Note 3 - Earnings (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

Anti-dilutive security	December 31, 2018		December 31, 2017
Employee stock options		725,000		4,225,000
Warrants		12,550,000		27,020,000
Convertible notes		-0-		11,980,000
Shares issuable for accrued interest		115,677		118,224
Total		13,390,677		43,343,224

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	For the year ended
	December 31, 2018								December 31, 2017
	Income/(loss)			Shares		Per-share			Income/(loss)		Shares		Per-share
	numerator			denominator		amount			numerator		denominator		amount
Basic EPS	$	3,687,965			150,832,451	$	0.02		$	2,967,218		147,865,246	$	0.02
Effect of dilutive securities		(280,117	)		13,786,417		(0.02	)		4,766		312,738		-0-
Diluted EPS	$	3,407,848			164,618,868	$	0.02		$	2,971,984		148,177,984	$	0.02