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Note 4 - Property and Equipment, Net (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Depreciation   $ 15,200 $ 15,800 $ 17,600
Asset Impairment Charges   2,674 296 1,107
Cost of Sales [Member]        
Asset Impairment Charges $ 2,300      
Selling, General and Administrative Expenses [Member] | Property And Equipment [Member]        
Impairment of Long-Lived Assets to be Disposed of   $ 400 $ 300 $ 400