Note 4 - Inventories (Details Textual) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Jun. 30, 2020 |
Sep. 30, 2020 |
Dec. 31, 2019 |
|
| Slow Moving Medical Finished Goods [Member] | |||
| Inventory Valuation Reserves, Ending Balance | $ 450,000 | $ 450,000 | |
| Slow Moving Dental Finished Goods [Member] | |||
| Inventory Valuation Reserves, Ending Balance | $ 7,000 | $ 318,000 | |
| Inventory Write-down | $ 311,000 |
| X | ||||||||||
- Definition Amount of valuation reserve for inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|