Sale of Stock, Consideration Received on Transaction, Gross

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

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- Definition

Cash received on stock transaction after deduction of issuance costs.

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No definition available.

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LONG-TERM DEBT (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
LONG-TERM DEBT (Details) - USD ($) $ in Millions	Mar. 22, 2021	Mar. 31, 2021	Mar. 31, 2021
Debt Instrument [Line Items]
Gross proceeds from public offering	$ 42.3
Net proceeds from public offering, after underwriting discounts and commissions	$ 40.6
Corporate Units
Debt Instrument [Line Items]
Gross proceeds from public offering		$ 300.0
Net proceeds from public offering, after underwriting discounts and commissions		$ 291.0
SJG \| Annual Payments Beginning in 2021; Final Payment Due in 2026, 4.84 Percent \| Mortgages
Debt Instrument [Line Items]
Annual payment			$ 2.5
Interest rate		4.84%	4.84%