Note 2 - Business Acquisitions (Tables) - Xcerra [Member]

12 Months Ended

Dec. 28, 2019

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

	Fair Value at			Measurement			Adjusted
	Acquisition Date			Period Adjustments*			Fair Value
Current assets, including cash received	$	375,990					$	375,990
Property, plant and equipment		40,729						40,729
Other assets		2,109			(1,058	)		1,051
Intangible assets		321,160						321,160
Goodwill		179,263			1,134			180,397
Total assets acquired		919,251						919,327
Liabilities assumed		(124,821	)		(76	)		(124,897	)
Net assets acquired	$	794,430					$	794,430

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

	Estimated Fair Value		Weighted Average Useful Life (years)
Developed technology	$	194,600		7.8
Customer relationships		65,890		10.6
In-process research and development		36,360		indefinite
Product backlog		6,410		0.8
Trademarks and trade names		16,800		11.0
Favorable leases		1,100		5.5
Total intangible assets	$	321,160