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Inventories, Net (Tables)
 9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
 
 
September 30,
 
December 31,
 
 
 
2017
 
2016
 
Raw materials
 
$
3,485,026
 
$
3,310,310
 
Work in process
 
 
2,873,071
 
 
1,942,600
 
Finished goods
 
 
13,881,057
 
 
13,889,328
 
Allowance for excess quantities
 
 
(891,046)
 
 
(794,227)
 
Total inventories
 
$
19,348,108
 
$
18,348,011