75000 - Document - Document and Entity Information
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75010 - Statement - Condensed Consolidated Balance Sheets
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75020 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)
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75030 - Statement - Condensed Consolidated Statements of Comprehensive Loss
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75040 - Statement - Condensed Consolidated Statements of Comprehensive Loss 2
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75050 - Statement - Condensed Consolidated Statements of Changes in Permanent Equity (Deficit)
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75060 - Statement - Condensed Consolidated Statements of Changes in Permanent Equity (Deficit) (Parenthetical)
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75070 - Statement - Condensed Consolidated Statements of Cash Flows
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995455 - Disclosure - Organization and Description of Business
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995465 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies
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995475 - Disclosure - Assets and Liabilities Held for Sale
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995485 - Disclosure - Fair Value of Financial Instruments
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995495 - Disclosure - Property and Equipment, Net
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995505 - Disclosure - Gift Cards
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995515 - Disclosure - Line of Credit
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995525 - Disclosure - Notes Payable
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995535 - Disclosure - Related Party Notes Payable
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995545 - Disclosure - Leases
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995555 - Disclosure - Commitments and Contingencies
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995565 - Disclosure - Income Taxes
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995575 - Disclosure - Non-controlling Interest
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995585 - Disclosure - Other Related-Party Transactions
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995595 - Disclosure - Net Loss per Share
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995605 - Disclosure - Stock-Based Compensation
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995615 - Disclosure - Cash Paid for Common Stock Purchased
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995625 - Disclosure - Segment Information
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995635 - Disclosure - Subsequent Events
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995645 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies)
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995655 - Disclosure - Organization and Description of Business (Tables)
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995665 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables)
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995675 - Disclosure - Fair Value of Financial Instruments (Tables)
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995685 - Disclosure - Property and Equipment, Net (Tables)
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995695 - Disclosure - Gift Cards (Tables)
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995705 - Disclosure - Equity Method Investment (Tables)
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995715 - Disclosure - Notes Payable (Tables)
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995725 - Disclosure - Related Party Notes Payable (Tables)
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995735 - Disclosure - Leases (Tables)
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995745 - Disclosure - Net Loss per Share (Tables)
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995755 - Disclosure - Stock-Based Compensation (Tables)
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995765 - Disclosure - Segment Information (Tables)
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995775 - Disclosure - Organization and Description of Business - Additional Information (Details)
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995785 - Disclosure - Organization and Description of Business - Summary of List of Entities in Operation (Details)
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995795 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)
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995805 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Investments in Debt Securities (Details)
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995815 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Estimated Useful Service Lives (Details)
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995825 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Other Assets (Details)
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995835 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Other Current Liabilities (Details)
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995845 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Total Interest Cost to Interest (Expense) Income, Net (Details)
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995855 - Disclosure - Assets and Liabilities Held for Sale - Additional Information (Details)
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995865 - Disclosure - Fair Value of Financial Instruments - Summay of Financial Assets to Fair Value Measurement Valued Using Observable Inputs (Details)
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995875 - Disclosure - Property and Equipment, Net - Summary of Costs and Related Accumulated Depreciation and Amortization (Details)
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995885 - Disclosure - Property and Equipment, Net - Additional Information (Details)
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995895 - Disclosure - Gift Cards - Schedule of Gift Cards (Details)
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995905 - Disclosure - Line of Credit - Additional Information (Details)
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995915 - Disclosure - Notes Payable - Additional Information (Details)
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995925 - Disclosure - Notes Payable - Aggregate Maturities of Notes Payable (Details)
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995935 - Disclosure - Notes Payable - Aggregate Maturities of Notes Payable (Details) 2
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995945 - Disclosure - Related Party Notes Payable - Additional Information (Details)
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995955 - Disclosure - Leases - Additional Information (Details)
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995965 - Disclosure - Leases - Summary of Operating Lease Activity to the Income Statement - Operating Lease Cost (Details)
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995975 - Disclosure - Leases - Summary of Operating Lease Activity to the Balance Sheet Statement - Supplemental Balance Sheet Information Related to Leases (Details)
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995985 - Disclosure - Leases - Summary of Finance Lease Activity to the Balance Sheet Statement - Finance Lease Assets, Net (Details)
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995995 - Disclosure - Leases - Summary of Finance Lease Activity to the Balance Sheet Statement - Finance Lease Liabilities (Details)
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996005 - Disclosure - Leases - Summary of Operating and Finance Lease Activity to the Income Statement and Balance sheet- Weighted Average Remaining Lease Term and Discount Rate (Details)
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996015 - Disclosure - Leases - Schedule Maturities of Lease Liabilities (Details)
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996025 - Disclosure - Leases - Schedule Maturities of Lease Liabilities (Details) 2
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996035 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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996045 - Disclosure - Income Taxes - Additional Information (Details)
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996055 - Disclosure - Non-controlling Interest - Additional Information (Details)
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996065 - Disclosure - Other Related-Party Transactions - Additional Information (Details)
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996075 - Disclosure - Net Loss per Share - Calculation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share (Details)
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996085 - Disclosure - Net Loss per Share - Additional Information (Details)
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996095 - Disclosure - Stock-Based Compensation - Additional Information (Details)
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996105 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Unit Awards Activity (Details)
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996115 - Disclosure - Cash Paid for Common Stock Purchased - Additional Information (Details)
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996125 - Disclosure - Segment Information - Additional Information (Details)
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996135 - Disclosure - Segment Information - Schedule of Segment Information (Details)
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996145 - Disclosure - Subsequent Events - Additional Information (Details)
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Depreciation and amortization - corporate.
Depreciation And Amortization Corporate
Depreciation and amortization - corporate
GEN Tucson [Member]
GEN Tucson.
Finance Lease, Liability
Total finance lease liabilities
Occupancy and related expenses, and General and administrative expenses.
Occupancy And Related Expenses, And General And administrative Expenses [Member]
Occupancy and Related Expenses, and General and Administrative Expenses
Entity Incorporation, State or Country Code
Finance Lease, Liability, to be Paid, Year Four
2030
Statement of Financial Position Location, Balance [Domain]
Increase (Decrease) in Accounts Payable, Total
Increase (Decrease) in Accounts Payable
Accounts payable
GEN Sacramento, LP.
GEN Sacramento, LP [Member]
Related party notes payable.
Related Party Notes Payable Disclosure [Text Block]
Related Party Notes Payable
Less current portion of notes payable
Notes Payable, net of current portion
Long term portion
Notes Payable, net of current portion
Entity Current Reporting Status
GEN Edison [Member]
GEN Edison.
Level 2
Fair Value, Inputs, Level 2 [Member]
GEN Pearlridge, LLC.
GEN Pearlridge, LLC [Member]
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Common Stock, Shares Authorized
Common stock, shares authorized
GEN Grills [Member]
GEN Grills.
GEN Chandler, LLC.
GEN Chandler LLC [Member]
Product and Service [Axis]
Document Fiscal Period Focus
Finance Lease, Liability, to be Paid
Total undiscounted lease payments
Debt Instrument, Interest Rate, Stated Percentage
Loan agreement, interest rate
Notes payable, interest rate
Revenue from Contract with Customer [Abstract]
Entity Shell Company
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalent
Cash and cash equivalents
Cash and Cash Equivalents, Carrying Value/Amortized Cost
Schedule of Maturities of Long-Term Debt [Table Text Block]
Schedule of Aggregate Maturities of Notes Payable
Notes Payable, Current, Total
Notes Payable, Current
Notes payable, current
Notes payable to related parties, current
GEN Texas, LLC.
GEN Texas, LLC [Member]
Common Stock, Shares, Issued
Common stock, shares issued
TEXAS
TX
Asset Class [Domain]
Statement [Table]
Restaurant revitalization fund grant income deferred
Restaurant Revitalization Fund Grant Income deferred
Restaurant revitalization fund grant income deferred
NEW JERSEY
NJ
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Leased assets obtained in exchange for new operating lease liabilities
GEN Austin, LP [Member]
GEN Austin, LP.
Noncontrolling Interest [Table]
GEN Tempe.
GEN Tempe [Member]
Statement [Line Items]
Warrant [Member]
Warrant
Entity Filer Category
Liabilities and Equity
Total liabilities and stockholders' equity (deficit)
Total liabilities, mezzanine equity, and permanent equity
Debt Instrument [Line Items]
Notes Payable [Line item]
Long-Term Debt, Current Maturities
Less current portion of notes payable
Notes payable, current maturities, total
Less current portion of notes payable
Increase (Decrease) in Employee Related Liabilities, Total
Increase (Decrease) in Employee Related Liabilities
Accrued salaries and benefits
Long-Term Debt, Maturity, Year Three
2025
2029
Long-Lived Tangible Asset [Axis]
Finance Lease, Liability, to be Paid, Year Three
2029
Debt Instrument, Frequency of Periodic Payment
Loan agreement, frequency of payment
Depreciation And Amortization Excluding Corporate
Depreciation and amortization excluding corporate.
Depreciation and amortization
GRM.
GRM [Member]
GEN Henderson.
GEN Henderson [Member]
Cash and Cash Equivalents, Fair Value Disclosure
Cash and Cash Equivalents, Total
Stock issued price per share
Shares Issued, Price Per Share
Subsequent Event [Line Items]
Members' Equity [Abstract]
Mezzanine equity
Share Repurchase Program [Table]
HAWAII
HI
Goodwill, Total
Goodwill, Beginning Balance
Goodwill, Ending Balance
Goodwill
Goodwill
Effective Income Tax Rate Reconciliation, Percent, Total
Effective Income Tax Rate Reconciliation, Percent
Tax benefit
Effective income tax rates
Income Taxes Paid
Cash paid for taxes
Deposits in excess of federally insured amounts
Deposits In Excess Of Federally Insured Amounts
Deposits in excess of federally insured amount
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year
2026
Treasury Stock, Common, Value
Treasury stock
Geographical [Domain]
Restaurant revitalization fund grant income
Restaurant Revitalization Fund Grant Income
Restaurant revitalization fund grant income
Redeemable units interest percentage
Redeemable units interest percentage.
GEN Seattle LP
GEN Seattle LP [Member]
Gen Seattle, LP [Member]
Additional Paid in Capital, Common Stock
Additional paid-in capital
Other current liabilities.
Other Current Liabilities [Line Items]
Noncontrolling Interest [Abstract]
NEVADA
NV
Related Party [Member]
Related Party
GEN Westgate.
GEN Westgate [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Vesting [Domain]
Nonrelated Party [Member]
Non-related Party
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Calculation of Numerator and Denominator Used in Calculation of Basic and Diluted Net Income Per Share
GEN La Jolla [Member]
GEN La Jolla.
Employee retention credits
Employee Retention Credits
Employee retention credits
Investment, Name [Axis]
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
Net loss per share of Class A common stock - basic
Net loss per share of Class A common stock - basic
GEN Tustin.
GEN Tustin [Member]
Investments, Gross Unrealized Gains
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total
Foreign currency translation adjustment
Foreign currency translation adjustment
Liabilities, Current
Total current liabilities
Current liabilities
Unrecognized Tax Benefits, Income Tax Penalties Expense
Interest or penalties
Increase (Decrease) in Accounts Receivable
Accounts receivable
Accounts receivable
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net loss to cash provided by operating activities
GEN Restaurant Management, LLC.
GEN Restaurant Management, LLC [Member]
GEN LLC
Unrecognized tax benefits
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
GEN Fullerton.
GEN Fullerton [Member]
Consolidation Items [Domain]
Equity, Attributable to Parent [Abstract]
Permanent equity
Entity Small Business
Repurchase preferred member's units
Repurchase preferred member units.
Repurchase Preferred Member Units
GEN Houston.
GEN Houston [Member]
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit)
Members' equity (deficit)
Retained Earnings (accumulated deficit)
GEN Austin [Member]
GEN Austin.
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract]
Proceeds from the issuance of class A common stock
Proceeds from Issuance Initial Public Offering
Additional operating leases future payments.
Additional Operating Leases Future Payments
Additional operating leases
Stock-Based Compensation
Share-Based Payment Arrangement [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
GEN restaurant group, LLC.
GEN Restaurant Group LLC [Member]
GEN LLC
Tax receivable agreement liability
Tax receivable agreement liability.
Tax Receivable Agreement Liability
Leases [Abstract]
Common Class A [Member]
Class A Common Stock
Class A Common Stock
Summary of operating and finance lease activities.
Summary Of Operating And Finance Lease Activities [Table Text Block]
Summary of Operating and Finance Lease Activities
Lessee, Lease, Description [Line Items]
Amendment Flag
Maturities of Long-Term Debt [Abstract]
Product and Service [Domain]
Loss Contingencies [Line Items]
Schedule of Held-to-Maturity Securities [Line Items]
Number of stock converted as warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
GEN Northridge.
GEN Northridge [Member]
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]
Basis of Presentation and Summary of Significant Accounting Policies
Restaurant revitalization fund.
Restaurant Revitalization Fund [Policy Text Block]
Restaurant Revitalization Fund
Earnings Per Share, Policy [Policy Text Block]
Net Loss Per Share
Liabilities and Equity [Abstract]
Liabilities and equity
Entity Address, Postal Zip Code
Accounts Receivable
Accounts Receivable [Policy Text Block]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Increase (Decrease) in Operating Lease Liability
Operating lease liabilities
Notes payable to landlord.
Notes Payable to Landlord [Member]
Note Payable to Landlord
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Common Stock [Member]
Common Stock
Accounting Standards Update and Change in Accounting Principle [Table]
GEN Cerritos, LLC.
GEN Cerritos LLC [Member]
Long-Term Debt, Maturity, Year One
2023
2027
Investment Company.
Investment Company [Member]
Lessee, Operating Lease, Liability, to be Paid, Year Three
2029
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, Depletion and Amortization, Property, Plant, and Equipment
Accumulated depreciation
Less: Accumulated depreciation and amortization
Debt Instrument, Interest Rate, Effective Percentage
Loan interest
Share Repurchase Program [Abstract]
Entity Address, Address Line One
Deferred Income Taxes and Tax Credits
Deferred Income Taxes and Tax Credits, Total
Deferred tax expense
Fair Value Hierarchy and NAV [Axis]
Earnings Per Share [Abstract]
Income Tax, Policy [Policy Text Block]
Income Taxes
GEN Concord.
GEN Concord [Member]
Supplemental Cash Flow Information [Abstract]
Supplemental disclosures of other cash flow information:
Issuance of promissory note for business acquisition.
Issuance Of Promissory Note For Business Acquisition
Issuance of promissory note for business acquisition
Promissory note, amount
Statement of Financial Position Location, Balance [Axis]
Operating Lease, Right-of-Use Asset
Operating lease assets
Present value discount/interest
Finance Lease, Liability, Undiscounted Excess Amount
Present value discount/interest
Net Income (Loss) Attributable to Noncontrolling Interest, Total
Less: Net income attributable to non-controlling interest
Less: Net income attributable to non-controlling interest
Less: Net loss attributable to non-controlling interest
Less: Net loss attributable to non-controlling interest
GEN Orlando, LP [Member]
GEN Orlando, LP.
GEN Dallas
GEN Dallas [Member]
Depreciation and amortization and depreciation and amortization-corporate.
Depreciation and Amortization and Depreciation and Amortization Corporate
Depreciation and amortization
Depreciation and amortization
Document Type
GEN Chino Hills.
GEN Chino Hills [Member]
Percent of food cost.
Percent of Food Cost
Percent of food cost
Subsidiary, Ownership Percentage, Parent
Economic interest owned by operating company
Ownership interest
Entity Central Index Key
Line of Credit Facility [Table]
Shares during exchange of noncontrolling interest.
Shares During Exchange Of Noncontrolling Interest
Exchange of non-controlling interest for Class A common stock, Shares
GEN Alhambra, LLC.
GEN Alhambra LLC [Member]
GEN Wirye [Member]
GEN Wirye.
GEN Fort Lauderdale.
GEN Fort Lauderdale [Member]
GEN Rancho Cucamonga.
GEN Rancho Cucamonga [Member]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net change in cash and cash equivalents
Subsequent Event Type [Domain]
Lessee, operating lease, liability, to be paid, after year four.
Lessee, Operating Lease, Liability, to be Paid, after Year Four
Thereafter
Interest Income, Operating, Total
Interest Income, Operating
Interest income
Interest income earned from related parties
Interest income
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted-average shares, common stock options excluded
Sysco Los Angels, Inc
Sysco Los Angeles, Inc.
Sysco Los Angeles, Inc. [Member]
GEN Manhattan.
GEN Manhattan [Member]
Common Stock, Par or Stated Value Per Share
Common stock, par value
Collaborative Arrangement, Nature and Purpose
Purpose
Operating Costs and Expenses
Total restaurant operating expenses
Total restaurant operating expenses
Over a Five Year
Share-Based Payment Arrangement, Tranche One [Member]
Notes Payable to Banks [Member]
Notes Payable to Bank
GEN Corona.
GEN Corona [Member]
GEN Westgate, LP.
GEN Westgate, LP [Member]
Debt Instrument, maturity month and year.
Debt Instrument, Maturity Month and Year
Debt instrument maturity month and year
Number Of Existing Restaurant
Number of existing restaurant.
Number of existing restaurants
Debt Disclosure [Abstract]
GEN Tigard, LP [Member]
GEN Tigard, LP.
GEN Kapolei.
GEN Kapolei [Member]
GEN Cary [Member]
GEN Cary.
Useful life description
Useful Life Description
Useful life description
Ownership [Domain]
Current Fiscal Year End Date
Schedule of Long-Term Debt Instruments [Table]
Document Quarterly Report
Other Cost and Expense, Operating
Operating expenses
CALIFORNIA
CA
Advertising Cost [Policy Text Block]
Advertising Costs
Entity Address, State or Province
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Non-vested - beginning
Non-vested - ending
Line of credit facility remaining borrowing capacity
Line of Credit Facility, Remaining Borrowing Capacity
Investment, Name [Domain]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income (loss) attributable to Gen Restaurant Group, Inc.
Comprehensive loss attributable to GEN Restaurant Group, Inc.
OR
OREGON
Assets and Liabilities Held for Sale
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Liquor licenses.
Liquor Licenses [Member]
Liquor Licenses
Geographical [Axis]
Increase (Decrease) in Accrued Interest Receivable, Net
Accrued interest
Accrued interest
GEN Huntington Beach.
GEN Huntington Beach [Member]
Equity, Attributable to Noncontrolling Interest, Total
Equity, Attributable to Noncontrolling Interest, Beginning Balance
Equity, Attributable to Noncontrolling Interest, Ending Balance
Equity, Attributable to Noncontrolling Interest
Non-controlling interest
Amortization of operating lease assets
Amortization Of Operating Lease Assets
Amortization of operating lease assets
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive (loss) income, net of tax:
Deferred Income Tax Assets, Net
Deferred tax asset
Subsequent Event
Subsequent Event [Member]
GEN Rancho Cucamonga, LP.
GEN Rancho Cucamonga LP [Member]
Long-Term Debt, Maturity, Remainder of Fiscal Year
2024
2026 - remaining
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax
Net change in foreign currency translation adjustment
Property, Plant and Equipment [Abstract]
Interest Expense, Operating
Interest Expense, Operating, Total
Interest expense
Interest expense
Other Assets, Noncurrent
Other assets
Other Assets
Adjustments to additional paid in capital exchange of noncontrolling interest.
Adjustments to Additional Paid in Capital Exchange of Noncontrolling Interest
Exchange of non-controlling interest for Class A common stock
Antidilutive Securities [Axis]
WASHINGTON
WA
Vesting rights percentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Aggregate fair value of RSU's granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair Value
Share-based compensation arrangement by share-based payment award, equity instruments other than options, granted in period, fair value.
Operating Company [Member]
Operating Company.
Cash
Cash [Member]
Restaurant revitalization fund received.
Restaurant Revitalization Fund Received
Restaurant revitalization fund received
Ending ,Treasury Shares
Treasury Stock, Common, Shares
Beginning ,Treasury Shares
GEN Orlando [Member]
GEN Orlando.
Cash and Cash Equivalents [Domain]
Disposal Group, Including Discontinued Operation, Assets, Noncurrent
Disposal Group, Including Discontinued Operation, Assets, Noncurrent, Total
Assets held for Sale
GEN Chino Hills, LP.
GEN Chino Hills LP [Member]
Series II Preferred [Member ]
Series II preferred.
Series II Preferred
Shares Issued Upon Restricted Shares Units Vesting Value
Shares issued upon restricted shares units vesting value.
Shares issued upon RSU vesting
Debt Instrument, Maturity Date
Loan agreement, maturity date
Minimum [Member]
Minimum
Financial Instrument [Axis]
Assets, Current [Abstract]
Current assets:
Equity Method Investments [Table Text Block]
Summary of GKBH financial position and results of operations
Common Class B [Member]
Class B Common Stock
Level 3
Fair Value, Inputs, Level 3 [Member]
Share Repurchase Program [Line Items]
Segment Reporting [Abstract]
Business Combinations
Business Combination [Policy Text Block]
Summay of Financial Assets to Fair Value Measurement Valued Using Observable Inputs
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Liabilities, Current [Abstract]
Current liabilities
GEN Miracle Mile.
GEN Miracle Mile [Member]
Gen Kan Guwol [Member]
Gen Kan Guwol.
Accumulated Other Comprehensive Gain (Loss)
Accumulated Other Comprehensive Gain (Loss) [Member]
Accumulated Other Comprehensive Gain (Loss).
Related Party Transactions [Abstract]
Shares, Outstanding
Beginning Balance, Shares
Ending Balance, Shares
Accounts Receivable, after Allowance for Credit Loss, Current
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts receivable
Commitments and Contingencies
Commitments and contingencies (Note 11)
GEN Korean BBQ.
GEN Korean BBQ [Member]
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Property and equipment, net finance leases
Gift Card Liability, Current
Gift card liability, current.
Ending Balance
Beginning Balance
General and Administrative Expenses
General and Administrative Expense [Member]
Operating Lease, Liability
Present value
Total operating lease liabilities
Increase (Decrease) in Gift Card Liabilities
Increase (decrease) in gift card liabilities.
Gift card liabilities
Debt Instrument, Basis Spread on Variable Rate
Loan agreement, variable interest rate
Interest rate
Gift Card Redemptions
Gift Card Redemptions
Gift card redemptions.
GEN San Jose, LP.
GEN San Jose LP [Member]
Long-Term Debt, Maturity, Year Two
2024
2028
Finance Lease, Liability, Current
Obligations under finance leases, current
Lease liabilities, current
Lease liabilities, current
Lessee, Lease, Description [Table]
Finance leases, Weighted Average Discount Rate
Interest Income (Expense), Operating
Interest (expense) income, net
Interest (income) expense, net
Interest expense (income), net
Interest income (expense), net
Net (loss) income
Net loss
Net loss
Net loss
Pre-Opening Costs
Pre-opening costs
Investments, Carrying Value/Amortized Cost
Carrying Value/Amortized Cost
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss
Long-Term Debt, Type [Domain]
Non-Rule 10b5-1 Arrangement Modified Flag
Non-rule 10b5-1 arrangement modified flag.
Non-Rule 10b5-1 Arrangement Modified Flag
Loss Contingencies [Table]
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted-average shares of Class A common stock outstanding - basic
Weighted average number of shares outstanding basic
GEN Arizona, LLC.
GEN Arizona LLC [Member]
GEN San Diego, LP [Member]
GEN San Diego, LP
Document Information [Line Items]
Increase (Decrease) in Other Current Liabilities
Other current liabilities
GEN Westheimer.
GEN Westheimer [Member]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Gen Seattle
Gen Seattle [Member]
Commercial Bank Loan Agreement Four [Member]
Commercial bank loan agreement four.
Commercial Bank Loan Agreement Four
Long-Lived Tangible Asset [Domain]
GEN Maui, LP [Member]
GEN Maui, LP.
GEN K Incheon Guwol, LLC [Member]
GEN K Incheon Guwol, LLC.
Subsequent Events [Text Block]
Subsequent Events
Long term debt
Total related party notes payable
Long-Term Debt
Loan agreement, balance
Cash
Disbursed cash
Stock-based compensation
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
GEN K, LLC [Member]
GEN K, LLC.
Equity, Attributable to Parent, Total
Equity, Attributable to Parent, Beginning Balance
Equity, Attributable to Parent, Ending Balance
Equity, Attributable to Parent
Equity
Line of Credit Facility, Periodic Payment
New line of credit
GEN Sahara.
GEN Sahara [Member]
GEN K Wiyre, LLC [Member]
GEN K Wiyre, LLC.
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Statement of Stockholders' Equity [Abstract]
Investments, Gross Unrealized Losses
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss
GEN Denton [Member]
GEN Denton.
GEN Frisco.
GEN Frisco [Member]
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
Investment Banking Member.
Investment Banking [Member]
Investment Banking
Treasury Stock, Common [Member]
Treasury Shares
Leasehold Improvements [Member]
Leasehold Improvements
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization
Property and equipment, finance leases
Gain (Loss), Foreign Currency Transaction, before Tax
Gain (Loss), Foreign Currency Transaction, before Tax, Total
Gain (loss) on foreign currency
Loss on foreign currency
Loss on foreign currency
Fair Value of Financial Instruments
Fair Value Disclosures [Text Block]
GEN Ilsan [Member]
GEN Ilsan.
GEN Cary , LP [Member]
GEN Cary , LP.
Noncontrolling Interest [Member]
Non-Controlling Interest
Debt Instrument, Name [Domain]
Noncash Investing and Financing Items [Abstract]
Non-cash investing and financing activities:
Income (Loss) from Equity Method Investments
Net income attributable to the entity
Equity in loss of equity method investee
Long-Term Debt, Maturity, Year Four
2030
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Preferred Units, Issued
Preferred units, issued
Interest expense
Interest Expense, Total
Interest expense
GEN Arlington [Member]
GEN Arlington.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Entity [Domain]
Credit Facility [Axis]
Equity investment ownership percentage
Remaining equity investment ownership percentage
Ownership in new restaurant
Finance Lease, Liability, to be Paid, Year One
2027
Security Deposits.
Security Deposits [Member]
Security Deposits
Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Related and Nonrelated Parties [Axis]
Economic injury disaster loan.
Economic Injury Disaster Loan [Member]
Economic Injury Disaster Loan
GEN Fremont, LP.
GEN Fremont LP [Member]
Payments on third party loans.
Payments On Third Party Loans
Payments on third party loans
Property, Plant and Equipment, Policy [Policy Text Block]
Property and Equipment
Accounting Standards Update [Extensible Enumeration]
Entity Address, City or Town
Stock Repurchased During Period, Shares
Purchase of Class A common stock under stock repurchase plan, Shares
Capital contributions receivable.
Capital Contributions Receivable [Abstract]
Number of reportable segment
Number of Reportable Segments
Security Exchange Name
Tax benefit realized examination percent
Effective Income Tax Benefit Realized Examination Percent
Effective income tax benefit realized examination percent.
Credit Facility [Domain]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Property, Plant and Equipment, Gross, Total
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross
Property and equipment
Property and equipment, gross
Entity Bankruptcy Proceedings, Reporting Current
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Net (loss) income before taxes
Net loss before taxes
GEN Restaurant Investment, LLC.
GEN Restaurant Investment LLC [Member]
Chubby Cattle, Inc [Member]
Chubby Cattle, Inc.
Chubby Cattle, Inc.
GEN Mira Mesa.
GEN Mira Mesa [Member]
Kan Sushi Austin, LP [Member]
Kan Sushi Austin, LP.
Kan Sushi Austin, LP [Member]
Thereafter
Finance Lease, Liability, to be Paid, Year Five
Risks and uncertainties.
Risks And Uncertainties [Policy Text Block]
Risks and Uncertainties
Antidilutive Securities, Name [Domain]
Stockholders' Equity Note [Abstract]
Inventory, Net, Total
Inventory, Net
Inventories
GEN Denton, LP [Member]
GEN Denton, LP.
Interest Paid, Excluding Capitalized Interest, Operating Activity
Cash paid for interest
GEN Kapolei, LP.
GEN Kapolei, LP [Member]
Statistical Measurement [Domain]
GEN Nevada, LLC.
GEN Nevada LLC [Member]
TaxReceivableAgreementPercentageofTaxBenefitsDuetoEquityOwners
Percentage of tax benefits due to equity owners
Tax receivable agreement percentage of tax benefits due to equity owners.
Assets, Current
Current assets
Total current assets
Stock based compensation expense
Share-Based Payment Arrangement, Expense
Document Period End Date
Equity Method Investments and Joint Ventures [Abstract]
Gen Cerritos II.
Gen Cerritos II [Member]
Canceled
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Canceled in Period
Share based compensation arrangement by share based payment award equity instruments other than options canceled in period.
Fair Value Hierarchy and NAV [Domain]
GEN Torrance, LLC.
GEN Torrance LLC [Member]
GEN Sadang [Member]
GEN Sadang.
Pacific city bank.
Pacific City Bank [Member]
Pacific City Bank
AZGC [Member]
AZGC.
Statement of Financial Position [Abstract]
GEN Torrance.
GEN Torrance [Member]
RSU
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units
Loss Contingency Nature [Axis]
Rule 10b5-1 Arrangement Modified Flag
Rule 10b5-1 arrangement modified flag.
Rule 10b5-1 Arrangement Modified Flag
Revenue Recognition
Revenue [Policy Text Block]
Line of Credit [Member]
Line of Credit
Loss Contingency, Nature [Domain]
Antidilutive Security, Excluded EPS Calculation [Table]
Vesting [Axis]
Class of Stock [Axis]
Adjustments to additional paid in capital, establishment of liabilities tax receivable agreement.
Adjustments To Additional Paid In Capital, Establishment Of Liabilities Tax Receivable Agreement
Adjustment to tax liabilities and assets under TRA
Adjustment to tax liabilities and assets under Tax Receivable Agreement ("TRA")
Kan Guwol [Member]
Kan Guwol.
Payments on EIDL Loans
Payments on EIDL loans.
Payments on EIDL Loans
Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract]
Liabilities
Total liabilities
GEN Carrollton.
GEN Carrollton [Member]
Operating Costs and Expenses [Abstract]
Restaurant operating expenses:
Financial Instruments [Domain]
GEN Restaurant Companies, LLC [Member]
GEN Restaurant Companies, LLC.
Tax Receivable Agreement Payments To RelatedParties
Tax Receivable Agreement Payments To RelatedParties
Tax receivable agreement payments
South Korea
KOREA, REPUBLIC OF
Korea
GEN Fort Lauderdale, LP.
GEN Fort Lauderdale LP [Member]
Kan Sushi [Member]
Kan Sushi.
Kan Sushi [Member]
GEN Cerritos.
GEN Cerritos [Member]
Lessee, Operating Lease, Liability, to be Paid, Year Two
2028
Disposal Groups, Including Discontinued Operations [Table]
Advertising Expense
Advertising expense
Finance Lease, Right-of-Use Asset, Amortization
Depreciation and amortization related to finance lease
NEW YORK
NY
Weighted Average Number of Shares Outstanding, Diluted
Weighted-average shares of Class A common stock outstanding - diluted
Interest and Other Income [Table Text Block]
Reconciliation of Total Interest Cost to Interest (Expense) Income, Net
Securities Act File Number
GEN Dallas, LP
GEN Dallas, LP [Member]
Cover [Abstract]
GEN Maui [Member]
GEN Maui.
Gift card liabilities
Gift card liabilities
Gift card liabilities
Prepaid Expense and Other Assets, Current
Prepaid expenses and other current assets
U.S. Treasury Securities (included in cash and cash equivalents)
U.S. Treasury Securities
US Treasury Securities [Member]
Sale of Stock [Domain]
Segment Reporting Disclosure [Text Block]
Segment Information
General and Administrative Expense, Total
General and Administrative Expense
General and administrative
GEN Arizona Gift Cards, LLC [Member]
GEN Arizona Gift Cards LLC [Member]
GEN Arizona gift cards, LLC.
Noncontrolling Interest [Line Items]
Noncontrolling Interest [Line Items]
Percentage of stock issued to underwriter as warrant
Percentage Of Common Stock Converted As Warrants
Percentage of common stock converted as warrants.
GEN Cerritos II, LP.
GEN Cerritos II LP [Member]
Subsequent Event [Table]
Employee retention credits.
Employee Retention Credits [Policy Text Block]
Employee Retention Credits
Notes payable.
Notes Payable [Text Block]
Notes Payable
Short-Term Debt, Type [Domain]
Operating Lease, Expense
Total operating lease cost
Gift card breakage.
Gift Card Breakage
Gift Card Breakage
Number of Restaurants
Number of restaurants
Property, Plant and Equipment, Useful Life
Estimated useful life
Short-Term Debt, Type [Axis]
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Adopted Accounting Pronouncements
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Earnings per share disclosure.
Earnings Per Share Disclosure [Table]
Ownership [Axis]
Vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Property Plant And Equipment Estimated Useful Lives [Table Text Block]
Property Plant And Equipment Estimated Useful Lives [Table Text Block]
Estimated Useful Service Lives
Unrecognized stock-based compensation
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Lessee, Operating Lease, Term of Contract
Lease term
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding
Common stock, shares outstanding
Operating Lease, Liability, Current
Operating lease liabilities, current
Lease liabilities, current
Lease liabilities, current
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
GEN Online, LLC.
GEN Online, LLC [Member]
Document Transition Report
Operating Expenses
Total costs and expenses
Total costs and expenses
Debt Securities, Held-to-Maturity, Fair Value
Debt Securities, Held-to-Maturity, Fair Value, Total
Investments, Total
Asset Impairment Charges, Total
Asset Impairment Charges
Impairment charges
Payments under stock repurchase plan
Payments for Repurchase of Common Stock
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive (loss) income
Comprehensive loss
GEN Webster.
GEN Webster [Member]
GEN Webster
Statement of Cash Flows [Abstract]
GKBH Restaurant, LLC.
GKBH Restaurant, LLC [Member]
GKBH
GKBH Restaurant, LLC
GEN Alhambra.
GEN Alhambra [Member]
Cash Paid for Common Stock Purchased
Equity [Text Block]
Earnings Per Share [Text Block]
Net Loss per Share
GEN Oxnard [Member]
GEN Oxnard.
Discontinued Operations and Disposal Groups [Abstract]
Summary of Restricted Stock Unit Awards Activity
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Net income (loss)
Net loss attributable to Class A common stockholders
Net loss attributable to GEN Restaurant Group, Inc.
Increase (Decrease) in Inventories, Total
Increase (Decrease) in Inventories
Inventories
Accrued Percentage Rent
Accrued Percentage Rent [Member]
Accrued Percentage Rent
Operating Lease, Cost
Operating lease cost
Warrants and Rights Outstanding, Term
Warrants expire term
Schedule of maturity analysis of operating and finance lease liabilities.
Schedule Of Maturity Analysis Of Operating And Finance Lease Liabilities [Table Text Block]
Schedule Maturities of Lease Liabilities
Income Taxes Receivable, Current
Income tax receivable
Finance Lease Liability Discounted by Present Value Of Interest Rate
Finance lease liability discounted by present value of interest rate.
Present value
Line of Credit Facility [Line Items]
GEN Waco LP [member]
GEN Waco LP.
Construction in Progress [Member]
Construction in Progress
Increase (Decrease) in Prepaid Expense and Other Assets
Prepaid expenses and other current assets
Document Fiscal Year Focus
Commercial Bank Loan Agreement Three [Member]
Commercial bank loan agreement three.
Commercial Bank Loan Agreement Three
Other Assets [Member]
Other Assets
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Cash flows from investing activities
Accounts Payable, Current, Total
Accounts Payable, Current
Accounts payable
GEN Glendale.
GEN Glendale [Member]
Deferred Restaurant Revitalization Fund Grant Current
Deferred Restaurant Revitalization Fund Grant Current
Deferred Restaurant Revitalization Fund grant
GEN Sacramento.
GEN Sacramento [Member]
GEN Pearlridge.
GEN Pearlridge [Member]
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Schedule of Gift Cards
Distributions Paid To Non Controlling Interest Per Share
Distributions paid to non controlling interest per share.
Distributions paid to non controlling interest per share
ARIZONA
AZ
Percent of food costs and supplies
Percent of food costs and supplies
Tax receivable agreement percentage of tax benefits remaining realize.
Tax Receivable Agreement Percentage Of Tax Benefits Remaining Realize
Tax receivable agreement percentage of tax benefits remaining realize
Misc accrued expenses.
Misc Accrued Expenses [Member]
Misc. Accrued Expenses
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Year One
2027
FLORIDA
FL
Members' Equity, Total
Members' Equity
EB-5 Members' equity
EB-5 Members' equity; Redeemable units for 30% of Gen Restaurant Investment, LLC, redemption amount of $1,500 as of March 31, 2026 and December 31, 2025.
Net Income (Loss) Available to Common Stockholders, Basic
Net loss attributable to Class A common stockholders
Net loss attributable to Class A common stock per share - basic
Debt Instrument [Axis]
Shares issued upon restricted shares units vesting.
Shares Issued Upon Restricted Shares Units Vesting
Shares issued upon RSU vesting, Shares
Share-Based Payment Arrangement [Abstract]
Financial assets
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure, Total
Sale of Stock [Axis]
Schedule of Other Assets and Other Liabilities [Table Text Block]
Other Assets and Other Current Liabilities
Cost, Direct Material
Food cost
Increase (Decrease) in Income Taxes Receivable
Income tax receivable
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Finance leases, Weighted Average Remaining Lease Term (Years)
GEN El Paso LP [Member]
GEN El Paso LP.
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Earnings per share disclosure.
Earnings Per Share Disclosure [Line Items]
GEN San Antonio [Member]
GEN San Antonio.
Money Market Funds [Member]
Money Market Account (included in cash and cash equivalents)
Related and Nonrelated Parties [Domain]
Income Tax Disclosure [Text Block]
Income Taxes
Collaborative Arrangement and Arrangement Other than Collaborative [Table]
GEN Pflugerville [Member]
GEN Pflugerville.
GEN Edison, LP [Member]
GEN Edison, LP.
GEN Hawaii, LLC.
GEN Hawaii, LLC [Member]
GEN Hawaii, LLC
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
2026
Document Information [Table]
Legal Entity [Axis]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities:
Property, Plant and Equipment [Table Text Block]
Summary of Costs and Related Accumulated Depreciation and Amortization
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization
Accumulated depreciation
Less accumulated depreciation and amortization, finance leases
Accumulated depreciation, finance leases
Additional paid-in capital
Additional Paid-in Capital
GEN Guwol [Member]
GEN Guwol.
Measurement Frequency [Domain]
Stock buyback program repurchase amount
Share Repurchase Program, Authorized, Amount
Approximate Dollar Value of Shares that May Yet Be Purchased Under the Programs
Statement of Income Location, Balance [Axis]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
GEN Arlington, LP.
GEN Arlington, LP [Member]
Trading Symbol
Property, Plant and Equipment Disclosure [Text Block]
Property and Equipment, Net
Related Party Transaction [Table]
Subsequent Event Type [Axis]
Employee-related Liabilities, Current, Total
Employee-related Liabilities, Current
Accrued salaries and benefits
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Cash flows from financing activities
Fair Value Recurring
Fair Value, Recurring [Member]
Entity Ex Transition Period
Lessee, Operating Lease, Liability, to be Paid
Total undiscounted lease payments
Noncontrolling Interest Disclosure [Text Block]
Non-Controlling Interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Present value discount/interest
Present value discount/interest
Equity Components [Axis]
GEN Mountain View.
GEN Mountain View [Member]
Debt instrument, payment period.
Debt Instrument, Payment Period
Debt instrument, payment period
Loan, payment period
Accounts Payable
Accounts Payable, Total
Accounts payable for purchases
Line of Credit, Current
Line of credit
Schedule of Investments in Debt Securities
Debt Securities, Held-to-Maturity [Table Text Block]
Equity Component [Domain]
Asset Class [Axis]
Increase (Decrease) in Other Current Assets
Other assets
Sales tax payable.
Sales Tax Payable [Member]
Sales Tax Payable
GEN K [Member]
GEN K.
IPO [Member]
IPO
Initial Public Offering
Notes Payable, Noncurrent
Notes Payable, net of current portion
Notes payable to related parties, net of current portion
Notes payable, net of current portion
Holding Company.
Holding Company [Member]
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Long Lived Assets [Policy Text Block]
Long Lived Assets [Policy Text Block]
Long-Lived Assets
Maximum [Member]
Maximum
Statistical Measurement [Axis]
Common Stock, Value, Issued
Common stock
JC Group International Inc. (S Corp).
JC Group International Inc. (S Corp) [Member]
Net Income (Loss) Available to Common Stockholders, Diluted
Net (loss) income attributable to Class A common stock per share - diluted
Net loss attributable to Class A common stock per share - diluted
Finance Lease, Principal Payments
Payments on finance leases
Schedule Of Aggregate Maturities Of Notes Payable From Related Parties [Table Text Block]
Schedule Of Aggregate Maturities Of Notes Payable From Related Parties [Table Text Block]
Schedule of Aggregate Maturities of Notes Payable from Related Parties
GEN Mountain View, LP.
GEN Mountain View, LP [Member]
Line of credit matured
Line of Credit Facility, Expiration Date
Equity, Including Portion Attributable to Noncontrolling Interest
Beginning Balance
Ending Balance
Total permanent equity
Equipment [Member]
Equipment
Interest Payable, Current
Accrued interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
Less: Comprehensive loss attributable to non-controlling interest
Gift Card Liabilities Activations
Gift card liabilities activations.
Gift Card Activations
Related Party Transaction [Line Items]
Related Party Notes Payable [Line Item]
Revenue from Contract with Customer [Text Block]
Gift Cards
Entity Registrant Name
Debt Disclosure [Text Block]
Line of Credit
Interest Expense, Policy [Policy Text Block]
Interest (Expense) Income, net
GEN El Paso [Member]
GEN El Paso.
GEN Frisco, LP.
GEN Frisco, LP [Member]
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Other loss
Other loss
Other costs
Other costs
Subsequent Events [Abstract]
GEN K Sadang, LLC [Member]
GEN K Sadang, LLC.
Income Tax Expense (Benefit), Total
Income Tax Expense (Benefit)
Provision for income taxes
(Benefit) provision for income taxes
Income tax (benefit) expense
Measurement Frequency [Axis]
Common Stock, Dividends, Per Share, Cash Paid
Dividends paid per share
Common stock purchased, value
Stock Repurchased During Period, Value
Purchase of Class A common stock under stock repurchase plan
Aggregate cost
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
GEN Concord, LP.
GEN Concord, LP [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner
Economic interest owned by non-controlling interest holders
Entity Common Stock, Shares Outstanding
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentration Risk
Lessee, Operating Lease, Remaining Lease Term
Remaining lease terms
Other Assets and Other Current Liabilities [Policy text Block]
Other Assets and Other Current Liabilities [Policy text Block]
Other Assets and Other Current Liabilities
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive income
Consolidation Items [Axis]
Payments to Acquire Property, Plant, and Equipment, Total
Payments to Acquire Property, Plant, and Equipment
Purchase of property and equipment
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted
GEN Tigard [Member]
GEN Tigard.
Assets
Total assets
Inventory, Policy [Policy Text Block]
Inventories
Property, Plant and Equipment [Table]
GEN Chandler.
GEN Chandler [Member]
Income Statement [Abstract]
GEN Pflugerville, LP [Member]
GEN Pflugerville, LP.
GEN Webster, LP.
GEN Webster, LP [Member]
GEN San Jose.
GEN San Jose [Member]
Equity-Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Commercial bank loan agreement one.
Commercial Bank Loan Agreement One [Member]
Commercial Bank Loan Agreement One
Number of shares issued
Sale of Stock, Number of Shares Issued in Transaction
GEN Jacksonville [Member]
GEN Jacksonville
GEN Manhattan NYU, LP.
GEN Manhattan NYU, LP [Member]
Sales taxes.
Sales Taxes [Policy Text Block]
Sales Taxes
GEN Carrollton, LP.
GEN Carrollton LP [Member]
Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
Net loss per share of Class A common stock - diluted
Net loss per share of Class A common stock - diluted
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Segment Information
Operating Segments [Member]
Operating Segment
GEN Westheimer, LLC.
GEN Westheimer, LLC [Member]
City Area Code
Obligations under finance leases, net of current portion
Obligations under finance leases, net of current
Lease liabilities, net of current
Proceeds from line of credit
Proceeds from Lines of Credit
Proceeds from Lines of Credit, Total
Debt Instrument, Face Amount
Loan agreement
Valuation amount
Percentage of interest.
Percentage Of Interest
Percentage of interest
DELAWARE
DE
Variable Lease, Cost
Variable lease cost
Operating leases, Weighted Average Remaining Lease Term (Years)
Segment Reporting Information [Line Items]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Property, Plant and Equipment, Net
Property and equipment, net
Property and equipment, net
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Goodwill
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of the period
Operating Income (Loss)
Operating income
Income from operations
(Loss) income from operations
Retained Earnings
Retained Earnings [Member]
Cash and Cash Equivalents [Axis]
Basis of presentation and summary of significant accounting policies.
Basis Of Presentation And Summary Of Significant Accounting Policies [Table]
GEN San Antonio, LP [Member]
GEN San Antonio, LP.
Stock-based compensation
Share-Based Payment Arrangement, Noncash Expense
Share-Based Payment Arrangement, Noncash Expense, Total
Payment Towards Accounts Payable
Payment towards accounts payable.
Payment towards accounts payable
Notes Payable To WDI Member.
Notes Payable To WDI [Member]
Agreement with WDI International, Inc.
Operating leases, Weighted Average Discount Rate
Operating Lease, Liability, Noncurrent
Operating lease liabilities, net of current portion
Lease liabilities, net of current
Level 1
Fair Value, Inputs, Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided by (used in) financing activities
Notes Payable
Notes Payable, Total
Notes payable
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]
GEN Tucson, LP [Member]
GEN Tucson, LP.
GEN Fremont.
GEN Fremont [Member]
GEN Waco [Member]
GEN Waco.
Lessee operating and finance leases disclosure.
Lessee Operating And Finance Leases Disclosure [Text Block]
Leases
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Entity Interactive Data Current
Statement of Income Location, Balance [Domain]
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Cash flows from operating activities
Furniture and Fixtures [Member]
Furniture and Fixtures
Repayments of Lines of Credit
Payment on line of credit
Proceeds from Related Party Debt
Proceeds from related party loans
GEN California, LLC.
GEN California LLC [Member]
Entity Tax Identification Number
GEN Grills, LP [Member]
GEN Grills, LP.
Repayments of Notes Payable
Repayment of notes payable
Long-Term Debt, Type [Axis]
GEN K Ilsan, LLC [Member]
GEN K Ilsan, LLC.
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Organization and Description of Business
Occupancy, Net
Occupancy expenses
Reduction In Accounts Payable And Accruals For Purchases Of Property And Equipment
Reduction in accounts payable and accruals for purchases of property and equipment.
Reduction in accounts payable and accruals for purchases of property and equipment
Liquor licenses.
Liquor Licenses [Policy Text Block]
Liquor Licenses
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Effects of exchange rate changes on cash
Other related-party transactions.
Other Related-Party Transactions [Text Block]
Other Related-Party Transactions
Local Phone Number
Disposal Group Including Discontinued Operation Lease Liabilities Held For Sale Noncurrent
Disposal group including discontinued operation lease liabilities held for sale noncurrent.
Lease Liabilities held for sale
Lease liabilities held for sale
Other Liabilities, Current
Other current liabilities
Long term debt maturities repayments of principal after year four.
Long Term Debt Maturities Repayments Of Principal After Year Four
Thereafter
Commercial bank loan agreement two.
Commercial Bank Loan Agreement Two [Member]
Commercial Bank Loan Agreement Two
Finance Lease, Liability, to be Paid, Year Two
2028
GEN Online.
GEN Online [Member]
Present value
Operating lease liability discounted by present value of interest rate.
Operating Lease Liability Discounted by Present Value Of Interest Rate
Present value
Accounting Policies [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenue
GEN Jacksonville, L P [Member]
GEN Jacksonville, L P
Pre-Opening costs.
PreOpening Costs [Policy text Block]
Pre-Opening Costs
Lessee, Operating Lease, Liability, to be Paid, Year Four
2030
Class of Stock [Domain]
Labor and Related Expense
Payroll and benefits
Summary of list of entities in operation.
Summary of List of Entities In Operation [Table Text Block]
Summary of List of Entities in Operation
GEN Northridge, LP.
GEN Northridge LP [Member]
GEN Houston, LLC.
GEN Houston, LLC [Member]
Entity Emerging Growth Company
GEN Master, LLC.
GEN Master, LLC [Member]