Income (loss) per common share (Tables)

12 Months Ended

Dec. 31, 2018

Basic and diluted income (loss) per share for the years ended December 31, 2018 and 2017, respectively, was as follows:



	2018			2017
Net income (loss) attributable to stockholders	$	(5,708,532	)	$	47,436
Weighted average shares outstanding - Basic	24,815,926			23,171,033
Basic income (loss) per share	$	(0.23	)	$	—
Weighted average shares outstanding - Diluted	24,815,926			23,342,627
Diluted income (loss) per share	$	(0.23	)	$	—

Anti-dilutive shares underlying stock options outstanding	144,077			441,356