Note 4 - Leases - Costs (Details) - USD ($)	Dec. 31, 2022	Dec. 25, 2021
Current lease liability	$ 157,000	$ 155,000
Long-term lease liability	309,000	$ 431,000
Total operating lease liability	$ 466,000
Weighted-average remaining lease term for capitalized operating leases (in months) (Year)	38 years
Weighted-average discount rate for capitalized operating leases	6.60%