v3.8.0.1
INTANGIBLE ASSETS Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]      
Amortization expense $ 39,600 $ 13,900 $ 16,700
2018 51,000    
2019 51,000    
2020 51,000    
2021 51,000    
2022 $ 51,000