Goodwill and Other Intangible Assets

3 Months Ended

Mar. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The amounts for goodwill and changes in the carrying value by segment for the three months ended March 30, 2019 are as follows:



(in thousands)	Electronics			Automotive		Industrial		Total
As of December 29, 2018	$	656,039		$	132,332	$	38,344	$	826,715
Currency translation	(1,400		)	102		50		(1,248		)
As of March 30, 2019	$	654,639		$	132,434	$	38,394	$	825,467

The components of other intangible assets at March 30, 2019 are as follows:



(in thousands, except weighted average useful life)	Weighted Average Useful Life (Years)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Patents, licenses and software	11.1	$	138,951	$	72,219	$	66,732
Distribution network	12.3	43,797		35,049		8,748
Customer relationships, trademarks, and tradenames	17.2	374,204		99,263		274,941
Total		$	556,952	$	206,531	$	350,421

During the three months ended March 30, 2019 and March 31, 2018, the Company recorded amortization expense of $10.2 million and $12.0 million, respectively, for intangible assets with definite lives.

Estimated annual amortization expense related to intangible assets with definite lives as of March 30, 2019 is as follows:



(in thousands)	Amount
2019	$	49,524
2020	38,776
2021	36,930
2022	35,884
2023	30,423
2024 and thereafter	169,075
Total	$	360,612