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ACQUISITIONS (Pro Forma Information) (Details) - D&W Talent, LLC, Technology Services, Inc., Vision Technology Services, LLC, and VTS-VM $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 30, 2018 USD ($) $ / shares
Business Acquisition [Line Items]
Revenue	$ 290,359
Gross profit	73,647
Net income	$ 6,117
Net income (loss) per share:
Basic (in dollar per share) | $ / shares	$ 0.70
Diluted (in dollar per share) | $ / shares	$ 0.68

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