REGULATORY ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Amortization period of other regulatory expense [Abstract]
Deferred contract costs and other	5 years
Rate case studies	5 years
Deferred costs affiliated interest agreement	20 years
Goodwill	50 years
Deferred acquisition costs	20 years
Franchise costs	80 years
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 7,212	$ 7,289
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	3 years
Maryland [Member]
Amortization period of other regulatory expense [Abstract]
Regulatory rate proceedings	5 years
Deferred Contract Costs and Other [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 192	209
Rate Case Studies [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	129	136
Rate Proceedings [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	450	385
Deferred Income Taxes [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	439	444
Debt Related Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	4,234	4,322
Deferred Costs Affiliated Interest Agreement [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	1,096	1,110
Goodwill [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	256	258
Deferred Acquisition and Franchise Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 416	$ 425