Organization and Operations (Details)	12 Months Ended
	Dec. 31, 2025 subsidiary entity
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%