Summary of Significant Accounting Policies - Summary of Cash Reported in Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents	$ 101,436	$ 246,122
Restricted cash included in prepaid expenses and other current assets	337
Restricted cash included in restricted cash and other	1,857	2,143
Total cash, cash equivalents and restricted cash shown in the consolidated statements of cash flows	$ 103,630	$ 248,265	$ 224,857	$ 136,057