BASIS OF PRESENTATION AND CRITICAL ACCOUNTING POLICIES (Policies)	9 Months Ended
	Jun. 27, 2020
Accounting Policies [Abstract]
Principles of Consolidation	PRINCIPLES OF CONSOLIDATION — The consolidated condensed financial statements include the accounts of Ark Restaurants Corp. and all of its wholly-owned subsidiaries, partnerships and other entities in which it has a controlling interest, collectively herein referred to as the “Company”. Also included in the consolidated condensed financial statements are certain variable interest entities (“VIEs”). All significant intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	USE OF ESTIMATES — The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The accounting estimates that require management’s most difficult and subjective judgments include projected cash flow, allowances for potential bad debts on receivables, assumptions regarding discount rates related to lease accounting, the useful lives and recoverability of its assets, such as property and intangibles, fair values of financial instruments and share-based compensation, the realizable value of its tax assets and determining when investment impairments are other-than-temporary. Because of the uncertainty in such estimates, actual results may differ from these estimates. The results of operations for the 13 and 39 weeks ended June 27, 2020 are not necessarily indicative of the results to be expected for any other interim period or for the year ending October 3, 2020.
Reclassifications	RECLASSIFICATIONS — Certain reclassifications of prior period amounts have been made to conform to the current period presentation. The Company eliminated the presentation of restaurant operating income (loss) as a non-GAAP measure from its consolidated condensed statements of operations.
Seasonality	SEASONALITY — The Company has substantial fixed costs that do not decline proportionally with sales. The first and second fiscal quarters, which include the winter months, usually reflect lower customer traffic than in the third and fourth fiscal quarters. However, sales in the third and fourth fiscal quarters can be adversely affected by inclement weather due to the significant amount of outdoor seating at the Company’s restaurants
Fair Value of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS — The carrying amount of cash and cash equivalents, receivables, accounts payable and accrued expenses approximate fair value due to the immediate or short-term maturity of these financial instruments. The fair values of notes receivable and payable are determined using current applicable rates for similar instruments as of the balance sheet dates and approximate the carrying value of such debt instruments.
Cash and Cash Equivalents	CASH AND CASH EQUIVALENTS — Cash and cash equivalents include cash on hand, deposits with banks and highly liquid investments generally with original maturities of three months or less. Outstanding checks in excess of account balances, typically vendor payments, payroll and other contractual obligations disbursed after the last day of a reporting period are reported as a current liability in the accompanying consolidated condensed balance sheets.
Concentrations of Credit Risk	CONCENTRATIONS OF CREDIT RISK — Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company reduces credit risk by placing its cash and cash equivalents with major financial institutions with high credit ratings. At times, such amounts may exceed federally insured limits. Accounts receivable are primarily comprised of normal business receivables, such as credit card receivables, that are collected in a short period of time and amounts due from the hotel operators where the Company has a location, and are recorded upon satisfaction of the performance obligation. The Company reviews the collectability of its receivables on an ongoing basis, and provides for an allowance when it considers the entity unable to meet its obligation. The concentration of credit risk with respect to accounts receivable is generally limited due to the short payment terms extended by the Company and the number of customers comprising the Company’s customer base.
Goodwill and Trademarks	GOODWILL AND TRADEMARKS — Goodwill and trademarks are not amortized, but are subject to impairment analysis. We assess the potential impairment of goodwill and trademarks annually (at the end of our fourth quarter) and on an interim basis whenever events or changes in circumstances indicate that the carrying value may not be recoverable. If we determine through the impairment review process that goodwill or trademarks are impaired, we record an impairment charge in our consolidated condensed statements of operations. Due to the recent impact of the COVID-19 pandemic to the global economy, including but not limited to, the volatility of the Company's stock price, temporary closure of the Company's restaurants and the challenging environment for the restaurant industry in general, the Company determined that there were indicators of potential impairment of its goodwill and trademarks during the 13 weeks ended June 27, 2020. As such, the Company performed a qualitative assessment for both goodwill and its trademarks and concluded that the fair value of these assets exceeded their carrying values. Accordingly, the Company did not record any impairment to its goodwill or trademarks during the 13 and 39 weeks ended June 27, 2020. The ultimate severity and longevity of the COVID-19 pandemic is unknown, and therefore, it is possible that impairments could be identified in future periods, and such amounts could be material.
Long-lived And Right-Of-Use-Assets	LONG-LIVED AND RIGHT-OF-USE ASSETS — Long-lived assets, such as property, plant and equipment, purchased intangibles subject to amortization, and right-of-use assets ("ROU assets") are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In the evaluation of the fair value and future benefits of long-lived assets, the Company performs an analysis of the anticipated undiscounted future net cash flows of the related long-lived assets. If the carrying value of the related asset exceeds the undiscounted cash flows, the carrying value is reduced to its fair value. Various factors including estimated future sales growth and estimated profit margins are included in this analysis. The Company considers a triggering event related to long-lived assets or ROU assets in a net asset position to have occurred related to a specific restaurant if the restaurant’s cash flows for the last 12 months are less than a minimum threshold or if consistent levels of undiscounted cash flows for the remaining lease period are less than the carrying value of the restaurant’s assets. Additionally, the Company considers a triggering event related to ROU assets to have occurred related to a specific lease if the location has been subleased and future estimated sublease income is less than current lease payments. If the Company concludes that the carrying value of certain long-lived and ROU assets will not be recovered based on expected undiscounted future cash flows, an impairment loss is recorded to reduce the long-lived or ROU assets to their estimated fair value. The fair value is measured on a nonrecurring basis using unobservable (Level 3) inputs. There is uncertainty in the projected undiscounted future cash flows used in the Company's impairment review analysis, which requires the use of estimates and assumptions. If actual performance does not achieve the projections, or if the assumptions used change in the future, the Company may be required to recognize impairment charges in future periods, and such charges could be material.
Revenue Recognition	REVENUE RECOGNITION — We recognize revenues when it satisfies a performance obligation by transferring control over a product or service to a restaurant guest or other customer. Revenues from restaurant operations are presented net of discounts, coupons, employee meals and complimentary meals and recognized when food, beverage and retail products are sold. Sales tax collected from customers is excluded from sales and the obligation is included in sales tax payable until the taxes are remitted to the appropriate taxing authorities. Catering service revenue is generated through contracts with customers whereby the customer agrees to pay a contract rate for the service. Revenues from catered events are recognized in income upon satisfaction of the performance obligation (the date the event is held) and all customer payments, including nonrefundable upfront deposits, are deferred as a contract liability until such time.
Leases	LEASES — We determine if an arrangement contains a lease at inception. An arrangement contains a lease if it implicitly or explicitly identifies an asset to be used and conveys the right to control the use of the identified asset in exchange for consideration. As a lessee, we include operating leases in Operating lease right-of-use assets and Operating lease liabilities in our consolidated condensed balance sheet. Right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized upon commencement of the lease based on the present value of the lease payments over the lease term. As most of our leases do not provide an implicit interest rate, we use our incremental borrowing rate based on the information available at commencement date to determine the present value of lease payments. Our lease terms may include options to extend or terminate the lease. Options are included when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Amendments or modifications to lease terms are accounted for as variable lease payments. Leases with a lease term of 12 months or less are accounted for using the practical expedient which allows for straight-line rent expense over the remaining term of the lease.
Segment Reporting	SEGMENT REPORTING — As of June 27, 2020, the Company owned and operated 20 restaurants and bars, 17 fast food concepts and catering operations, exclusively in the United States, that have similar economic characteristics, nature of products and services, class of customers and distribution methods. The Company believes it meets the criteria for aggregating its operating segments into a single reporting segment in accordance with applicable accounting guidance.
Recently Adopted Accounting Principles and New Accounting Standards Not Yet Adopted	RECENTLY ADOPTED ACCOUNTING PRINCIPLES — In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which amends the existing accounting standards for lease accounting, including requiring lessees to recognize assets and liabilities for leases with lease terms of more than 12 months. The new guidance also requires additional disclosures about leases. The Company adopted the new standard on September 29, 2019 (the first day of fiscal year 2020) using the modified retrospective approach, without restating comparative periods for those lease contracts for which we have taken possession of the property as of September 28, 2019. Accordingly, prior period amounts were not revised and continue to be reported in accordance with ASC Topic 840 (“ASC 840”), the accounting standard then in effect. As part of our adoption we elected the "package of practical expedients", as well as the hindsight practical expedient, permitted under the new guidance, which, among other things, allowed the Company to continue utilizing historical classifications of leases as well as allowing us to combine lease and non-lease components of our real estate leases. We also elected to adopt the short-term lease exception for all leases with terms of 12 months or less and account for them using straight-line rent expense over the remaining life of the lease. As a result of the adoption of this guidance, we recorded ROU assets of $62,330,000 and lease liabilities related to our real estate operating leases of $63,943,000. The adoption of this standard did not materially impact retained earnings or our consolidated condensed statement of operations and had no impact on cash flows. In June 2018, the FASB issued ASU 2018-07, Compensation - Stock Compensation (Topic 718): Improvements to Non-employee Share-Based Payment Accounting, which simplifies the accounting for share-based payments granted to non-employees for goods and services. Under this ASU, the guidance on share-based payments to non-employees would be aligned with the requirements for share-based payments granted to employees, with certain exceptions. The Company adopted this guidance in the first quarter of fiscal 2020. Such adoption did not have a material impact on our consolidated condensed financial statements. NEW ACCOUNTING STANDARDS NOT YET ADOPTED — In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which modifies Topic 740 to simplify the accounting for income taxes. ASU 2019-12 is effective for financial statements issued for annual periods beginning after December 15, 2020, and for the interim periods therein. The Company is currently evaluating the effect of adopting ASU 2019-12 to determine the impact on the Company’s consolidated financial position and results of operations.