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Summary of Acquisition Related Finite-lived Intangibles and Estimated Lives (Detail) - USD ($) $ in Thousands | Jan. 02, 2019 | Nov. 01, 2018 | Feb. 14, 2018
--- | --- | --- | ---
3VR |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  |  | $ 6,300
3VR | Trademarks |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  |  | $ 400
Estimated Useful Life (in Years) |  |  | 5 years
3VR | Customer Relationships |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  |  | $ 2,900
Estimated Useful Life (in Years) |  |  | 10 years
3VR | Developed Technology |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  |  | $ 3,000
Estimated Useful Life (in Years) |  |  | 10 years
Thursby Software Systems |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  | $ 2,400 |
Thursby Software Systems | Trademarks |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  | $ 200 |
Estimated Useful Life (in Years) |  | 5 years |
Thursby Software Systems | Customer Relationships |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  | $ 1,500 |
Estimated Useful Life (in Years) |  | 10 years |
Thursby Software Systems | Developed Technology |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets |  | $ 700 |
Estimated Useful Life (in Years) |  | 10 years |
Viscount Systems, Inc. |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets | $ 1,670 |  |
Viscount Systems, Inc. | Trademarks |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets | $ 160 |  |
Estimated Useful Life (in Years) | 5 years |  |
Viscount Systems, Inc. | Customer Relationships |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets | $ 710 |  |
Estimated Useful Life (in Years) | 10 years |  |
Viscount Systems, Inc. | Developed Technology |  |  |
Acquired Finite Lived Intangible Assets [Line Items] |  |  |
Gross Purchased Intangible Assets | $ 800 |  |
Estimated Useful Life (in Years) | 10 years |  |

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