Restricted Cash - Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 229,133	$ 269,670	$ 285,126
Restricted cash, included in prepaid expenses and other current assets	$ 552	$ 5,816	$ 5,569
Restricted Cash, Current, Asset, Statement of Financial Position [Extensible List]	us-gaap:PrepaidExpenseAndOtherAssetsCurrent	us-gaap:PrepaidExpenseAndOtherAssetsCurrent	us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Restricted cash, included in other assets	$ 3,029	$ 3,029	$ 451
Restricted Cash, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets	us-gaap:OtherAssets	us-gaap:OtherAssets
Total cash, cash equivalents, and restricted cash	$ 232,714	$ 278,515	$ 291,146