Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangible Assets

Intangible assets at December 31, 2012 and 2011 consist of the following:

2012
(In thousands)	Gross  carrying Amount		Accumulated amortization		Net  carrying value		Weighted average life in years
Patents	$	19,104	$	18,226	$	878		9.1
Developed technology		76,414		59,147		17,267		7.5
Trademarks and trade names		12,677		6,633		6,044		12.1
Customer relationships		56,700		33,761		22,939		11.1
Other		1,510		1,431		79		9.4
	$	166,405	$	119,198	$	47,207		9.3

2011
(In thousands)	Gross  carrying amount		Accumulated amortization		Net  carrying value		Weighted average life in years
Patents	$	19,035	$	17,985	$	1,050		9.1
Developed technology		76,639		56,524		20,115		7.5
Trademarks and trade names		12,561		5,579		6,982		12.1
Customer relationships		56,630		28,450		28,180		11.1
Other		1,604		1,478		126		9.0
	$	166,469	$	110,016	$	56,453		9.3

Amortization Expense

The table below sets forth the amortization expense for the years ended December 31, 2012, 2011, and 2010:

(In thousands)	2012		2011		2010
Amortization expense	$	9,594	$	10,225	$	13,231

Estimated Future Amortization Expense

The amortization expense for each of the five succeeding years and thereafter relating to intangible assets currently recorded in the consolidated balance sheets is estimated to be the following at December 31, 2012:

Fiscal year ending December 31	(In millions)
2013	$	9.0
2014		8.0
2015		5.8
2016		5.8
2017		5.8
Thereafter		12.8
	$	47.2