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Note 2 - Revenue (Tables) | 12 Months Ended
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Sep. 30, 2024
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | 2024 |
|  | Gas utility |  |  | Non utility |  |  | Total operating revenues |
Natural Gas (Billed and Unbilled): |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 46,472,676 |  |  | $ | — |  |  | $ | 46,472,676 |
Commercial |  |  | 27,659,507 |  |  |  | — |  |  |  | 27,659,507 |
Transportation and Interruptible |  |  | 5,414,157 |  |  |  | — |  |  |  | 5,414,157 |
Other |  |  | 879,186 |  |  |  | 108,131 |  |  |  | 987,317 |
Total contracts with customers |  |  | 80,425,526 |  |  |  | 108,131 |  |  |  | 80,533,657 |
Alternative revenue programs |  |  | 4,107,575 |  |  |  | — |  |  |  | 4,107,575 |
Total operating revenues |  | $ | 84,533,101 |  |  | $ | 108,131 |  |  | $ | 84,641,232 |
|  | 2023 |
|  | Gas utility |  |  | Non utility |  |  | Total operating revenues |
Natural Gas (Billed and Unbilled): |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 54,342,435 |  |  | $ | — |  |  | $ | 54,342,435 |
Commercial |  |  | 33,083,485 |  |  |  | — |  |  |  | 33,083,485 |
Transportation and Interruptible |  |  | 5,730,726 |  |  |  | — |  |  |  | 5,730,726 |
Other |  |  | 1,122,710 |  |  |  | 114,458 |  |  |  | 1,237,168 |
Total contracts with customers |  |  | 94,279,356 |  |  |  | 114,458 |  |  |  | 94,393,814 |
Alternative revenue programs |  |  | 3,045,951 |  |  |  | — |  |  |  | 3,045,951 |
Total operating revenues |  | $ | 97,325,307 |  |  | $ | 114,458 |  |  | $ | 97,439,765 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | Current Assets |  |  | Current Liabilities |
|  | Trade accounts receivable (1) |  |  | Unbilled revenue (1) |  |  | Customer credit balances |  |  | Customer deposits |
September 30, 2023 |  | $ | 2,782,025 |  |  | $ | 1,240,097 |  |  | $ | 1,972,132 |  |  | $ | 1,476,321 |
September 30, 2024 |  |  | 3,080,140 |  |  |  | 1,294,798 |  |  |  | 1,915,859 |  |  |  | 1,488,113 |
Increase (decrease) |  | $ | 298,115 |  |  | $ | 54,701 |  |  | $ | (56,273 | ) |  | $ | 11,792 |

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