Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and intangible assets

Goodwill and intangible assets consisted of the following:

	Weighted-
	Average
	Amortization
(in thousands, except years)	Period	Gross		Accumulated			Intangible
March 31, 2016:	(in years)	Amount		Amortization			Assets, net
Intangible assets subject to amortization:
Developed technology	8	$	226,548	$	(43,389	)	$	183,159
Manufacturing know-how and trade secrets	12		21,817		(13,707	)		8,110
Trade name and trademarks	9		25,700		(5,653	)		20,047
Customer relationships	9		84,436		(29,663	)		54,773
Total intangible assets subject to amortization	8	$	358,501	$	(92,412	)	$	266,089
Intangible assets not subject to amortization:
Goodwill							$	404,307
Total goodwill and intangible assets, net							$	670,396

	Weighted-
	Average
	Amortization
	Period	Gross		Accumulated			Intangible
December 31, 2015:	(in years)	Amount		Amortization			Assets, net
Intangible assets subject to amortization:
Developed technology	9	$	92,648	$	(37,382	)	$	55,266
Manufacturing know-how and trade secrets	12		21,787		(13,296	)		8,491
Trade name and trademarks	11		9,500		(5,068	)		4,432
Customer relationships	8		44,752		(27,865	)		16,887
Total intangible assets subject to amortization	10	$	168,687	$	(83,611	)	$	85,076
Intangible assets not subject to amortization:
Goodwill							$	154,281
Total goodwill and intangible assets, net							$	239,357

Schedule of changes in the carrying value of goodwill

The following table summarizes the changes in the carrying value of the Company’s goodwill:

	Three Months Ended March 31,
(in thousands)	2016		2015
Goodwill at beginning of period	$	154,281	$	154,443
Increases recorded in business combinations		249,973		—
Changes resulting from foreign currency fluctuations		53		(170	)
Goodwill at end of period	$	404,307	$	154,273

Future amortization expense related to intangible assets

Total future amortization expense related to intangible assets subject to amortization at March 31, 2016 is set forth in the table below:

(in thousands)
Remaining 2016	$	33,232
2017		41,114
2018		39,228
2019		37,749
2020		37,338
2021		35,477
Thereafter through 2027		41,951
Total future amortization expense	$	266,089