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Prepaid and Other Current Assets - Schedule of Prepaid and Other Current Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]    
Deposits $ 795 $ 708
Prepaid expenses 6,574 3,510
Supplies 2,470 2,491
Prepaid and other current assets $ 9,839 $ 6,709