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ACCOUNTING POLICIES, CRITICAL ACCOUNTING ESTIMATES AND JUDGEMENTS (Details Textual 3) - cashgeneratingunit
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Accounting Policy [Line Items]      
Depreciation method straight-line basis    
Number of cash generating unit 1 1 2
Minimum percentage of difference to recognize new financial liability 10.00%    
Dry Docking period every 30 and 60 months    
Ships      
Disclosure Of Accounting Policy [Line Items]      
Estimated useful lives 25 years    
Computer equipment      
Disclosure Of Accounting Policy [Line Items]      
Estimated useful lives over three years    
Other property, plant and equipment      
Disclosure Of Accounting Policy [Line Items]      
Estimated useful lives over five years