Other Assets - Summary of Components of Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Investment in Shockwave Medical	$ 61,535	$ 38,655
Other investments (Note 5)	70,314	62,995	$ 38,741
Operating lease right-of-use assets (Note 11)	9,518	6,109
Other intangible assets and other assets	6,118	5,323
Total other assets	$ 147,485	$ 113,082