0.5% Convertible Senior Notes and Capped Call - Schedule of Interest Expense (Details) - Convertible Debt - Convertible Senior Notes Due 2023 - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Amortization of debt discount	$ 0	$ 20,516
Amortization of issuance costs	2,357	1,820
Contractual interest expense	2,496	2,501
Total interest expense	$ 4,853	$ 24,837

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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