Debt and Financing Arrangements - Net Carrying Amount (Details) - Convertible Senior Notes - USD ($) $ in Thousands	Oct. 31, 2025	Jan. 31, 2025	Oct. 13, 2023
Liability Component:
Principal	$ 402,500	$ 460,000
Unamortized issuance costs	(7,368)	(9,292)
Net carrying amount	395,132	450,708
2025 Notes
Liability Component:
Principal	0	57,500
Unamortized issuance costs	0	(74)
Net carrying amount	0	57,426
2028 Notes
Liability Component:
Principal	402,500	402,500	$ 402,500
Unamortized issuance costs	(7,368)	(9,218)
Net carrying amount	$ 395,132	$ 393,282

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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