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DISCONTINUED OPERATIONS - Financial Results of Instaff (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 26, 2022
Jun. 27, 2021
Jun. 26, 2022
Jun. 27, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Income from discontinued operations before taxes $ 0 $ 1,010,779 $ 1,234,995 $ 2,166,448
Instaff | Discontinued Operations, Held-for-sale        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Revenue 0 16,994,000,000 16,465,000,000 34,955,000,000
Cost of services 0 14,458,000,000 14,144,000,000 29,820,000,000
Gross profit 0 2,535,000,000 2,321,000,000 5,135,000,000
Selling expenses 0 1,500,000,000 1,062,000,000 2,921,000,000
Depreciation 0 25,000,000 24,000,000 48,000,000
Income from discontinued operations before taxes $ 0 $ 1,011,000,000 $ 1,235,000,000 $ 2,166,000,000