Acquisitions - Narrative (Details) - USD ($)				3 Months Ended			6 Months Ended	9 Months Ended
	Aug. 10, 2017	Apr. 04, 2017	Jul. 22, 2016	Dec. 31, 2017	Jul. 02, 2017	Jan. 01, 2017	Oct. 02, 2016	Dec. 31, 2017	Jan. 01, 2017	Apr. 02, 2017
Business Acquisition [Line Items]
Revenue attributable to Gigpeak				$ 217,075,000		$ 176,358,000		$ 618,186,000	$ 552,545,000
GigPeak, Inc.
Business Acquisition [Line Items]
Total purchase price		$ 250,117,000						$ 250,117,000
Period of purchase price revision from the Acquisition date								12 months
Revenue attributable to Gigpeak				9,500,000				$ 37,700,000
Cash paid at closing		246,717,000
Synkera Technologies, Inc.
Business Acquisition [Line Items]
Total purchase price			$ 2,800,000
Contingent consideration liability			1,300,000
Cash paid at closing			1,500,000
Contingent cash consideration (up to)			$ 1,500,000
Period of cash consideration paid upon achievement of certain milestones			3 years 6 months
Selling, General and Administrative Expenses | GigPeak, Inc.
Business Acquisition [Line Items]
Acquisition related costs					$ 2,200,000
Restricted Stock Units (RSUs)
Business Acquisition [Line Items]
Compensation cost not yet recognized					$ 45,100,000
Compensation cost not yet recognized, period for recognition								1 year 5 months 23 days
Restricted Stock Units (RSUs) | GigPeak, Inc.
Business Acquisition [Line Items]
Fair value of partially vested employee equity awards related to pre-combination services		3,400,000
Compensation cost not yet recognized		$ 3,400,000
Compensation cost not yet recognized, period for recognition		2 years 7 months 6 days
Developed technology rights
Business Acquisition [Line Items]
Total purchase consideration	$ 17,000,000
Payments to acquire assets in asset acquisition	12,900,000
Contingent consideration, liability (spectrabeam)				4,100,000				$ 4,100,000
Finite-lived intangible assets acquired	$ 17,000,000
Acquired finite-lived intangible assets, weighted average useful life	7 years
Developed technology | GigPeak, Inc.
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		5 years
Fair value inputs, discount rate								16.00%
Customer relationships | GigPeak, Inc.
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		5 years
Fair value inputs, discount rate								17.00%
Order backlog | GigPeak, Inc.
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		1 year
Fair value inputs, discount rate								4.60%
Software licenses
Business Acquisition [Line Items]
Finite-lived intangible assets acquired							$ 4,800,000
In-process research and development (IPR&D)
Business Acquisition [Line Items]
Finite-lived intangible assets acquired								$ 1,200,000
In-process research and development (IPR&D) | GigPeak, Inc.
Business Acquisition [Line Items]
Fair value inputs, discount rate								17.00%
Contingent consideration liability				7,500,000				$ 7,500,000
Maximum | Software licenses | GigPeak, Inc.
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		1 year
Senior Notes | Term B Loan
Business Acquisition [Line Items]
Principal amount of debt		$ 200,000,000
Measured on a Recurring Basis | Level 3
Business Acquisition [Line Items]
Contingent consideration liability				$ 1,300,000				$ 1,300,000		$ 1,300,000