Note 3 - Selected Balance Sheet Data (Details Textual) - USD ($) |
Mar. 31, 2020 |
Jun. 30, 2019 |
|---|---|---|
| Other Noncurrent Assets [Member] | ||
| Inventory, Finished Goods, Net of Reserves, Non-current | $ 3,649 | $ 3,239,000 |
| X | ||||||||||
- Definition Non-current amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. No definition available.
|
| X | ||||||||||
- Details
|