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Transactions with related parties (Details) € in Thousands |  |  |  |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 18, 2018 | Nov. 14, 2018 | Dec. 30, 2014 USD ($) | Mar. 21, 2014 | Nov. 18, 2013 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 EUR (€) | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Related party transaction |  |  |  |  |  |  |  |  |  |
Management fees-related party |  |  |  |  |  | $ 3,168,000 |  | $ 3,076,000 |  |
Charter hire commissions |  |  |  |  |  | 811,000 |  | 826,000 |  |
Due from related party |  |  |  |  |  | 1,350,000 |  | 1,350,000 | $ 1,350,000 |
Due to related party |  |  |  |  |  | 458,000 |  |  | 1,472,000 |
Annual executive services fee |  |  |  |  |  | $ 291,000 |  | 296,000 |  |
Foreign currency exchange rate |  |  |  |  |  | 1.0812 |  |  |  |
Administrative service fee |  |  |  |  |  | $ 60,000 |  | 60,000 |  |
Dynagas Holding Ltd |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Daily management fee |  |  |  |  |  | $ 2,900 |  | 2,800 |  |
Master Agreement |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Daily management fee |  |  |  |  |  |  |  |  |  | $ 2,750,000
Management fees annual upward percentage adjustment |  |  |  |  |  |  |  |  |  | 3.00%
Administrative services days termination notice |  |  |  |  |  |  |  |  |  | 6 months
Related party transaction, terms and manner of settlement |  |  |  |  |  | 5% | 5% |  |  |
Management fees-related party |  |  |  |  |  | $ 3,168,000 |  | 3,076,000 |  |
Charter hire commission payable to the management company |  |  |  |  |  | 1.25% | 1.25% |  |  |
Charter hire commissions |  |  |  |  |  | $ 811,000 |  | 826,000 |  |
Due from related party |  |  |  |  |  | 1,350,000 |  | 1,350,000 |  |
Dynagas Ltd | Working capital advances |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Due to related party |  |  |  |  |  | 74,000 |  |  | 836,000 |
$30 million sponsor facility | Dynagas Holding Ltd |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Revolving credit facility borrowing capacity |  |  |  |  | $ 30,000,000 |  |  |  |  |
Debt instrument term |  |  |  |  | 5 years |  |  |  |  |
Amount drawn |  |  |  |  |  | 0 |  |  | $ 0 |
$30 million extended sponsor facility |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Debt instrument term |  | 5 years |  |  |  |  |  |  |  |
Executive services agreement |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Annual executive services fee |  |  |  |  |  | $ 582,000 | € 538 |  |  |
Executive services agreement initial term |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Executive services agreement duration period |  |  |  | 5 years |  |  |  |  |  |
Executive services agreement automatic renewal |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Executive services agreement duration period | 5 years |  |  |  |  |  |  |  |  |
Administrative services agreement |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Administrative services days termination notice |  |  |  |  |  | 120 days | 120 days |  |  |
Administrative service fee |  |  |  |  |  | $ 60,000 |  | $ 60,000 |  |
Administrative services agreement | Monthly fee |  |  |  |  |  |  |  |  |  |
Related party transaction |  |  |  |  |  |  |  |  |  |
Administrative service fee |  |  | $ 10,000 |  |  |  |  |  |  |

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