Goodwill and Intangible Assets (Tables)

9 Months Ended

Oct. 04, 2015

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segments for the nine months ended October 4, 2015, were as follows:

	Wireless Test			Industrial Automation			System Test			Semiconductor Test			Total
	(in thousands)
Balance at December 31, 2014:
Goodwill	$	361,819		$	—		$	158,699		$	260,540		$	781,058
Accumulated impairment losses		(98,897	)		—			(148,183	)		(260,540	)		(507,620	)
		262,922			—			10,516			—			273,438
Universal Robots acquisition		—			226,501			—			—			226,501
Universal Robots adjustment		—			520			—			—			520
Foreign currency translation adjustment		—			(2,113	)		—			—			(2,113	)
Balance at October 4, 2015:
Goodwill		361,819			224,908			158,699			260,540			1,005,966
Accumulated impairment losses		(98,897	)		—			(148,183	)		(260,540	)		(507,620	)
	$	262,922		$	224,908		$	10,516		$	—		$	498,346

Schedule of Amortizable Intangible Assets

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

	October 4, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Useful Life
	(in thousands)
Developed technology	$	381,071	$	206,256	$	174,815		6.0 years
Customer relationships		110,464		59,395		51,069		7.9 years
Tradenames and trademarks		51,588		17,418		34,170		9.5 years
Non-compete agreement		320		80		240		4.0 years
Customer order backlog		170		170		—		0.3 years
Total intangible assets	$	543,613	$	283,319	$	260,294		6.7 years

	December 31, 2014
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Useful Life
	(in thousands)
Developed technology	$	345,513	$	224,059	$	121,454		6.2 years
Customer relationships		146,635		93,998		52,637		7.7 years
Tradenames and trademarks		30,414		14,205		16,209		9.0 years
Non-compete agreement		320		20		300		4.0 years
Customer order backlog		170		170		—		0.3 years
Total intangible assets	$	523,052	$	332,452	$	190,600		6.8 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)
2015 (remainder)	$	20,029
2016		80,117
2017		71,498
2018		44,647
2019		23,785
Thereafter		20,218