v3.26.1
DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Effect of Derivative Instruments on Statement of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Commodity swap contracts          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swap contracts $ 2,116   $ 2,116   $ 2,082
Not Designated as Hedging Instrument, Economic Hedge          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swaps - realized 5 $ 32 (138) $ (60)  
Commodity swaps - unrealized 0 1 92 (12)  
Not Designated as Hedging Instrument, Economic Hedge | Commodity swap contracts          
Derivative Instruments, Gain (Loss) [Line Items]          
Total realized and unrealized gain 774 2,772 244 1,406  
Commodity swap contracts 2,116   2,116   $ 1,990
Not Designated as Hedging Instrument, Economic Hedge | RNG Fuel          
Derivative Instruments, Gain (Loss) [Line Items]          
Commodity swaps - realized 1,193 804 256 871  
Commodity swaps - unrealized $ (424) $ 1,935 $ 34 $ 607