Note 7 - Commitments and Contingencies (Details Textual) - Chief Executive Officer [Member] - USD ($)			1 Months Ended
	Aug. 30, 2021	Aug. 25, 2021	Aug. 31, 2021
Salary and Wage, Officer, Excluding Cost of Good and Service Sold		$ 500,000
The 2016 Employee Equity Compensation Restricted Stock Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	90,000		90,000
The 2016 Employee Equity Compensation Restricted Stock Plan [Member] | Performance Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	510,000		510,000