INCOME TAXES (Income tax provisions) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017 Provisional Transition Tax Netted Against Tax Cuts and Jobs Act Deferred Tax		$ 10,198	$ 0	$ 0
Current:
Federal		29,700	9,600	1,200
Foreign		10,200	11,400	17,400
State		1,100	800	800
Total current	$ 1,900	41,000	21,800	19,400
Deferred:
Federal		(10,700)	2,900	(1,800)
Foreign		(4,500)	(1,000)	(4,000)
State		200	1,100	(1,000)
Total deferred		(15,000)	3,000	(6,800)
Current payable and deferred - Income tax provisions		$ 25,994	$ 24,798	$ 12,625