Note 12 - Subsequent Event (Details Textual) - The 2022 Atm Offering [Member] - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 4 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
May 08, 2023 |
Apr. 01, 2023 |
Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2023 |
Dec. 31, 2022 |
|
| Common shares issued under the 2022 ATM Facility (in shares) | 46,427 | 72,541 | ||||
| Shares Issued, Price Per Share (in dollars per share) | $ 0.75 | $ 0.75 | $ 0.72 | |||
| Proceeds from Issuance of Common Stock, Gross | $ 35 | $ 87 | $ 52 | |||
| Proceeds from Issuance of Common Stock | $ 34 | $ 0 | $ 85 | $ 51 | ||
| Stock Issuance, Percent of Cash Commission to Broker | 3.00% | 3.00% | 3.00% | |||
| Subsequent Event [Member] | ||||||
| Common shares issued under the 2022 ATM Facility (in shares) | 767,352 | 648,384 | ||||
| Shares Issued, Price Per Share (in dollars per share) | $ 0.54 | $ 0.51 | ||||
| Proceeds from Issuance of Common Stock, Gross | $ 416 | $ 329 | ||||
| Proceeds from Issuance of Common Stock | $ 404 | $ 319 | ||||
| Stock Issuance, Percent of Cash Commission to Broker | 3.00% | |||||
| X | ||||||||||
- Definition The gross amount of cash inflow received from the issuance of common stock, before stock issuance costs. No definition available.
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| X | ||||||||||
- Definition The percent of cash commission payable to the broker of a stock issuance. No definition available.
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| X | ||||||||||
- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
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| 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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