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Inventories, Net (Tables)
3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Schedule Of Inventory, Current [Table Text Block]
 
 
March 31,
2016
 
December 31,
2015
 
Raw materials
 
$
3,415,784
 
$
2,770,636
 
Work in process
 
 
2,266,761
 
 
2,198,981
 
Finished goods
 
 
12,895,111
 
 
13,723,090
 
Allowance for excess quantities
 
 
(850,714)
 
 
(822,796)
 
Total inventories
 
$
17,726,942
 
$
17,869,911