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Prepaid and Other Current Assets | 3 Months Ended
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Mar. 31, 2021
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] |
Prepaid and Other Current Assets | 4. PREPAID AND OTHER CURRENT ASSETS Prepaid and other current assets consisted of the following:
|  | March 31, |  |  | December 31, |
|  | 2021 |  |  | 2020 |
Deposits |  | $ | 796 |  |  | $ | 708 |
Prepaid expenses |  |  | 5,613 |  |  |  | 3,510 |
Supplies |  |  | 2,421 |  |  |  | 2,491 |
Prepaid and other current assets |  | $ | 8,830 |  |  | $ | 6,709 |

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