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SEGMENT INFORMATION Narrative (Details)	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
International operations
Segment Reporting Information [Line Items]
Net property and equipment, percent	7.30%	9.10%
Customer A | Customer Concentration Risk | Sales Revenue, Segment | PeopleManagement
Segment Reporting Information [Line Items]
Concentration risk, percentage			18.20%
Customer B | Customer Concentration Risk | Sales Revenue, Segment | PeopleScout
Segment Reporting Information [Line Items]
Concentration risk, percentage	13.30%
Customer C | Customer Concentration Risk | Sales Revenue, Segment | PeopleScout
Segment Reporting Information [Line Items]
Concentration risk, percentage		14.40%	12.80%
Customer D | Customer Concentration Risk | Sales Revenue, Segment | PeopleScout
Segment Reporting Information [Line Items]
Concentration risk, percentage		10.10%	10.00%

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Net Property and Equipment Percent

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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