v2.4.0.6

Summary Of Warrants Outstanding (Detail)				3 Months Ended
	Mar. 31, 2013	Feb. 19, 2013	Mar. 31, 2012	Mar. 31, 2013 Ipo	Mar. 31, 2013 Sep 20, 2012 Private Placement	Mar. 31, 2013 2009 private placement	Mar. 31, 2013 November 13, 2012 private placement	Mar. 31, 2013 Ipo underwriters	Mar. 31, 2013 February 2013 private placement	Mar. 31, 2013 Co placement agents	Mar. 31, 2013 Placement Agent Sep 20, 2012 Private Placement	Mar. 31, 2013 Placement Agent November 13, 2012 private placement
Warrants and Rights Note Disclosure [Line Items]
Class of warrant or right, outstanding	8,610,665		4,807,534	4,043,569	2,125,000	503,034	1,185,000		400,000	18,250	212,500	118,500
Class of warrant or right, number of securities called by warrants or rights								4,812
Class of warrant or right, exercise price of warrants or rights		1.50		3.4375	0.4	3.4375	0.40		1.50	7.84	0.40	0.40
Class of warrant or right number of securities called by warrants or rights weighted average exercise price								3.9
Class of warrant or right expiration date				Mar. 24, 2015	Sep. 20, 2017	Oct. 29, 2014	Nov. 13, 2017		Feb. 19, 2018	Oct. 29, 2014	Sep. 20, 2017	Nov. 13, 2017
Class of warrant or right number of securities called by warrants or rights expiry date								Mar. 24, 2015

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The exercise price of each class of warrants or rights outstanding.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690



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The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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