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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 27, 2020	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Goodwill
Goodwill impairment	$ 33,800	$ 33,841
Goodwill		816,812	$ 820,589	$ 826,715
Intangibles acquired				212,720
Amortization of intangibles		40,039	$ 40,026	$ 52,190
Automotive Sensors
Goodwill
Goodwill impairment	$ 33,800
Goodwill		$ 9,800