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, 2020	Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 62,262	$ 76,822
Tangible long-lived assets, net	5,750	6,538
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	20,600	24,700
Tangible long-lived assets, net	148	209
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	8,400	9,900
Tangible long-lived assets, net	1,095	1,166
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	10,600	13,400
Tangible long-lived assets, net	$ 64	$ 97