Intangibles (Notes)

3 Months Ended

Mar. 28, 2020

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets Disclosure [Text Block]

Intangibles

Intangible assets consist of the following (in thousands):

 

	March 28, 2020						December 28, 2019
	Estimated Weighted Avg Remaining Life	Gross Carrying Amount		Accumulated Amortization			Estimated Weighted Avg Remaining Life	Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Customer lists	9.0	$	722,235	$	(299,564	)	9.2	$	717,397	$	(283,846	)
Backlog	0.9	30,236		(28,724		)	1.3	29,426		(28,283		)
Developed technology	4.7	35,150		(22,507		)	5.2	32,999		(21,378		)
		$	787,621	$	(350,795	)		$	779,822	$	(333,507	)
Indefinite-lived assets:
Trademarks and tradenames		$	997,313					$	997,066

The aggregate intangible amortization expense was $16.9 million and $16.1 million for the three months period ended March 28, 2020 and March 30, 2019, respectively. The estimated future amortization expense of intangible assets is as follows (in thousands):

 

Twelve Month Period coinciding with the end of the company's Fiscal First Quarter	Amortization Expense
2021	$	66,969
2022	62,588
2023	57,618
2024	51,337
2025	37,710
Thereafter	160,604
	$	436,826