Note H - Leases (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Operating Lease, Payments	$ 373,000	$ 339,000	$ 1,122,000	$ 1,048,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	19 years 1 month 6 days		19 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.70%		4.70%
Operating Lease, Lease Income, Lease Payments	$ 569,000	$ 551,000	$ 1,689,000	$ 1,653,000