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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jul. 26, 2020 | Jan. 26, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 43,300 | $ 88,857
Accumulated Amortization | (28,148) | (68,845)
Total expected amortization expense | 15,152 | 20,012
Core technologies |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 43,300 | 82,857
Accumulated Amortization | (28,148) | (63,434)
Total expected amortization expense | $ 15,152 | 19,423
Core technologies | Minimum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life | 3 years |
Core technologies | Maximum |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful life | 8 years |
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 0 | 6,000
Accumulated Amortization | 0 | (5,411)
Total expected amortization expense | $ 0 | $ 589

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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