Note 6 - Interest Expense - Interest Expense Components (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Amortization of prepaid financing costs	$ 22	$ 55
Accretion of discount on Convertible Note - CD Financial		3
Interest on financed lease obligations	13	19
Interest Expense	397	630
Other interest expense	26	24
CD Financial LLC [Member]
Interest expense related party		115
Other Related Party [Member]
Interest expense related party		24
Senior Notes [Member]
Interest on Senior Debt	336	387
Term Note [Member] \| PNC Equipment Finance LLC [Member]
Interest Expense		$ 3

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of the cost of borrowed funds accounted for as interest expense.

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