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Property, Plant and Equipment - Additional Information (Detail) (USD $) | 12 Months Ended
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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 |

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- Definition The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 2) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Definition Amount of interest capitalized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Allowance for Funds Used during Construction -URI http://asc.fasb.org/extlink&oid=6504829 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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- Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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