Leases (Tables)
 12 Months Ended
Dec. 31, 2015
Leases [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Future minimum lease payments under the noncancelable operating leases as of December 31, 2015 are:
 
 
 
Operating
 
 
 
leases
 
Year ending December 31:
 
 
 
 
2016
 
 
371,373
 
2017
 
 
387,119
 
2018
 
 
58,903
 
 
 
 
 
 
Total minimum lease payments
 
$
817,395