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Note 6 - Net Income (Loss) per Share (Details) (Equity Option [Member])
3 Months Ended 6 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Equity Option [Member]
       
Note 6 - Net Income (Loss) per Share (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 784,139 1,275,307 132,146 1,275,307