Royalty Monetization (Details Textual)	3 Months Ended		6 Months Ended				1 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2013 JPY (¥)	Jun. 30, 2012 USD ($)	Dec. 31, 2012 USD ($)	Mar. 31, 2011 JPR Royalty Sub LLC [Member] USD ($)	Jun. 30, 2013 JPR Royalty Sub LLC [Member] USD ($)	Mar. 09, 2011 JPR Royalty Sub LLC [Member] USD ($)	Jun. 30, 2013 Pharma Notes [Member] USD ($)	Mar. 09, 2011 Pharma Notes [Member] USD ($)
Royalty Monetization (Textual) [Abstract]
Proceeds from non-recourse notes									$ 30,000,000
Net proceeds from transaction							22,691,000
Transaction costs							4,309,000
Establishment costs							3,000,000
Interest Due	3,658,000		3,658,000			1,998,000		152,000
Aggregate principal amount											30,000,000
Percentage of interest on notes secured											14.00%
Aggregate fair value of PhaRMA Notes										30,000,000
Royalty Monetization (Additional Textual) [Abstract]
Pharma Notes Interest payment date of first payment			Sep. 01, 2011	Sep. 01, 2011
Yen rate per dollar				100
Currency hedge premium payable period range one			2014	2014
Currency hedge premium payable period range two			2020	2020
Payment of premium			1,950,000
Minimum currency value required for payment of premium on specified date				100
Cumulative mark-to-market adjustments - gain	1,114,000	(997,000)	3,071,000		(959,000)
Currency Hedge Agreement	2,400,000		2,400,000
Currency hedge agreement termination period range one			2016	2016
Currency hedge agreement termination period range two			2020	2020
Termination fee			1,950,000
Termination maximum obligation			$ 5,850,000