Regulatory Assets and Liabilities (Schedule of Regulatory Assets) (Details) - USD ($) |
Dec. 31, 2019 |
Sep. 30, 2019 |
---|---|---|
Regulatory Assets [Line Items] | ||
Current regulatory assets | $ 1,453,285 | $ 1,521,939 |
Utility property in service, other | 11,945 | 11,945 |
Noncurrent regulatory assets | 11,807,353 | 12,178,853 |
Total regulatory assets | 13,272,583 | 13,712,737 |
WNA | ||
Regulatory Assets [Line Items] | ||
Current regulatory assets | 736,156 | 569,558 |
ESAC Assets | ||
Regulatory Assets [Line Items] | ||
Current regulatory assets | 180,809 | 265,392 |
Noncurrent regulatory assets | 416,676 | 756,803 |
Accrued pension and postretirement medical | ||
Regulatory Assets [Line Items] | ||
Current regulatory assets | 452,005 | 602,674 |
Noncurrent regulatory assets | 9,414,695 | 9,414,695 |
Other deferred expenses | ||
Regulatory Assets [Line Items] | ||
Current regulatory assets | 84,315 | 84,315 |
Noncurrent regulatory assets | 291,721 | 294,547 |
Premium on early retirement of debt | ||
Regulatory Assets [Line Items] | ||
Noncurrent regulatory assets | $ 1,684,261 | $ 1,712,808 |