Summary of Acquisition Related Finite-lived Intangibles and Estimated Lives (Detail) - Viscount Systems, Inc. $ in Thousands	Jan. 02, 2019 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Gross Purchased Intangible Assets	$ 1,670
Trademarks
Acquired Finite Lived Intangible Assets [Line Items]
Gross Purchased Intangible Assets	$ 160
Estimated Useful Life (in Years)	5 years
Customer Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Gross Purchased Intangible Assets	$ 710
Estimated Useful Life (in Years)	10 years
Developed Technology
Acquired Finite Lived Intangible Assets [Line Items]
Gross Purchased Intangible Assets	$ 800
Estimated Useful Life (in Years)	10 years