Annual report pursuant to Section 13 and 15(d)

Note 9 - Financial Instruments and Risks (Details Textual)

v3.19.1
Note 9 - Financial Instruments and Risks (Details Textual) - USD ($)
12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Jan. 01, 2017
Jan. 03, 2016
Derivative Asset, Current $ 0 $ 37,000 $ 0  
Derivative Liability, Current 0 375,000 1,256,000  
Foreign Currency Transaction Gain (Loss), before Tax, Total 181,000 98,000 268,000  
Provision for Doubtful Accounts 398,000      
Cash and Cash Equivalents, at Carrying Value, Ending Balance 1,601,000 5,536,000 8,503,000 $ 6,099,000
Cost of Sales [Member]        
Unrealized Gain (Loss) on Derivatives 353,000 918,000 831,000  
Gain (Loss) on Sale of Derivatives $ (118,000) 116,000 $ 2,803,000  
PNC Bank [Member] | Base Rate [Member] | Term Loan [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.25%      
PNC Bank [Member] | Revolving Credit Facility [Member]        
Line of Credit Facility, Remaining Borrowing Capacity $ 13,974,000 $ 5,295,000    
Line of Credit Facility, Maximum Borrowing Capacity $ 45,000,000      
PNC Bank [Member] | Revolving Credit Facility [Member] | Term Loan [Member]        
Debt, Weighted Average Interest Rate 5.76%      
PNC Bank [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]        
Debt Instrument, Basis Spread on Variable Rate 0.50%      
PNC Bank [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.00%      
PNC Bank [Member] | Revolving Credit Facility [Member] | One, Two, or Three Month Fully Absorbed PNC LIBOR Rate [Member] | Minimum [Member]        
Debt Instrument, Basis Spread on Variable Rate 1.50%      
PNC Bank [Member] | Revolving Credit Facility [Member] | One, Two, or Three Month Fully Absorbed PNC LIBOR Rate [Member] | Maximum [Member]        
Debt Instrument, Basis Spread on Variable Rate 2.00%      
TCW Asset Management Company, LLC [Member] | Term Loan [Member]        
Debt, Weighted Average Interest Rate 10.98%      
TCW Asset Management Company, LLC [Member] | Base Rate [Member] | Term Loan A [Member]        
Debt Instrument, Basis Spread on Variable Rate 5.00%      
TCW Asset Management Company, LLC [Member] | Base Rate [Member] | Term Loan B [Member]        
Debt Instrument, Basis Spread on Variable Rate 8.50%      
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan A [Member]        
Debt Instrument, Basis Spread on Variable Rate 7.00%      
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan B [Member]        
Debt Instrument, Basis Spread on Variable Rate 10.50%