Note E - Business Segments - Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 25, 2020	Jun. 30, 2020	Jun. 30, 2019
Segment Assets	$ 306,583	$ 294,127	$ 294,127
Operating Segments [Member] | Manufacturing Segment [Member]
Segment Assets	373,405		365,417
Operating Segments [Member] | Distribution Segment [Member]
Segment Assets	45,534		43,118
Corporate, Non-Segment [Member]
Segment Assets	$ (112,356)		$ (114,408)