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v3.25.3

Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Total contracts with customers | $ 93,894,115 | $ 80,533,657
Alternative revenue programs | 1,440,097 | 4,107,575
Revenue | 95,334,212 | 84,641,232
Oil and Gas [Member] | Residential [Member] |  |
Total contracts with customers | 54,093,809 | 46,472,676
Oil and Gas [Member] | Commercial [Member] |  |
Total contracts with customers | 33,035,454 | 27,659,507
Oil and Gas [Member] | Transportation and Interruptible [Member] |  |
Total contracts with customers | 5,871,389 | 5,414,157
Product and Service, Other [Member] |  |
Total contracts with customers | 893,463 | 987,317
Gas Utility [Member] |  |
Total contracts with customers | 93,791,846 | 80,425,526
Alternative revenue programs | 1,440,097 | 4,107,575
Revenue | 95,231,943 | 84,533,101
Gas Utility [Member] | Oil and Gas [Member] | Residential [Member] |  |
Total contracts with customers | 54,093,809 | 46,472,676
Gas Utility [Member] | Oil and Gas [Member] | Commercial [Member] |  |
Total contracts with customers | 33,035,454 | 27,659,507
Gas Utility [Member] | Oil and Gas [Member] | Transportation and Interruptible [Member] |  |
Total contracts with customers | 5,871,389 | 5,414,157
Gas Utility [Member] | Product and Service, Other [Member] |  |
Total contracts with customers | 791,194 | 879,186
Non-utility [Member] |  |
Total contracts with customers | 102,269 | 108,131
Alternative revenue programs | 0 | 0
Revenue | 102,269 | 108,131
Non-utility [Member] | Oil and Gas [Member] | Residential [Member] |  |
Total contracts with customers | 0 | 0
Non-utility [Member] | Oil and Gas [Member] | Commercial [Member] |  |
Total contracts with customers | 0 | 0
Non-utility [Member] | Oil and Gas [Member] | Transportation and Interruptible [Member] |  |
Total contracts with customers | 0 | 0
Non-utility [Member] | Product and Service, Other [Member] |  |
Total contracts with customers | $ 102,269 | $ 108,131

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