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ACQUISITIONS (Pro Forma Information) (Details) - L.J. Kushner & Associates, L.L.C. - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018
Business Acquisition [Line Items]
Revenue	$ 297,362	$ 290,195
Gross profit	83,730	79,927
Net income	$ 14,089	$ 18,329
Net income (loss) per share:
Basic (in dollar per share)	$ 1.38	$ 1.91
Diluted (in dollar per share)	$ 1.36	$ 1.87

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Business Acquisition, Pro Forma Gross Profit

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