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Property, Plant and Equipment - Summary of Property, Plant and Equipment Balances (Detail) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total $ 12,424,560 $ 15,595,756
Less accumulated depreciation (6,983,231) (10,408,798)
Property, plant and equipment, net 5,441,329 5,186,958
Building and improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 3,601,368 6,794,556
Machinery and equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 8,490,361 8,161,291
Furniture and fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total $ 332,831 $ 639,909