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Accrued and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Payables And Accruals [Abstract] |
Schedule of Accrued and Other Current Liabilities | Accrued and other current liabilities consist of the following:
|  | December 31, |
|  | 2020 |  |  | 2019 |
Research and development services |  | $ | 1,294 |  |  | $ | 231 |
General and administrative services |  |  | 160 |  |  |  | 297 |
Compensation expense |  |  | 2,445 |  |  |  | 1,522 |
Other |  |  | 38 |  |  |  | 177 |
|  | $ | 3,937 |  |  | $ | 2,227 |

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