Note 7 - Income Taxes - Significant Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Net operating loss	$ 7,642	$ 8,247
Capital loss carryover	16	21
Valuation adjustment on investment in iBio, Inc.	512	512
Depreciation	(225)	(223)
Inventory	104	105
Other	31	42
Valuation allowance	(7,546)	(8,137)
Total deferred tax asset, net	$ 534	$ 567

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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