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REGULATION - REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | $ 35,030 | $ 36,530
Overrecovered natural gas costs | 14,037 | 26,188
Regulatory liabilities-noncurrent | 193,222 | 196,450
Adelphia |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | 269 | 158
Regulatory assets-noncurrent | 1,911 | 997
Regulatory liabilities-noncurrent | 223 | 0
NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | 34,761 | 36,372
Regulatory assets-noncurrent | 535,274 | 526,462
Overrecovered natural gas costs | 14,037 | 26,188
Regulatory liabilities-noncurrent | 192,999 | 196,286
Total current regulatory liabilities | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Overrecovered natural gas costs | 2,189 | 25,914
Derivatives at fair value, net | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Overrecovered natural gas costs | 11,848 | 274
Regulatory liabilities-noncurrent | 959 | 352
Tax Act impact | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory liabilities-noncurrent | 191,641 | 195,425
Other noncurrent regulatory liabilities | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory liabilities-noncurrent | 399 | 509
New Jersey Clean Energy Program | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | 18,329 | 15,570
Conservation Incentive Program | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | 14,602 | 19,120
Other current regulatory assets | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-current | 1,830 | 1,682
Regulatory assets-noncurrent | 20,160 | 20,068
Expended, net of recoveries | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 44,333 | 36,516
Liability for future expenditures | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 136,882 | 150,590
Deferred income taxes | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 33,506 | 28,241
Derivatives at fair value, net | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 0 | 1
SAVEGREEN | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 24,929 | 21,281
Postemployment and other benefit costs | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 176,454 | 188,170
Deferred storm damage costs | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 4,886 | 6,515
Cost of removal | NJNG |  |
Regulatory Assets And Liabilities [Line Items] |  |
Regulatory assets-noncurrent | $ 94,124 | $ 75,080

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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