Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 liabilities, beginning balance	$ 24,706	$ 9,000
Additions		13,300
Payment of Breethe contingent consideration at acquisition date fair value	(2,334)
Change in fair value	(862)	2,406
Level 3 liabilities, ending balance	21,510	24,706
Level 3
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 liabilities, beginning balance	24,700
Level 3 liabilities, ending balance	$ 21,500	$ 24,700