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Note 7 - Accrued Expenses (Details Textual) - USD ($)						1 Months Ended
Note 7 - Accrued Expenses (Details Textual) - USD ($)	Dec. 30, 2020	Sep. 25, 2020	Aug. 21, 2020	Aug. 11, 2020	Apr. 28, 2020	Jan. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020
Accrued Liabilities, Current, Total							$ 3,082,697		$ 4,604,097
Other Accrued Liabilities, Current							249,783		2,186,197
RBL Capital Group, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)	200,000
Esousa Holdings LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)		50,000	45,654	66,190	65,862	200,000
Tranche from ESOUSA Agreement [Member]
Other Accrued Liabilities, Current							145,000	$ 145,000		$ 145,000
Tranche from ESOUSA Agreement [Member] \| RBL Capital Group, LLC [Member]
Other Accrued Liabilities, Current									2,000,000.0
Chief Executive Officer [Member]
Accrued Bonuses							1,500,000		1,300,000
Employees [Member]
Accrued Bonuses							$ 410,000		$ 386,000