Revenue (Details) - USD ($)	9 Months Ended
Jun. 30, 2026	Jul. 01, 2025
Revenue [Abstract]
Franchise and other revenues	$ 243,000	$ 275,000

The amount of regulated other operating revenues recognized during the period.

No definition available.

Name:	us-gaap_RegulatedOperatingRevenueOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration