v3.26.3
DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Effect of Derivative Instruments on Statement of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Commodity swap contracts          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swap contracts $ 2,000   $ 2,000   $ 2,082
Not Designated as Hedging Instrument, Economic Hedge          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swaps - realized 0 $ 8 (138) $ (52)  
Commodity swaps - unrealized 0 12 92 0  
Not Designated as Hedging Instrument, Economic Hedge | Commodity swap contracts          
Derivative Instruments, Gain (Loss) [Line Items]          
Total realized and unrealized gain 1,111 1,362 1,355 2,768  
Commodity swap contracts 2,000   2,000   $ 1,990
Not Designated as Hedging Instrument, Economic Hedge | RNG Fuel          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swaps - realized 1,227 1,029 1,483 1,900  
Commodity swaps - unrealized $ (116) $ 313 $ (82) $ 920