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Note F - Goodwill and Intangible Assets (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Sep. 24, 2022
Sep. 25, 2021
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)   $ 1,678 $ 1,010 $ 1,273
Amortization of Intangible Assets   6,500 3,500 2,600
Finite-Lived Intangible Asset, Expected Amortization, Year One $ 6,200 6,200    
Finite-Lived Intangible Asset, Expected Amortization, Year Two 5,600 5,600    
Finite-Lived Intangible Asset, Expected Amortization, Year Three 4,600 4,600    
Finite-Lived Intangible Asset, Expected Amortization, Year Four 4,200 $ 4,200    
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life   10 years 4 months 24 days    
Goodwill, Impairment Loss   $ 0 0 0
Goodwill, Acquired During Period       $ 0
Technology-Based Intangible Assets [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life   10 years    
Customer Relationships [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life   10 years    
License and Rights [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life   20 years    
Franchise Rights [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life   10 years    
Dippin’ Dots Holding, L.L.C. [Member]        
Intangible Assets Acquired   $ 118,200    
Goodwill, Acquired During Period   $ 700 $ 62,600  
Dippin’ Dots Holding, L.L.C. [Member] | Customer Relationships [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life     10 years  
Dippin’ Dots Holding, L.L.C. [Member] | Franchise Rights [Member]        
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life     10 years  
Trade Names [Member]        
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) 1,700      
Trade Names [Member] | Food Service [Member]        
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) $ 1,700      
Minimum [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 2 years 2 years    
Maximum [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 20 years 20 years