Leases (Details) - Schedule of supplemental cash flow disclosures - USD ($) $ in Thousands	6 Months Ended
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

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

No definition available.

Name:	gtim_RightOfUseAssetObtainedInExchangeForOperatingLeasesLiability
Namespace Prefix:	gtim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration