Goodwill and Intangible Assets (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and intangible assets consisted of the following (in thousands, except years):



	Weighted- Average Amortization Period (in years)	Gross Amount		Accumulated Amortization			Intangible Assets, net
March 31, 2014:
Intangible Assets Subject to Amortization:
Purchased technology:
Developed technology	10	$	62,328	$	(23,142	)	$	39,186
Manufacturing know-how and trade secrets	12	21,997		(10,352		)	11,645
Trade name and trademarks	11	9,500		(3,564		)	5,936
Customer relationships	8	43,871		(21,685		)	22,186
Total intangible assets subject to amortization	10	$	137,696	$	(58,743	)	$	78,953

Intangible Assets Not Subject to Amortization:
In-process research and development							10,640
Goodwill							154,650
Total goodwill and intangible assets, net							$	244,243



	Weighted- Average Amortization Period (in years)	Gross Amount		Accumulated Amortization			Intangible Assets, net
December 31, 2013:
Intangible Assets Subject to Amortization:
Purchased technology:
Developed technology	10	$	62,328	$	(21,359	)	$	40,969
Manufacturing know-how and trade secrets	12	21,997		(9,890		)	12,107
Trade name and trademarks	11	9,500		(3,317		)	6,183
Customer relationships	8	43,871		(19,784		)	24,087
Total intangible assets subject to amortization	10	$	137,696	$	(54,350	)	$	83,346

Intangible Assets Not Subject to Amortization:
In-process research and development							10,640
Goodwill							154,944
Total goodwill and intangible assets, net							$	248,930

Future amortization expense related to intangible assets

Total future amortization expense related to intangible assets subject to amortization at March 31, 2014 is set forth in the table below (in thousands):



Remaining 2014	$	10,292
2015	13,182
2016	12,705
2017	10,352
2018	9,834
2019	8,480
Thereafter through 2026	14,108
Total future amortization expense	$	78,953