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3. INVENTORIES (Tables)
 3 Months Ended
Jun. 30, 2017
Inventory Related Text [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories, net of reserves, are comprised of the following:

   
June 30,
  
December 31,
 June 30, 
   
2017
  
2016
  2016
             
Raw materials   $14,083,099    $14,260,416    $19,499,464 
Work-in-process    983,974     751,519     1,586,091 
Finished goods    61,247,648     54,156,507     66,470,401 
  Total   $76,314,721    $69,168,442    $87,555,956