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Debt - Schedule of Net Carrying Amounts of Liability Component of Notes (Details) - 0.00% Convertible Senior Notes Due January 15, 2026 - Convertible Senior Notes - USD ($)	Apr. 30, 2022	Jan. 31, 2022	Jan. 31, 2021
Debt Instrument [Line Items]
Debt instrument, principal amount	$ 345,000,000	$ 345,000,000	$ 345,000,000.0
Unamortized issuance costs	(7,066,000)	(7,537,000)
Net carrying amount	$ 337,934,000	$ 337,463,000

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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