Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Cash and cash equivalents	$ 1,713,387	$ 100,311
Restricted cash	2,038	2,226
Total cash, cash equivalents and restricted cash	$ 1,715,425	$ 102,537	$ 35,886	$ 33,563