Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Statements of Cash Flows [Abstract] | ||
| Utility plant additions, debt portion of allowance for funds used during construction | $ 339 | $ 210 |
| Accounts payable for construction of utility plant | $ 6,386 | $ 5,016 |