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v3.26.1

Current and long-term debt - Ocean Yield lease financing (Details) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2026 USD ($) vessel | Oct. 31, 2022 USD ($) | Sep. 30, 2017 USD ($) vessel | Dec. 31, 2025 USD ($) vessel | Dec. 31, 2024 USD ($) vessel | Dec. 31, 2023 USD ($) | Sep. 01, 2017 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  | 1 |  |  |
Principal repayments recognized in consolidated cash flow statements |  |  |  | $ 0 | $ 0 | $ 516,127,000 |
Borrowings |  |  |  | 619,204,000 | 861,967,000 |  |
Gross carrying amount |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  | 628,428,000 | 877,993,000 |  |
Ocean Yield Lease Financing |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Net debt to capitalization ratio |  |  | 0.60 |  |  |  |
Consolidated tangible net worth |  |  | $ 1,000,000,000.0 |  |  |  |
Cumulative positive net income |  |  | 25.00% |  |  |  |
Borrowings, restrictive covenants, percent of new equity offerings |  |  |  |  |  |  | 50.00%
Ocean Yield Lease Financing | Gross carrying amount |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  | $ 19,197,000 | $ 22,209,000 |  |
Ocean Yield Lease Financing | STI Symphony | Lease option to purchase option exercised |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Principal repayments recognized in consolidated cash flow statements | $ 18,900,000 |  |  |  |  |  |
Vessels |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  |  | 93 | 99 |  |
Vessels | Lease option to purchase option exercised |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Number of ships, purchase option exercised and lease obligation repaid | vessel | 1 |  |  |  |  |  |
Vessels | Ocean Yield Lease Financing | STI Symphony | Repayment Of Debt Obligation |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Principal repayments recognized in consolidated cash flow statements | $ 18,900,000 |  |  |  |  |  |
Vessels | Ocean Yield Lease Financing | STI Sanctity, STI Steadfast, And STI Supreme |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Sale-leaseback transaction, purchase option price |  | $ 27,800,000 |  |  |  |  |
LR2 | NPTI September Closing | Ocean Yield Lease Financing | Secured Overnight Financing Rate (SOFR) | STI Sanctity, STI Steadfast, STI Supreme and STI Symphony |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Adjustment to interest rate basis |  |  | 5.40% |  |  |  |
LR2 | NPTI September Closing | Vessels | Ocean Yield Lease Financing | STI Sanctity, STI Steadfast, STI Supreme and STI Symphony |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Number of vessels | vessel |  |  | 4 |  |  |  |
Consolidated Liquidity Requirement - Scenario One | Ocean Yield Lease Financing |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Covenant liquidity requirement amount |  |  |  |  |  |  | $ 25,000,000.0
Consolidated Liquidity Requirement - Scenario Two | Ocean Yield Lease Financing |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Consolidated liquidity requirement per each owned vessel |  |  |  |  |  |  | 500,000
Consolidated liquidity requirement per each chartered-in vessel |  |  |  |  |  |  | $ 250,000

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