COMMITMENTS AND CONTINGENCIES (Leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Lease terms range minimum	1 year
Lease terms range maximum	24 years
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2018	$ 44,476
2019	37,161
2020	30,233
2021	22,173
2022	17,432
Thereafter	45,370
Total minimum lease payments	196,845
Operating leases, rent expense, net	$ 125,400	$ 121,900	$ 135,500