Goodwill, In-Process Research and Development and Intellectual Property - Summary of Estimated Future Amortization Expense of Intangible Assets (Detail) - Intellectual Property - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
2020	$ 10,328
2021	10,328
2022	7,757
2023	42
2024	42
Thereafter	99
Total	$ 28,596	$ 39,716