Goodwill and Intangible Assets, net - Intangible Assets, net (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 417,400	$ 417,400
Accumulated Amortization	(196,666)	(159,190)
Total	220,734	258,210
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	390,900	390,900
Accumulated Amortization	(184,427)	(149,163)
Total	206,473	241,737
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	24,800	24,800
Accumulated Amortization	(10,539)	(8,327)
Total	$ 14,261	$ 16,473