v3.25.2
Long-Term Debt - Daqing Facility (Details) - Daqing Facility - USD ($)
Jul. 02, 2025
Mar. 31, 2022
Long-Term Debt    
Debt instrument face amount   $ 84,600,000
Subsequent event    
Long-Term Debt    
Final payment $ 62,300,000  
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember  
Spread on variable rate 1.94%  
Minimum liquidity amount $ 500,000  
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) 120.00%