Other Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022
Goodwill [Line Items]
Investment in Shockwave Medical	$ 56,730		$ 61,535
Operating lease right of use assets	8,365		9,518
Shockwave Medical
Goodwill [Line Items]
Investment in Shockwave Medical	56,700		$ 61,500
Shockwave Medical \| Other Income (Expense)
Goodwill [Line Items]
Gain (loss) recorded in other income (expense)	$ (4,800)	$ 17,600

Amount of realized and unrealized gain (loss) on investment.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of lessee's right to use underlying asset under operating lease.

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