REGULATORY LIABILITIES (Details) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) Installment	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Jan. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)
REGULATORY LIABILITIES [Abstract]
Litigation settlement amount		$ 10,000
Litigation settlement amount received	$ 2,500
Litigation settlement, remaining amount		$ 7,500
Number of installments | Installment		3
Federal corporate tax rate		21.00%	34.00%
Decrease in the net deferred income tax liability						$ 24,300
Regulatory Liabilities [Abstract]
Regulatory liabilities		$ 31,550	$ 22,800	$ 21,260
DEPSC [Member]
Regulatory Liabilities [Abstract]
Regulatory liabilities					$ 22,200
Regulatory liabilities, amortization period		49 years 6 months
MDPSC [Member]
Regulatory Liabilities [Abstract]
Regulatory liabilities		$ 600
Utility Plant Retirement Cost Obligation [Member]
Regulatory Liabilities [Abstract]
Regulatory liabilities		156		149
Deferred Settlement Refunds [Member]
Regulatory Liabilities [Abstract]
Regulatory liabilities		10,042		0
Deferred Income Taxes [Member]
Regulatory Liabilities [Abstract]
Regulatory liabilities		$ 21,352		$ 21,111