Goodwill and Acquired Intangible Assets (Tables)

3 Months Ended

Mar. 29, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by reportable segments for the three months ended March 29, 2026, were as follows:

	Robotics			Semiconductor Test			Product Test			Total
	(in thousands)
Balance at December 31, 2025
Goodwill	$	416,401		$	263,598		$	603,586		$	1,283,585
Accumulated impairment losses		—			(260,540	)		(502,026	)		(762,566	)
Total Goodwill		416,401			3,058			101,560			521,019
Foreign currency translation adjustment		(6,834	)		(10	)		—			(6,844	)
Balance at March 29, 2026
Goodwill	$	409,567		$	263,588		$	603,586		$	1,276,741
Accumulated impairment losses		—			(260,540	)		(502,026	)		(762,566	)
Total Goodwill	$	409,567		$	3,048		$	101,560		$	514,175

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 (1)		Accumulated Amortization (1)			Foreign Currency Translation Adjustment			Net Carrying Amount
	(in thousands)
Balance at March 29, 2026
Developed technology	$	225,435	$	(188,330	)	$	60		$	37,165
Customer relationships		49,120		(44,942	)		204			4,382
Tradenames and trademarks		40,487		(31,955	)		(1,100	)		7,432
Total intangible assets	$	315,042	$	(265,227	)	$	(836	)	$	48,979
Balance at December 31, 2025
Developed technology	$	250,025	$	(211,662	)	$	60		$	38,423
Customer relationships		56,480		(51,953	)		204			4,731
Tradenames and trademarks		40,487		(31,339	)		(1,031	)		8,117
Total intangible assets	$	346,992	$	(294,954	)	$	(767	)	$	51,271

(1)In the three months ended March 29, 2026, $32.0 million of amortizable intangible assets became fully amortized and have been eliminated from the gross carrying amount and accumulated amortization.

Schedule of Estimated Intangible Assets Amortization Expense

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

Year	Amortization Expense
	(in thousands)
2026	$	6,005
2027		6,955
2028		6,874
2029		5,536
2030		4,436
Thereafter		19,173