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Note 3 - Distributed and Undistributed Earnings (Details) - $ / shares
3 Months Ended
Apr. 03, 2016
Apr. 05, 2015
Basic Earnings Per Share:    
Distributed Earnings (in dollars per share) $ 0.05 $ 0.04
Undistributed Earnings (in dollars per share) 0.15 0.15
Total (in dollars per share) 0.20 0.19
Diluted Earnings Per Share:    
Distributed Earnings (in dollars per share) 0.05 0.04
Undistributed Earnings (in dollars per share) 0.15 0.15
Total (in dollars per share) 0.20 0.19
Basic earnings per share (in dollars per share) 0.20 0.19
Diluted earnings per share (in dollars per share) $ 0.20 $ 0.19