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Acquisitions (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 14, 2020 Customer	Apr. 09, 2020 Customer	Aug. 29, 2019 Customer
Acquisitions [Abstract]
Purchase price	$ 1,176	$ 2,112
Acquisition adjustment	(3,707)	(3,318)
Wastewater Collection Assets of Jacobus Borough Sewer Authority [Member]
Acquisitions [Abstract]
Number of customers acquired | Customer					700
Purchase price		2,112
Acquisition adjustment		$ (271)
Wastewater Collection and Treatment Assets of Felton Borough [Member]
Acquisitions [Abstract]
Number of customers acquired | Customer				130
Purchase price	914
Acquisition adjustment	295
Wastewater Collection and Treatment Assets of Letterkenny Township Municipal Authority [Member]
Acquisitions [Abstract]
Number of customers acquired | Customer			180
Purchase price	262
Acquisition adjustment	$ (751)

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- Definition

The cash outflow for the purchase of waste water systems which includes the waste treatment and disposal facility and equipment to households and industry.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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- Definition

Amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities.

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- Definition

The number of new customers acquired by the entity.

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