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Debt and Financing Arrangements - Interest Expense (Details) - Convertible Senior Notes - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Debt Instrument [Line Items]
Contractual interest expense	$ 1,540	$ 879
Amortization of debt issuance costs	608	455
Total interest expense related to the Notes	$ 2,148	$ 1,334

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Amount of amortization expense attributable to debt issuance costs.

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