Note H - Leases (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 29, 2025	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024
Operating Lease, Payments	$ 378,000	$ 384,000	$ 771,000	$ 749,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	18 years 7 months 6 days		18 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	4.60%		4.60%
Operating Lease, Lease Income, Lease Payments	$ 583,000	$ 569,000	$ 1,166,000	$ 1,120,000