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Note 9 - Income Taxes (Details Narrative) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 28, 2015
Jun. 28, 2015
Jun. 29, 2014
Note 9 - Income Taxes Details Narrative      
Net operating loss carryforward $ 86,200,000 $ 86,200,000  
Net operating loss carryforward - domestic 73,800,000 73,800,000  
Net operating loss carryforward - foreign 12,400,000 12,400,000  
Tax credit carryforwards 1,400,000 1,400,000  
Net operating loss carryforward for which a benefit will be recorded in capital when realized 2,900,000 $ 2,900,000  
Income tax rate   12.30% (4.70%)
Alternative minimum tax provision recorded $ 22,000 $ 22,000