Note N - Share-based Compensation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 25, 2022	Sep. 26, 2021	Sep. 25, 2022	Sep. 26, 2021
Share-Based Payment Arrangement, Expense	$ 8	$ 29	$ 16	$ 58
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 98		$ 98
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)			17 months