Property And Equipment (Summary Of Property And Equipment) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Gross Property and Equipment	$ 20,409	$ 20,291
Less: Accumulated Depreciation	(14,732)	(14,541)
Property and Equipment, Net	5,677	5,750
Building and Land [Member]
Property, Plant and Equipment [Line Items]
Gross Property and Equipment	7,701	7,658
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross Property and Equipment	11,412	11,338
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Gross Property and Equipment	$ 1,296	$ 1,295