Net Loss Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]

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

	Quarters Ended March 31,
	2019		2018
Net income applicable to common stockholders	$	2,050,507	$	1,166,252
Weighted average number of common shares outstanding, basic	7,741,463		6,345,719
Dilutive convertible preferred stock	6,222,746		7,380,895
Weighted average number of common shares outstanding, dilutive	13,964,209		13,726,614
Net income per common share applicable to common stockholders, basic	$	0.26	$	0.18
Net income per common share applicable to common stockholders, diluted	$	0.15	$	0.08

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

	Quarters Ended March 31,
	2019	2018
Options	488,494	336,817
Warrants	459,375	459,375
Total	947,869	796,192