Goodwill and Intangible Assets, net - Intangible Assets, net (Details) - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 305,500	$ 305,500
Accumulated Amortization	(149,177)	(125,036)
Total	156,323	180,464
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	286,900	286,900
Accumulated Amortization	(139,699)	(116,923)
Total	147,201	169,977
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,700	1,700
Accumulated Amortization	(1,700)	(1,700)
Total	0	0
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,900	16,900
Accumulated Amortization	(7,778)	(6,413)
Total	$ 9,122	$ 10,487