Note 4 - Accrued Expenses (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

	September 30, 2021		December 31, 2020
Accrued salaries	$	11,212	$	279,696
Other accrued expenses		35,000		79,585
Total accrued expenses	$	46,212	$	359,281

	2020		2019
Accrued salaries and directors’ fees	$	279,696	$	1,732,702
Other accrued expenses		79,585		118,338
Total accrued expenses	$	359,281	$	1,851,040