Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross	$ 208,441	$ 208,672
Accumulated Amortization	158,302	151,062
Intangible Assets, Net	50,139	57,610
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross	155,792	154,951
Accumulated Amortization	121,091	116,138
Intangible Assets, Net	34,701	38,813
Trade names
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross	7,809	7,816
Accumulated Amortization	7,046	6,976
Intangible Assets, Net	763	840
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross	43,170	44,229
Accumulated Amortization	28,495	27,057
Intangible Assets, Net	14,675	17,172
Backlog
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross	1,670	1,676
Accumulated Amortization	1,670	891
Intangible Assets, Net	$ 0	$ 785