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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2021
Payables And Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities as of December 31, 2021 and 2020 consisted of the following (in thousands):
|  | December 31, |
|  | 2021 |  |  | 2020 |
Professional fees |  | $ | 3,687 |  |  | $ | 3,219 |
Clinical and contract research organization costs |  |  | 1,646 |  |  |  | 1,781 |
Travel and entertainment |  |  | 184 |  |  |  | 91 |
Tax liabilities |  |  | 391 |  |  |  | 1,767 |
Purchases of property and equipment |  |  | 615 |  |  |  | 4,423 |
Other |  |  | 2,820 |  |  |  | 1,881 |
Total accrued liabilities |  | $ | 9,343 |  |  | $ | 13,162 |

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