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Supplemental Financial Statement Information - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Prepaid maintenance contracts $ 8,448 $ 7,715
Prepaid licenses 3,302 0
Prepaid expenses 23,828 6,628
Prepaid insurance 672 1,672
Others 403 646
Prepaid expenses and other current assets $ 36,653 $ 16,661 [1]
[1] See Note 1 – Summary of Business and Significant Accounting Policies