Quarterly report pursuant to Section 13 or 15(d)

Note F - Debt (Details Textual)

v3.19.3.a.u2
Note F - Debt (Details Textual) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Nov. 19, 2019
Mar. 31, 2011
Dec. 28, 2019
Apr. 15, 2020
Jan. 02, 2019
Oct. 08, 2018
Mar. 09, 2018
Promissory Note [Member]              
Debt Instrument, Face Amount           $ 7.0  
Debt Instrument, Interest Rate, Stated Percentage         6.00%    
Debt Instrument Discounted Value     $ 4.7        
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     $ 115.0        
Line of Credit Facility, Interest Rate During Period     3.90%        
Line of Credit Facility, Remaining Borrowing Capacity     $ 38.3        
Amended Credit Agreement [Member] | Letter of Credit [Member]              
Debt Covenant Fixed Charge Coverage Ratio Term     1 year        
Fixed Charge Coverage Ratio     110.00%        
Retained Earnings Amount Available For Dividends And Stock Repurchases     $ 16.6 $ 16.1      
Debt with Banco Ficohsa [Member] | Revolving Credit Facility [Member]              
Debt Instrument, Term   1 year 180 days          
Debt Instrument Periodic Payment Term   180 days