GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table represents changes in the carrying amount of goodwill:

	(in thousands)
Carrying amount of goodwill at December 31, 2016	$	471,228
Acquisitions	1,209
Balance as of September 30, 2017	$	472,437

Schedule of carrying amounts of intangible assets

The carrying amounts of intangible assets as of September 30, 2017 were as follows:

	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
	(in thousands)
Licensed technology	$	39,311	$	(13,356	)	$	25,955
Developed technology	250,043		(107,433		)	142,610
Customer relationships	69,776		(23,020		)	46,756
Trade names	5,600		(2,990		)	2,610
Total finite-lived amortizable intangible assets	364,730		(146,799		)	217,931
In-process research and development	29,500		—			29,500
Total intangible assets	$	394,230	$	(146,799	)	$	247,431

The carrying amounts of intangible assets as of December 31, 2016 were as follows:

	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
	(in thousands)
Licensed technology	$	24,583	$	(6,559	)	$	18,024
Developed technology	250,043		(75,591		)	174,452
Customer relationships	69,776		(17,731		)	52,045
Backlog	11,300		(11,300		)	—
Trade names	5,600		(1,590		)	4,010
Total finite-lived amortizable intangible assets	361,302		(112,771		)	248,531
In-process research and development	29,500		—			29,500
Total intangible assets	$	390,802	$	(112,771	)	$	278,031

Schedule of estimated future amortization expense from amortizable intangible assets

The estimated future amortization expense from amortizable intangible assets is as follows:

	(in thousands)
2017 (remaining three months)	$	15,971
2018	58,446
2019	50,607
2020	38,537
2021	30,680
Thereafter	23,690
Total	$	217,931