v3.26.1
Debt and Financing Arrangements - Interest Expense (Details) - Convertible Senior Notes - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Debt Instrument [Line Items]        
Contractual interest expense $ 1,507 $ 1,632 $ 3,019 $ 3,318
Amortization of debt issuance costs 606 654 1,201 1,332
Total interest expense related to the 2025 Notes and the 2028 Notes $ 2,113 $ 2,286 $ 4,220 $ 4,650