Goodwill - Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 427,499		$ 430,712
Accumulated Amortization	(166,544)		(158,809)
Net	260,955		$ 271,903
Amortization of Intangible Assets	$ 9,955	$ 11,930
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life	11 years		12 years
Gross Carrying Amount	$ 351,092		$ 354,305
Accumulated Amortization	(153,741)		(148,632)
Net	$ 197,351		$ 205,673
Amortizable trade name
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Life	8 years		8 years
Gross Carrying Amount	$ 76,407		$ 76,407
Accumulated Amortization	(12,803)		(10,177)
Net	$ 63,604		$ 66,230

Finite And Indefinite Lived Intangible Assets Gross.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 1
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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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-Topic 230
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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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