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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 |  |

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