abstract] Operating lease cost. Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Increase (decrease) in cash and cash equivalents Subsequent Event Type Subsequent Event Type [Domain] Shares of common stock subject to outstanding employee stock options that were excluded from the calculation of diluted income (loss) per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Balance Sheet Related Disclosures [Abstract] Underwriter discount per share. Underwriter Discount Per Share Underwriting discount per share Common stock, par value Common Stock, Par or Stated Value Per Share Deferred Tax Assets, Tax Credit Carryforwards, General Business General business credit Total related party transactions Total restaurant operating costs Operating Costs and Expenses Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options Outstanding, Weighted Average Remaining Contractual Term (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected volatility, Maximum Available-for-sale, Fair value Debt Securities, Available-for-Sale Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract] Summary of Supplemental Disclosures of Cash Flow Information Related to Leases Lease Supplemental Disclosures Of Cash Flow Information Table [Text Block] Supplemental disclosures of cash flow information. Document Financial Statement Error Correction [Flag] Exercise of stock options, shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Options Outstanding, Number of shares underlying outstanding options, Options exercised Debt Disclosure [Abstract] Investments Investment [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Other costs Other Cost and Expense, Operating CALIFORNIA San Francisco, California Litigation Case [Domain] Advertising Cost [Policy Text Block] Advertising Costs Entity Address, State or Province Entity Address, State or Province Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number RSUs Outstanding, Number of Shares Underlying Outstanding RSUs, Ending balance RSUs Outstanding, Number of Shares Underlying Outstanding RSUs, Beginning balance Accounts and other receivables Increase (Decrease) in Accounts and Other Receivables Line of Credit Facility, Remaining Borrowing Capacity Revolving credit line Remaining availability under credit agreement Financial Liabilities Fair Value Disclosure Financial Liabilities Fair Value Disclosure, Total Financial liabilities, fair value Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Outstanding, Ending Balance Comprehensive income (loss) Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Phoenix, Arizona, Chandler, Arizona, and San Antonio, Texas Arizona And Texas [Member] Arizona and Texas. Inventory [Axis] Geographical Geographical [Axis] Credit Card Receivables Credit Card Receivable [Member] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Summary of Stock Based Compensation Expense Recognized under Stock Incentive Plan Finance Lease, Liability, to be Paid, after Year Five Thereafter Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Deferred Income Tax Assets and Liabilities Organization And Basis Of Presentation [Table] Organization And Basis Of Presentation [Table] Organization and basis of presentation. Subsequent Event Subsequent Event [Member] Property, Plant and Equipment [Abstract] Held to maturity, Amortized cost basis, Non-current Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Noncurrent Debt Securities, Available-for-Sale, Current Available-for-sale, Aggregate fair value, current Antidilutive Securities Antidilutive Securities [Axis] Operating Loss Carryforwards [Line Items] Debt Securities, Available-for-Sale, Amortized Cost, Noncurrent Available-for-sale, Amortized cost basis, Non-current Hajime Uba [Member] Hajime Uba. Hajime Uba Basis of Presentation and Significant Accounting Policies [Text Block] Basis of Presentation and Summary of Significant Accounting Policies Fair value of RSUs vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Purchase Commitment, Excluding Long-Term Commitment [Axis] Underwrites. Underwrites [Member] Underwrites Related Party Transaction Related Party Transaction [Axis] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Travel and Translation Expense Travel And Translation Expense [Member] Travel and translation expense. Cash and Cash Equivalents [Domain] Preferred stock, $0.001 par value; 1,000 shares authorized, no shares issued or outstanding Preferred Stock, Value, Issued Reimbursements by related party Selling, General and Administrative Expense Selling, General and Administrative Expense, Total Minimum [Member] Minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average exercise price per share, RSUs granted Financial Instrument [Axis] Current assets: Assets, Current [Abstract] 401(k) plan. Four Hundred One (k) Plan [Member] 401(k) Plan Class B Common Class B [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Income Tax Expense (Benefit), Continuing Operations [Abstract] Credit Facility with Kura Japan Credit facility with Kura Japan. Credit Facility With Kura Japan [Member] Segment Reporting [Abstract] Schedule of Assets Measured at Fair Value on a Recurring Basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Current liabilities: Liabilities, Current [Abstract] Beverages Beverages [Member] Beverages. Related Party Transactions [Abstract] Number of Geographic Area Number of geographic area. Number of geographic area Commitments and contingencies (Note 11) Commitments and Contingencies Lessee, Leases [Policy Text Block] Operating and Finance Leases Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted average exercise price per share, RSUs outstanding Endining Weighted average exercise price per share, RSUs outstanding Beginning Asset under Construction [Member] Construction Of New Restaurants Corporate-level Stock-based Compensation Included In General and Administrative Expenses General and Administrative Expenses General and Administrative Expense [Member] Total lease liabilities Present value of lease liabilities Operating Lease, Liability Auditor Firm ID Treasury Bills US Treasury Bill Securities [Member] Concentration Risk Benchmark [Axis] Lessee Lease Description [Table] Lessee, Lease, Description [Table] Finance leases Finance Lease, Weighted Average Discount Rate, Percent Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Change in valuation allowance Non-current liabilities: Liabilities, Noncurrent [Abstract] Net income (loss) Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Held to maturity debt securities with an amortized cost basis Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss, Total Held to maturity, carrying amount Cybersecurity Risk Management Positions or Committees Responsible [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Basic Weighted average common shares outstanding - basic Document Information [Line Items] Document Information [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeited, Weighted Average Remaining Contractual Term Share-based compensation arrangement by share-based payment award, options, forfeited, weighted average remaining contractual term. Options Outstanding, Weighted Average Remaining Contractual Term, Options Canceled/forfeited (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Options Outstanding, Aggregate Intrinsic Value, Options exercisable Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract] Available-for-sale: Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent Stock-based compensation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Summary of Reconciliation of Statutory Federal Income Tax Rate Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Long-Lived Tangible Asset Long-Lived Tangible Asset [Domain] Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] Loss Contingency Accrual, Provision Accrued liability paid Deferred tax liabilities right-of-use assets. Deferred Tax Liabilities Right Of Use Assets Right-of-use assets Deposits and other assets. Deposits and Other Assets [Table] Related Party Transactions Related Party Transactions Disclosure [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total Noncash investing activities Noncash Investing Activities [Abstract] Noncash investing activities abstract. Total stockholders' equity Beginning balances Ending balances Equity, Attributable to Parent Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Property Subject to or Available for Operating Lease, Number of Units Number of additional operating leases related to restaurants Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Statement of Stockholders' Equity [Abstract] Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Held to maturity, Unrealized holding losses, Non-Current Held to maturity, Unrealized holding losses, Non-current Travel and Other Administrative Expenses Travel And Other Administrative Expenses [Member] Travel and other administrative expenses. Use of Estimates Use of Estimates, Policy [Policy Text Block] Deposits and other assets. Deposits and Other Assets [Abstract] Defined Benefit Plan Disclosure [Line Items] Leasehold Improvements Leasehold Improvements [Member] Entity Address, Address Line Two Entity Address, Address Line Two Fair Value Measurements Fair Value Disclosures [Text Block] Summary of Restricted Stock Unit (RSU) Activity Under Stock Incentive Plan Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Due from affiliate Other current assets Other Assets, Current Accrued expenses and other current liabilities Accrued Liabilities and Other Liabilities Inventory, Current [Table] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Plan Name Plan Name [Domain] Interest expense Interest Expense, Operating and Nonoperating Interest Expense, Total Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Receivable [Policy Text Block] Accounts and Other Receivables Entity [Domain] Credit Facility Credit Facility [Axis] Cost of goods and services sold Cost of Product and Service Sold Cost of Goods and Services Sold, Total Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block] Impairment, Long-Lived Asset, Held-for-Use, Total Impairment, Long-Lived Asset, Held-for-Use Impairment of long-lived assets Impairment of long-lived assets, net Increase (Decrease) in Accrued Salaries Salary and wages payable State Current State and Local Tax Expense (Benefit) Labor and Related Costs Labor And Related Costs [Member] Labor and related costs. Cybersecurity Risk Management Expertise of Management Responsible [Text Block] 2024 Finance Lease, Liability, to be Paid, Year One Share-Based Payment Arrangement, Expensed and Capitalized, Amount Total stock-based compensation Percentage of eligible participants annual compensation. Percentage of Eligible Participants Annual Compensation Percentage of eligible participants annual compensation Certificates of Deposit Certificates of Deposit [Member] Amended and Restated Exclusive License Agreement License Agreement [Member] License agreement. Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Effects of COVID-19 Effects Of C O V I D Nineteen Policy [Text Block] Effects of COVID-19. Environmental Remediation Contingency Environmental Remediation Contingency [Axis] Related Party Related and Nonrelated Parties [Axis] Outstanding balance Line of Credit Facility, Average Outstanding Amount Robert Kluger [Member] Robert Kluger. Robert Kluger Capitalized to Property and Equipment. Capitalized to Property and Equipment [Member] Amount Capitalized to Property and Equipment - net Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share. Entity Address, City or Town Entity Address, City or Town Number of Reportable Segments Number of reportable segment Security Exchange Name Security Exchange Name Credit Facility Credit Facility [Domain] Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Other items Property and equipment Property and equipment - gross Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Total Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Ending Balance Deposits and other assets. Deposits and Other Assets [Table Text Block] Schedule of Deposits and Other Assets Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest US Total Concentration Risk Type [Domain] 2028 Finance Lease, Liability, to be Paid, Year Five Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Inventories Inventory, Net Inventory, Net, Total Total inventories Credit card and other receivables member. Credit Card and Other Receivables [Member] Credit Card and Other Receivables Share-Based Payment Arrangement, Nonemployee [Member] Stock Options Granted to Non-Employees Statistical Measurement Statistical Measurement [Domain] Other Costs Other costs. Other Costs [Member] Operating and finance leases, remaining lease start range terms description Operating And Finance Leases Remaining Lease Start Range Terms Description Operating and finance leases remaining lease start range terms description. Total current assets Assets, Current Share-Based Payment Arrangement, Expense Stock-based compensation expense Stock-based compensation, net of amounts capitalized Amounts unpaid for purchases of property and equipment Noncash or Part Noncash Acquisition, Fixed Assets Acquired Document Period End Date Document Period End Date Fair Value Hierarchy and NAV [Domain] Certificate of deposit Interest-Bearing Domestic Deposit, Certificates of Deposits ICFR Auditor Attestation Flag Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Options Outstanding, Number of shares underlying outstanding options, Options exercisable Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) Impairment of liquor licenses Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain (Loss) on Disposition of Property Plant Equipment, Total Salaries and wages payable Accrued Salaries, Current Statement of Financial Position [Abstract] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Receivables, Net, Current [Abstract] Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive income: Class of Stock Class of Stock [Axis] Cybersecurity Risk Management, Strategy, and Governance [Line Items] Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Total liabilities Liabilities Restaurant operating costs: Operating Costs and Expenses [Abstract] Financial Instruments [Domain] Number of former employees initiated arbitration against company. Number of former employees initiated arbitration against company Number of former employees initiated arbitration against company Lessee, Operating Lease, Liability, to be Paid, Year Two 2027 Advertising Expense Advertising expenses Restricted Stock Awards Restricted Stock Restricted Stock [Member] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Indefinite-Lived Intangible Assets, Major Class Name [Domain] Prepaid Expense and Other Assets, Current [Abstract] Weighted Average Number of Shares Outstanding, Diluted, Total Weighted average shares outstanding - diluted Diluted Weighted Average Number of Shares Outstanding, Diluted Entity File Number Securities Act File Number Cover [Abstract] Deferred Federal, State and Local, Tax Expense (Benefit) [Abstract] Deferred: Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, Minimum US Treasury Notes Securities [Member] Treasury Notes Total prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Receivables Net Current [Table] Receivables Net Current [Table] Receivables net current. Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period RSUs Outstanding, Number of Shares Underlying Outstanding RSUs, RSUs canceled/forfeited Acquisition of finance leases Lease Obligation Incurred Environmental Remediation Contingency Environmental Remediation Contingency [Domain] Investments [Domain] Balance Sheet Components Supplemental Balance Sheet Disclosures [Text Block] Summary of Maturities of Lease Liabilities Net of Lease Receivables Schedule Of Maturities Of Lease Liabilities Table [Text Block] Schedule maturities of lease liabilities. Revenue Benchmark [Member] Sales Revenue Net Treasury Notes US Treasury Securities [Member] Sale of Stock [Domain] Segment Information Segment Reporting Disclosure [Text Block] General and administrative expenses General and Administrative Expense General and Administrative Expense, Total Offering of common stock policy. Offering Of Common Stock Policy Policy Text Block Offering of Class A Common Stock First amendment. First Amendment [Member] First Amendment Deferred Tax Assets, Other Other Current Federal, State and Local, Tax Expense (Benefit) [Abstract] Current: Schedule Of Earnings Per Share Diluted By Common Class [Table] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Revolving credit line interest rate Line of Credit Facility, Interest Rate During Period Operating lease cost Operating Lease, Expense Description of depreciation and amortization on property and equipment Description Of Depreciation And Amortization On Property And Equipment Description of depreciation and amortization on property and equipment. Document Financial Statement Restatement Recovery Analysis [Flag] Property, Plant and Equipment, Useful Life Property and equipment, useful life Estimated useful lives New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Pronouncements Total finance lease cost Finance Lease Cost Finance lease cost. Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Performance restricted stock units, vesting period Stock options, RSUs and PSUs granted, vesting period Number of other current and former employees asserting claims against company. Number Of Other Current And Former Employees Asserting Claims Against Company Number of other current and former employees asserting claims against company Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, Minimum Due from affiliate Other Receivables, Net, Current Other Receivables, Net, Current, Total Reconciliation to Net Income (Loss) [Abstract] Reconciliation to net income (loss). Royalty fee of net sales Royalty Fee Percentage Of Net Sales Royalty fee percentage of net sales. Lessee, Operating Lease, Term of Contract Short-term lease, term of contract Long-term investments Long-Term Investments Long-Term Investments, Total Common stock, shares outstanding Beginning balance, shares Ending balance, shares Common Stock, Shares, Outstanding Lease liabilities – current Operating lease liabilities – current Operating Lease, Liability, Current Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Depreciation and amortization expenses Depreciation and amortization Depreciation, Depletion and Amortization Depreciation, Depletion and Amortization, Total Cybersecurity Risk Management Processes Integrated [Flag] Document Transition Report Document Transition Report Stock-based compensation capitalized to property and equipment, net. Stock-based compensation capitalized to property and equipment, net Stock-based compensation capitalized to property and equipment- net Deferred Tax Assets, Net, Total Deferred Tax Assets, Net Schedule of Related Party Transactions Due to and from Affiliates Schedule Of Due To And From Related Party Transactions Table [Text Block] Schedule of related party transactions due to and from affiliates. Short-term investments Short-Term Investments Short-Term Investments, Total Total operating expenses Operating Expenses Debt Securities, Held-to-Maturity, Fair Value Held to maturity debt securities with an amortized cost basis, fair value Held to maturity, Fair value Lessee, Operating Leases [Text Block] Leases Available-for-sale, Amortized cost basis, current Debt Securities, Available-for-Sale, Amortized Cost, Current Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Summary of Components of Provision for Income Taxes State net operating loss ("NOL") carryover Deferred Tax Assets, Operating Loss Carryforwards, State and Local Statement of Cash Flows [Abstract] Current Federal Tax Expense (Benefit) Federal Issuance of common stock in connection with follow-on public offering, net of underwriter discounts and issuance costs Stock Issued During Period, Value, New Issues Share-Based Payment Arrangement, Option, Activity [Table Text Block] Summary of Stock Option Activity under Stock Incentive Plan Money market fund and term deposit. Money Market Fund And Term Deposit [Member] Money Market Funds and Term Deposits Royalty Payments Royalty Payments [Member] Royalty payments. Income (Loss) Per Share Loss Per Share Earnings Per Share [Text Block] Shares, Issued Shares issued Computer Equipment Computer Equipment [Member] Cybersecurity Risk Management Processes Integrated [Text Block] Investment [Table Text Block] Summary of Investments Deloitte & Touche LLP. Deloitte & Touche LLP [Member] Deloitte & Touche LLP Net income (loss) Net income (loss) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Options Outstanding, Aggregate Intrinsic Value Inventories Increase (Decrease) in Inventories Increase (Decrease) in Inventories, Total Second amendment. Second Amendment [Member] Second Amendment Inventory [Line Items] Total operating lease cost Operating Lease, Cost KPMG LLP. KPMG LLP [Member] KPMG LLP Lessee Operating Lease Lease Not Yet Commenced Liability Lessee operating lease, lease not yet commenced, liability. Operating leases not yet commenced, liability Operating lease liability not yet commenced, liability Sales taxes. Sales Taxes Policy Text Block Sales Taxes Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend rate Expected dividend Payroll taxes Accrued Payroll Taxes Schedule of Accounts and Other Receivables Accounts Receivable, Allowance for Credit Loss [Table Text Block] Amount deposited into an account controlled by a settlement administrator Litigation Settlement, Amount Awarded to Other Party Operating cash flows paid for operating lease liabilities Operating Lease, Payments Increase decrease deferred rent and tenant allowance. Increase Decrease Deferred Rent And Tenant Allowance Deferred rent and tenant allowances Assets Assets [Abstract] Income Tax Authority, Name [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Construction in Progress Construction in Progress [Member] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Repayments of Debt Repayment of borrowings outstanding Repayment of debt Repayment of debt Document Fiscal Year Focus Document Fiscal Year Focus Concentration Risk Benchmark [Domain] First Amendment and Second Amendment First Amendment And Second Amendment [Member] First amendment and second amendment. Purchase Commitment Purchase Commitment [Member] Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Accounts payable Accounts Payable, Current Accounts Payable, Current, Total Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value Fair value of options vested Weighted Average Discount Rate Weighted Average Discount Rate [Abstract] Weighted average discount rate. Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Summary of Components of Income (Loss) Before Provision for Income Taxes Defined Contribution Plan, Employer Matching Contribution, Percent of Match Percentage of matching contribution Deferred Federal Income Tax Expense (Benefit) Federal Payments to Acquire Assets, Investing Activities Purchases of investments Components of Deferred Tax Assets [Abstract] Deferred tax assets: Applicable federal rate. Applicable Federal Rate Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurements Tax Credit Carryforward, Expiration Date Federal tax credit expiration date Due from affiliate Increase (Decrease) Due from Affiliates Operating lease liabilities not yet commenced, lease term Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Proceeds from Stock Options Exercised Proceeds from stock option exercises Fair Value Disclosures [Abstract] Commitments and Contingencies Disclosure [Abstract] Payment of costs related to follow-on offering. Payment Of Costs Related To Follow On Offering Payments of costs related to the follow-on offering Lessee, Operating Lease, Liability, to be Paid, Year One 2026 Net income (loss) attributable to common stockholders - basic Net Income (Loss) Available to Common Stockholders, Basic Net Income (Loss) Available to Common Stockholders, Basic, Total Net loss Contingent rent expense. Contingent Rent Expense Contingent rent expense Due to affiliate Increase (Decrease) in Due to Affiliates Revolving credit line Long-Term Line of Credit Long-Term Line of Credit, Total Outstanding borrowings Lessee, Operating Lease, Liability, to be Paid, after Year Five Thereafter Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Unrecognized stock-based compensation Financial assets, fair value Total assets at fair value Assets, Fair Value Disclosure Assets, Fair Value Disclosure, Total Sale of Stock [Axis] Concentration Risk, Percentage Concentration risk, percentage Sales tax payable Increase Decrease In Sales Tax Payable Increase decrease in sales tax payable. Furniture, fixtures and equipment. Furniture Fixtures and Equipment [Member] Furniture, Fixtures and Equipment Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Non-roth after-tax basis. Non-Roth After-tax Basis [Member] Non-Roth After-tax Basis Finance leases Finance Lease, Weighted Average Remaining Lease Term Title of 12(b) Security Title of 12(b) Security Schedule of Segment Reporting Information, by Segment [Table] Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price Per Share, Options canceled/forfeited Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted average exercise price per share, RSUs canceled/forfeited Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Due within one year through five years, carring amount Related Party Related and Nonrelated Parties [Domain] Due to affiliate Due to Affiliate Due to affiliate. Income Taxes Income Tax Disclosure [Text Block] Percentage of common stock owned. Percentage Of Common Stock Owned Percentage of common stock owned by directors, officers or persons Collaborative Arrangement and Arrangement Other than Collaborative [Table] Document Information [Table] Document Information [Table] Other liabilities Other Liabilities, Noncurrent Lease Assets Lease Assets [Member] Lease assets. Legal Entity [Axis] Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Due within one year through five years, Fair value Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Property, Plant and Equipment [Table Text Block] Schedule of Property and Equipment - Net Options Outstanding, Weighted Average Exercise Price Per Share, Beginning balance Options Outstanding, Weighted Average Exercise Price Per Share, Ending balance Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Due within one year through five years, Fair value Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Income Tax Disclosure [Abstract] Fair Value, Recurring and Nonrecurring [Table] Liquor license. Liquor License [Member] Liquor Licenses Unrecognized Tax Benefits, Beginning Balance Unrecognized Tax Benefits, Ending Balance Unrecognized Tax Benefits Unrecognized tax benefits Additional Paid-in Capital [Member] Additional Paid-in Capital Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Operating lease liabilities Increase Decrease In Operating Lease Liabilities Increase decrease in operating lease liabilities. Measurement Frequency [Domain] Income Statement Location Statement of Income Location, Balance [Axis] Trading Symbol Trading Symbol Schedule Of Related Party Transactions By Related Party [Table] Related Party Transaction [Table] Effective income tax rate reconciliation employer tip credit adjustments. Effective Income Tax Rate Reconciliation Employer Tip Credit Adjustments Employer tip credit Concentration of significant suppliers. Concentration of Significant Suppliers Policy [Policy Text Block] Concentration of Significant Suppliers Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk-free interest rate, Maximum Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Due within one year, carrying amount Subsequent Event Type Subsequent Event Type [Axis] Percentage of income tax likely to be realized. Percentage Of Income Tax Likely To Be Realized Income tax benefit being realized Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected term (in years) Fair Value Recurring Fair Value, Recurring [Member] Entity Ex Transition Period Entity Ex Transition Period Total lease payments Lessee, Operating Lease, Liability, to be Paid Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Retained Earnings (Accumulated Deficit) Equity Components [Axis] Current Federal, State and Local, Tax Expense (Benefit) Total current Equity Component Equity Component [Domain] Investments Investments Investments, Total Document Annual Report Deposits [Member] Deposits and Other IPO [Member] Initial Public Offering Stock Issued During Period, Shares, Employee Stock Purchase Plans Employee stock plan, shares Earnings Per Share Diluted [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Depreciation and amortization expenses Depreciation, Depletion and Amortization, Nonproduction Depreciation, Depletion and Amortization, Nonproduction, Total Accounts and other receivables Accounts and Other Receivables, Net, Current Deferred Tax Assets, Operating Loss Carryforwards, Domestic Federal net operating loss ("NOL") carryover Deferred tax assets lease liabilities. Deferred Tax Assets Lease Liabilities Lease liabilities Maximum Maximum [Member] Maximum [Member] Statistical Measurement Statistical Measurement [Axis] Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price Per Share, Options exercised Prepaid expenses Prepaid Expense, Current Prepaid Expense, Current, Total Common Stock, Value, Issued Common stock Employer Matching Contributions Vesting Period Employer matching contributions vesting period Employer matching contributions vesting period. Net income (loss) attributable to common stockholders - diluted Net Income (Loss) Available to Common Stockholders, Diluted Net Income (Loss) Available to Common Stockholders, Diluted, Total Repayment of principal on finance leases Finance Lease, Principal Payments Payments for initial direct costs Payments for Leasing Costs, Commissions, and Tenant Improvements Payments for Leasing Costs, Commissions, and Tenant Improvements, Total Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Impairment of Long-lived Assets State tax, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Entity Public Float Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Inventory [Domain] Payment, Tax Withholding, Share-Based Payment Arrangement Taxes paid on vested restricted stock awards Taxes paid on vested restricted stock awards Underlying Asset Class [Axis] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Entity Registrant Name Entity Registrant Name Debt Debt Disclosure [Text Block] Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Available-for-sale, Unrealized holding losses, current Available-for-sale, Unrealized holding losses, current Entity Voluntary Filers Deferred State and Local Income Tax Expense (Benefit) State Cybersecurity Risk Management Positions or Committees Responsible [Flag] Income tax expense Income Tax Expense (Benefit) Total Income tax provision Measurement Frequency [Axis] Settlement amount Loss Contingency Settlement Amount Loss contingency settlement amount. Debt Securities, Held-to-Maturity, Fair Value, Current Held to maturity, Aggregate fair value, Non-current Mutual Trading Co., Inc. Mutual Trading Co., Inc [Member] Mutual Trading Co., Inc Proceeds from Issuance of Common Stock Proceeds from offering Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentration of Credit Risk Compensation Related Costs, Policy [Policy Text Block] Stock-based Compensation Accumulated other comprehensive income into earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss Consolidation Items [Axis] Payments for property and equipment Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment, Total Gain on short-term investments Gain (Loss) on Investments Gain (Loss) on Investments, Total Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Performance restricted stock units granted RSUs Outstanding, Number of Shares Underlying Outstanding RSUs, RSUs granted Total assets Assets Inventory, Policy [Policy Text Block] Inventories Schedule Of Property Plant And Equipment [Table] Property, Plant and Equipment [Table] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Options Outstanding, Weighted Average Remaining Contractual Term, Options exercisable (Years) Class of Financing Receivable Class of Financing Receivable [Domain] Income Statement [Abstract] Retirement Plan Name [Domain] Dilutive effect of stock-based awards Incremental Common Shares Attributable To Dilutive Effect Of Stock Based Awards Incremental common shares attributable to dilutive effect of stock-based awards. Brent Takao Brent Takao [Member] Brent Takao. Expatriate Salaries Expense Expatriate Salaries Expense [Member] Expatriate salaries expense. Issuance of common stock in connection with follow-on public offering, net of underwriter discounts and issuance costs, shares Number of shares issued Issuance of common stock, Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Performance restricted stock units vested RSUs Outstanding, Number of Shares Underlying Outstanding RSUs, RSUs vested Local government requirements. Local Government Requirements [Member] Local Government Requirements Net income (loss) per share attributable to common stockholders - diluted Diluted Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Schedule of Segment Reporting Information, by Segment [Table Text Block] Summary of Reported Segment Sales and Expenses Operating Segments [Member] Operating Segment Purchase Commitment, Excluding Long-Term Commitment [Domain] Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] City Area Code City Area Code Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax, Total Other comprehensive income (loss) Auditor Name Food. Food [Member] Food Taxes paid on vested restricted stock awards, shares Adjustments To Additional Paid In Capital Shares Income Tax Deficiency From Share Based Compensation Adjustments to additional paid in capital shares income tax deficiency from share based compensation. Credit facility maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Deferred Tax Assets, Tax Credit Carryforwards, Total Deferred Tax Assets, Tax Credit Carryforwards NOL carryover Variable lease cost Variable Lease, Cost Pre-tax and roth basis. Pre-tax and Roth Basis [Member] Pre-tax and Roth Basis Stock Issued During Period, Value, Employee Stock Purchase Plan Employee stock plan Litigation Case [Axis] Operating leases Operating Lease, Weighted Average Remaining Lease Term Segment Reporting Information [Line Items] Lease, Cost, Total Lease, Cost Lease expense Retirement Plan Name [Axis] Investments [Abstract] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Total property and equipment – net Property and equipment – net Property, Plant and Equipment, Net Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Cash and cash equivalents, beginning of year Cash and cash equivalents, end of year Operating income (loss) Operating Income (Loss) (Accumulated Deficit) Retained Earnings [Member] Deposits and other assets Increase (Decrease) in Deposit Assets Increase (Decrease) in Deposit Assets, Total Cash and Cash Equivalents [Axis] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeited, Intrinsic Value Share-based compensation arrangement by share-based payment award, options, forfeited, intrinsic value. Options Outstanding, Aggregate Intrinsic Value, Options Canceled/forfeited Share-Based Payment Arrangement, Noncash Expense Share-Based Payment Arrangement, Noncash Expense, Total Stock-based compensation, net of amounts capitalized Payments of Stock Issuance Costs Payments to directors, officers or persons owning 10% or more of common stock to associates or affiliates Payments of costs related to the initial public offering Operating leases Operating Lease, Weighted Average Discount Rate, Percent Lease liabilities – non-current Operating lease liabilities – non-current Operating Lease, Liability, Noncurrent Level 1 Fair Value, Inputs, Level 1 [Member] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by financing activities Summary of Lease Related Costs Lease, Cost [Table Text Block] Schedule of Prepaid Expenses and Other Current Assets Schedule Of Prepaid Expenses And Other Current Assets Table [Text Block] Schedule of prepaid expenses and other current assets. Auditor Location Pre-tax catch-up and roth catch-up basis. Pre-tax Catch-up and Roth Catch-up Basis [Member] Pre-tax Catch-up and Roth Catch-up Basis Initial public offering. Initial Public Offering [Policy Text Block] Initial Public Offering Other expense (income): Nonoperating Income (Expense) [Abstract] Lease Receivables Lease Receivables [Member] Lease receivables. Income Tax Jurisdiction [Domain] Debt Securities, Available-for-Sale [Table] Entity Interactive Data Current Entity Interactive Data Current Follow on offering. Follow On Offering [Member] Follow-On Offering Income Statement Location Statement of Income Location, Balance [Domain] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Furniture and Fixtures Furniture and Fixtures [Member] Components of Deferred Tax Liabilities [Abstract] Deferred tax liabilities: Deferred Federal, State and Local, Tax Expense (Benefit) Total deferred Entity Tax Identification Number Entity Tax Identification Number J F C International Inc [Member] J F C International Inc [Member] JFC International Inc. Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization and Description of Business Income Tax Authority, Name [Domain] Debt Securities, Held-to-Maturity, Maturity [Abstract] Held to maturity: Local Phone Number Local Phone Number Related Party Transaction Related Party Transaction [Domain] Receivables Net Current [Line Items] Receivables Net Current [Line Items] Receivables net current. Due to affiliate Due to affiliate Other Liabilities, Current Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average Class A and Class B shares Auditor Opinion [Text Block] 2025 Finance Lease, Liability, to be Paid, Year Two Proceeds from follow-on public offering net of discounts and commissions. Proceeds From Follow On Public Offering Net Of Discounts And Commissions Proceeds from follow-on public offering, net of discounts and commissions Food and Beverage Costs Food and Beverage [Member] Sales Revenue from Contract with Customer, Excluding Assessed Tax Lessee, Operating Lease, Liability, to be Paid, Year Four 2029 D&O Expenses D And O Expenses [Member] D&O expenses. Class of Stock Class of Stock [Domain] Recent events concerning the company's financial position. Recent Events Concerning Companys Financial Position [Policy Text Block] Recent Events Concerning the Company's Financial Position Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Plan authorized shares to be granted Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Unvested stock options expected to be recognized on a straight-line basis over a weighted average period Weighted Average Remaining Lease Term (Years) Weighted Average Remaining Lease Term [Abstract] Weighted average remaining lease term. Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Percentage of eligible participants annual compensation Affiliated Entity [Member] Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-Lived Intangible Assets [Axis]