Goodwill and Intangible Assets, net - Narrative (Details) - USD ($)	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Jun. 28, 2020	Sep. 27, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Other						$ 0
Amortization of intangible assets	$ 8,047,000	$ 8,047,000	$ 8,047,000	$ 16,094,000	$ 24,141,000	$ 34,154,000	$ 33,205,000	$ 35,780,000
Customer relationships | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Useful life of finite-lived intangible assets (in years)						8 years 2 months 12 days	7 years 10 months 24 days
Trade name | Weighted Average
Finite-Lived Intangible Assets [Line Items]
Useful life of finite-lived intangible assets (in years)						5 years 10 months 24 days	6 years