DEBT - SALE-LEASEBACKS (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Proceeds from sale leaseback transaction - natural gas meters	$ 4,000
Proceeds from sale-leaseback transaction		$ 9,895	$ 7,820
NJNG
Debt Instrument [Line Items]
Sale leaseback transaction, lease term	16 years
Proceeds from sale leaseback transaction - natural gas meters	$ 4,000
Proceeds from sale-leaseback transaction		9,900	7,800
Sale leaseback transaction, other payments required	$ 1,200	$ 1,100
Sale leaseback transaction, other payments required			$ 2,200

Lessee Leasing Arrangements, Capital Leases, Term of Contract

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- Definition

Net Proceeds from Sale Leaseback Transaction, Financing Activities

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- Definition

Sale Leaseback Transaction, Final Principal Payments

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Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities.

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-Publisher FASB
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Other amounts the seller-lessee is required to pay under the terms of the transaction involving the sale of property to another party and lease of the property back to the seller, including reimbursements for such items, as utilities, taxes, insurance and common area maintenance.

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