Condensed Consolidated Statements of Stockholder's Equity (Deficit) (USD $) In Thousands	Total	Preferred Stock	Preferred Stock Series A Preferred Stock	Preferred Stock Series A Preferred Conversion	Common Stock	Additional Paid-in Capital	Deficit Accumulated During the Development Stage
Beginning Balance at Sep. 14, 2005
Beginning Balance, Shares at Sep. 14, 2005
Capital contributed	1					1
Net loss	(76)						(76)
Ending Balance at Dec. 31, 2005	(75)					1	(76)
Ending Balance, Shares at Dec. 31, 2005
Capital contributed	1,504				11	1,493
Capital contributed, Shares					11,256
Net loss	(1,060)						(1,060)
Ending Balance at Dec. 31, 2006	369				11	1,494	(1,136)
Ending Balance, Shares at Dec. 31, 2006					11,256
Capital contributed	5,093				5	5,088
Capital contributed, Shares					4,837
Net loss	(3,041)						(3,041)
Ending Balance at Dec. 31, 2007	2,421				16	6,582	(4,177)
Ending Balance, Shares at Dec. 31, 2007					16,093
Issuance of common shares in private offering	3,988				2	3,986
Issuance of common shares in private offering, Shares					1,862
Issuance of common shares as repayment of stockholder note per share	10					10
Issuance of common shares as repayment of stockholder note per share, Shares					8
Stock-based compensation	239					239
Net loss	(5,185)						(5,185)
Ending Balance at Dec. 31, 2008	1,473				18	10,817	(9,362)
Ending Balance, Shares at Dec. 31, 2008					17,963
Issuance of Series A Preferred Stock, net of offering costs	1,982		20			1,962
Issuance of Series A Preferred Stock, net of offering costs , shares			2,000
Fair value of beneficial conversion feature of Series A Preferred Stock	200					200
Deemed dividend to Series A Preferred Stockholders, charged to additional paid-in capital in the absence of retained earnings	(200)					(200)
Stock-based compensation	195					195
Net loss	(2,366)						(2,366)
Ending Balance at Dec. 31, 2009	1,284	20			18	12,974	(11,728)
Ending Balance, Shares at Dec. 31, 2009		2,000			17,963
Issuance of Series A Preferred Stock, net of offering costs	1,998		20			1,978
Issuance of Series A Preferred Stock, net of offering costs , shares			2,000
Fair value of beneficial conversion feature of Series A Preferred Stock	500					500
Deemed dividend to Series A Preferred Stockholders, charged to additional paid-in capital in the absence of retained earnings	(500)					(500)
Issuance of common shares in private offering	4,974				5	4,969
Issuance of common shares in private offering, Shares					4,978
Conversion of shares of Series A Preferred Stock and accumulated dividends into shares of Common Stock				(40)	4	36
Conversion of shares of Series A Preferred Stock and accumulated dividends into shares of Common Stock , shares				(4,000)	4,366
Issuance of shares of Common Stock as Consideration Shares					1	(1)
Issuance of shares of Common Stock as Consideration Shares , shares					697
Intrinsic value of aggregate shares of Common Stock issued on conversion of Series A Preferred Stock	4,301					4,301
Dividend paid to Series A Preferred Stockholders on conversion, charged to additional paid-in capital in the absence of retained earnings	(4,301)					(4,301)
Stock-based compensation	471					471
Net loss	(5,303)						(5,303)
Ending Balance at Dec. 31, 2010	3,424				28	20,427	(17,031)
Ending Balance, Shares at Dec. 31, 2010					28,004
Stock-based compensation	335					335
Net loss	(5,758)						(5,758)
Ending Balance at Dec. 31, 2011	(1,999)				28	20,762	(22,789)
Ending Balance, Shares at Dec. 31, 2011					28,004
Issuance of shares of Common Stock as Consideration Shares	8,318				21	8,297
Issuance of shares of Common Stock as Consideration Shares , shares					20,794
Stock-based compensation	111					111
Net loss	(2,137)						(2,137)
Ending Balance at Mar. 31, 2012	$ 4,293				$ 49	$ 29,170	$ (24,926)
Ending Balance, Shares at Mar. 31, 2012					48,798