Note 10 - Share Capital (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Aug. 10, 2020 |
Sep. 30, 2021 |
Dec. 31, 2020 |
May 05, 2020 |
|
| July 2020 Confidentially Marketed Public Offering [Member] | ||||
| Stock Issued During Period, Shares, New Issues (in shares) | 11,854,472 | |||
| Shares Issued, Price Per Share (in dollars per share) | $ 5.25 | |||
| Proceeds from Issuance of Common Stock, Gross | $ 62,236 | |||
| Proceeds from Issuance of Common Stock, Net of Share Issuance Costs | $ 58,234 | |||
| Stock Issuance, Percent of Cash Commission to Broker | 6.00% | |||
| The 2020 ATM Offering [Member] | ||||
| Stock Issued During Period, Shares, New Issues (in shares) | 0 | 0 | ||
| Stock Issuance Program, Authorized Amount | $ 75,000 |
| 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 Cash inflow from the issuance of common stock, net of share 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 Amount of stock issuance plan authorized. No definition available.
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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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