Fair Value Measurements - Classification of Available-for-Sale Short-Term Investments by Contractual Maturities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	$ 354,774	$ 299,032
Due after one year and within three years	205,210	276,222
Total	$ 559,984	$ 575,254

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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