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Accrued Liabilities, Detail (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accrued Liabilities [Abstract] |  |
Interest on long-term debt | $ 1,588 | $ 4,225
Vessels’ operating and voyage expenses | 4,223 | 1,808
Commissions | 176 | 139
Interest on derivatives and other finance expenses | 511 | 566
General and administrative expenses | 97 | 145
Total | $ 6,595 | $ 6,883

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