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DISCONTINUED OPERATIONS - Financial Results of Instaff (Details) - USD ($) | 12 Months Ended
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Jan. 01, 2023 | Dec. 26, 2021 | Dec. 27, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income from operations of discontinued operations before gain on sale and income taxes | $ 1,234,996 | $ 4,570,216 | $ 4,767,103
Instaff | Discontinued operations |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Revenue | 16,465,000 | 71,292,000 | 70,765,000
Cost of services | 14,144,000 | 60,948,000 | 60,585,000
Gross profit | 2,321,000 | 10,344,000 | 10,180,000
Selling expenses | 1,062,000 | 5,684,000 | 5,314,000
Depreciation | 24,000 | 90,000 | 99,000
Income from operations of discontinued operations before gain on sale and income taxes | $ 1,235,000 | $ 4,570,000 | $ 4,767,000

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