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Cash Flow Hedge Related to Variable Debt Instrument and Outstanding Foreign Currency Derivatives to Hedge Foreign Currency Balances Measured at Fair Value on Recurring Basis, and Balances (Detail) (Fair Value, Measurements, Recurring, Cash Flow Hedging, Level 2, USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
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Fair Value, Measurements, Recurring | Cash Flow Hedging | Level 2 |  |  |  |
Liability: |  |  |  |
Foreign currency derivative financial instrument |  |  | $ 160 |
Interest rate derivative financial instruments | $ 848 | [1] | $ 1,201 | [1]
[1] | Includes accrued interest expense

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- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities on the balance sheet. + 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) -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 derivative liabilities designated as interest rate fair value 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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