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Condensed Consolidated Statements of Cash Flows (unaudited) - Reconciliation of Cash, Cash Equivalents and Restricted Cash and Supplemental Disclosure of Non-cash Investing and Financing Activities - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Reconciliation of cash, cash equivalents, and restricted cash    
Cash and cash equivalents $ 1,260,220 $ 214,960
Restricted cash 7,800 7,800
Total cash, cash equivalents, and restricted cash 1,268,020 222,760
Supplemental disclosures of non-cash investing and financing activities:    
Purchase of property and equipment accrued and not yet paid 1,193 99
Deferred offering costs not yet paid 0 647
Conversion of redeemable convertible preferred stock to common stock $ 0 $ 809