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Property And Equipment (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 30,638,602 $ 29,243,398
Less accumulated depreciation 15,651,826 14,044,576
Total property and equipment 14,986,776 15,198,822
Depreciation expense 1,629,594 1,552,961
Land [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,178,160 1,178,160
Building And Improvements [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 11,904,919 11,633,077
Machinery And Equipment [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 15,185,204 14,697,024
Office Equipment [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 411,773 383,099
Vehicles [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,346,078 1,334,628
Construction in Progress [Member]
   
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 612,468 $ 17,410