Note I - Goodwill and Other Intangibles (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 27, 2019	Dec. 28, 2018	Jun. 30, 2019
Goodwill, Ending Balance	$ 25,561		$ 25,561		$ 25,954
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years
Amortization of Intangible Assets, Total	$ 1,143	$ 583	2,272	$ 1,249
Indefinite-lived Intangible Assets (Excluding Goodwill), Ending Balance	200		200		200
European Propulsion [Member]
Goodwill, Ending Balance	23,013		23,013		23,371
European Industrial [Member]
Goodwill, Ending Balance	$ 2,548		$ 2,548		$ 2,583