Note 4 - Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

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

	March 31, 2019			December 31, 2018
Accounts receivable	$	1,092,617		$	39,769
Provision for doubtful accounts		(27,666	)		(27,666	)
Net accounts receivable	$	1,064,951		$	12,103