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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved return on equity.

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Composite depreciation rate for public utility plants in service.

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The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

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Rate and Regulatory Matters (Details) - USD ($)						1 Months Ended	12 Months Ended
Rate and Regulatory Matters (Details) - USD ($)	Jan. 02, 2023	Dec. 31, 2022	Aug. 31, 2022	Jan. 02, 2022	Mar. 31, 2021	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Nov. 30, 2021
Rate and Regulatory Matters (Details) [Line Items]
Corporate tax rate			6.00%
Annual revenues							$ 2,200,000
DSIC rate, description							Tidewater reset its Distribution System Improvement Charge (DSIC) rate to zero effective April 1, 2021
capital expenditures rate							5.39%
Regulatory liabilities		$ 290,000,000					$ 290,000,000	$ 30,400,000
Maximum [Member]
Rate and Regulatory Matters (Details) [Line Items]
Corporate tax rate							35.00%
Minimum [Member]
Rate and Regulatory Matters (Details) [Line Items]
Corporate tax rate							21.00%
Middlesex Water [Member]
Rate and Regulatory Matters (Details) [Line Items]
Regulatory liabilities		17,700,000					$ 17,700,000	16,100,000
Pinelands [Member]
Rate and Regulatory Matters (Details) [Line Items]
Approved increase in annual operating revenues						$ 400,000
Maturity Less than 30 Days [Member] \| Middlesex Water Company [Member]
Rate and Regulatory Matters (Details) [Line Items]
Escrow account									$ 1,700,000
New Jersey Board of Public Utilities [Member] \| Middlesex Water [Member]
Rate and Regulatory Matters (Details) [Line Items]
Approved increase in annual operating revenues		2,700,000		$ 20,700,000	$ 1,100,000			27,700,000
Base rate amount								$ 513,500,000
Return on equity								9.60%
Regulatory liabilities		$ 0					$ 0	$ 3,000,000
New Jersey Board of Public Utilities [Member] \| Pinelands [Member]
Rate and Regulatory Matters (Details) [Line Items]
Approved increase in annual operating revenues						$ 600,000
Delaware Public Service Commission [Member]
Rate and Regulatory Matters (Details) [Line Items]
Percentage of consumer price index							3.00%
Maturity date							Dec. 31, 2029
Delaware Public Service Commission [Member] \| Tidewater [Member]
Rate and Regulatory Matters (Details) [Line Items]
Approved increase in annual operating revenues					$ 1
Forecast [Member] \| New Jersey Board of Public Utilities [Member] \| Middlesex Water [Member]
Rate and Regulatory Matters (Details) [Line Items]
Approved increase in annual operating revenues	$ 7,000,000