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Acquisitions - Narrative (Details) - USD ($) $ in Thousands | Aug. 17, 2018 | May 02, 2018 | Jan. 31, 2021 | Jan. 26, 2020 | Jan. 27, 2019
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Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  | $ 351,141 | $ 351,141 |
Trackio International AG |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price | $ 8,500 |  |  |  |
Goodwill | 4,300 |  |  |  | $ 4,316
Finite-lived intangible asset | 3,000 |  |  |  | $ 3,000
Tangible assets | $ 300 |  |  |  |
ICI |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price |  | $ 7,400 |  |  |
Goodwill |  | 4,900 |  |  |
Tangible assets |  | $ 2,500 |  |  |

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