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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
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Derivatives, Fair Value [Line Items] |  |
Forward exchange contracts, Assets | $ 746 | $ 961
Forward exchange contracts, Liabilities | (749) | (1,310)
Total net derivative (liability) designated as hedging instruments | (3) | (349)
Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward exchange contracts, Assets | 746 | 961
Forward exchange contracts, Liabilities | (749) | (1,310)
Total net derivative (liability) designated as hedging instruments | $ (3) | $ (349)

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- Definition Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow 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 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow 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 4B -Subparagraph (a),(b),(c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow 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 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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