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Note 4 - Right-of-use Lease With Related Party (Tables) | 6 Months Ended
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Mar. 31, 2025
Notes Tables |
Lease, Cost [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 31, 2025 |  |  | March 31, 2024 |  |  | March 31, 2025 |  |  | March 31, 2024 |
Right-of-use lease cost, included in general and administrative on the Statements of Operations |  | $ | - |  |  | $ | 19,793 |  |  | $ | 17,885 |  |  | $ | 39,909 |
Lease Term and Discount Rate [Table Text Block] |
|  | March 31, 2025 |  |  | September 30, 2024 |
Remaining lease term (months): |  |  | 0 |  |  |  | 3 |
Estimated incremental borrowing rate: |  |  | 9.2 | % |  |  | 9.2 | %
Leases, Cash Flow Information [Table Text Block] |
|  | Six Months Ended |
|  | March 31, 2025 |  |  | March 31, 2024 |
Cash paid for amounts included in the measurement of right-of-use lease liabilities, included in accounts payable and accrued liabilities on the Statements of Cash Flow. |  | $ | 17,885 |  |  | $ | 38,907 |

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- Definition Tabular disclosure of lessee's lease terms and discount rate. + References No definition available. + Details
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Namespace Prefix: | edsa_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of cash flow information for leases. + References No definition available. + Details
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Namespace Prefix: | edsa_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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