Earnings (Loss) Per Common Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

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

Basic earnings (loss) per common share is computed by dividing the net income or loss by the basic weighted-average number of shares of common stock outstanding during each period presented. Diluted earnings per share is computed by dividing the net income or loss by the total of the basic weighted-average number of shares of common stock outstanding plus the additional dilutive securities that could be exercised or converted into common shares during each period presented less the amount of shares that could be repurchased using the proceeds from the exercises.

	Three Months Ended						Nine Months Ended
	September 30, 2017			September 30, 2016			September 30, 2017			September 30, 2016
Net loss	$	(558,805	)	$	(1,511,603	)	$	(4,724,623	)	$	(5,730,568	)
Weighted average shares outstanding - basic and diluted	5,702,297			5,420,020			5,659,423			5,357,119
Basic and diluted loss per common share	$	(0.10	)	$	(0.28	)	$	(0.83	)	$	(1.07	)

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

The Company excluded the following weighted average items from the above computation of diluted loss per common share as their effect would be anti-dilutive:

	Three Months Ended		Nine Months Ended
	September 30, 2017	September 30, 2016	September 30, 2017	September 30, 2016
Stock options	993,546	904,706	979,775	874,363
Warrants	520,147	557,423	537,039	550,002
Restricted stock units	—	—	—	—
Total excluded shares	1,513,693	1,462,129	1,516,814	1,424,365