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Inventories, Net (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Inventory [Line Items]    
Raw materials $ 3,679,604 $ 2,770,636
Work in process 2,387,799 2,198,981
Finished goods 13,647,192 13,723,090
Allowance for excess quantities (763,637) (822,796)
Total inventories $ 18,950,958 $ 17,869,911