Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member] - Former Chief Executive Officer [Member]	Oct. 29, 2021 USD ($)
Accrued Bonuses, Current	$ 300,000
Bonuses Payable on November 1, 2021 [Member]
Accrued Bonuses, Current	75,000
Bonuses Payable on December 1, 2021 [Member]
Accrued Bonuses, Current	75,000
Bonuses Payable on January 1, 2022 [Member]
Accrued Bonuses, Current	75,000
Bonuses Payable on February 1, 2022 [Member]
Accrued Bonuses, Current	$ 75,000

Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765

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Balance Type:	credit
Period Type:	instant