Contingencies and Gain on Sale of Assets Loss Contingencies Number of Customer Served (Details)	Jun. 08, 2017 USD ($)
Ojai Water System
Loss Contingencies [Line Items]
Loss contingency number of customers served	2,900

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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