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Information Related to Recurring Fair Value Measurement of Derivative Financial Instruments in Our Consolidated Balance Sheet (Detail) - Fair Value, Inputs, Level 2 - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Commodity Derivatives | Cash Flow Hedge | Current Liabilities |  |
Derivatives Fair Value [Line Items] |  |
Liability Derivatives, Fair value | $ (725) |
Net Asset/(Liabilities) | $ (725) |
Currency Related Swap | Not a Hedge |  |
Derivatives Fair Value [Line Items] |  |
Liability Derivatives, Fair value |  | $ (9,164)
Net Asset/(Liabilities) |  | (9,164)
Currency Related Swap | Not a Hedge | Current Liabilities |  |
Derivatives Fair Value [Line Items] |  |
Liability Derivatives, Fair value |  | (2,466)
Currency Related Swap | Not a Hedge | Noncurrent Liabilities |  |
Derivatives Fair Value [Line Items] |  |
Liability Derivatives, Fair value |  | (6,698)
Foreign Currency Derivatives | Not a Hedge |  |
Derivatives Fair Value [Line Items] |  |
Net Asset/(Liabilities) |  | 1,490
Asset Derivatives, Fair Value |  | 1,490
Foreign Currency Derivatives | Not a Hedge | Current Assets |  |
Derivatives Fair Value [Line Items] |  |
Asset Derivatives, Fair Value |  | 145
Foreign Currency Derivatives | Not a Hedge | Noncurrent Assets |  |
Derivatives Fair Value [Line Items] |  |
Asset Derivatives, Fair Value |  | $ 1,345

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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=51814546&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 + Details
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