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Quarterly Information - Unaudited - Net Income (Loss) To Adjusted EBITDA (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 29, 2018	Mar. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 29, 2017
Quarterly Financial Information [Line Items]
Gain associated with claim on long-term contract	$ 132,004	$ (2,330)	$ 0	$ (129,674)	$ 0
Revenue
Quarterly Financial Information [Line Items]
Gain associated with claim on long-term contract	55,100			(55,100)
Other Income
Quarterly Financial Information [Line Items]
Gain associated with claim on long-term contract	$ 74,600			$ (74,600)

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Quarterly financial information.

+ References

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

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