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Accrued Expenses (Tables) | 6 Months Ended
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Jun. 30, 2021
Payables and Accruals [Abstract] |
Summary of Accrued Expenses | Accrued expenses consisted of:
|  | As of
(in thousands) |  | June 30, 2021 |  | December 31, 2020
Accrued payroll and related expenses |  | $ | 2,879 |  |  | $ | 6,686 |
Accrued operating expenses |  | 2,904 |  |  | 1,545 |
Other accrued expenses |  | 1,689 |  |  | 975 |
Total accrued expenses |  | $ | 7,472 |  |  | $ | 9,206 |

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