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Transactions with Related Parties (Details Narrative) | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 03, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 EUR (€) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 21, 2016 USD ($) | Dec. 31, 2021 USD ($) | Dec. 30, 2020 | Aug. 03, 2018 | Dec. 31, 2014
Vessels acquired |  | 0 |  |  |  |  |  |  |  |
Long-Term Investments |  | $ 1,676,000 |  |  |  |  | $ 1,567,000 |  |  |
Augustea Technoservices Ltd. and affiliates [Member] |  |  |  |  |  |  |  |  |  |
Vessels acquired |  |  |  |  |  |  |  |  | 16 |
Expiration date of agreement |  | June 2022 | June 2022 |  |  |  |  |  |  |
Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 3 | 3 |  |  |  |  |  |  |
Euro Member Countries, Euro |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Rate, Translation |  | 1.07 |  |  |  |  |  |  |  |
Management and Directors Fees [Member] |  |  |  |  |  |  |  |  |  |
Executive consultancy fees |  | $ 541,000 |  |  |  |  |  |  |  |
Management and Directors Fees [Member] | Non - Employee Directors [Member] |  |  |  |  |  |  |  |  |  |
Executive consultancy fees |  | 15,000 |  |  |  |  |  |  |  |
Management and Directors Fees [Member] | Chairman of Audit Committee [Member] |  |  |  |  |  |  |  |  |  |
Executive consultancy fees |  | 15,000 |  |  |  |  |  |  |  |
Management and Directors Fees [Member] | Audit Committee Member [Member] |  |  |  |  |  |  |  |  |  |
Executive consultancy fees |  | 7,500 |  |  |  |  |  |  |  |
Management and Directors Fees [Member] | Attendance Of Meetings [Member] |  |  |  |  |  |  |  |  |  |
Executive consultancy fees |  | 5,000 |  |  |  |  |  |  |  |
Combine Marine Ltd [Member] |  |  |  |  |  |  |  |  |  |
Rent expense per month |  | $ 2,700 | € 2,500,000 |  |  |  |  |  |  |
Lease expiration date |  | January 2024 | January 2024 |  |  |  |  |  |  |
Alma Properties [Member] |  |  |  |  |  |  |  |  |  |
Rent expense per month |  |  | € 300 |  |  | $ 300 |  |  |  |
Oaktree Shareholder Agreement [Member] | Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 9 | 9 |  |  |  |  |  |  |
Oaktree Shareholder Agreement [Member] | Beneficial ownership of 40% ore more [Member] | Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 4 | 4 |  |  |  |  |  |  |
Oaktree Shareholder Agreement [Member] | Beneficial Ownershio of 25% or more but less than 40% [Member] | Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 3 | 3 |  |  |  |  |  |  |
Oaktree Shareholder Agreement [Member] | Beneficial Ownership of 15% or more but less than 25% [Member] | Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 2 | 2 |  |  |  |  |  |  |
Oaktree Shareholder Agreement [Member] | Beneficial ownership of 5% or more but less than 15% [Member] | Oaktree Capital Management L.P. [Member] |  |  |  |  |  |  |  |  |  |
Number of directors |  | 1 | 1 |  |  |  |  |  |  |
Piraeus Bank S. A. [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 50,350,000 |  |  |  |  |  |  |  |  |
Maturity date | September 2021 |  |  |  |  |  |  |  |  |
Interchart [Member] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  |  | 33.00%
Monthly lump sum fee |  | $ 345,000 |  | $ 315,000 | $ 325,000 |  |  |  |  |
Expiration date of agreement |  | Dec. 31, 2022 | Dec. 31, 2022 |  |  |  |  |  |  |
Starocean [Member] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  | 25.00% |  |  |  |  |  |  |  |
Starocean [Member] | Held By Local Entrepreneurs [Member] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  | 75.00% |  |  |  |  |  |  |  |
CCL Pool [Member] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  | 33.00% |  |  |  |  |  | 25.00% |  |
Long-Term Investments |  | $ 125,000 |  |  |  |  |  |  |  |

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