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Note 16 - Regulatory Assets and Liabilities - Schedule of Regulatory Liabilities (Details) - USD ($) | Mar. 31, 2022 | Sep. 30, 2021
--- | --- | ---
Regulatory liabilities | $ 3,195,059 | $ 329,959
Asset retirement obligations | 7,876,084 | 7,628,958
Regulatory cost of retirement obligations | 14,126,243 | 13,640,567
Regulatory Liability, Noncurrent | 12,706,518 | 12,891,242
Total non-current | 34,708,845 | 34,160,767
Total regulatory liabilities | 37,903,904 | 34,490,726
Over-recovery of Gas Cost [Member] |  |
Regulatory liabilities | 98,776 | 0
Revenue Subject to Refund [Member] |  |
Regulatory liabilities | 102,879 | 0
Deferred Income Tax Charge [Member] |  |
Regulatory liabilities | 332,361 | 329,959
Regulatory Liability, Noncurrent | 12,706,518 | 12,891,242
Supplier Refund [Member] |  |
Regulatory liabilities | $ 2,661,043 | $ 0

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- Definition The amount of regulatory liabilities and asset retirement obligations classified as noncurrent. + References No definition available. + Details
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- Definition Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 405 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394 + Details
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- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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