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SEGMENT INFORMATION Narrative (Details) | 12 Months Ended
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Jan. 01, 2017 | Dec. 25, 2015 | Dec. 26, 2014
Outside of United States [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Property and Equipment Percent | 7.00% | 2.00% |
Customer A [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage |  | 13.10% |
Customer A [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] | PeopleManagement |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage | 18.20% | 36.70% | 30.60%
Customer B [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] | PeopleScout |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage | 12.80% |  |
Customer C [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] | PeopleScout |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage | 10.00% |  |
Customer D [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] | PeopleScout |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage |  | 10.60% |
Customer E [Member] | Customer Concentration Risk | Sales Revenue, Segment [Member] | PeopleScout |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage |  | 10.20% |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 + Details
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