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Note 16 - Leases - USD ($) | 6 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Sep. 30, 2023
Assets [Abstract] |  |
Other Assets, Miscellaneous, Noncurrent | $ 570,975 | $ 624,095
Liabilities, Current [Abstract] |  |
Other Liabilities, Current | 31,010 | 30,281
Liabilities, Noncurrent [Abstract] |  |
Liabilities, Other than Long-Term Debt, Noncurrent | $ 45,196,399 | $ 44,233,200
Notes to Financial Statements |  |
Lessee, Operating Leases [Text Block] |
16. | Leases
The Company leases certain assets including office space and land classified as operating leases. The Company determines if an arrangement is a lease at inception of the agreement based on the terms and conditions in the contract. The operating lease ROU assets and operating lease liabilities are recognized as the present value of the future minimum lease payments over the lease term at commencement date. As most of the leases do not provide an implicit rate, the Company uses an estimate of its secured incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The incremental borrowing rate is determined by management aided by inquiries of a third party. Lease expense for minimum lease payments is recognized on a straight-line basis over the term of the agreement. The Company made an accounting policy election that payments under agreements with an initial term of 12 months or less will not be included on the condensed consolidated balance sheet but will be recognized when paid in the consolidated statements of operations. During fiscal 2023, the Company entered into a land lease in conjunction with its RNG facility that has a 20-year term with two five-year renewal options that are not considered part of the ROU asset and liability as the decision to elect said options will be made by the Company in the future. The Company also has three other operating leases with original terms ranging from 3 to 6 years. The operating lease ROU assets of $346,786 are reflected in other non-current assets in the condensed consolidated balance sheets. The current operating lease liabilities of $31,010 and non-current lease liabilities of $319,936 are included in other current liabilities and deferred credits and other non-current liabilities, respectively, in the condensed consolidated balance sheets. The expense components of the Company’s operating leases are included under operations and maintenance expense in the condensed consolidated statements of income and were less than $50,000 for each period presented. Other information related to leases were as follows:
|  |  | Three Months Ended March 31, |
|  | 2024 |  |  | 2023 |
Supplemental Cash Flow Information: |  |  |  |  |  |  |  |
Cash paid on operating leases |  | $ | 5,500 |  |  | $ | 3,300 |
Right of use obtained in exchange for operating lease obligations |  |  | N/A |  |  |  | N/A |
Weighted-average remaining term (in years) |  |  | 17.4 |  |  |  | 17.5 |
Weighted-average discount rate |  |  | 5.65 | % |  |  | 5.65 | %
|  |  | Six Months Ended March 31, |
|  | 2024 |  |  | 2023 |
Supplemental Cash Flow Information: |  |  |  |  |  |  |  |
Cash paid on operating leases |  | $ | 12,266 |  |  | $ | 15,900 |
Right of use obtained in exchange for operating lease obligations |  |  | N/A |  |  |  | N/A |
Weighted-average remaining term (in years) |  |  | 17.4 |  |  |  | 17.5 |
Weighted-average discount rate |  |  | 5.65 | % |  |  | 5.65 | %
On March 31, 2024, the future minimum rental payments under non-cancelable operating leases by fiscal year were as follows:
2024 |  | $ | 36,800 |
2025 |  |  | 43,065 |
2026 |  |  | 30,038 |
2027 |  |  | 30,038 |
2028 |  |  | 26,400 |
Thereafter |  |  | 369,600 |
Total minimum lease payments |  |  | 535,941 |
Less imputed interest |  |  | (184,995 | )
Total |  | $ | 350,946 |

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- Definition Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities. + References No definition available. + Details
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