Summary of Significant Accounting Policies - Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 269,670	$ 111,489
Restricted cash	5,816	5,175
Restricted cash included in other assets	$ 3,029	$ 450
Restricted Cash, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets	us-gaap:OtherAssets
Total cash, cash equivalents, and restricted cash	$ 278,515	$ 117,114