Note D - Goodwill and Other Intangibles - Goodwill Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Balance, gross carrying amount	$ 16,407	$ 16,392
Translation adjustment	107	15
Balance, gross carrying amount	16,514	16,407	$ 16,392
Balance, accumulated impairment	(13,822)	(11,272)
Impairment		(2,550)	(7,602)
Balance, accumulated impairment	(13,822)	(13,822)	(11,272)
Balance, net book value	2,585	5,120
Impairment		(2,550)	(7,602)
Translation adjustment	107	15
Balance, net book value	2,692	2,585	5,120
Industrial [Member] \| UNITED STATES
Translation adjustment
Impairment		(2,550)
Balance, net book value		2,550
Impairment		(2,550)
Translation adjustment
Balance, net book value			2,550
Industrial [Member] \| Europe [Member]
Translation adjustment	107	15
Impairment
Balance, net book value	2,585	2,570
Impairment
Translation adjustment	107	15
Balance, net book value	2,692	2,585	2,570
Marine and Propulsion Systems [Member] \| Europe [Member]
Translation adjustment
Impairment
Balance, net book value
Impairment
Translation adjustment
Balance, net book value

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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