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CONSOLIDATED FINANCIAL STATEMENT DETAILS - Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 476,625 $ 812,705 $ 855,044 $ 390,565
Restricted cash included in other current assets 272 407 392 504
Restricted cash included in other non-current assets 1,216 449 429 409
Total cash and cash equivalents, and restricted cash as shown on the consolidated statement of cash flows $ 478,113 $ 813,561 $ 855,865 $ 391,478