Annual report pursuant to Section 13 and 15(d)

Note 13 - Defined Contribution Pension Plan and Post-employment Benefit Plan (Details Textual)

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Note 13 - Defined Contribution Pension Plan and Post-employment Benefit Plan (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 469 $ 139 $ 125
MEXICO      
Postemployment Benefits Liability, Total $ 458 $ 275