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Property, Plant and Equipment (Details) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross $ 218,247,217 $ 217,100,553
Less accumulated depreciation and amortization (40,285,715) (38,565,294)
Property, Plant and Equipment, net 177,961,502 178,535,259
Land use rights [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 7,697,285 7,761,511
Building and improvements [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 22,221,421 22,406,836
Machinery and equipment [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 120,086,941 121,088,942
Vehicles [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 682,066 683,051
Construction in progress [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross $ 67,559,504 $ 65,160,213