Net Loss Per Common Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

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

Diluted net loss per common share includes the weighted average dilutive effect of stock options and warrants. Potential common shares outstanding as of June 30, 2015 and 2014:

	June 30, 2015		June 30, 2014
Warrants		3,303,000		3,224,000
Options		1,547,000		2,579,000