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Fair Value Measurements on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Fair Value On Recurring Basis [Line Items] |  |
Fair Value of Liabilities | $ 0 | $ (826)
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value On Recurring Basis [Line Items] |  |
Fair Value of Liabilities |  | 0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Fair Value On Recurring Basis [Line Items] |  |
Fair Value of Liabilities |  | 0
Fair Value, Measurements, Recurring [Member] | Unobservable Inputs (Level 3) [Member] |  |
Fair Value On Recurring Basis [Line Items] |  |
Fair Value of Liabilities |  | $ (826)

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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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