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Property, Plant and Equipment - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Accumulated amortization for assets capitalized under capital leases $ 714,000 $ 567,000
Interest cost capitalized in PP&E $ 3,986,000 $ 398,000
Minimum [Member] | Chemical processing plants and plant infrastructure [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 15 years  
Minimum [Member] | Production, fabrication, and assembly equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 7 years  
Minimum [Member] | Processing plant components [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 3 years  
Minimum [Member] | Trucks, automobiles, trailers, and other rolling stock [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 3 years  
Maximum [Member] | Chemical processing plants and plant infrastructure [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 30 years  
Maximum [Member] | Production, fabrication, and assembly equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 15 years  
Maximum [Member] | Processing plant components [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 10 years  
Maximum [Member] | Trucks, automobiles, trailers, and other rolling stock [Member]
    
Property, Plant and Equipment [Line Items]    
Useful lives in years 7 years