Note 4 - Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	June 30, 2020			December 31, 2019
Accounts receivable	$	1,269,656		$	2,446,486
Expected credit losses		(53,633	)		(53,708	)
Net accounts receivable	$	1,216,023		$	2,392,778