Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Note 5 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Restructuring Charges, Total	$ 18,704
Integration Program [Member]
Restructuring Charges, Total	37,757
Integration Program [Member] \| Employee Severance [Member]
Restructuring Charges, Total	17,791
Integration Program [Member] \| Employee Severance [Member] \| Executive Officers and Board of Directors of Xcerra [Member]
Restructuring Charges, Total	8,200
Integration Program [Member] \| Severance and Other Separation Payments [Member]
Business Combination, Contingent Consideration, Liability, Total	$ 6,900