Note 10 - Share Capital (Details Textual) - The 2020 ATM Offering [Member] - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2022 |
Dec. 31, 2021 |
May 05, 2020 |
|
| Stock Issuance Program, Authorized Amount | $ 75,000 | ||
| Stock Issued During Period, Shares, New Issues (in shares) | 0 | 15,315 | |
| Shares Issued, Price Per Share (in dollars per share) | $ 2.446 | ||
| Proceeds from Issuance of Common Stock, Gross | $ 37 | ||
| Proceeds from Issuance of Common Stock | $ 36 |
| X | ||||||||||
- Definition The gross amount of cash inflow received from the issuance of common stock, before stock issuance costs. No definition available.
|
| X | ||||||||||
- Definition Amount of stock issuance plan authorized. No definition available.
|
| X | ||||||||||
- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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
|
| X | ||||||||||
- Details
|