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Debt - Outstanding Debt (Details) - USD ($)
$ in Thousands
Jul. 31, 2021
Jan. 31, 2021
Debt Instrument [Line Items]    
Total debt $ 1,856,597 $ 1,795,014
Less: current debt (1,201,964) (1,103,101)
Total debt, noncurrent 654,633 691,913
Term Loan    
Debt Instrument [Line Items]    
Unamortized debt discount 1,480 1,682
Unamortized debt issuance costs 137 155
Total debt 710,883 729,413
2022 Notes    
Debt Instrument [Line Items]    
Unamortized debt discount 0 79,562
Unamortized debt issuance costs 4,147 4,771
Total debt $ 1,145,714 $ 1,065,601