Intangible Assets and Goodwill (Tables)

9 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets consist of the following (amounts in thousands):



	December 31, 2017
	Gross Amount		Accumulated Amortization			Net Amount
Core and developed technology	$	1,936,956	$	(587,415	)	$	1,349,541
Customer-related	716,945		(312,851		)	404,094
Trademarks and trade names	11,700		(11,185		)	515
In-process research and development	29,379		—			29,379
Distribution rights	5,578		(5,379		)	199
Other	1,449		(609		)	840
Total	$	2,702,007	$	(917,439	)	$	1,784,568



	March 31, 2017
	Gross Amount		Accumulated Amortization			Net Amount
Core and developed technology	$	1,932,329	$	(419,468	)	$	1,512,861
Customer-related	716,945		(123,616		)	593,329
Trademarks and trade names	11,700		(9,636		)	2,064
In-process research and development	38,511		—			38,511
Distribution rights	5,578		(5,346		)	232
Other	1,449		(354		)	1,095
Total	$	2,706,512	$	(558,420	)	$	2,148,092

Projected amortization expense

The following is an expected amortization schedule for the intangible assets for the remainder of fiscal 2018 through fiscal 2022, absent any future acquisitions or impairment charges (amounts in thousands):



Fiscal Year Ending March 31,	Projected Amortization Expense
2018	$122,252
2019	361,682
2020	313,484
2021	257,430
2022	190,429

Goodwill activity

The following shows the goodwill balance as of December 31, 2017 and March 31, 2017 by segment (amounts in thousands):



	Semiconductor Products Reporting Unit		Technology Licensing Reporting Unit
Goodwill	$	2,279,809	$	19,200