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COMMITMENT AND CONTINGENCIES (Details) $ in Thousands | 12 Months Ended
--- | ---
Oct. 03, 2020 USD ($) numberOfLeases
Commitments and Contingencies Disclosure [Abstract] |
Number of lease with irrevocable Letter of credit | numberOfLeases | 1
Letters of credit | $ | $ 238

X
- Definition Number Of Leases, Irrevocable Letter Of Credit + References No definition available. + Details
Name: | arkr_NumberOfLeasesIrrevocableLetterOfCredit
Namespace Prefix: | arkr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant