Annual report pursuant to Section 13 and 15(d)

Note 6 - Debt and Capital Leases (Details Textual)

v3.19.1
Note 6 - Debt and Capital Leases (Details Textual) - USD ($)
12 Months Ended
Dec. 30, 2018
Nov. 08, 2018
Dec. 31, 2017
Jan. 01, 2017
Amortization of Financing Costs, Write Down $ 104,000  
PNC Bank [Member] | Term Loan [Member]        
Long-term Line of Credit, Total $ 0   8,000,000  
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      
Long-term Line of Credit, Total     12,191,000  
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]        
Debt Issuance Cost, Gross, Noncurrent $ 2,749,000      
Debt Instrument, Unamortized Discount, Total $ 1,843,000 $ 1,898,000    
Class of Warrant or Right, Outstanding 504,735 504,735    
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.01    
Share Price $ 3.98      
Warrants and Rights Outstanding $ 2,009      
TCW Asset Management Company, LLC [Member] | Term Loan A [Member]        
Additional Prepayment Fee After Closing Date, Percent, First Twelve Months 3.00%      
Additional Prepayment Fee After Closing Date, Percent, Year Two 2.00%      
Additional Prepayment Fee After Closing Date, Percent, Year Three 1.00%      
Additional Prepayment Fee After Closing Date, Percent, After Year Three 0.00%      
Long-term Line of Credit, Total $ 50,000,000   0  
TCW Asset Management Company, LLC [Member] | Term Loan B [Member]        
Long-term Line of Credit, Total $ 12,000,000   $ 0  
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%