Note 7 - Payroll Liabilities - Schedule of Payroll Liabilities (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Accrued bonuses	$ 194,497	$ 689,635
Accrued vacation	184,273	171,112
Accrued payroll	111,231	102,918
Total payroll liabilities	$ 490,001	$ 963,665