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REGULATION - REGULATORY FILINGS (Details) - USD ($) $ in Thousands |  |  |  |  |  |  | 3 Months Ended | 4 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 25, 2020 | May 29, 2020 | Mar. 30, 2020 | Mar. 16, 2020 | Nov. 15, 2019 | Nov. 01, 2019 | Jun. 30, 2020 | Jul. 24, 2020
NJNG EE Recovery Rate | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  |  | $ 11,300 |  |
Base Rate Stipulation |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  | $ 62,200 |  |  |
Approved rate increase (decrease) |  |  |  |  | 6.95% |  |  |
Approved return on equity |  |  |  |  | 9.60% |  |  |
Approved equity capital structure, percentage |  |  |  |  | 54.00% |  |  |
Approved depreciation rate |  |  |  |  | 2.78% |  |  |
RAC | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  | $ 1,200 |  |  |  |
NJCEP | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  | $ (600) |  |  |  |
NJ RISE And SAFE II Capital Investments | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  | $ 7,400 |  |  |  |  |
Capital investment costs |  |  |  |  |  |  | $ 57,900 |
BGSS | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  | $ (20,400) |  |  |  |  |  |
BGSS Balancing | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  | (3,900) |  |  |  |  |  |
Conservation Incentive Program | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  | 22,300 |  |  |  |  |  |
BPU | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  | $ (70) |  |  |  |  |  |
June 2020 Annual U S F Compliance Filing | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Requested rate increase (decrease), amount | $ (400) |  |  |  |  |  |  |
Subsequent Event | NJ RISE And SAFE II Capital Investments | NJNG |  |  |  |  |  |  |  |
Schedule of Regulatory Filings [Line Items] |  |  |  |  |  |  |  |
Approved rate increase (decrease), amount |  |  |  |  |  |  |  | $ 7,100
Capital investment costs |  |  |  |  |  |  |  | $ 55,100

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