Income Taxes (Reconciliation of Income Tax Expense Based on Federal Statutory Rate) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Sep. 30, 2018 |
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| Income Tax Disclosure [Abstract] | |||||
| Income before income taxes | $ 6,130,718 | $ 4,876,360 | $ 9,267,093 | $ 8,071,518 | |
| Corporate federal tax rate | 21.00% | 24.30% | 21.00% | 24.30% | 24.30% |
| Income tax expense computed at the federal statutory rate | $ 1,287,451 | $ 1,184,955 | $ 1,946,090 | $ 1,961,379 | |
| State income taxes, net of federal tax benefit | 290,481 | 222,127 | 441,070 | 368,214 | |
| Net amortization of excess deferred taxes on regulated operations | (86,208) | 0 | (172,417) | 0 | |
| Revaluation of unregulated deferred taxes | 0 | 0 | 0 | 206,830 | |
| Other, net | (31,096) | 3,349 | (51,902) | 9,704 | |
| Total income tax expense | $ 1,460,628 | $ 1,410,431 | $ 2,162,841 | $ 2,546,127 | |
| Effective tax rate | 23.80% | 28.90% | 23.30% | 31.50% | |
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- Definition Net Amortization Of Excess Deferred Taxes On Regulated Operations No definition available.
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- Definition Amount of income tax expense (benefit) for remeasurement of deferred tax on unregulated operations from change in tax rate pursuant to Tax Cuts and Jobs Act. No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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