Stockholder's Equity (Details) (USD $)	3 Months Ended		12 Months Ended				88 Months Ended		3 Months Ended	0 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2013	Jan. 15, 2013	Mar. 31, 2013 June 21, 2012 Equity sales agreement	Jan. 17, 2013 Callisto Merger Agreement	Oct. 18, 2012 CRO stock purchase agreement	Jan. 31, 2013 CRO stock purchase agreement	Dec. 31, 2012 CRO stock purchase agreement	Dec. 31, 2012 CRO stock purchase agreement	Oct. 17, 2012 CRO stock purchase agreement
Stockholder's Equity
Number of authorized shares of common stock	200,000,000		100,000,000				200,000,000	100,000,000
Stockholder's Equity
Fair value of common stock issued for services rendered	$ 250,000		$ 93,000	$ 341,000	$ 18,000	$ 2,000						$ 250,000
Percentage of services completed of total contract													50.00%
Fair value of common stock issued for services rendered (in shares)												55,000
Closing stock price (in dollars per share)															$ 4.57
Share based compensation expense	1,257,000	438,000					6,741,000					125,000		125,000
Common stock issued (in shares)									758,093
Gross proceeds from sale of common stock by the entity	4,671,000						121,105,000		4,670,000
Common stock price (in dollars per share)									$ 6.16		$ 4.55
Selling agent fees	140,000						6,863,000		140,000
Percentage of the total contract											25.00%
Shares issued in connection with merger										28,605,379
Exchange Ratio of shares										0.1799
Cancellation of stock (in shares)										22,294,976
Shares granted in connection with merger										1,221,316
Assets
Security deposits										74,000
Total assets acquired										74,000
Liabilities
Accounts payable and other liabilities										(1,400,000)
Net assumed liabilities										(1,326,000)
Elimination of amounts due from Callisto										(3,578,000)
Recapitalization of Synergy	$ (4,904,000)						$ (4,904,000)			$ (4,904,000)