Note D - Fair Values of Financial Instruments - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Oct. 02, 2022	Oct. 01, 2022	Dec. 25, 2021	Oct. 02, 2021
Cash and cash equivalents	$ 4,000		$ 4,374	$ 6,492
Current portion of long-term debt	7,143		7,143	7,143
Long-term debt	99,568		50,396	51,874
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents		$ 4,000	4,374	6,492
Fair Value, Inputs, Level 2 [Member]
Current portion of long-term debt	7,143		7,143	7,143
Long-term debt	$ 99,568		$ 50,396	$ 51,874