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Commitments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) ServiceLine	Dec. 31, 2022 USD ($)
Commitments [Abstract]
Capital expenditures committed	$ 39,626
Armor and Replace Spillway of Lake Williams Dam [Member]
Commitments [Abstract]
Remaining committed capital expenditures to be incurred	$ 14,001
Customer-Owned Lead Service Lines [Member]
Commitments [Abstract]
Number of lead customer-owned service lines to be replaced annually | ServiceLine	400
Term of tariff modification to replace customer-owned lead service lines	9 years
Recovery period of regulatory asset	4 years
Costs incurred to replace customer-owned lead service lines	$ 1,589	$ 1,518
Costs to be incurred to replace customer-owned lead service lines	$ 1,800

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Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

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-Topic 942
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-Name Accounting Standards Codification
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Remaining recovery period of regulatory assets for which no return on investment during recovery period is provided, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of costs incurred to date for replacing all of the remaining customer-owned lead service lines connected to company-owned lead service lines under a four-year tariff modification.

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Amount of expected cost remaining for replacing all of the remaining customer-owned lead service lines connected to company-owned lead service lines under a nine-year tariff modification.

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Number of lead customer-owned service lines to be replaced annually whenever they are discovered.

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Term of consent order agreement with the Pennsylvania Department of Environmental Protection involving the replacement of lead customer-owned service lines regardless of material used for company-owned service lines, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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