Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Note 6 - Business Combination and Goodwill (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Nov. 12, 2011	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019	Nov. 12, 2021	Nov. 11, 2011
Goodwill, Ending Balance		$ 315,358	$ 267,514			$ 267,500
Goodwill, Impairment Loss		$ 0	$ 0	$ 0
Mirametrix [Member]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Payments to Acquire Businesses, Gross	$ 68,500
Business Combination, Contingent Consideration, Liability, Total	0
Goodwill, Ending Balance	$ 47,800				$ 47,844