Annual report pursuant to Section 13 and 15(d)

Note 7 - Financial Instruments and Risks (Details Textual)

v3.3.1.900
Note 7 - Financial Instruments and Risks (Details Textual) - USD ($)
12 Months Ended
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Revolving Credit Facility [Member] | PNC Bank [Member] | Prime Rate [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.75%    
Revolving Credit Facility [Member] | PNC Bank [Member]      
Debt, Weighted Average Interest Rate 4.30% 4.60%  
Line of Credit Facility, Interest Rate at Period End 4.00% 4.50%  
Line of Credit Facility, Maximum Borrowing Capacity $ 35,000,000    
PNC Bank [Member]      
Long-term Debt 5,000,000    
Cost of Sales [Member]      
Unrealized Gain (Loss) on Derivatives 616,000 $ (1,822,000) $ (1,107,000)
Gain (Loss) on Sale of Derivatives (4,446,000) (1,082,000) $ 541,000
Derivative Liability, Current 2,087,000 2,703,000  
Derivative Liability, Current $ 2,087,000 $ 2,703,000