Goodwill and Acquired Intangible Assets (Tables)

6 Months Ended

Jun. 28, 2020

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segments for the six months ended June 28, 2020, were as follows:

	Industrial Automation			System Test			Wireless Test			Semiconductor Test			Total
	(in thousands)
Balance at December 31, 2019
Goodwill	$	396,483		$	158,699		$	361,819		$	261,996		$	1,178,997
Accumulated impairment losses		—			(148,183	)		(353,843	)		(260,540	)		(762,566	)
		396,483			10,516			7,976			1,456			416,431
AutoGuide acquisition		(149	)		—			—			—			(149	)
Foreign currency translation adjustment		5,671			—			—			50			5,721
Balance at June 28, 2020
Goodwill		402,005			158,699			361,819			262,046			1,184,569
Accumulated impairment losses		—			(148,183	)		(353,843	)		(260,540	)		(762,566	)
	$	402,005		$	10,516		$	7,976		$	1,506		$	422,003

Schedule of Estimated Intangible Assets Amortization Expense

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

Year	Amortization Expense
	(in thousands)
2020 (remainder)		11,721
2021		20,804
2022		19,911
2023		19,430
2024		19,123
Thereafter		16,574

Wireless Test

Schedule of Amortizable Intangible Assets

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

	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Adjustment			Net Carrying Amount
	(in thousands)
Balance at June 28, 2020
Developed technology	$	361,787	$	(292,394	)	$	(5,095	)	$	64,298
Customer relationships		75,669		(61,730	)		(295	)		13,644
Tradenames and trademarks		70,120		(39,457	)		(1,042	)		29,621
Total intangible assets	$	507,576	$	(393,581	)	$	(6,432	)	$	107,563
Balance at December 31, 2019
Developed technology	$	361,787	$	(279,000	)	$	(5,709	)	$	77,078
Customer relationships		75,669		(59,077	)		(455	)		16,137
Tradenames and trademarks		70,120		(36,671	)		(1,184	)		32,265
Backlog		260		(260	)		—			—
Total intangible assets	$	507,836	$	(375,008	)	$	(7,348	)	$	125,480