Description of Business and Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 105,035	$ 73,228	$ 137,858
Restricted cash	8,519	35,051	8,317
Restricted cash included in other long-term assets	6,659	3,090	3,506
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 120,213	$ 111,369	$ 149,681	$ 70,867