Rate and Regulatory Matters (Details) - Tidewater Utilities Inc [Member] $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Regulatory Liabilities [Line Items]
Originally filed increase in annual operating revenue	$ 1,200
Projected annual revenue	$ 400

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.

No definition available.

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