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Intangible Assets - Aggregate Amortizations (Table) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
INTANGIBLE ASSETS [Abstract]      
2019 $ 1,166    
2020 1,166    
2021 1,166    
2022 and thereafter 834    
Total $ 4,332 $ 8,080 $ 18,952