Net Loss Per Common Share (Tables)

6 Months Ended

Jun. 30, 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 June 30,					Six Months Ended June 30,
	2019			2018		2019			2018
Net income (loss) applicable to common stockholders	$	(3,362,191	)	$	573,928	$	(1,311,684	)	$	1,740,180
Weighted average number of common shares outstanding, basic	9,048,235			7,330,479		8,396,249			6,839,778
Dilutive convertible preferred stock	—			6,584,674		—			6,980,585
Weighted average number of common shares outstanding, dilutive	9,048,235			13,915,153		8,396,249			13,820,363
Net income (loss) per common share applicable to common stockholders, basic	$	(0.37	)	$	0.08	$	(0.16	)	$	0.25
Net income (loss) per common share applicable to common stockholders, diluted	$	(0.37	)	$	0.04	$	(0.16	)	$	0.13

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

	Quarters Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Options	482,656	466,025	485,559	401,778
Warrants	459,375	459,375	459,375	459,375
Convertible preferred stock	4,915,974	—	5,567,960	—
Total	5,858,005	925,400	6,512,894	861,153