Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Changes in Carrying Amount of Goodwill by Reporting Units

The changes in the carrying amount of goodwill by reporting units are as follows:

	Semiconductor Test			Systems Test Group			Wireless Test			Total
	(in thousands)
Balance at December 31, 2010:
Goodwill	$	260,540		$	148,183		$	—		$	408,723
Accumulated impairment losses		(260,540	)		(148,183	)		—			(408,723	)
		—			—			—			—
Activity during the year		—			—			352,778			352,778
Balance at December 31, 2011:
Goodwill		260,540			148,183			352,778			761,501
Accumulated impairment losses		(260,540	)		(148,183	)		—			(408,723	)
		—			—			352,778			352,778
Activity during the year		—			—			(3,405	)		(3,405	)
Balance at September 30, 2012:
Goodwill		260,540			148,183			349,373			758,096
Accumulated impairment losses		(260,540	)		(148,183	)		—			(408,723	)
	$	—		$	—		$	349,373		$	349,373

Schedule Of Amortizable Intangible Assets

Amortizable intangible assets consist of the following and are included in intangible assets on the balance sheet:

	September 30, 2012
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Useful Life
	(in thousands)
Developed technology	$	358,155	$	130,349	$	227,806		6.3 years
Customer relationships and service and software maintenance contracts		144,971		58,905		86,066		8.0 years
Trade names and trademarks		33,840		10,024		23,816		9.0 years
Customer backlog		1,000		1,000		—		0.4 years
Total intangible assets	$	537,966	$	200,278	$	337,688		7.0 years

	December 31, 2011
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Useful Life
	(in thousands)
Developed technology	$	358,155	$	91,391	$	266,764		6.3 years
Customer relationships and service and software maintenance contracts		144,971		45,230		99,741		8.0 years
Trade names and trademarks		33,840		7,370		26,470		9.0 years
Customer backlog		1,000		1,000		—		0.4 years
Total intangible assets	$	537,966	$	144,991	$	392,975		7.0 years

Schedule Of Estimated Intangible Asset Amortization Expense

Estimated intangible asset amortization expense for each of the five succeeding fiscal years is as follows:

Year	Amortization Expense
	(in thousands)
2012 (remainder)	$	18,221
2013		72,459
2014		69,374
2015		52,351
2016		52,351