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Intangible Assets Expected Future Amortization Expense (Details) - USD ($)
$ in Thousands
Oct. 31, 2020
Jan. 31, 2020
Business Combinations [Abstract]    
Remaining fiscal 2021 $ 13,018  
Fiscal 2022 46,873  
Fiscal 2023 42,831  
Fiscal 2024 37,886  
Fiscal 2025 31,182  
Thereafter 27,420  
Total $ 199,210 $ 238,415