Note 10 - Payroll Protection Program (PPP) Loan (Details Textual) - USD ($)	1 Months Ended	3 Months Ended	10 Months Ended
Feb. 28, 2021	May 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Feb. 28, 2021
Proceeds from Notes Payable, Total			$ 0	$ 381,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Notes Payable, Total	$ 332,542	$ 381,000			$ 713,542

The cash inflow from a borrowing supported by a written promise to pay an obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

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