Note E - Business Segments and Foreign Operations - Net Sales by Product Group 2 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Dec. 29, 2023	Dec. 30, 2022
Net Sales	$ 72,994	$ 63,351	$ 136,547	$ 119,264
Intersegment Eliminations [Member]
Net Sales	(22,616)	(18,911)	(46,454)	(36,303)
Manufacturing Segment [Member] | Operating Segments [Member]
Net Sales	58,368	56,678	112,906	105,675
Manufacturing Segment [Member] | Intersegment Eliminations [Member]
Net Sales	(18,795)	(14,198)	(38,979)	(27,842)
Distribution Segment [Member] | Operating Segments [Member]
Net Sales	37,242	25,584	70,095	49,892
Distribution Segment [Member] | Intersegment Eliminations [Member]
Net Sales	(3,821)	(4,713)	(7,475)	(8,461)
Industrial [Member]
Net Sales	6,531	7,512	12,216	14,544
Industrial [Member] | Intersegment Eliminations [Member]
Net Sales	(730)	(1,177)	(1,364)	(1,886)
Industrial [Member] | Manufacturing Segment [Member] | Operating Segments [Member]
Net Sales	5,704	6,963	10,994	13,656
Industrial [Member] | Distribution Segment [Member] | Operating Segments [Member]
Net Sales	1,557	1,726	2,586	2,774
Land Based Transmissions [Member]
Net Sales	15,863	14,671	34,440	30,609
Land Based Transmissions [Member] | Intersegment Eliminations [Member]
Net Sales	(7,093)	(4,030)	(15,867)	(8,985)
Land Based Transmissions [Member] | Manufacturing Segment [Member] | Operating Segments [Member]
Net Sales	15,003	15,256	29,684	31,543
Land Based Transmissions [Member] | Distribution Segment [Member] | Operating Segments [Member]
Net Sales	7,953	3,445	20,623	8,051
Marine and Propulsion Systems [Member]
Net Sales	46,946	36,466	83,409	65,802
Marine and Propulsion Systems [Member] | Intersegment Eliminations [Member]
Net Sales	(14,773)	(13,223)	(29,197)	(24,246)
Marine and Propulsion Systems [Member] | Manufacturing Segment [Member] | Operating Segments [Member]
Net Sales	37,661	34,262	72,228	60,077
Marine and Propulsion Systems [Member] | Distribution Segment [Member] | Operating Segments [Member]
Net Sales	24,058	15,427	40,378	29,971
Other [Member]
Net Sales	3,654	4,702	6,482	8,309
Other [Member] | Intersegment Eliminations [Member]
Net Sales	(20)	(481)	(26)	(1,186)
Other [Member] | Manufacturing Segment [Member] | Operating Segments [Member]
Net Sales	0	197	(0)	399
Other [Member] | Distribution Segment [Member] | Operating Segments [Member]
Net Sales	$ 3,674	$ 4,986	$ 6,508	$ 9,096