Other Operating Income, Net - Components of Other Income, Net (Details) - USD ($) $ in Thousands	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
Other Income and Expenses [Abstract]
Net earnings (loss) of equity method investments						$ 6,082	$ 2,454	$ (180)
Gain on sale of fixed assets and other						1,190	7,331	5,160
Other income (loss), net	$ 2,384	$ 1,168	$ 785	$ 1,954	$ 4,338	$ 7,272	$ 9,785	$ 4,980

The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration