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Note F - Goodwill and Intangible Assets (Details Textual)
12 Months Ended
Sep. 26, 2020
USD ($)
Sep. 28, 2019
USD ($)
Sep. 29, 2018
USD ($)
Number of Reportable Segments 3    
Impairment of Intangible Assets (Excluding Goodwill), Total $ 0 $ 0 $ 0
Intangible Assets Acquired     0
Amortization of Intangible Assets, Total 3,202,000 3,320,000 3,510,000
Finite-Lived Intangible Asset, Expected Amortization, Year One 2,500,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Two 2,300,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Four 2,000,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 1,400,000    
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) 10 years 8 months 12 days    
Goodwill, Impairment Loss $ 0 0 0
Goodwill, Acquired During Period   0 $ 0
Finite-Lived Intangible Asset, Expected Amortization, Year Three 2,300,000    
Frozen Beverages [Member]      
Intangible Assets Acquired   $ 480,000  
ICEE Distributor [Member] | Frozen Beverages [Member]      
Intangible Assets Acquired 22,969,000    
Goodwill, Acquired During Period 15,773,000    
BAMA ICEE [Member] | Frozen Beverages [Member]      
Intangible Assets Acquired 6,933,000    
Goodwill, Acquired During Period $ 3,549,000    
Minimum [Member]      
Finite-Lived Intangible Asset, Useful Life (Year) 2 years    
Maximum [Member]      
Finite-Lived Intangible Asset, Useful Life (Year) 20 years