Note Payable and Term Loan Agreement - Note Payable (Details) - USD ($)			1 Months Ended		2 Months Ended	12 Months Ended
	Nov. 12, 2014	Oct. 05, 2012	Oct. 31, 2012	Aug. 31, 2012	Oct. 05, 2012	Dec. 31, 2015	Dec. 31, 2014	Nov. 13, 2014	Dec. 31, 2013
Note Payable
Interest expense						$ 3,988,619	$ 6,812,315
Interest Paid						3,525,978	3,912,463
Interest Expense.
Note Payable
Non-cash expense						462,000	86,000
PDL and Three Peaks
Note Payable
Interest expense						$ 3,526,000	$ 6,724,000
Revenue Interest Purchase Agreement | Three Peaks
Note Payable
Royalty percentage on net revenue	3.75%
Minimum annual payment amounts
Term	10 years					10 years
Revenue Interest Purchase Agreement | Three Peaks | Maximum
Note Payable
Royalty percentage on net revenue	4.80%
Revenue Interest Purchase Agreement | PDL
Note Payable
Payment to extinguish royalty contract	$ 30,300,000
Minimum annual payment amounts
Term		8 years
Internal rate of return on funded amount									20.00%
Funded amount			$ 19,050,000	$ 1,750,000	$ 20,800,000
Term Loan | Three Peaks
Note Payable
Total debt	$ 25,000,000
Interest rate stated (as a percent)	9.00%
Basis spread on fixed rate, option 1	LIBOR
Basis spread on fixed rate, option 2	1.00%
Effective interest rate (as a percent)						10.00%	10.00%	10.00%
Minimum annual payment amounts
Term	6 years