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Organization and Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Organization and Significant Accounting Policies        
Cash and cash equivalents $ 63,547 $ 417,195 $ 541,158 $ 177,668
Restricted cash, non-current 440 440 440 240
Total cash, cash equivalents and restricted cash $ 63,987 $ 417,635 $ 541,598 $ 177,908