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v3.20.1

Revenue (Disaggregation of Revenue) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | $ 20,784,502 | $ 25,329,046 | $ 40,506,010 | $ 46,793,254
Revenue reductions (TCJA) |  |  | 0 | (523,881)
Alternative Revenue Programs | 1,653,229 | (54,087) | 1,717,174 | (301,548)
Operating revenues | 22,437,731 | 25,274,959 | 42,223,184 | 46,491,706
Natural Gas [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 12,892,659 | 15,397,504 | 25,177,242 | 28,410,332
Natural Gas [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 6,368,939 | 8,357,598 | 12,102,779 | 15,700,155
Natural Gas [Member] | Industrial and Transportation [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 1,243,426 | 1,249,316 | 2,570,669 | 2,475,364
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 279,478 | 324,628 | 655,320 | 731,284
Gas Utility [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 20,622,490 | 25,112,836 | 40,184,151 | 46,396,878
Revenue reductions (TCJA) |  |  | 0 | (523,881)
Alternative Revenue Programs | 1,653,229 | (54,087) | 1,717,174 | (301,548)
Operating revenues | 22,275,719 | 25,058,749 | 41,901,325 | 46,095,330
Gas Utility [Member] | Natural Gas [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 12,892,659 | 15,397,504 | 25,177,242 | 28,410,332
Gas Utility [Member] | Natural Gas [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 6,368,939 | 8,357,598 | 12,102,779 | 15,700,155
Gas Utility [Member] | Natural Gas [Member] | Industrial and Transportation [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 1,243,426 | 1,249,316 | 2,570,669 | 2,475,364
Gas Utility [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 117,466 | 108,418 | 333,461 | 334,908
Non Utility [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 162,012 | 216,210 | 321,859 | 396,376
Revenue reductions (TCJA) |  |  | 0 | 0
Alternative Revenue Programs | 0 | 0 | 0 | 0
Operating revenues | 162,012 | 216,210 | 321,859 | 396,376
Non Utility [Member] | Natural Gas [Member] | Residential [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 0 | 0 | 0 | 0
Non Utility [Member] | Natural Gas [Member] | Commercial [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 0 | 0 | 0 | 0
Non Utility [Member] | Natural Gas [Member] | Industrial and Transportation [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | 0 | 0 | 0 | 0
Non Utility [Member] | Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total contracts with customers | $ 162,012 | $ 216,210 | $ 321,859 | $ 396,376

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