Fair Value of Derivatives Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2012
Derivative [Line Items]
Derivative liability, written off to additional paid in capital	$ 1,761,657
Warrants Attached to Debt
Derivative [Line Items]
Fair value of derivative liabilities at issuance	$ 2,314,635

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

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

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration