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Other Financial Information - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Prepaid expenses $ 171,602 $ 3,601
Other current assets 9,662 4,376
Prepaid expenses and other current assets $ 181,264 $ 7,977