Other Current and Non-Current Liabilities - Schedule of Other Non-Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Liabilities Noncurrent [Abstract]
Contingent consideration payable	$ 140,100	$ 31,700
Accrued restructuring liability		7,613
Uncertain tax positions liability, including interest and penalties	15,851	10,065
Other non-current liabilities	2,462	3,208
Total other non-current liabilities	$ 158,413	$ 52,586