INTANGIBLE ASSETS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-lived intangible assets, gross	$ 92,000	$ 92,000
Finite-Lived intangible asset, useful Life	9 years
Finite-lived intangible assets, amortization expense, 2018	$ 4,600
Finite-lived intangible assets, amortization expense, 2019	4,600
Finite-lived intangible assets, amortization expense, 2020	4,600
Finite-lived intangible assets, amortization expense, 2021	4,600
Finite-lived intangible assets, amortization expense, 2022	$ 4,600