Annual report pursuant to Section 13 and 15(d)

Note 8 - Financial Instruments and Risks (Details Textual)

v3.20.1
Note 8 - Financial Instruments and Risks (Details Textual)
$ in Thousands
9 Months Ended 12 Months Ended
Aug. 08, 2019
USD ($)
Jul. 03, 2019
USD ($)
Sep. 29, 2019
Dec. 29, 2019
USD ($)
Dec. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jan. 01, 2017
USD ($)
Derivative Asset, Current       $ 0 $ 15    
Derivative Liability, Current       0 0    
Foreign Currency Transaction Gain (Loss), before Tax, Total       (394) (181) $ 98  
Accounts Receivable, Credit Loss Expense (Reversal)       2,125      
Cash and Cash Equivalents, at Carrying Value, Ending Balance       1,368 1,601 5,536 $ 8,503
Term Loan B [Member]              
Repayments of Long-term Debt, Total   $ 12,000          
Cost of Sales [Member]              
Unrealized Gain (Loss) on Derivatives       0 353 918  
Gain (Loss) on Sale of Derivatives       $ (89) (118) $ (116)  
Foreign Exchange Forward [Member]              
Derivative, Number of Instruments Held, Total       0      
PNC Bank [Member] | Revolving Credit Facility [Member]              
Line of Credit Facility, Remaining Borrowing Capacity       $ 21,644 $ 13,974    
PNC Bank [Member] | Base Rate [Member] | Minimum [Member] | Revolving Credit Facility [Member]              
Debt Instrument, Basis Spread on Variable Rate       0.75%      
PNC Bank [Member] | Base Rate [Member] | Maximum [Member] | Revolving Credit Facility [Member]              
Debt Instrument, Basis Spread on Variable Rate       1.25%      
PNC Bank [Member] | Term Loan [Member] | Base Rate [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate       0.75%      
PNC Bank [Member] | Term Loan [Member] | Base Rate [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate       1.25%      
PNC Bank [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate       2.50%      
PNC Bank [Member] | Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate       3.00%      
TCW Asset Management Company, LLC [Member] | Financing Agreement Through June 30, 2020 [Member] | London Interbank Offered Rate (LIBOR) [Member]              
Debt Instrument, Basis Spread on Variable Rate 8.75%     8.75%      
TCW Asset Management Company, LLC [Member] | Financing Agreement Through June 30, 2020 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate 7.25%            
TCW Asset Management Company, LLC [Member] | Financing Agreement Through June 30, 2020 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate 8.75%            
TCW Asset Management Company, LLC [Member] | Term Loan A [Member]              
Repayments of Debt $ 10,000 $ 12,022          
TCW Asset Management Company, LLC [Member] | Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member]              
Debt Instrument, Basis Spread on Variable Rate     8.75%        
TCW Asset Management Company, LLC [Member] | Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate       7.25%      
TCW Asset Management Company, LLC [Member] | Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate       8.75%