Goodwill and Intangible Assets - Purchased Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		$ 325,465
Accumulated amortization	$ (166,189)	(110,096)
Total future amortization expense	170,346	215,369
Total intangible assets, gross	336,535	343,215
Total intangible assets	170,346	233,119
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,000	1,000
Accumulated amortization	(1,000)	(250)
Total future amortization expense	0	750
Customer relationships and backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	155,942	158,110
Accumulated amortization	(68,119)	(42,478)
Total future amortization expense	$ 87,823	$ 115,632
Estimated Useful Life (Years)	5 years 9 months 18 days	6 years 6 months
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 179,593	$ 166,355
Accumulated amortization	(97,070)	(67,368)
Total future amortization expense	$ 82,523	$ 98,987
Estimated Useful Life (Years)	3 years 6 months	3 years 9 months 18 days
Acquired in-process technology
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired in-process technology		$ 17,750