XML 54 R30.htm IDEA: XBRL DOCUMENT
v3.25.3

Note 2 - Revenue (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2025
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | 2025 |
|  | Gas utility |  |  | Non utility |  |  | Total operating revenues |
Natural Gas (Billed and Unbilled): |  |  |  |  |  |  |  |  |  |  |  |
Residential |  | $ | 54,093,809 |  |  | $ | — |  |  | $ | 54,093,809 |
Commercial |  |  | 33,035,454 |  |  |  | — |  |  |  | 33,035,454 |
Transportation and Interruptible |  |  | 5,871,389 |  |  |  | — |  |  |  | 5,871,389 |
Other |  |  | 791,194 |  |  |  | 102,269 |  |  |  | 893,463 |
Total contracts with customers |  |  | 93,791,846 |  |  |  | 102,269 |  |  |  | 93,894,115 |
Alternative revenue programs |  |  | 1,440,097 |  |  |  | — |  |  |  | 1,440,097 |
Total operating revenues |  | $ | 95,231,943 |  |  | $ | 102,269 |  |  | $ | 95,334,212 |
|  | 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 |
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, 2024 |  | $ | 3,080,140 |  |  | $ | 1,294,798 |  |  | $ | 1,915,859 |  |  | $ | 1,488,113 |
September 30, 2025 |  |  | 3,354,154 |  |  |  | 1,373,512 |  |  |  | 1,891,161 |  |  |  | 1,537,311 |
Increase (decrease) |  | $ | 274,014 |  |  | $ | 78,714 |  |  | $ | (24,698 | ) |  | $ | 49,198 |

X
- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration