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Administrative Expenses (Table) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Administrative Expenses [Abstract]      
Personnel expenses $ 1,006 $ 778 $ 628
Audit fees 98 103 101
Travelling expenses 3 5 3
Consulting fees 191 76 54
Communication 7 9 11
Stationery 2 2 2
Greek tax authorities (note 19) 116 118 116
Other 160 265 309
Total $ 1,583 $ 1,356 $ 1,224