Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Tables)

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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2015
Fair Value Disclosures [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
The following table presents the activity for those items measured at fair value on a recurring basis using Level 3 inputs for the six months ended June 30, 2014:
 
 
 
Derivative
 
 
 
Instruments - Stock
 
 
 
Purchase Warrants
 
Balance at December 31, 2013
 
$
1,417,527
 
Change in fair value
 
 
334,133
 
Exercise of underlying warrants
 
 
(1,751,660)
 
Balance at June 30, 2014
 
$
-