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Derivatives Not Designated as Hedging Instruments by Classification and Amount of Gains and Losses (Detail) (Not Designated As Hedging Instrument, Foreign Exchange Forward, USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments | $ 1,131 | $ (3,918) | $ 10,455 | $ (17,290)
Non-Operating Income Expense Classification |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments | 2,216 | (3,546) | 9,769 | (17,321)
Cost of Sales Classification |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments | $ (1,085) | $ (372) | $ 686 | $ 31

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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