Annual report pursuant to Section 13 and 15(d)

Note 8 - Long-term Debt (Details Textual)

v3.20.2
Note 8 - Long-term Debt (Details Textual)
$ in Millions
1 Months Ended 12 Months Ended
Aug. 28, 2020
USD ($)
Apr. 27, 2020
Nov. 19, 2019
USD ($)
Oct. 08, 2018
USD ($)
Mar. 31, 2011
Oct. 03, 2020
USD ($)
Sep. 28, 2019
USD ($)
Rate
Jan. 02, 2019
Promissory Note [Member]                
Debt Instrument, Face Amount       $ 7.0        
Debt Instrument, Interest Rate, Stated Percentage               6.00%
Debt Instrument Discounted Value           $ 2.9    
Amended Credit Agreement [Member] | Revolving Credit Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 170.0   $ 170.0 $ 145.0        
Debt Instrument, Increase (Decrease) in FILO Borrowing Component     (0.25%)          
Debt Instrument, Increase (Decrease) in Fair Market of Eligible Intellectual Property     25.00%          
Debt Instrument, Fixed Coverage Charge Ratio, Exclusion of Capital Expenditures     $ 10.0          
Line Of Credit Facility Maximum Capacity For Capital Leases 25.0              
Line of Credit Facility Including Additional Borrowing Capacity Maximum $ 200.0              
Long-term Line of Credit, Total           $ 106.2    
Line of Credit Facility, Interest Rate During Period           3.30%    
Line of Credit Facility, Remaining Borrowing Capacity           $ 47.1    
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.00%              
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.00%              
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]                
Line of Credit Facility, Periodic Payment $ 0.2              
Line of Credit Facility, Commitment Fee Percentage 0.25%              
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]                
Line of Credit Facility, Periodic Payment $ 0.3              
Line of Credit Facility, Commitment Fee Percentage 0.375%              
Amended Credit Agreement [Member] | Letter of Credit [Member]                
Debt Covenant Fixed Charge Coverage Ratio Term (Month)   12 months         12 months  
Fixed Charge Coverage Ratio   1.1            
Debt Instrument, Covenant, Additional Aged Receivable Period (Day) 30 days              
Debt Instrument, Covenant, Advance Rate of Real Estate Assets 70.00%              
Debt Instrument, Covenant, Additional Applicable Margin 0.50%              
Fixed Charge Coverage Ratio (Rate) | Rate             110.00%  
Debt Instrument, Covenant, Percentage of Borrowing Rate or Commitment, Availability for Stock Repurchase or Dividends       15.00%        
Debt Instrument, Covenant, Number of Preceding Days for Average Availability of Percentage for Stock Repurchases and Dividends       30        
Debt Instrument, Covenant, Maximum Amount Plus 50% of Cumulative Net Income For Dividends and Stock Repurchases       $ 10.0        
Retained Earnings Amount Available For Dividends And Stock Repurchases           $ 8.8 $ 16.1  
Amended Credit Agreement [Member] | Letter of Credit [Member] | Minimum [Member]                
LIBOR Floor Rate 1.00% 1.00%            
Debt with Banco Ficohsa [Member] | Revolving Credit Facility [Member]                
Debt Instrument, Term (Month)         18 months      
Debt Instrument Periodic Payment Term (Month)         6 months