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Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
CASH FLOWS FROM INVESTING ACTIVITIES:    
Utility plant additions, debt portion of allowance for funds used during construction $ 418 $ 165
Supplemental disclosure of non-cash investing and financing activities:    
Accounts payable for construction of utility plant $ 7,764 $ 3,715