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Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands | Jul. 28, 2019 | Jan. 27, 2019
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Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | $ 4,829 | $ 6,675
Amount expected to be settled within twelve months | 4,829 |
Compensation expense |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 4,367 | 4,052
Not conditional upon continued employment |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 462 | 2,623
Cycleo |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 4,829 | 4,514
Amount expected to be settled within twelve months | 4,829 |
Cycleo | Compensation expense |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 4,367 | 4,052
Cycleo | Not conditional upon continued employment |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 462 | 462
AptoVision |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 0 | 2,161
Amount expected to be settled within twelve months | 0 |
AptoVision | Compensation expense |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | 0 | 0
AptoVision | Not conditional upon continued employment |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Earn-out liability recorded | $ 0 | $ 2,161

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