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Note 10 - Accrued Expenses and Other Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2021 |  |  | 2020 |
Compensation and related expenses |  | $ | 9,523 |  |  | $ | 7,345 |
Professional fees |  |  | 3,590 |  |  |  | 3,438 |
Operating lease liability - current |  |  | 1,526 |  |  |  | 1,437 |
Clinical trial costs |  |  | 1,961 |  |  |  | 1,429 |
Finance lease liability - current |  |  | 188 |  |  |  | 148 |
Other |  |  | 1,059 |  |  |  | 996 |
Total |  | $ | 17,847 |  |  | $ | 14,793 |

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