v3.26.1
RELATED PARTY TRANSACTIONS - DEMAND FEES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Sep. 30, 2025
Related Party Transaction [Line Items]          
Demand fees payable $ 641   $ 641   $ 641
Related Party          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 1,242 $ 1,666 2,519 $ 3,384  
Demand fees payable 641   641   641
Related Party | NJNG          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 1,059 1,486 2,141 3,010  
Demand fees payable 540   540   540
Related Party | ES          
Related Party Transaction [Line Items]          
Demand fees expense recognized pertaining to related party agreement 183 $ 180 378 $ 374  
Demand fees payable $ 101   $ 101   $ 101