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Note 14 - Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2023
Notes Tables |
Fair Value, by Balance Sheet Grouping [Table Text Block] |
|  | March 31, 2023 |
|  | (in thousands) |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit (1) |  | $ | — |  |  | $ | 1,707 |  |  | $ | — |  |  | $ | 1,707 |
Money funds (2) |  |  | — |  |  |  | 190,734 |  |  |  | — |  |  |  | 190,734 |
Short term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit (1) |  |  | — |  |  |  | 2,879 |  |  |  | — |  |  |  | 2,879 |
Total |  | $ | — |  |  | $ | 195,320 |  |  | $ | — |  |  | $ | 195,320 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out shares liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out shares (3) |  | $ | — |  |  | $ | — |  |  | $ | 6,922 |  |  | $ | 6,922 |
Other non-current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant liabilities (3) |  |  | — |  |  |  | 227 |  |  |  | — |  |  |  | 227 |
Total |  | $ | — |  |  | $ | 227 |  |  | $ | 6,922 |  |  | $ | 7,149 |
|  | December 31, 2022 |
|  | (in thousands) |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit (1) |  | $ | — |  |  | $ | 1,693 |  |  | $ | — |  |  | $ | 1,693 |
Money funds (2) |  |  | — |  |  |  | 188,769 |  |  |  | — |  |  |  | 188,769 |
Short term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit (1) |  |  | — |  |  |  | 2,620 |  |  |  | — |  |  |  | 2,620 |
Other assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit (1) |  |  | — |  |  |  | 162 |  |  |  | — |  |  |  | 162 |
Total |  | $ | — |  |  | $ | 193,244 |  |  | $ | — |  |  | $ | 193,244 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out shares liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out shares (3) |  | $ | — |  |  | $ | — |  |  | $ | 6,631 |  |  | $ | 6,631 |
Other non-current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant liabilities (3) |  |  | — |  |  |  | 227 |  |  |  | — |  |  |  | 227 |
Total |  | $ | — |  |  | $ | 227 |  |  | $ | 6,631 |  |  | $ | 6,858 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2023 |
|  | (in thousands) |
Opening balance |  | $ | 6,631 |
Total gains or losses from the period |  |  |  |
Included in earnings |  |  | 109 |
Reclass from Earnout-RSU |  |  | 182 |
Closing balance |  | $ | 6,922 |

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