Other Assets - Summary of Components of Other Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Investment in Shockwave Medical	$ 56,730	$ 61,535
Other investments (Note 6)	79,636	70,314
Operating lease right of use assets	8,365	9,518
Other intangible assets and other assets	10,073	6,118
Total other assets	$ 154,804	$ 147,485