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Goodwill and Acquired Intangible Assets (Tables)

9 Months Ended

Sep. 27, 2020

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segments for the nine months ended September 27, 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			18,881				—				—				89				18,970
Balance at September 27, 2020
Goodwill			415,215				158,699				361,819				262,085				1,197,818
Accumulated impairment losses			—				(148,183	)			(353,843	)			(260,540	)			(762,566	)
		$	415,215			$	10,516			$	7,976			$	1,545			$	435,252

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)			5,721
2021			21,254
2022			20,361
2023			19,874
2024			19,565
Thereafter			16,897

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 September 27, 2020
Developed technology		$	361,787			$	(295,801	)		$	(3,806	)		$	62,180
Customer relationships			75,669				(63,107	)			(42	)			12,520
Tradenames and trademarks			70,120				(40,891	)			(257	)			28,972
Total intangible assets		$	507,576			$	(399,799	)		$	(4,105	)		$	103,672
Balance, 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

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