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Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
CASH FLOWS FROM INVESTING ACTIVITIES:    
Utility plant additions, debt portion of allowance for funds used during construction $ 1,522 $ 504
Supplemental disclosure of non-cash investing and financing activities:    
Accounts payable for construction of utility plant $ 7,017 $ 5,536