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Significant Accounting Policies (Details Narrative) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) Integer $ / t | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Jul. 08, 2020 USD ($)
Trade accounts receivable, net | $ 663 | $ 1,243 |  |
Allowance for credit losses | (9) |  |  |
Hire collected in advance | $ 726 | 1,415 |  |
Residual value per lightweight ton | $ / t | 0.300 |  |  |
Estimated useful life | 25 years |  |  |
Estimated fleet utilization rate depending on the type of the vessel, minimum rate | 75.00% |  |  |
Estimated fleet utilization rate depending on the type of the vessel, maximum rate | 98.60% |  |  |
Estimated fleet utilization rate including scheduled off-hire days for planned dry dockings and vessel surveys minimum rate | 78.00% |  |  |
Estimated fleet utilization rate including scheduled off-hire days for planned dry dockings and vessel surveys maximum rate | 93.00% |  |  |
Vessel impairment charge |  |  | $ 2,282 |
Number of reportable segments | Integer | 1 |  |  |
Working capital deficit | $ 2,895 |  |  |
Restricted cash | $ 2,417 | 3,735 | $ 3,659 |
Credit loss description | The Company concluded on an expected credit loss rate of 0.05% on the total outstanding receivables arising from voyage charters and 2.4% on outstanding receivables from demurrages. |  |  |
Secured Loan - Seventhone Corp. [Member] |  |  |  |
Total long-term debt outstanding |  |  |  | $ 15,250
Previous Secured Loan - Seventhone Corp [Member] |  |  |  |
Total long-term debt outstanding |  |  |  | $ 11,293
Spot Charters [Member] |  |  |  |
Trade accounts receivable, net | $ 672 | 743 |  |
Time Charters [Member] |  |  |  |
Trade accounts receivable, net | $ 1 | $ 500 |  |

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