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Business and Significant Accounting Policies - Schedule of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]        
Cash and cash equivalents $ 756,493 $ 712,583 $ 280,836 $ 156,368
Restricted cash classified in:        
Prepaid expenses and other current assets 4,109 0 0 2,295
Cash and cash equivalents and restricted cash per the Consolidated Statements of Cash Flows $ 760,602 $ 712,583 $ 280,836 $ 158,663