Note 5 - Accounts Payable and Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	2019		2018
Trade payables	$	1,565,198	$	2,105,814
Distributors' commissions		891,492		1,030,948
Sales taxes		139,542		195,802
Deferred revenue		322,261		337,234
Payroll and payroll taxes		212,716		210,288
	$	3,131,209	$	3,880,086