Note K - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Weighted Average Remaining Lease Term – Operating Leases (in years) (Year)	8 years 3 months 14 days	9 years 3 months 14 days	8 years 3 months 14 days	9 years 3 months 14 days
Operating Lease Cost	$ 388	$ 393	$ 1,137	$ 1,073
Weighted Average Discount Rate – Operating Leases	5.21%	5.00%	5.21%	5.00%
Short-term Lease Cost	$ 388	$ 658	$ 1,611	$ 1,882
Variable Lease Cost	117	81	415	393
Total Operating Lease Cost	893	1,132	3,163	3,348
Operating Lease – Operating Cash Flows	266	100	759	712
New ROU Assets – Operating Leases (non-cash)	$ 242	$ 30	$ 325	$ 7,773