Note 2 - Goodwill and Purchased Intangible Assets (Tables)

3 Months Ended

Mar. 27, 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
Impact of currency exchange		(5,109	)		(460	)		(5,569	)
Balance, March 27, 2021	$	225,615		$	21,120		$	246,735

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

	March 27, 2021						December 26, 2020
					Remaining
					Weighted
	Gross				Average		Gross
	Carrying		Accum.		Amort.		Carrying		Accum.
	Amount		Amort.		Period (years)		Amount		Amort.
Developed technology	$	238,892	$	88,305		5.3	$	239,250	$	83,246
Customer relationships		73,691		23,803		8.2		74,933		22,751
Trade names		23,245		6,662		8.5		23,756		6,279
Covenant not-to-compete		321		137		5.8		340		136
Total intangible assets	$	336,149	$	118,907			$	338,279	$	112,412