OTHER ITEMS IMPACTING COMPARABILITY (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	Oct. 01, 2017	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring and other, net		$ 3,615	$ 500	$ (2,574)	$ 3,896	$ (2,574)
Goodwill impairment charge	$ 0	0		0	15,513	0
Operating tax adjustment		0		0	0	2,205
Restructuring and other items, net		3,615		(2,574)	19,409	$ (369)
Restructuring credits related to gains on sale of UK facilities		(1,000)		$ 2,600
Acquisition transaction costs and restructuring charges		2,000			$ 2,000
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring credits related to gains on sale of UK facilities		$ 3,000