Quarterly report pursuant to Section 13 or 15(d)

Note F - Debt (Details Textual)

v3.20.1
Note F - Debt (Details Textual)
$ in Millions
1 Months Ended 6 Months Ended
Nov. 19, 2019
USD ($)
Mar. 31, 2011
Mar. 31, 2011
Mar. 28, 2020
USD ($)
Sep. 28, 2019
USD ($)
Jan. 02, 2019
Oct. 08, 2018
USD ($)
Promissory Note [Member]              
Debt Instrument, Face Amount             $ 7.0
Debt Instrument, Interest Rate, Stated Percentage           6.00%  
Debt Instrument Discounted Value       $ 4.1      
Amended Credit Agreement [Member] | Revolving Credit Facility [Member]              
Line of Credit Facility, Maximum Borrowing Capacity $ 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       $ 135.7      
Line of Credit Facility, Interest Rate During Period       3.20%      
Line of Credit Facility, Remaining Borrowing Capacity       $ 30.5      
Amended Credit Agreement [Member] | Letter of Credit [Member]              
Debt Covenant Fixed Charge Coverage Ratio Term (Month)       1 year      
Fixed Charge Coverage Ratio       1.1      
Retained Earnings Amount Available For Dividends And Stock Repurchases       $ 15.2 $ 16.1    
Debt with Banco Ficohsa [Member] | Revolving Credit Facility [Member]              
Debt Instrument Periodic Payment Term (Month)     180 days        
Debt with Banco Ficohsa [Member] | Revolving Credit Facility [Member] | Minimum [Member]              
Debt Instrument, Term (Month)   1 year          
Debt with Banco Ficohsa [Member] | Revolving Credit Facility [Member] | Maximum [Member]              
Debt Instrument, Term (Month)     1 year 180 days