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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 28, 2025 USD ($) state restaurant | Sep. 28, 2025 USD ($) segment restaurant state | Dec. 29, 2024 USD ($)
Change in Accounting Estimate [Line Items] |  |  |
Number of restaurants | restaurant | 266 | 266 |
Number of states | state | 23 | 23 |
Number of restaurants opened | restaurant | 6 | 20 |
Operating segments | segment |  | 1 |
Reportable segments | segment |  | 1 |
Accounts receivable | $ 6,805 | $ 6,805 | $ 5,034
Restricted cash associated with letters of credit | 4,100 | 4,100 |
Credit Card Processors |  |  |
Change in Accounting Estimate [Line Items] |  |  |
Accounts receivable | $ 5,000 | $ 5,000 | $ 2,300

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
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