Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2013
Finite-Lived Intangible Assets, Net [Abstract]  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
The Company’s intangible assets and accumulated amortization consisted of the following at December 31, 2013 and 2012:
 
 
 
2013
 
2012
 
 
 
Gross
 
Accumulated
Amortization
 
Net
 
Gross
 
Accumulated
Amortization
 
Net
 
Patent asset
 
$
1,539,349
 
$
(401,648)
 
$
1,137,701
 
$
1,121,839
 
$
(314,482)
 
$
807,357