Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note 5 - Share-based Compensation Plans (Details Textual) - The 2020 Equity Incentive Plan [Member] - USD ($)		12 Months Ended
	Mar. 03, 2020	Dec. 30, 2023	Dec. 31, 2022	Dec. 26, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)				1,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)		832,700
Share-Based Payment Arrangement, Expense		$ 204,797	$ 250,359
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 560,815
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		2 years 6 months 18 days
Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Share-Based Payment Arrangement, Option [Member] \| Share-Based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	5 years