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Statements of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
CASH FLOWS FROM INVESTING ACTIVITIES:    
Utility plant additions, debt portion of allowance for funds used during construction $ 682 $ 296
Supplemental schedule of non-cash investing and financing activities:    
Accounts payable for construction of utility plant $ 2,572 3,022
Contributions in aid of construction recorded as part of the Felton Borough acquisition   $ 1,024