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

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

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

Diluted net income / (loss) per common share includes the weighted average dilutive effect of stock options and warrants. Potential common shares outstanding as of March 31, 2015 and 2014:

	March 31, 2015		March 31, 2014
Warrants		3,303,000		3,303,000
Options		1,248,000		3,206,000