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RECENT RESTAURANT EXPANSION AND OTHER DEVELOPMENTS - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Oct. 02, 2021 | Oct. 03, 2020
Business Acquisition [Line Items] |  |
Shares - Basic (in shares) | 3,516 | 3,500
Shares - Diluted (in shares) | 3,604 | 3,500
Blue Moon Fish Company |  |
Business Acquisition [Line Items] |  |
Total revenues | $ 132,547 | $ 110,700
Net income (loss) | $ 12,926 | $ (4,303)
Net income (loss) per share - basic (in dollars per share) | $ 3.68 | $ (1.23)
Net income (loss) per share - diluted (in dollars per share) | $ 3.59 | $ (1.23)
Shares - Basic (in shares) | 3,516 | 3,500
Shares - Diluted (in shares) | 3,604 | 3,500

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