REGULATORY ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
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	$ 7,239	$ 7,274
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	$ 460	465
Deferred Contract Costs and Other [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	255	227
Debt Related Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	4,593	4,682
Goodwill [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	264	266
Rate Case Studies [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	99	57
Deferred Costs Affiliated Interest Agreement [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	1,114	1,114
Deferred Acquisition and Franchise Costs [Member]
Regulatory assets net of amortization, comprise [Abstract]
Regulatory assets, net	$ 454	$ 463