Note 4 - Property and Equipment (Details Textual) - USD ($)	3 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Depreciation, Excluding Lessor Asset under Operating Lease	$ 100,112	$ 288,384

Amount, excluding lessor's underlying asset for which right to use has been conveyed to lessee under operating lease, of depreciation expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 13
-URI https://asc.fasb.org/extlink&oid=124258985&loc=SL77919398-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Name:	us-gaap_DepreciationExcludingLessorAssetUnderOperatingLease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration