v3.26.1
RELATED PARTY TRANSACTIONS - DEMAND FEES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Related Party Transaction [Line Items]          
Demand fees payable $ 640   $ 640   $ 641
Related Party          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 1,280 $ 1,268 3,799 $ 4,652  
Demand fees payable 640   640   641
Related Party | NJNG          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 1,089 1,075 3,230 4,086  
Demand fees payable 540   540   540
Related Party | ES          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 191 $ 193 569 $ 566  
Demand fees payable $ 100   $ 100   $ 101