Acquisition-Related Amortization and Remeasurement - Components of Acquisition-Related Amortization and Remeasurement (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Acquisition Related Amortization And Remeasurement [Abstract]
Amortization of acquired intangibles	$ 2,070	$ 1,965	$ 6,122	$ 5,903
Changes in fair value of contingent consideration	(986)	(2,300)	(17,200)	(2,375)
Acquired IPR&D	1,400		1,400	1,500
Total	$ 2,484	$ (335)	$ (9,678)	$ 5,028