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Note 11 - Income (Loss) Per Share - Distributed and Undistributed Earnings (Details) - $ / shares
12 Months Ended
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Distributed earnings (in dollars per share) $ 0.22 $ 0.18 $ 0.14
Undistributed earnings (in dollars per share) 0.61 0.92 0.23
(in dollars per share) 0.83 1.10 0.37
Distributed earnings (in dollars per share) 0.22 0.18 0.14
Undistributed earnings (in dollars per share) 0.61 0.92 0.23
(in dollars per share) $ 0.83 $ 1.10 $ 0.37