Note 4 - Rates and Regulatory Matters (Details Textual) - USD ($) |
Jul. 01, 2026 |
Jun. 30, 2026 |
May 29, 2026 |
Dec. 02, 2025 |
|---|---|---|---|---|
| Public Utilities, Requested Rate Increase (Decrease), Amount | $ 4,300,000 | |||
| RNG Rider Revenue Requirement | $ 1,760,000 | |||
| RNG Rider Impact to Customers | $ 708,000 | |||
| SAVE Annual Revenues | $ 3,790,000 | |||
| Recovery Costs, SAVE Eligible Expenses | $ 9,260,000 | |||
| Subsequent Event [Member] | ||||
| Public Utilities, Approved Rate Increase (Decrease), Amount | $ 3,850,000 | |||
| Public Utilities, Approved Equity Capital Structure, Percentage | 59.00% | |||
| Public Utilities, Approved Return on Equity, Percentage | 9.90% |