Intangibles, net and Goodwill

The intangibles, net balance included on the Consolidated Balance Sheet was $67.8 million and $111.5 million at March 30, 2019 and March 31, 2018, respectively.

The following information details the gross carrying amount and accumulated amortization of our intangible assets (in thousands):



	March 30, 2019					March 31, 2018
Intangible Category / Weighted-Average Amortization period (in years)	Gross Amount		Accumulated Amortization			Gross Amount		Accumulated Amortization
Core technology (a)	$	1,390	$	(1,390	)	$	1,390	$	(1,390	)
License agreement (a)	440		(440		)	440		(440		)
Existing technology (6.3)	117,976		(94,136		)	117,976		(75,048		)
In-process research & development (“IPR&D”) (7.3)	97,972		(69,794		)	97,972		(49,556		)
Trademarks and tradename (10.0)	3,037		(2,461		)	3,037		(2,333		)
Customer relationships (10.0)	15,381		(7,270		)	15,381		(5,732		)
Backlog (a)	220		(220		)	220		(220		)
Non-compete agreements (a)	470		(470		)	470		(470		)
Technology licenses (3.0)	28,336		(21,194		)	28,063		(18,213		)
Total	$	265,222	$	(197,375	)	$	264,949	$	(153,402	)


(a)	Intangible assets are fully amortized.

Amortization expense for intangibles in fiscal years 2019, 2018, and 2017 was $47.8 million, $53.7 million, and $37.4 million, respectively. The following table details the estimated aggregate amortization expense for all intangibles owned as of March 30, 2019, for each of the five succeeding fiscal years and in the aggregate thereafter (in thousands):



For the year ended March 28, 2020	$	28,443
For the year ended March 27, 2021	$	17,750
For the year ended March 26, 2022	$	12,755
For the year ended March 25, 2023	$	6,663
For the year ended March 30, 2024	$	1,695
Thereafter	$	541

The goodwill balance included on the Consolidated Balance Sheet is $286.2 million and $288.7 million at March 30, 2019 and March 31, 2018, respectively.