Consolidated Statements of Changes in Stockholders' Deficit (USD $)	12 Months Ended				25 Months Ended	73 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2007	Dec. 31, 2011
Share-based compensation expense	$ 921,512	$ 664,908	$ 171,059	$ 24,526	$ 18,347
Issuance of common stock upon exercise of stock options	10,434
Issuance of common stock to 401(k) plan	41,662
Fair value of warrants issued for services	10,051
Fair value of derivative warrant liability reclassified to additional paid-in capital	1,239,539
Beneficial conversion feature on notes payable		272,762
Net loss	(34,728,215)	(7,910,950)	(2,515,878)	(1,564,069)	(1,097,702)	(47,816,814)
Ending Balance	(31,159,694)	(1,852,502)	(3,619,351)	(2,618,898)	(1,079,355)	(31,159,694)
Convertible Notes Payable and Accrued Interest
Conversion of convertible securities		3,328,128	1,344,366
Services
Issuance of common stock	209,451
Exercise of warrants
Issuance of common stock	988,374
Other | Cash
Issuance of common stock		1,000,000
Private placement
Issuance of common stock	2,000,000	3,907,404
Private placement | Bridge Notes Payable
Conversion of convertible securities		504,597
Common Stock
Issuance of common stock upon exercise of stock options (in shares)	143,731
Issuance of common stock upon exercise of stock options	1
Issuance of common stock to 401(k) plan (in shares)	39,848
Issuance of common stock to 401(k) plan	1
Issuance of common stock in reverse merger (in shares)		6,999,981
Issuance of common stock in reverse merger		70
Ending Balance (in shares)	53,760,471	51,647,171	26,259,515	24,787,080	24,787,080	53,760,471
Ending Balance	538	516	263	248	248	538
Common Stock | Founders
Issuance of common stock (in shares)					24,787,080
Issuance of common stock					248
Common Stock | Convertible Notes Payable and Accrued Interest
Conversion of convertible securities (in shares)		3,792,417	1,472,435
Conversion of convertible securities		38	15
Common Stock | Services
Issuance of common stock (in shares)	215,000
Issuance of common stock	3
Common Stock | Exercise of warrants
Issuance of common stock (in shares)	734,329
Issuance of common stock	7
Common Stock | Other | Cash
Issuance of common stock (in shares)		1,095,258
Issuance of common stock		10
Common Stock | Private placement
Issuance of common stock (in shares)	980,392	12,995,403
Issuance of common stock	10	130
Common Stock | Private placement | Bridge Notes Payable
Conversion of convertible securities (in shares)		504,597
Conversion of convertible securities		5
Additional Paid-in Capital
Share-based compensation expense	921,512	664,908	171,059	24,526	18,347
Issuance of common stock upon exercise of stock options	10,433
Issuance of common stock to 401(k) plan	41,661
Fair value of warrants issued for services	10,051
Fair value of derivative warrant liability reclassified to additional paid-in capital	1,239,539
Issuance of common stock in reverse merger		(70)
Beneficial conversion feature on notes payable		272,762
Ending Balance	16,656,830	11,235,829	1,558,283	42,873	18,347	16,656,830
Additional Paid-in Capital | Convertible Notes Payable and Accrued Interest
Conversion of convertible securities		3,328,090	1,344,351
Additional Paid-in Capital | Services
Issuance of common stock	209,448
Additional Paid-in Capital | Exercise of warrants
Issuance of common stock	988,367
Additional Paid-in Capital | Other | Cash
Issuance of common stock		999,990
Additional Paid-in Capital | Private placement
Issuance of common stock	1,999,990	3,907,274
Additional Paid-in Capital | Private placement | Bridge Notes Payable
Conversion of convertible securities		504,592
Deficit Accumulated During the Development Stage
Net loss	(34,728,215)	(7,910,950)	(2,515,878)	(1,564,069)	(1,097,702)
Ending Balance	(47,817,062)	(13,088,847)	(5,177,897)	(2,662,019)	(1,097,950)	(47,817,062)
Deficit Accumulated During the Development Stage | Founders
Issuance of common stock					$ (248)