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Current and long-term debt - 2023 $117.4 million credit facility (Details) | 1 Months Ended |  |
--- | --- | --- | ---
May 31, 2023 USD ($) vessel | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings |  | $ 1,588,290,000 | $ 1,436,224,000
Gross carrying amount |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings |  | 1,617,439,000 | 1,948,592,000
2023 $117.4 Million Credit Facility |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Loan maximum borrowing capacity | $ 117,400,000 |  |
Borrowings instrument, term | 5 years |  |
Periodic borrowing payment amount | $ 4,300,000 |  |
Net debt to capitalization ratio | 0.65 |  |
Consolidated tangible net worth | $ 1,000,000,000 |  |
Cumulative positive net income | 25.00% |  |
Net proceeds of equity issuance | 50.00% |  |
Minimum ratio for fair value of vessels | 150.00% |  |
2023 $117.4 Million Credit Facility | Vessels | STI Battersea, STI Wembley, STI Texas City, STI Meraux, STI Mayfair, STI St. Charles, STI Alexis |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Vessels pledged as security | vessel | 7 |  |
2023 $117.4 Million Credit Facility | Gross carrying amount |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings |  | $ 108,890,000 | $ 0
2023 $117.4 Million Credit Facility | Consolidated Liquidity Requirement - Scenario One |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Covenant liquidity requirement amount | $ 25,000,000 |  |
2023 $117.4 Million Credit Facility | Consolidated Liquidity Requirement - Scenario Two |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Liquidity requirement, per each owned ship | 500,000 |  |
Liquidity requirement, per each chartered-in ship | $ 250,000 |  |
2023 $117.4 Million Credit Facility | Secured Overnight Financing Rate (SOFR) |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Adjustment to interest rate basis | 1.925% |  |

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