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Commitments and Contingencies - Summary of Earn-out Liability (Details) - USD ($) $ in Thousands | Jul. 01, 2017 | Apr. 26, 2020 | Jan. 26, 2020
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Business Acquisition, Contingent Consideration [Line Items] |  |  |
Earn-out liability recorded |  | $ 1,958 | $ 2,108
Amount expected to be settled within twelve months |  | 1,958 |
Compensation expense |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Earn-out liability recorded |  | 1,713 | 1,830
Not conditional upon continued employment |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Earn-out liability recorded |  | 245 | $ 278
AptoVision |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Cash paid to to acquire business | $ 17,600 |  |
Payments for previous acquisition, to date |  | $ 9,400 |
AptoVision | Earn-out Payable Within First Three Fiscal Years Of Acquisition Date |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |
Potential payments under earn-out arrangements, high estimate | $ 47,000 |  |
Period over which contingent consideration will be paid | 3 years |  |

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