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Note Q - Subsequent Events (Details Textual) - Letter of Credit [Member] - Amended Credit Agreement [Member]
Apr. 27, 2020
Mar. 28, 2020
Fixed Charge Coverage Ratio   1.1
Subsequent Event [Member]    
Debt Instrument, Basis Spread on Variable Rate 1.00%  
Minimum [Member] | Subsequent Event [Member]    
Fixed Charge Coverage Ratio 1.1