v3.26.1
Long-Term Debt - Hedda Loan Facility and Senior Secured Credit Facility (Details)
 6 Months Ended
Aug. 31, 2026
USD ($)
Aug. 07, 2026
USD ($)
item
installment
Jun. 28, 2024
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Mar. 03, 2025
USD ($)
Long-Term Debt            
Outstanding amount       $ 902,500,000    
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]       us-gaap:SecuredOvernightFinancingRateSofrMember    
Long-term debt       $ 905,915,000 $ 959,633,000  
Live Facility            
Long-Term Debt            
Minimum liquidity amount           $ 500,000
$99 million term loan facility            
Long-Term Debt            
Face amount of debt     $ 99,000,000      
Hedda Loan Facility            
Long-Term Debt            
Face amount of debt     99,000,000 99,000,000    
Outstanding amount       89,400,000    
Balloon payment to be paid       $ 61,900,000    
Interest margin percentage       1.60%    
Minimum liquidity of Partnership           15,000,000
Incremental minimum liquidity, first 8 vessels with less than 12 months employment contract remaining           10,000,000
Incremental minimum liquidity, next 12 vessels with less than 12 months employment contract remaining           1,500,000
Amount of cash           $ 1,000,000
Minimum book equity ratio (percent)           30.00%
Minimum EBITDA to interest ratio           2.5
Hedda Loan Facility | Subsequent event            
Long-Term Debt            
Face amount of debt $ 99,000,000          
Balloon payment to be paid $ 61,900,000          
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] us-gaap:SecuredOvernightFinancingRateSofrMember          
Interest margin percentage 1.60%          
Hedda Loan Facility | Prior To October 24 2026            
Long-Term Debt            
Face amount of debt       $ 99,000,000    
Maximum market value of vessels as percentage of outstanding loan (in percent)       115.00%    
Hedda Loan Facility | Prior to October 24, 2028            
Long-Term Debt            
Maximum market value of vessels as percentage of outstanding loan (in percent)       120.00%    
Hedda Loan Facility | On or Prior to October 24, 2028            
Long-Term Debt            
Maximum market value of vessels as percentage of outstanding loan (in percent)       125.00%    
Vessel Hedda Knutsen            
Long-Term Debt            
Final payment     $ 99,000,000      
Senior secured credit facility | Subsequent event            
Long-Term Debt            
Face amount of debt   $ 225,000,000        
Balloon payment to be paid   $ 111,100,000        
Number of consecutive quarterly installments | installment   20        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember        
Interest margin percentage   1.65%        
Minimum liquidity amount   $ 250,000        
Minimum liquidity of Partnership   15,000,000        
Incremental minimum liquidity, first 8 vessels with less than 12 months employment contract remaining   1,500,000        
Incremental minimum liquidity, next 12 vessels with less than 12 months employment contract remaining   1,000,000        
Amount of cash   $ 10,000,000        
Minimum book equity ratio (percent)   30.00%        
Minimum EBITDA to interest ratio   2.5        
Maximum market value of vessels as percentage of outstanding loan (in percent)   135.00%        
Debt instrument, vessels pledged as collateral | item   5        
$345 million loan facility            
Long-Term Debt            
Face amount of debt       $ 345,000,000 345,000,000  
Long-term debt       $ 225,798,000 $ 238,343,000  
$345 million loan facility | Subsequent event            
Long-Term Debt            
Long-term debt   $ 225,800,000