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Long-Term Debt, net - Annual Loan Principal Payments (Table) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | $ 41,660 | $ 65,778
HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 24,937 | 25,936
DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 8,380 | 9,700
DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 8,343 | 9,592
Firment Trading Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 17,435
Silaner Investments Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 3,115
Not later than one year |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 12,403 | 23,634
Not later than one year | HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 2,774 | 2,774
Not later than one year | DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 8,380 | 1,760
Not later than one year | DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 1,249 | 1,665
Not later than one year | Firment Trading Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 17,435
Not later than one year | Silaner Investments Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than one year and not later than two years |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 29,257 | 15,494
Later than one year and not later than two years | HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 22,163 | 2,774
Later than one year and not later than two years | DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 0 | 7,940
Later than one year and not later than two years | DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 7,094 | 1,665
Later than one year and not later than two years | Firment Trading Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than one year and not later than two years | Silaner Investments Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 3,115
Later than two years and not later than three years |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 26,650
Later than two years and not later than three years | HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 20,388
Later than two years and not later than three years | DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than two years and not later than three years | DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 6,262
Later than two years and not later than three years | Firment Trading Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than two years and not later than three years | Silaner Investments Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than two years |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 0 |
Later than two years | HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 0 |
Later than two years | DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | 0 |
Later than two years | DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance | $ 0 |
Later than three years |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than three years | HSH Bank |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than three years | DVB Bank | Tranche (A) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than three years | DVB Bank | Tranche (B) |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than three years | Firment Trading Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | 0
Later than three years | Silaner Investments Limited |  |
Disclosure of detailed information about borrowings [line items] |  |
Loan Balance |  | $ 0

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