Intangible Assets and Goodwill (Tables)

6 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

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



	September 30, 2017
	Gross Amount		Accumulated Amortization			Net Amount
Core and developed technology	$	1,939,833	$	(532,821	)	$	1,407,012
Customer-related	716,945		(249,773		)	467,172
Trademarks and trade names	11,700		(10,668		)	1,032
In-process research and development	29,379		—			29,379
Distribution rights	5,578		(5,368		)	210
Other	1,449		(524		)	925
Total	$	2,704,884	$	(799,154	)	$	1,905,730



	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	$244,942
2019	361,769
2020	313,684
2021	257,444
2022	190,439

Goodwill activity

The following shows the goodwill balance as of September 30, 2017 and March 31, 2017 by segment (amounts in thousands):



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