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ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
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Sep. 30, 2017
Asset Retirement Obligation Disclosure [Abstract] |
Analysis of Change in ARO Liability | The following is an analysis of the change in the Company’s AROs for the fiscal year ended September 30:
(Thousands) | 2017 |  | 2016
| NJNG | NJRCEV |  | NJNG | NJRCEV
Balance at October 1 | $ | 23,521 |  | $ | 4,858 |  |  | $ | 16,773 |  | $ | 2,372 |
Accretion | 1,304 |  | 245 |  |  | 1,048 |  | 158 |
Additions | 729 |  | 1,492 |  |  | 783 |  | 2,328 |
Revisions in estimated cash flows | (245 | ) | — |  |  | 5,320 |  | — |
Retirements | (484 | ) | — |  |  | (403 | ) | — |
Balance at period end | $ | 24,825 |  | $ | 6,595 |  |  | $ | 23,521 |  | $ | 4,858 |
Schedule of Future Accretion | Accretion for the next five years is estimated to be as follows:
(Thousands) |  |  |
Fiscal Year Ended September 30, | Estimated Accretion
2018 |  | $ | 1,644 |  |
2019 |  | 1,718 |  |
2020 |  | 1,795 |  |
2021 |  | 1,877 |  |
2022 |  | 1,960 |  |
Total |  | $ | 8,994 |  |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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