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v3.19.1

RELATED PARTY TRANSACTIONS (Details) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 01, 2010 USD ($) Bcf | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2019 USD ($) Bcf / d contract | Mar. 31, 2018 USD ($) | Sep. 30, 2018 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |
Demand fees expense recognized pertaining to related party agreement |  | $ 2,144 | $ 2,087 | $ 4,329 | $ 4,236 |
Demand fees payable |  | 1,154 |  | $ 1,154 |  | $ 1,150
Number of asset management agreements | contract |  |  |  | 5 |  |
NJNG to NJRES Affilate |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Asset management agreement, period | 10 years |  |  |  |  |
NJNG to Steckman RIdge Affiliate |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Natural gas sold at cost under asset management agreement (in Bcf) | Bcf | 3 |  |  |  |  |
Approximate annual demand fees under agreement | $ 9,300 |  |  |  |  |
Demand fees expense recognized pertaining to related party agreement |  | 1,443 | 1,407 | $ 2,916 | 2,855 |
Demand fees payable |  | 778 |  | 778 |  | 775
NJRES to Steckman Ridge Affiliate |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Demand fees expense recognized pertaining to related party agreement |  | 701 | $ 680 | 1,413 | $ 1,381 |
Demand fees payable |  | $ 376 |  | $ 376 |  | $ 375
NJNG to PennEast Affiliate |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Transportation precedent agreement, period |  |  |  | 15 years |  |
Transportation capacity under precedent agreement from NJNG with PennEast (in bcf per day) | Bcf / d |  |  |  | 0.18 |  |

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