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INCOME TAXES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 25, 2022 | Dec. 26, 2021
Operating Loss Carryforwards [Line Items] |  |  |
Income tax expense | $ 379,000 | $ 1,345,000 | $ 147,000
Net deferred tax asset | 184,900,000 | 163,800,000 |
Valuation allowance | 184,880,000 | 163,750,000 |
Increase in valuation allowance | 21,100,000 |  |
Unrecognized tax benefits | 431,000 | 1,556,000 | $ 1,333,000
Impact of unrecognized tax benefits, if recognized | 0 |  |
Interest of penalties associated with any uncertain tax positions | 0 | $ 0 |
ERC payment received | $ 3,400,000 |  |
ERC payment received, extensible enumeration | other current assets |  |
ERC payment receivable | $ 3,600,000 |  |
ERC payment receivable, extensible enumeration | Other current assets |  |
Labor and related expenses |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
ERC benefit | $ 1,800,000 |  |
General and Administrative Expense |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
ERC benefit | 5,100,000 |  |
U.S. Federal |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Net operating loss carryforwards | 754,000,000 |  |
Net operating loss carryforwards subject to expiration | 101,900,000 |  |
Net operating loss carryforwards not subject to expiration | 652,100,000 |  |
State |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Net operating loss carryforwards | 630,200,000 |  |
Net operating loss carryforwards subject to expiration | 557,200,000 |  |
Net operating loss carryforwards not subject to expiration | $ 73,000,000 |  |

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