Intangible Assets, Net - Cost and Accumulated Amortization (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets
Cost	$ 355,882	$ 347,841
Accumulated Amortization	(112,203)	(97,514)
Total intangibles, net	243,679	250,327
Customer relationships and agreements
Finite-Lived Intangible Assets
Cost	149,598	151,540
Accumulated Amortization	(62,659)	(57,326)
Total intangibles, net	86,939	94,214
Software
Finite-Lived Intangible Assets
Cost	102,961	92,821
Accumulated Amortization	(23,002)	(18,222)
Total intangibles, net	79,959	74,599
Trademarks and trade names
Finite-Lived Intangible Assets
Cost	57,881	58,088
Accumulated Amortization	(8,801)	(7,512)
Total intangibles, net	49,080	50,576
Patents, licenses and rights
Finite-Lived Intangible Assets
Cost	45,442	45,392
Accumulated Amortization	(17,741)	(14,454)
Total intangibles, net	$ 27,701	$ 30,938

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

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