Summary of Significant Accounting Policies - Note Payable (Details) - Revenue Interest Purchase Agreement			12 Months Ended
	Nov. 12, 2014	Oct. 05, 2012	Dec. 31, 2015	Dec. 31, 2013
PDL
Note Payable
Internal rate of return calculated percentage				20.535%
Internal rate of return on funded amount				20.00%
Debt Instrument, Term		8 years
Three Peaks
Note Payable
Debt Instrument, Term	10 years		10 years