Development and License Agreement (Details) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Research And Development Agreements [Line Items]
Other revenues		$ 1,299,760	$ 2,222,225	$ 4,305,556
Previous TTP quarterly payment		1,250,000		1,250,000
Amended TTP quarterly payment		1,000,000		1,000,000
Annual amount of TTP Quarterly payments for an agreed period		2,000,000		2,000,000
Additional TTP Quarterly Payment	1,000,000
Advances from licensee		$ 0	$ 200,000