Note 12 - Subsequent Events (Details Textual) |
1 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Aug. 02, 2019 |
Aug. 01, 2019 |
Jul. 31, 2019
USD ($)
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
|
| Proceeds from Related Party Debt | $ 3,996,000 | $ 1,500,000 | |||
| Subsequent Event [Member] | Reverse Stock Split [Member] | Minimum [Member] | |||||
| Stockholders' Equity Note, Stock Split, Conversion Ratio | 2 | 2 | |||
| Subsequent Event [Member] | Reverse Stock Split [Member] | Maximum [Member] | |||||
| Stockholders' Equity Note, Stock Split, Conversion Ratio | 10 | 10 | |||
| Domain [Member] | Subsequent Event [Member] | |||||
| Proceeds from Related Party Debt | $ 600,000 | ||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | ||||