Acquisition-Related Amortization and Remeasurement - Components of Acquisition-Related Amortization and Remeasurement (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Acquisition Related Amortization And Remeasurement [Abstract]
Amortization of acquired intangibles	$ 2,051	$ 1,969	$ 4,052	$ 3,938
Changes in fair value of contingent consideration	(10,714)	(1,575)	(16,214)	(75)
Acquired IPR&D		500		1,500
Total	$ (8,663)	$ 894	$ (12,162)	$ 5,363