Note 12 - Subsequent Events (Details Textual) - The 2018 Purchase Agreement [Member] - USD ($) |
1 Months Ended | 3 Months Ended | 10 Months Ended | ||
|---|---|---|---|---|---|
Jun. 08, 2018 |
May 06, 2019 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2019 |
|
| Stock Issued During Period, Shares, New Issues | 170,261 | 3,259,955 | |||
| Shares Issued, Price Per Share | $ 1.84 | $ 1.84 | |||
| Proceeds from Issuance of Common Stock, Net | $ 6,000,000 | $ 7,900,000 | |||
| Subsequent Event [Member] | |||||
| Stock Issued During Period, Shares, New Issues | 2,242,478 | ||||
| Shares Issued, Price Per Share | $ 1.7837 | ||||
| Proceeds from Issuance of Common Stock, Net | $ 4,000,000 | ||||
| X | ||||||||||
- Definition Cash inflow from the issuance of common stock, net of share issuance costs. No definition available.
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| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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