Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Derivative Financial Instruments - Average USD Fair Value Measurements for Contracts Rates (Details)

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Note 11 - Derivative Financial Instruments - Average USD Fair Value Measurements for Contracts Rates (Details)
Jun. 30, 2019
Dec. 30, 2018
USD:CAD Forward Foreign Exchange Contract [Member]    
Average USD:CAD contract rate
Average USD:CAD mark-to-market rate
USD:PESO Forward Foreign Exchange Contract [Member]    
Average USD:CAD contract rate 20.43%
Average USD:CAD mark-to-market rate 19.66%