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Note 9 - Income Taxes - Effective Consolidated Tax Rate (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jun. 26, 2016
Jul. 02, 2017
Jun. 26, 2016
Income Before Income Taxes     $ 3,021 $ 844
Income tax provision $ 179 $ 33 $ 266 $ 121
Effective Income Tax Rate     8.80% 14.30%