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Note 19 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ / shares in Units, $ in Millions | Jul. 26, 2023 USD ($) $ / shares shares
--- | ---
Proceeds from Issuance of Private Placement | $ | $ 120.0
Monograph Capital Partners [Member] |
Proceeds from Issuance of Private Placement | $ | $ 15.0
Pre-funded Warrant [Member] |
Class of Warrants or Rights, Issuance Price Per Share (in dollars per share) | $ / shares | $ 9.539
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | $ 0.001
Private Placement [Member] |
Stock Issued During Period, Shares, New Issues (in shares) | shares | 12,579,156
Shares Issued, Price Per Share (in dollars per share) | $ / shares | $ 9.54
Placement Agents and Financial Advisors Fees | $ | $ 3.6
Private Placement [Member] | Monograph Capital Partners [Member] |
Stock Issued During Period, Shares, New Issues (in shares) | shares | 1,572,327

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