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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) | 12 Months Ended
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Jan. 01, 2023 | Dec. 26, 2021 | Dec. 27, 2020
Summary Of Significant Accounting Policies [Line Items] |  |  |
Fiscal period, length | 364 days | 364 days | 371 days
Deposits | $ 2,400,000 | $ 3,900,000 |
Impairment Of Intangible Asset Finite Lived Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag |  |  | CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Goodwill, impairment loss | 0 | 0 | $ 0
Impairment losses | 0 | 0 | 7,239,514
Goodwill, amount expected to be tax deductible | 50,400,000 |  |
Advertising expense | 1,800,000 | 1,300,000 | 1,600,000
Tax deductible goodwill | 786,455 | $ 996,763 |
Operating loss carryforward, not subject to expiration | 3,900,000 |  |
Net operating loss carry forward limitation | 1,300,000 |  |
Other Assets |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Software assets | 2,500,000 |  |
Reclassifications of other assets | $ 1,300,000 |  |
Trade names |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Impairment of intangible assets, finite-lived |  |  | 3,700,000
Client partner list |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Impairment of intangible assets, finite-lived |  |  | $ 3,500,000
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 5 years |  |
Lessee, operating lease, renewal term (in years) | 3 years |  |
Finite-lived intangible asset, useful life | 3 years |  |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, useful life | 7 years |  |
Lessee, operating lease, renewal term (in years) | 10 years |  |
Finite-lived intangible asset, useful life | 10 years |  |

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