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v3.23.1

Rate and Regulatory Matters (Details) - USD ($) $ in Millions |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Apr. 12, 2023 | Jan. 02, 2023 | Jan. 02, 2022 | Sep. 30, 2022 | Dec. 31, 2021 | Nov. 30, 2021
Middlesex Water [Member] |  |  |  |  |  |
Rate and Regulatory Matters (Details) [Line Items] |  |  |  |  |  |
Escrow account |  |  |  | $ 1.7 |  |
Maturity Less than 30 Days [Member] | Middlesex Water Company [Member] |  |  |  |  |  |
Rate and Regulatory Matters (Details) [Line Items] |  |  |  |  |  |
Escrow account |  |  |  |  |  | $ 1.7
New Jersey Board of Public Utilities [Member] | Middlesex Water [Member] |  |  |  |  |  |
Rate and Regulatory Matters (Details) [Line Items] |  |  |  |  |  |
Approved increase in annual operating revenues |  | $ 7.0 | $ 20.7 | $ 2.7 | $ 27.7 |
Subsequent Event [Member] | New Jersey Board of Public Utilities [Member] | Pinelands [Member] |  |  |  |  |  |
Rate and Regulatory Matters (Details) [Line Items] |  |  |  |  |  |
Approved increase in annual operating revenues | $ 1.0 |  |  |  |  |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 440 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480327/954-440-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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