v3.19.3
Note 4 - Property and Equipment, Net (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Depreciation, Total $ 2,000 $ 2,000 $ 4,000 $ 4,000