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Goodwill and Intangible Assets - Future Amortization Expense for Intangible Assets (Details) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 26, 2020
Fiscal year 2022 $ 4,942  
Fiscal year 2023 4,002  
Fiscal year 2024 1,676  
Fiscal year 2025 288  
Fiscal year 2026 288  
Thereafter 550  
Total expected amortization expense 11,746 $ 20,012
Core technologies    
Total expected amortization expense 11,746 19,423
Customer relationships    
Total expected amortization expense $ 0 $ 589