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Debt - Schedule of Interest Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Debt Disclosure [Abstract]        
Contractual interest expense $ 3,140 $ 4,245 $ 9,462 $ 11,675
Interest cost related to amortization of debt discount 101 11,374 303 38,993
Interest cost related to amortization of debt issuance costs 896 724 2,688 2,473
Total interest expense $ 4,137 $ 16,343 $ 12,453 $ 53,141