Derivative Liabilities - Significant Assumptions (or Ranges) Used in Valuing Outstanding Warrants (Detail) (USD $)	12 Months Ended
Dec. 31, 2012
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Trading market values	$ 0.60
Term (years)	7 months 10 days
Volatility	44.80%
Risk-free rate	0.06%

Derivative liabilities significant assumptions (or ranges), trading market values.

No definition available.

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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