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REGULATORY ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Amortization period of other regulatory expense [Abstract]
Deferred contract costs and other	5 years
Rate case studies	5 years
Goodwill	50 years
Deferred acquisition costs	20 years
Franchise costs	80 years
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 6,362	$ 6,321
Maximum [Member]
Amortization period of other regulatory expense [Abstract]
Debt related cost	30 years
Minimum [Member]
Amortization period of other regulatory expense [Abstract]
Debt related cost	15 years
Delaware [Member]
Amortization period of other regulatory expense [Abstract]
Regulatory rate proceedings	2 years 6 months
Maryland [Member]
Amortization period of other regulatory expense [Abstract]
Regulatory rate proceedings	5 years
Deferred Income Taxes [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 481	355
Deferred Contract Costs and Other [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	273	288
Debt Related Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	4,844	4,902
Goodwill [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	271	273
Deferred Acquisition and Franchise Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 493	$ 503

X

- Definition

Period over which regulatory noncurrent assets for goodwill is amortized on a straight-line basis.

+ References

No definition available.

+ Details

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X

- Definition

Represents amortization period of debt related cost.

+ References

No definition available.

+ Details

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X

- Definition

Period over which regulatory noncurrent asset for deferred acquisition costs amortized.

+ References

No definition available.

+ Details

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X

- Definition

Represents amortization period of deferred contract costs and other.

+ References

No definition available.

+ Details

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X

- Definition

Period over which regulatory noncurrent asset for deferred franchise costs amortized.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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X

- Definition

Description of the amortization period for recovery of the individual regulatory noncurrent assets related to other expenses in a schedule of regulatory noncurrent assets.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

+ Details

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- Details

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- Details

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- Details

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- Details

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