Income Taxes (Schedule Of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Taxes [Abstract]
Benefit of net operating losses	$ 8,787	$ 9,268	$ 8,582
Tax credit carry-forwards	5,284	5,451	5,006
Deferred Revenue	2,073	1,434	1,665
Impaired Investment	1,054	1,060	1,012
Property and intangible assets	187	242
Other	2,161	3,029	574
Deferred tax asset	19,546	20,484	16,839
Valuation allowance	(19,099)	(19,453)	(3,104)
Total deferred tax assets	447	1,031	13,735
Deferred tax liabilities - basis difference and amortization	(1,623)	(1,631)	(1,798)
Net deferred tax liabilities	$ (1,176)	$ (600)
Net deferred tax assets			$ 11,937