Note 3 - Notes Receivable (Details Textual) - USD ($)	1 Months Ended
Feb. 28, 2021	Sep. 30, 2022
Financing Receivable, after Allowance for Credit Loss, Current, Total		$ 202,000
Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total		$ 9,000
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member]
Payments to Acquire Notes Receivable	$ 550,000
Notes Receivable, Stated Interest Rate	4.60%

Amortized cost, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Name:	us-gaap_NotesAndLoansReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant