Annual report pursuant to Section 13 and 15(d)

Note 12 - Defined Contribution Pension Plan and Post-employment Benefit Plan (Details Textual)

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Note 12 - Defined Contribution Pension Plan and Post-employment Benefit Plan (Details Textual) - USD ($)
12 Months Ended
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Defined Benefit Plan, Contributions by Employer $ 162,000 $ 157,000 $ 104,000
MEXICO      
Postemployment Benefits Liability $ 247 $ 268,000