Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segments for the years ended December 31, 2021 and 2020 are as follows:

	Industrial Automation			Wireless Test			Semiconductor Test			System Test			Total
	(in thousands)
Balance at December 31, 2019:
Goodwill	$	396,483		$	361,819		$	261,996		$	158,699		$	1,178,997
Accumulated impairment losses		—			(353,843	)		(260,540	)		(148,183	)		(762,566	)
		396,483			7,976			1,456			10,516			416,431
AutoGuide acquisition		(149	)		—			—			—			(149	)
Foreign currency translation adjustment		37,418			—			159			—			37,577
Balance at December 31, 2020:
Goodwill		433,752			361,819			262,155			158,699			1,216,425
Accumulated impairment losses		—			(353,843	)		(260,540	)		(148,183	)		(762,566	)
		433,752			7,976			1,615			10,516			453,859
Foreign currency translation adjustment		(27,781	)		—			(54	)		—			(27,835	)
Balance at December 31, 2021:
Goodwill		405,971			361,819			262,101			158,699			1,188,590
Accumulated impairment losses		—			(353,843	)		(260,540	)		(148,183	)		(762,566	)
	$	405,971		$	7,976		$	1,561		$	10,516		$	426,024

Schedule of Estimated Intangible Assets Amortization Expense

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

Year	Amortization Expense
	(in thousands)
2022	$	20,081
2023		19,592
2024		19,283
2025		11,546
2026		2,423
Thereafter		2,710

Wireless Test

Schedule of Amortizable Intangible Assets

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

	December 31, 2021
	Gross Carrying Amount (1)		Accumulated Amortization (1)			Foreign Currency Translation Adjustment			Net Carrying Amount
	(in thousands)
Developed technology	$	272,547	$	(223,413	)	$	(4,093	)	$	45,041
Customer relationships		57,739		(48,921	)		209			9,027
Tradenames and trademarks		59,387		(37,237	)		(583	)		21,567
Total intangible assets	$	389,673	$	(309,571	)	$	(4,467	)	$	75,635

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Adjustment			Net Carrying Amount
	(in thousands)
Developed technology	$	272,547	$	(210,479	)	$	(1,610	)	$	60,458
Customer relationships		66,239		(54,524	)		305			12,020
Tradenames and trademarks		70,120		(42,344	)		685			28,461
Total intangible assets	$	408,906	$	(307,347	)	$	(620	)	$	100,939

(1) In 2021, $19.2 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.