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Regulatory Assets and Liabilities (Schedule of Regulatory Assets) (Details) - USD ($) | Mar. 31, 2020 | Sep. 30, 2019
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Regulatory Assets [Line Items] |  |
Current regulatory assets | $ 2,953,173 | $ 1,521,939
Utility property in service, other | 11,945 | 11,945
Construction work in progress - AFUDC | 217,147 | 0
Noncurrent regulatory assets | 11,698,969 | 12,178,853
Total regulatory assets | 14,881,234 | 13,712,737
WNA |  |
Regulatory Assets [Line Items] |  |
Current regulatory assets | 2,386,713 | 569,558
ESAC Assets |  |
Regulatory Assets [Line Items] |  |
Current regulatory assets | 180,809 | 265,392
Noncurrent regulatory assets | 371,475 | 756,803
Accrued pension and postretirement medical |  |
Regulatory Assets [Line Items] |  |
Current regulatory assets | 301,336 | 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 | 257,085 | 294,547
Premium on early retirement of debt |  |
Regulatory Assets [Line Items] |  |
Noncurrent regulatory assets | $ 1,655,714 | $ 1,712,808

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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