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Property, Plant and Equipment (Details) (USD $)
Jun. 30, 2014
Dec. 31, 2013
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross $ 229,481,210 $ 217,100,553
Less: accumulated depreciation and amortization (42,402,936) (38,565,294)
Property, Plant and Equipment, net 187,078,274 178,535,259
Land use rights [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 7,710,296 7,761,511
Building and improvements [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 22,258,982 22,406,836
Machinery and equipment [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 124,006,036 121,088,942
Vehicles [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross 702,666 683,051
Construction in progress [Member]
    
Property, Plant, and Equipment:    
Property, Plant, and Equipment, Gross $ 74,803,230 $ 65,160,213