Note E - Business Segments - Net Sales by Product Group (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2022	Sep. 24, 2021
Net Sales	$ 55,913	$ 47,761
Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	48,997	41,594
Operating Segments [Member] | Distribution Segment [Member]
Net Sales	24,307	20,534
Intersegment Eliminations [Member]
Net Sales	(17,391)	(14,367)
Intersegment Eliminations [Member] | Manufacturing Segment [Member]
Net Sales	(13,643)	(10,942)
Intersegment Eliminations [Member] | Distribution Segment [Member]
Net Sales	(3,748)	(3,425)
Industrial [Member]
Net Sales	7,031	6,132
Industrial [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	6,692	5,907
Industrial [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	1,048	1,118
Industrial [Member] | Intersegment Eliminations [Member]
Net Sales	(709)	(893)
Land Based Transmissions [Member]
Net Sales	15,937	12,242
Land Based Transmissions [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	16,287	11,384
Land Based Transmissions [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	4,606	5,105
Land Based Transmissions [Member] | Intersegment Eliminations [Member]
Net Sales	(4,956)	(4,247)
Marine and Propulsion Systems [Member]
Net Sales	29,338	26,633
Marine and Propulsion Systems [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	25,816	24,285
Marine and Propulsion Systems [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	14,544	11,562
Marine and Propulsion Systems [Member] | Intersegment Eliminations [Member]
Net Sales	(11,022)	(9,214)
Other [Member]
Net Sales	3,607	2,754
Other [Member] | Operating Segments [Member] | Manufacturing Segment [Member]
Net Sales	202	18
Other [Member] | Operating Segments [Member] | Distribution Segment [Member]
Net Sales	4,109	2,749
Other [Member] | Intersegment Eliminations [Member]
Net Sales	$ (704)	$ (13)