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Note 1 - Summary of Significant Accounting Policies (Details) - Changes in Carrying Amounts of Goodwill - USD ($)
12 Months Ended
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Changes in Carrying Amounts of Goodwill [Abstract]      
$ 70,509,000    
0    
0 $ 0 $ 0
(6,619,000)    
$ 63,890,000 $ 70,509,000