OTHER ITEMS IMPACTING COMPARABILITY (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
	Oct. 01, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and other, net		$ 313	$ 4,255			$ 4,209	$ 1,681
Goodwill impairment charge	$ 0	0	0			15,513	0
Pension settlement charge		0	5,454			0	5,454
Operating tax adjustment		0	0		$ 2,000	0	2,205
Restructuring and other items, net		313	9,709			19,722	9,340
Restructuring charges (credits)				$ 3,000
Acquisition transaction costs and restructuring charges		400				3,000
Restructuring and other charges, related to professional fees and adjustments		1,000				3,000
Charges related to professional fees			$ 4,000				$ 4,000
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)		600				3,000
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)		$ (2,000)				$ (4,000)