v3.26.1
Related Party Transactions - Transactions with existing related parties (Details)
$ in Thousands
1 Months Ended 5 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
instatementPayment
Jun. 29, 2026
USD ($)
Jan. 01, 2025
Feb. 28, 2026
USD ($)
Aug. 31, 2024
USD ($)
Jun. 30, 2026
USD ($)
instatementPayment
Jun. 30, 2026
USD ($)
instatementPayment
Jun. 30, 2025
USD ($)
Apr. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Related Party Transaction [Line Items]                    
Number of instalments | instatementPayment 2         2 2      
Total operating revenues             $ 268,033 $ 138,175    
Vessel management fees and other revenue                    
Related Party Transaction [Line Items]                    
Total operating revenues             57,920 16,880    
SESA Shareholder Loan | Line of Credit                    
Related Party Transaction [Line Items]                    
Maximum borrowing capacity       $ 5,600            
Proceeds from lines of credit           $ 3,600        
Basis spread on variable rate (in percent)       3.875%            
Interest income             89 0    
Remains undrawn under the facility $ 2,000         2,000 2,000      
Higas Shareholder Loan | Line of Credit                    
Related Party Transaction [Line Items]                    
Remains undrawn under the facility 1,500         1,500 1,500      
Interest income             0 300    
Accounts receivable, allowance for credit loss 300         300 300 1,100    
Higas Shareholder Loan | Line of Credit | Revolving credit facility                    
Related Party Transaction [Line Items]                    
Revolving credit facility 4,000 $ 2,500                
First FLNG Holdings ("FFH") | Line of Credit                    
Related Party Transaction [Line Items]                    
Maximum borrowing capacity         $ 20,000          
Interest income             0 1,000    
Related Party | Vessel management fees and other revenue                    
Related Party Transaction [Line Items]                    
Total operating revenues             300 $ 0    
Southern Energy S.A., SESA | Related Party                    
Related Party Transaction [Line Items]                    
Receivable from TTF linked commodity swap derivatives 3,900         3,900 3,900     $ 0
Southern Energy S.A., SESA | Related Party | Vessel management fees and other revenue                    
Related Party Transaction [Line Items]                    
Total operating revenues             300      
Southern Energy S.A., SESA | Related Party | Mooring System Contract Supervision Agreement                    
Related Party Transaction [Line Items]                    
Receivable from TTF linked commodity swap derivatives                 $ 2,500  
Receivable in period                 26 months  
Higas | Related Party                    
Related Party Transaction [Line Items]                    
Receivable from TTF linked commodity swap derivatives $ 2,164         $ 2,164 $ 2,164     $ 1,691
FLNG Holdings | Loan to related party                    
Related Party Transaction [Line Items]                    
Related party transaction rate (in percentage)     22.00%   12.00%