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Leases (Details) - Schedule of supplemental cash flow disclosures - USD ($) $ in Thousands | 6 Months Ended
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Mar. 28, 2023 | Mar. 29, 2022
Schedule of Supplemental Cash Flow Disclosures [Abstract] |  |
Cash paid for operating lease liabilities | $ 3,734 | $ 3,621
Non-cash operating lease assets obtained in exchange for operating lease liabilities | $ 184 | $ 872

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

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- Definition Amount of cash outflow for operating lease liabilities. + References No definition available. + Details
Name: | gtim_OperatingLeaseLiabilitiesPayments
Namespace Prefix: | gtim_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References No definition available. + Details
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Namespace Prefix: | gtim_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration