Document And Entity Information [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Common Stock Common Stock, par value $0.01 per share Represents information pertaining to rights to purchase Series A Preferred Stock. Rights to Purchase Series A Preferred Stock [Member] Rights to Purchase Series A Preferred Stock, par value $0.01 per share Document Information [Line Items] Document Type Document Type Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol No Trading Symbol Flag Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Smaller reporting company Entity Emerging Growth Company Emerging Growth Company Entity Shell Company Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash available Accounts and Other Receivables, Net, Current Accounts and other receivables, net Inventory, Net Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Income Taxes Receivable, Current Income tax receivable Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Capital Leases, Balance Sheet, Assets by Major Class, Net Property and equipment held under finance lease, net Operating Lease, Right-of-Use Asset Property and equipment held under operating leases, net ("ROU asset") Goodwill Goodwill Indefinite-Lived Trademarks Trademarks Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities, Current [Abstract] Current liabilities: Finance Lease, Liability, Current Less: current maturities Current portion of obligations under finance leases Operating Lease, Liability, Current Less: current maturities Current portion of obligations under operating leases Accounts Payable, Current Accounts payable Employee-related Liabilities, Current Accrued salaries and vacation Accrued Insurance, Current Accrued insurance Accrued Income Taxes, Current Accrued income taxes payable Interest Payable, Current Accrued interest Payable under tax receivable agreement current. Payable Under Tax Receivable Agreement Current Current portion of income tax receivable agreement payable Other Liabilities, Current Other accrued expenses and current liabilities Total other accrued expenses and current liabilities Liabilities, Current Total current liabilities Long-term Line of Credit, Noncurrent Revolving line of credit Revolver loan Finance Lease, Liability, Noncurrent Obligations under finance leases, net of current portion Noncurrent portion Operating Lease, Liability, Noncurrent Obligations under operating leases, net of current portion Noncurrent portion Deferred Income Tax Liabilities, Net Deferred taxes Other Liabilities, Noncurrent Other noncurrent liabilities Total other noncurrent liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 7) Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity Preferred Stock, Value, Issued Preferred stock, $0.01 par value, 100,000,000 shares authorized; 100,000 shares designated as Series A Preferred Stock; none issued or outstanding Common Stock, Value, Issued Common stock, $0.01 par value, 200,000,000 shares authorized; 29,988,771 and 31,353,223 shares issued and outstanding as of June 26, 2024 and December 27, 2023, respectively Additional Paid in Capital, Common Stock Additional paid-in-capital Retained Earnings (Accumulated Deficit) Retained earnings Stockholders' Equity Attributable to Parent Ending balance Beginning balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (usd per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized (shares) Number of preferred stock shares designated. Number of Preferred Stock Shares Designated Shares designated as Series A Preferred Stock Preferred Stock, Shares Issued Preferred stock, shares issued (shares) Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (shares) Common Stock, Par or Stated Value Per Share Common stock, par value (usd per share) Common Stock, Shares Authorized Common stock, shares authorized (shares) Common Stock, Shares, Issued Common stock, shares issued (shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (shares) CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Domain] Company-operated restaurant revenue Franchise revenue Franchise Advertising Fee [Member] Franchise advertising fee revenue Statement [Line Items] Statement [Line Items] Revenues [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Total revenue Cost of Goods and Services Sold [Abstract] Cost of operations Cost, Direct Material Food and paper cost Cost, Direct Labor Labor and related expenses Other Cost and Expense, Operating Occupancy and other operating expenses Gain on Business Interruption Insurance Recovery Gain on recovery of insurance proceeds, lost profits, net Gain on recovery of insurance proceeds Generally recurring costs associated with normal operations including cost of services. Company Restaurant Expenses Company restaurant expenses General and Administrative Expense. General and administrative expenses Franchisor Costs Franchise expenses Depreciation, Depletion and Amortization Depreciation and amortization Depreciation and amortization Gain (Loss) on Disposition of Other Assets Loss (gain) on disposal of assets Loss (gain) on disposal of assets The net gain from insurance settlement for property and equipment that exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire. Gain on Recovery of Insurance Proceeds For Property And Equipment Gain on recovery of insurance proceeds, property, equipment and expenses Gain on recovery of insurance proceeds, property, equipment and expenses Gain (Loss) on Disposition of Business Loss (gain) on disposition of restaurants Loss (gain) on disposition of restaurants Gain on sale of restaurants Restructuring Costs and Asset Impairment Charges Impairment and closed-store reserves Costs and Expenses Total expenses Operating Income (Loss) Income from operations Interest Expense. Interest expense, net Tax receivable agreement (income) expenses. Tax Receivable Agreement (Income) Expenses Income tax receivable agreement income Income tax receivable agreement income Income tax receivable agreement expense (income) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before provision for income taxes Income Tax Expense (Benefit) Provision for income taxes Provision for income taxes Net income Net income EARNINGS PER SHARE Net income per share Earnings Per Share, Basic Basic (usd per share) Net income per share-basic (usd per share) Earnings Per Share, Diluted Diluted (usd per share) Net income per share-diluted (usd per share) Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Weighted-average shares used in computing net income per share Denominator: Weighted Average Number of Shares Outstanding, Basic Basic (shares) Weighted-average shares outstanding-basic (shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (shares) Weighted-average shares outstanding-diluted (shares) Weighted-average shares outstanding-diluted (shares) CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion Reclassifications of loss into net income Gain Loss Reclassified from AOCI into Interest Income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax Income tax benefit Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Other comprehensive income (loss), net of tax Other comprehensive loss, net of taxes Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) Equity Components [Axis] Equity Component [Domain] Additional Paid-in Capital (Accumulated Deficit) Retained Earnings Accumulated Other Comprehensive (Loss) Income Accumulated Other Comprehensive Income (Loss) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Shares, Outstanding Ending balance (shares) Beginning balance (shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Stock Issued During Period, Value, Restricted Stock Award, Gross Issuance of common stock related to restricted shares Stock Issued During Period, Shares, Restricted Stock Award, Gross Issuance of common stock related to restricted shares (shares) Stock Issued During Period, Value, Stock Options Exercised Issuance of common stock upon exercise of stock options, net Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised (shares) Issuance of common stock upon exercise of stock options, net (shares) Adjustments Related to Tax Withholding for Share-based Compensation Shares repurchased for employee tax withholdings Shares Paid for Tax Withholding for Share Based Compensation Shares repurchased for employee tax withholdings (shares) Stock Repurchased and Retired During Period, Value Repurchase of common stock Stock Repurchased and Retired During Period, Shares Repurchase of common stock (shares) Amount of decrease in additional paid in capital (APIC) resulting from exercise tax on repurchase of common stock. Adjustments to Additional Paid in Capital, Exercise Tax on Repurchase of Common Stock Repurchase of common stock - excise tax Share based compensation arrangement by share based payment award equity instruments other than options forfeited and expirations in period value. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expiration In Period Value Forfeiture of common stock related to restricted shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expirations In Period Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited And Expirations In Period Forfeiture of common stock related to restricted shares (shares) Forfeited and cancelled CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Operating Cash Flows, Direct Method [Abstract] Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash flows provided by operating activities: Share-based Compensation Stock-based compensation expense Proceeds from Insurance Settlement, Operating Activities Fire insurance proceeds for expenses paid and lost profit The net gain from insurance settlement for property and equipment that exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire. Gain on Recovery of Insurance Proceeds For Property And Equipment Net Gain on recovery of insurance proceeds, property, equipment and expenses, net The amount of impairment related to certain property, equipment and ROU Assets. Property Equipment and Certain Rou Assets Impairment Impairment of property and equipment Amortization of Debt Issuance Costs Amortization of deferred financing costs Deferred Income Tax Expense (Benefit) Deferred income taxes, net Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts and Other Receivables Accounts and other receivables Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Income Taxes Income taxes payable Increase (Decrease) in Other Operating Assets Other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Employee Related Liabilities Accrued salaries and vacation Increase (Decrease) in Insurance Liabilities Accrued insurance Payment related to tax receivable agreement. Payment Related To Tax Receivable Agreement Payment related to tax receivable agreement Payments to pre-IPO stockholders under TRA Increase (Decrease) in Other Accrued Liabilities Other accrued expenses and liabilities Net Cash Provided by (Used in) Operating Activities Net cash flows provided by operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities: Proceeds from Divestiture of Businesses Proceeds from disposition of restaurants Proceeds from Insurance Settlement, Investing Activities Proceeds from fire insurance for property and equipment Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash flows used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities: Proceeds from Secured Lines of Credit Proceeds from borrowings on revolver and swingline loans Repayments of Lines of Credit Payments on revolver and swingline loan Repayments of Lines of Credit Payments Related to Tax Withholding for Share-based Compensation Minimum tax withholdings related to net share settlements Proceeds from Issuance of Common Stock Proceeds from issuance of common stock upon exercise of stock options, net of expenses Finance Lease, Principal Payments Payment of obligations under finance leases Financing cash flows used for finance leases Payments for Repurchase of Common Stock Repurchases of common stock Net Cash Provided by (Used in) Financing Activities Net cash flows used in by financing activities Cash and Cash Equivalents, Period Increase (Decrease) Increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Supplemental Cash Flow Elements [Abstract] Supplemental cash flow information Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid during the period for interest Income Taxes Paid, Net Cash paid during the period for income taxes Capital Expenditures Incurred but Not yet Paid Unpaid purchases of property and equipment Stock repurchase accrued not paid including exercise tax. Stock Repurchase Accrued Not Paid Including Exercise Tax Unpaid repurchases of common stock and excise tax BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] PROPERTY AND EQUIPMENT