Award Type [Axis] Incentive and Non-Statutory Stock Options [Member] Finite-Lived Intangible Assets by Major Class [Axis] Franchise rights [Member] Non-compete agreements [Member] Indefinite-lived Intangible Assets [Axis] Trademarks and Trade Names [Member] Stock Options [Member] Restricted Stock [Member] Range [Axis] Minimum [Member] Maximum [Member] Related Party Transactions By Related Party [Axis] Good Times [Member] Bad Daddy's Franchise Development, LLC [Member] Legal Entity [Axis] Bad Daddy's [Member] Segments [Axis] Good Times [Member] Bad Daddys [Member] Corporate Segment [Member] Incentive Stock Option [Member] Product and Service [Axis] Restaurant sales [Member] Franchise revenues [Member] Debt Instrument [Axis] Cadence Credit Facility [Member] Equity Components [Axis] Preferred Stock [Member] Common Stock [Member] Capital Contributed in Excess of Par Value [Member] Non-Controlling Interest In Partnerships [Member] Accumulated Deficit [Member] Subsequent Event Type [Axis] Subsequent Event [Member] Business Acquisition [Axis] Document And Entity Information Entity Registrant Name Entity Central Index Key Document Type Amendment Flag Document Period End Date Current Fiscal Year End Date Entity Public Float Document Fiscal Period Focus Document Fiscal Year Focus Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Common Stock, Shares Outstanding Statement of Financial Position [Abstract] ASSETS CURRENT ASSETS: Cash and cash equivalents Receivables, net of allowance for doubtful accounts of $0 Prepaid expenses and other Inventories Notes receivable Total current assets PROPERTY AND EQUIPMENT: Land and building Leasehold improvements Fixtures and equipment Total property and equipment Less accumulated depreciation and amortization Total net property and equipment OTHER ASSETS: Notes receivable, net of current portion Deposits and other assets Trademarks Other intangibles, net Goodwill Total other assets TOTAL ASSETS: LIABILITIES AND STOCKHOLDERS' EQUITY CURRENT LIABILITIES: Current maturities of long-term debt Accounts payable Deferred income Other accrued liabilities Total current liabilities LONG-TERM LIABILITIES: Maturities of long-term debt due after one year Deferred and other liabilities Total long-term liabilities STOCKHOLDERS' EQUITY: Good Times Restaurants Inc. stockholders' equity: Preferred stock, $.01 par value; 5,000,000 shares authorized, no shares issued and outstanding as of 12/25/18 and 09/25/18 Common stock, $.001 par value; 50,000,000 shares authorized, 12,522,778 and 12,481,162 shares issued and outstanding as of 12/25/18 and 09/25/18, respectively Capital contributed in excess of par value Accumulated deficit Total Good Times Restaurants Inc. stockholders' equity Non-controlling interests Total stockholders' equity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Receivables, allowance for doubtful accounts Preferred stock, par value Preferred stock, shares authorized Preferred stock, issued Preferred stock, outstanding Preferred stock, liquidation preference Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Statement [Table] Statement [Line Items] NET REVENUES: Total net revenues RESTAURANT OPERATING COSTS: Food and packaging costs Payroll and other employee benefit costs Restaurant occupancy costs Other restaurant operating costs Preopening costs Depreciation and amortization Total restaurant operating costs General and administrative costs Advertising costs Franchise costs Asset impairment costs Gain on restaurant asset sale LOSS FROM OPERATIONS Other Expenses: Interest expense, net Other expenses Total other expenses, net NET LOSS Income attributable to non-controlling interests NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS BASIC AND DILUTED LOSS PER SHARE: Net loss attributable to Common Shareholders WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Basic and Diluted BALANCES BALANCES, shares Stock issuance expense Stock sale Stock sale, shares Stock-based compensation cost Warrant exercise Warrant exercise, shares Warrant exercise-costs Restricted stock unit vesting Stock option exercise Stock option exercise, shares Non-controlling interests: Income Contributions Distributions Acquired through acquisition Net Loss attributable to Good Times Restaurants Inc and comprehensive loss Preferred stock dividends BALANCES BALANCES, shares Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net loss Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Depreciation and amortization Accretion of deferred rent Amortization of lease incentive obligation Stock-based compensation expense Recognition of deferred gain on sale of restaurant building Changes in operating assets and liabilities: Receivables and other Inventories Deposits and other Accounts payable Deferred liabilities Accrued and other liabilities Net cash provided by (used in) operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Payments for the purchase of property and equipment Proceeds from sale leaseback transaction Payment for the purchase of non-controlling interests Payments received from franchisees and others Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Borrowings on notes payable and long-term debt Principal payments on notes payable and long-term debt Proceeds from stock option exercise Net distributions paid to non-controlling interests Net cash provided by (used in) financing activities NET CHANGE IN CASH AND CASH EQUIVALENTS CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Cash paid for interest Change in accounts payable attributable to the purchase of property and equipment Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Revenue from Contract with Customer [Abstract] Revenue Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Stockholders' Equity Note [Abstract] Common Stock Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-Based Compensation Debt Disclosure [Abstract] Notes Payable and Long-Term Debt Earnings Per Share [Abstract] Net Income (Loss) per Common Share Commitments and Contingencies Disclosure [Abstract] Contingent Liabilities and Liquidity Goodwill and Intangible Asset Impairment [Abstract] Impairment of Long-Lived Assets and Goodwill Income Tax Disclosure [Abstract] Income Taxes Noncontrolling Interest [Abstract] Non-controlling Interests Accounting Changes and Error Corrections [Abstract] Recent Accounting Pronouncements Subsequent Events [Abstract] Subsequent Events Segment Reporting [Abstract] Segment Reporting Schedule of Goodwill and Intangible Assets Schedule of Estimated Aggregate Future Amortization Expense For Finite-Lived Intangible Assets Weighted Average Assumptions Used to Estimate Fair Value of Stock Option Grants Summary of Stock Option Activity under Share Based Compensation Plan Schedule of Non-vested Restricted Stock Activity Schedule of Noncontrolling Interest Schedule of Reportable Segments Advertising Costs Amortization of Intangible Assets Gross Carrying Amount Accumulated Amortization Net Carrying Amount Indefinite-Lived Intangible Assets (Excluding Goodwill) Intangible assets, gross carrying amount Intangible Assets, net carrying amount Goodwill, gross carrying amount Goodwill, Accumulated Amortization Goodwill, net carrying amount Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Remainder of 2019 2020 2021 2022 2023 Thereafter Aggregate amount of stock value authorized by SEC to be issued Aggregate amount of stock shares authorized by SEC to be issued Aggregate amount of stock value issued under S-3 Number of shares issued Price per share issued Proceeds from shares issued Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Non Statutory Stock Options [Member] Stock based compensation expense Stock options granted, shares Stock options granted, exercise price Stock options granted, per-share weighted average fair value Aggregate Intrinsic Value, Outstanding Aggregate Intrinsic Value, Exercisable Restricted stock granted, shares Restricted stock granted, weighted average grant date fair value per share Vesting period Remaining total unrecognized compensation cost related to unvested stock-based arrangements Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition Stock options exercised, shares Proceeds from stock option exercises Expected term (years) Expected volatility Expected volatility, minimum Expected volatility, maximum Risk-free interest rate Risk-free interest rate, minimum Risk-free interest rate, maximum Expected dividends Shares Outstanding-at beginning of year Options granted Options exercised Forfeited Expired Outstanding December 25, 2018 Exercisable December 25, 2018 Weighted Average Exercise Price Outstanding-at beginning of year Options granted Options exercised Forfeited Expired Outstanding December 25, 2018 Exercisable December 25, 2018 Weighted Avg. Remaining Contractual Life (Yrs.) Outstanding December 25, 2018 Exercisable December 25, 2018 Shares Non-vested shares at beg of year Granted Forfeited Vested Non-vested shares at December 25, 2018 Grant Date Fair Value Per Share Non-vested shares Granted Forfeited Vested Non-vested shares at December 25, 2018 Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Loan Agreement, amount Loan Agreement, amount outstanding Loan agreement, increase amount Interest rate Weighted average interest rate Interest expense Interest rate description Payment of debt issuance costs Maturity date Minimum liquidity amount Letters of credit outstanding, amount Debt incurrence test on new borrowings Letters of credit outstanding face value Effect of potentially dilutive securities Stock options Restricted stock units Weighted-average shares outstanding - diluted Excluded from diluted weighted-average shares outstanding: Antidilutive Schedule of Impaired Long-Lived Assets Held and Used [Table] Impaired Long-Lived Assets Held and Used [Line Items] Related Party [Axis] Number of restaurants impaired Non-cash impairment charge Loss from disposal of assets Rent expense Income Tax Examination [Table] Income Tax Examination [Line Items] Deferred tax assets Income tax provision or benefit Effective income tax rate Years subject to income tax examination Reserves for uncertain tax positions Accrual for interest and penalties Noncontrolling Interest [Table] Noncontrolling Interest [Line Items] Balance at September 25, 2018 Balance at December 25, 2018 Number of restaurants Subsequent Event [Table] Subsequent Event [Line Items] Purchase price Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Revenues Income (loss) from operations Payments for the purchase of property and equipment Property and equipment, net The aggregate number of shares authorized by the SEC to be issued by the registration statement. The aggregate amount of stock value authorized by the SEC to be issued by the S-3 shelf registration statement. Aggregate amount of stock value issued under S Three [Member] Amortization of lease incentive obligation. Bad Daddy's Burger Bar Restaurant [Member]. Bad Daddy''s Franchise Development, LLC [Member] Bad Daddy''s International, LLC [Member] Cadence Credit Facility [Member] Change in accounts payable attributable to the purchase of property and equipment. Deferred Rent And Other Long Term Liabilities Noncurrent Noncurrent Deposits And Other Assets. Net carrying amount after accumulated amortization as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a specified period of time. Good Times Burgers And Frozen Custard Restaurants [Member]. Good Times Drive Thru Inc. [Member]. Incentive and Non Statutory Stock Options [Member] Incentive Stock Option [Member] Increase (Decrease) In Intangible Assets, Deposits And Other Carrying amount as of the balance sheet date of real estate and buildings held for productive use. This excludes land and buildings held for sale. Net contributions (distributions) received by (paid to) non-controlling interests. Non Statutory Stock Options [Member]. The tabular disclosure for information for non-controlling interests. Number Of Restaurants Impaired Net carrying amount after accumulated amortization as of the balance sheet date of intangible assets not otherwise specified in the taxonomy having a reasonably expected period of economic benefit. Payments received from franchisees and others. Promissory Note [Member]. Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Weighted Average Number Basic And Diluted, Shares Outstanding [Abstract] Costs incurred and are directly related to generating franchise revenues. Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of restricted stock units. Debt incurrence test on new borrowings. Value of stock issued as a result of the exercise of warrants. Number of warrants exercised during the current period. Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock due to the exercise of warrants. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. Good Times Burgers And Frozen Custard Restaurants [Member] Assets, Current Property, Plant and Equipment, Gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Other Assets, Noncurrent Assets Liabilities, Current Liabilities, Noncurrent Stockholders' Equity Attributable to Parent Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Liabilities and Equity Cost of Revenue Gain (Loss) on Disposition of Assets Nonoperating Income (Expense) Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Net Income (Loss) Available to Common Stockholders, Basic Shares, Outstanding Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Adjustments To Additional Paid In Capital, Warrant Exercise, Issuance Costs Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Noncontrolling Interest, Increase from Business Combination Preferred Stock Dividends and Other Adjustments Depreciation, Depletion and Amortization, Nonproduction AmortizationOfLeaseIncentiveObligation Gain (Loss) on Disposition of Property Plant Equipment Increase (Decrease) in Accounts Receivable and Other Operating Assets Increase (Decrease) in Inventories IncreaseDecreaseInIntangibleAssetsDepositsAndOther Increase (Decrease) in Accounts Payable Net Cash Provided by (Used in) Operating Activities Payments to Acquire Property, Plant, and Equipment Payments to Acquire Interest in Subsidiaries and Affiliates Net Cash Provided by (Used in) Investing Activities Repayments of Long-term Debt Net Cash Provided by (Used in) Financing Activities Cash and Cash Equivalents, Period Increase (Decrease) Finite-Lived Intangible Assets, Accumulated Amortization Finite-Lived Intangible Assets, Net Intangible Assets, Net (Excluding Goodwill) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Number of Restaurants