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RECENT RESTAURANT EXPANSION AND OTHER DEVELOPMENTS - Narrative (Details)
3 Months Ended 9 Months Ended
Dec. 01, 2020
USD ($)
extensionOption
Jul. 03, 2021
USD ($)
Jul. 03, 2021
USD ($)
Jan. 26, 2021
Oct. 03, 2020
USD ($)
Business Acquisition [Line Items]          
Notes payable   $ 36,958,000 $ 36,958,000   $ 45,242,000
Revenues of acquiree since acquisition   2,141,000 4,582,000    
Cost method investment, ownership percent       5.00%  
Blue Moon Fish Company          
Business Acquisition [Line Items]          
Consideration $ 2,820,000        
Payments to acquire businesses $ 1,820,000        
Debt instrument, term 4 years        
Notes payable $ 1,000,000        
Interest rate, stated percentage 5.00%        
Operating lease, number of renewal terms | extensionOption 4        
Lease renewal term 5 years        
Operating lease, annual lease payments $ 360,000        
Operating lease, extension option, increase in rent, percentage 15.00%        
Income of acquiree since acquisition   $ 432,000 $ 887,000