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Organization and Operations (Details)	12 Months Ended
	Dec. 31, 2023 entity subsidiary
Public Utilities, General Disclosures [Line Items]
Number of variable interest entities | entity	1
SJWC
Public Utilities, General Disclosures [Line Items]
Number of subsidiaries that are primary beneficiaries | subsidiary	1
Variable Interest Entity, Not Primary Beneficiary
Public Utilities, General Disclosures [Line Items]
Ownership percentage in Acequia Water Supply Corporation	25.00%

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-5A

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