Note 8 - Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

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

	Three Month Period Ended					Nine Month Period Ended
	September 30,					September 30,
	2018		2017			2018		2017
Numerator:
Net income (loss) attributable to common stockholders	$	1,151,094	$	(424,968	)	$	2,094,246	$	(2,063,470	)
Denominator:
Weighted average basic shares outstanding		17,273,412		13,238,248			15,529,026		13,102,238
Effect of dilutive securities		6,383,221		—			5,522,193		—
Weighted average diluted shares		23,656,633		13,238,248			21,051,219		13,102,238
Basic earnings per share	$	0.07	$	(0.03	)	$	0.13	$	(0.16	)
Diluted earnings per share	$	0.05	$	(0.03	)	$	0.10	$	(0.16	)