Note 10 - Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Commitments and Contingencies Disclosure [Abstract] | ||||
| Rent expense | $ 35 | $ 54 | $ 69 | $ 9 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|