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Note 8 - Outstanding Warrants - Schedule of Warrants or Rights (Details) - $ / shares shares in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Outstanding, warrants (in shares) | 55 | 95 |
Outstanding, Weighted - Average Exercise Price (in dollars per share) | $ 15.92 | $ 2.59 | $ 2.59
Outstanding, Average Remaining Term in Years (Year) | 7 years 5 months 23 days | 3 years 11 months 12 days | 4 years 11 months 12 days
Granted, warrants (in shares) | 527 | 292 |
Granted, Weighted - Average Exercise Price (in dollars per share) | $ 10.47 | $ 0.01 |
Exercised, warrants (in shares) | (227) | (332) |
Exercised, Weighted - Average Exercise Price (in dollars per share) | $ 0.01 | $ 0.32 |
Outstanding, warrants (in shares) | 355 | 55 |

X
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X
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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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