Note 2 - Goodwill and Purchased Intangible Assets (Tables)

6 Months Ended

Jun. 26, 2021

Notes Tables

Schedule of Goodwill [Table Text Block]

	Semiconductor Test
	& Inspection			PCB Test			Total
Balance, December 28, 2019	$	218,775		$	19,894		$	238,669
Impact of currency exchange		11,949			1,686			13,635
Balance, December 26, 2020		230,724			21,580			252,304
Sale of PCB Test business (1)		-			(21,899	)		(21,899	)
Impact of currency exchange		(4,147	)		319			(3,828	)
Balance, June 26, 2021	$	226,577		$	-		$	226,577

Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block]

	June 26, 2021					December 26, 2020
					Remaining
					Weighted
	Gross				Average	Gross
	Carrying		Accum.		Amort.	Carrying		Accum.
	Amount		Amort.		Period (in years)	Amount		Amort.
Developed technology	$	239,375	$	95,745	5.1	$	239,250	$	83,246
Customer relationships		67,144		23,837	7.9		74,933		22,751
Trade names		21,251		6,846	7.8		23,756		6,279
Covenant not-to-compete		318		143	5.5		340		136
Total intangible assets	$	328,088	$	126,571		$	338,279	$	112,412