Segment And Geographic Information (Schedule Of Sales and Long-Lived Assets, Net By Geographical Regions) (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 76,822	$ 84,693	$ 77,947
Tangible long-lived assets, net	6,538	6,613
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	24,700	23,200
Tangible long-lived assets, net	209	173
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	9,900	10,300
Tangible long-lived assets, net	1,166	1,263
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	13,400	14,000
Tangible long-lived assets, net	$ 97	$ 71