Note D - Revenues - Revenues by Geographical Market (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 24, 2023	Dec. 25, 2022	Dec. 24, 2023	Dec. 25, 2022
Revenues	$ 28,890	$ 26,154	$ 109,619	$ 103,371
UNITED STATES
Revenues	27,644	24,824	104,970	98,836
Non-US [Member]
Revenues	$ 1,246	$ 1,330	$ 4,649	$ 4,535