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Note 14 - Contingently Redeemable Noncontrolling Interests (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 13, 2022 | Nov. 12, 2020 | Jun. 30, 2022 | Dec. 31, 2020
SEED Therapeutics Inc. [Member] |  |  |  |
Share Price (in dollars per share) |  | $ 7.5375 |  |
Proceeds from Issuance Initial Public Offering |  | $ 50,000 |  |
Research Collaboration and License Agreement with Eli Lilly [Member] | SEED Therapeutics Inc. [Member] |  |  |  |
Derivative Liability, Total | $ 1,237 |  |  | $ 278
Series A-2 Preferred Shares [Member] | Research Collaboration and License Agreement with Eli Lilly [Member] |  |  |  |
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value | 3,763 |  |  | 5,267
Series A-2 Preferred Shares [Member] | Research Collaboration and License Agreement with Eli Lilly [Member] | SEED Therapeutics Inc. [Member] |  |  |  |
Annual Return, Percentage |  | 8.00% |  |
Number of Annual Redemption Installments |  | 3 |  |
Temporary Equity, Stock Issued During Period, Value, New Issues |  |  |  | $ 0
Stock Issued During Period, Value, New Issues | $ 5,000 |  | $ 5,000 |
Stock Issued During Period, Shares, New Issues (in shares) | 1,990,000 | 1,990,000 | 1,990,000 |

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