Revenue (Tables)

3 Months Ended

Mar. 29, 2026

Revenue from Contract with Customer [Abstract]

Disaggregated Revenue by Primary Geographical Market, Major Product Line and Timing of Revenue Recognition

The following table provides information about disaggregated revenue by timing of revenue recognition, primary geographical market, and major product lines.

		Semiconductor Test						Robotics		Product Test		Total
		System on-a-Chip		Memory		IST
	(in thousands)
For the Three Months Ended March 29, 2026
Timing of Revenue Recognition
Point in Time		$	808,102	$	193,723	$	18,766	$	88,760	$	61,915	$	1,171,266
Over Time			73,705		8,727		7,778		2,498		18,520		111,228
Total		$	881,807	$	202,450	$	26,544	$	91,258	$	80,435	$	1,282,494
Geographical Market
Asia Pacific		$	815,400	$	195,058	$	24,593	$	16,945	$	24,688	$	1,076,684
Americas			17,045		6,839		1,951		40,523		47,524		113,882
Europe, Middle East and Africa			49,362		553		—		33,790		8,223		91,928
Total		$	881,807	$	202,450	$	26,544	$	91,258	$	80,435	$	1,282,494
For the Three Months Ended March 30, 2025
Timing of Revenue Recognition
Point in Time		$	337,691	$	101,662	$	22,892	$	67,146	$	56,559	$	585,950
Over Time			68,700		7,745		3,814		1,841		17,630		99,730
Total		$	406,391	$	109,407	$	26,706	$	68,987	$	74,189	$	685,680
Geographical Market
Asia Pacific		$	358,103	$	107,681	$	26,016	$	15,062	$	25,546	$	532,408
Americas			35,052		917		690		32,471		40,785		109,915
Europe, Middle East and Africa			13,236		809		—		21,454		7,858		43,357
Total		$	406,391	$	109,407	$	26,706	$	68,987	$	74,189	$	685,680

Deferred Revenue and Customer Advances

Deferred revenue and customer advances consist of the following and are included in short and long-term deferred revenue and customer advances on the balance sheet:

	March 29, 2026		December 31, 2025
	(in thousands)
Maintenance, service and training	$	58,118	$	62,337
Customer advances, undelivered elements and other		130,369		85,762
Extended warranty		67,011		55,913
Total deferred revenue and customer advances	$	255,498	$	204,012