DISCONTINUED OPERATIONS - Financial Results of Instaff (Details) - USD ($)	3 Months Ended
Mar. 27, 2022	Mar. 28, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from operations of discontinued operations before taxes	$ 1,234,996	$ 1,155,670
Instaff \| Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	16,465,067,000	17,961,498,000
Cost of services	14,143,775,000	15,361,476,000
Gross profit	2,321,292,000	2,600,022,000
Selling expenses	1,062,044,000	1,420,920,000
Depreciation	24,252,000	23,432,000
Income from operations of discontinued operations before taxes	$ 1,234,996,000	$ 1,155,670,000

Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations.

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