Related Party Transactions By Related Party [Axis] Good Times Drive Thru Inc. [Member] Debt Instrument [Axis] Cadence Credit Facility [Member] Award Type [Axis] Incentive and Non-Statutory Stock Options [Member] Range [Axis] Minimum [Member] Maximum [Member] Segments [Axis] Good Times Burgers And Frozen Custard Restaurants [Member] Bad Daddys Burger Bar Restaurant [Member] Corporate Segment [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] Bad Daddy's Franchise Development, LLC [Member] Legal Entity [Axis] Bad Daddy's International, LLC [Member] Incentive Stock Option [Member] Non Statutory Stock Options [Member] Product and Service [Axis] Restaurant sales [Member] Franchise royalties [Member] Document And Entity Information Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Period Focus Document Fiscal Year Focus 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 Assets held for sale 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 and capital lease obligations Accounts payable Deferred income Other accrued liabilities Total current liabilities LONG-TERM LIABILITIES: Maturities of long-term debt and capital lease obligations 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 06/26/18 and 09/26/17 Common stock, $.001 par value; 50,000,000 shares authorized, 12,468,326 and 12,427,280 shares issued and outstanding as of 06/26/18 and 09/26/17, 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 INCOME (LOSS) FROM OPERATIONS Other Expenses: Interest expense, net Other income (loss) Total other expenses, net NET INCOME (LOSS) Income attributable to non-controlling interests NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS BASIC AND DILUTED INCOME (LOSS) PER SHARE: Net income (loss) attributable to Common Shareholders WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Basic Diluted Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) Adjustments to reconcile net income (loss) to net cash provided by 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 Loss on disposal of assets Changes in operating assets and liabilities: Change in: Receivables and other Inventories Deposits and other Change in: Accounts payable Deferred liabilities Accrued and other liabilities Net cash provided by 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 Net contributions (distributions) received by (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 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 Net Income Loss Per Common Share Tables Schedule of Net Income (Loss) per Common Share 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 2018 2019 2020 2021 2022 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] 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 June 26, 2018 Exercisable June 26, 2018 Weighted Average Exercise Price Outstanding-at beginning of year Options granted Options exercised Forfeited Expired Outstanding June 26, 2018 Exercisable June 26, 2018 Weighted Avg. Remaining Contractual Life (Yrs.) Outstanding June 26, 2018 Exercisable June 26, 2018 Shares Non-vested shares at beg of year Granted Forfeited Vested Non-vested shares at June 26, 2018 Grant Date Fair Value Per Share Non-vested shares Granted Forfeited Vested Non-vested shares at June 26, 2018 Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Related Party [Axis] Loan Agreement, amount Interest rate Maturity date Interest rate description Payment of debt issuance costs Minimum liquidity of credit facility Outstanding balance on credit Weighted-average shares outstanding - basic 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] Subsequent Event Type [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 26, 2017 Income Contributions Distributions Balance at June 26, 2018 Number of restaurants Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Revenues Loss from operations Capital expenditures 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. 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 Depreciation, Depletion and Amortization, Nonproduction AmortizationOfLeaseIncentiveObligation Gain (Loss) on Disposition of Property Plant Equipment Gain (Loss) on Disposition of Other Assets 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 Weighted Average Number Diluted Shares Outstanding Adjustment Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Number of Restaurants