Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Debt (Details Textual)

v3.19.3
Note 5 - Debt (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 40 Months Ended
Sep. 27, 2019
Aug. 08, 2019
Sep. 29, 2019
Nov. 08, 2023
Dec. 30, 2018
Nov. 08, 2018
Debt Instrument, Breach of Covenant, Reduction of Earnings Before Interest, Income Taxes and Depreciation Within Quarterly Within Next Six Months     5.00%      
PNC Bank [Member] | Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 65,000 $ 65,000      
Debt Instrument, Covenant, Maximum Restructuring Costs $ 2,300          
Debt Instrument, Covenant, Maximum Write-offs of Accounts Receivable 1,623          
Debt Instrument, Covenant, Maximum Write-offs of Inventory 1,607          
Debt Instrument, Covenant, Maximum Investments Under Restructuring 2,300          
Long-term Line of Credit, Total     34,840   $ 25,020  
Line of Credit Facility, Remaining Borrowing Capacity     $ 21,356   13,974  
PNC Bank [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate     0.75%      
PNC Bank [Member] | Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate     1.25%      
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     2.50%      
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     3.00%      
PNC Bank [Member] | Foreign Line of Credit [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   15,000        
Line of Credit Facility, Maximum Borrowing Capacity, Increased   $ 20,000        
PNC Bank [Member] | Foreign Line of Credit [Member] | Base Rate [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate   0.75%        
PNC Bank [Member] | Foreign Line of Credit [Member] | Base Rate [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate   1.25%        
PNC Bank [Member] | Foreign Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate   2.50%        
PNC Bank [Member] | Foreign Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate   3.00%        
TCW Asset Management Company, LLC [Member]            
Debt Issuance Cost, Gross, Noncurrent     $ 2,413   2,749  
Debt Instrument, Unamortized Discount, Total     $ 1,559   $ 1,843  
Class of Warrant or Right, Outstanding         504,735 504,735
Class of Warrant or Right, Exercise Price of Warrants or Rights     $ 2.13     $ 0.01
Warrants and Rights Outstanding     $ 1,090     $ 1,898
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     511,949      
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%      
Maximum Paydown of Debt Instrument, Permit   $ 10,000        
Long-term Line of Credit, Total     $ 39,376   $ 50,000  
TCW Asset Management Company, LLC [Member] | Financing Agreement Through June 30, 2020 [Member]            
Debt Instrument, Covenant, Maximum Restructuring Costs 2,300          
Debt Instrument, Covenant, Maximum Write-offs of Accounts Receivable 1,623          
Debt Instrument, Covenant, Maximum Write-offs of Inventory 1,607          
Debt Instrument, Covenant, Maximum Investments Under Restructuring $ 2,300          
TCW Asset Management Company, LLC [Member] | Term Loan B [Member]            
Long-term Line of Credit, Total         $ 12,000  
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Term Loan A [Member]            
Debt Instrument, Basis Spread on Variable Rate     8.75%      
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Financing Agreement Through June 30, 2020 [Member]            
Debt Instrument, Basis Spread on Variable Rate   8.75%        
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Term Loan A [Member] | Forecast [Member]            
Debt Instrument, Basis Spread on Variable Rate       7.25%    
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Financing Agreement Through June 30, 2020 [Member]            
Debt Instrument, Basis Spread on Variable Rate   7.25%        
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Term Loan A [Member] | Forecast [Member]            
Debt Instrument, Basis Spread on Variable Rate       8.75%    
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Financing Agreement Through June 30, 2020 [Member]            
Debt Instrument, Basis Spread on Variable Rate   8.75%