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Financial Instruments - Effect of Derivative Instruments on Condensed Consolidated Statement of Operations (Parenthetical) (Detail) (USD $) | 6 Months Ended
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Jun. 30, 2012
Fair Value Disclosures [Abstract] |
Net proceeds from derivative instruments | $ 1,030,000

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- Definition The cash inflow provided by derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3505-108585 + Details
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