Schedule of allowance for credit losses for deposit and other receivables (Details) - Deposit And Other Receivables [Member] - USD ($)	9 Months Ended	12 Months Ended
Jun. 30, 2026	Sep. 30, 2025
Cash and Cash Equivalents [Line Items]
Allowance for credit losses for deposit and other receivables, Beginning balance	$ 116	$ 116
Current year addition
Allowance for credit losses for deposit and other receivables, Ending balance	$ 116	$ 116

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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+ Details