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Current and long-term debt - 2020 TSFL lease financing (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Nov. 30, 2023
USD ($)
Mar. 31, 2021
Nov. 30, 2020
USD ($)
tanker
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Oct. 31, 2023
USD ($)
Jul. 31, 2023
Jan. 31, 2023
USD ($)
Disclosure of detailed information about borrowings [line items]                  
Borrowings       $ 1,588,290 $ 1,436,224        
Principal repayments recognized in consolidated cash flow statements       $ 516,127 $ 79,502 $ 56,729      
Purchase option fees             $ 1,700   $ 1,200
2020 TSFL Lease Financing                  
Disclosure of detailed information about borrowings [line items]                  
Borrowings     $ 47,300            
Sale leaseback transaction, term     7 years            
Principal repayments recognized in consolidated cash flow statements $ 38,100                
Purchase option fees $ 1,100                
Borrowings, bareboat charter term   7 years              
2020 TSFL Lease Financing | Secured Overnight Financing Rate (SOFR)                  
Disclosure of detailed information about borrowings [line items]                  
Adjustment to interest rate basis               3.20%  
2020 TSFL Lease Financing | Vessels | MR | STI Galata and STI La Boca                  
Disclosure of detailed information about borrowings [line items]                  
Number of vessels under finance lease arrangements | tanker     2