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PROPERTY, PLANT, AND EQUIPMENT (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Property, plant, and equipment      
Property, plant and equipment, gross $ 33,554,176 $ 32,089,164  
Accumulated depreciation (22,086,115) (21,236,311)  
Property, plant and equipment, net 11,468,061 10,852,853  
Depreciation expense 849,804 1,065,248 $ 1,272,770
Land      
Property, plant, and equipment      
Property, plant and equipment, gross 261,893 261,893  
Buildings and building improvements      
Property, plant, and equipment      
Property, plant and equipment, gross 11,485,797 11,414,961  
Production equipment      
Property, plant, and equipment      
Property, plant and equipment, gross 15,648,515 15,609,824  
Office furniture and equipment      
Property, plant, and equipment      
Property, plant and equipment, gross 3,316,390 3,147,786  
Construction in Progress      
Property, plant, and equipment      
Property, plant and equipment, gross 2,739,260 1,552,379  
Automobiles      
Property, plant, and equipment      
Property, plant and equipment, gross $ 102,321 $ 102,321