Net Income / (Loss) Per Common Share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

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

Potential common shares outstanding as of March 31, 2016 and 2015:

	March 31, 2016		March 31, 2015
Warrants		2,385,000		3,303,000
Options		2,185,000		1,248,000
		4,570,000		4,551,000