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AQUISITIONS AND DISCONTINUED OPERATIONS - Pro Forma Results (Details) - Cues, Inc. - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 29, 2018	Sep. 29, 2018
Business Acquisition [Line Items]
Revenues	$ 362.5	$ 1,127.7
Income from continuing operations	9.4	45.4
Net income	$ 9.2	$ 48.5
Income from continuing operations per share of common stock, basic (USD per share)	$ 0.22	$ 1.06
Income from continuing operations per share of common stock, diluted (USD per share)	0.21	1.02
Net income per share of common stock, basic (USD per share)	0.21	1.13
Net income per share of common stock, diluted (USD per Share)	$ 0.20	$ 1.09

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