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Note H - Sale of Property and Equipment (Details Textual) - USD ($)
3 Months Ended
Oct. 23, 2018
Aug. 09, 2018
Dec. 23, 2018
Regional Office Building in Fort Lauderdale, Florida [Member]      
Sale of Real Estate, Selling Costs   $ 17,000  
Proceeds from Sale of Real Estate, Total   $ 1,330,000  
Other Income [Member] | Regional Office Building in Fort Lauderdale, Florida [Member]      
Gains (Losses) on Sales of Other Real Estate     $ 306,000
Company Owned Restaurant in Bay Ridge [Member]      
Proceeds from Divestiture of Businesses $ 11,445,000    
Sale of Real Estate, Selling Costs $ 33,000    
Company Owned Restaurant in Bay Ridge [Member] | Other Income [Member]      
Gain (Loss) on Disposition of Business     $ 10,821,000