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PREPAID EXPENSES AND OTHER CURRENT ASSETS | 12 Months Ended
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Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
PREPAID EXPENSES AND OTHER CURRENT ASSETS | PREPAID EXPENSES AND OTHER CURRENT ASSETS Prepaid expenses and other current assets consist of the following as of December 31, 2021 and 2020 (in thousands):
| 2021 |  | 2020
Insurance | $ | 3,482 |  |  | $ | 107 |
Vendor advances | 1,103 |  |  | 473 |
Accounts receivable | 517 |  |  | — |
Other | 259 |  |  | 213 |
Total prepaid expenses and other current assets | $ | 5,361 |  |  | $ | 793 |

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