Fair Value Measurements (Assumptions) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Term Loan
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	17.50%
Term Loan | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	6.08%
Term Loan | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	63.76%
Royalty Interest | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Revenue volatility	$ 189,119
Royalty Interest | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Revenue volatility	$ 431,961
Loan Commitment | Minimum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	6.08%
Loan Commitment | Maximum
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	63.76%
Level 3 | Senior Secured Term Loan
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Senior secured term loan	$ 21,276
Level 3 | Royalty Interest
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Revenue volatility (as a percent)	32.30%
Level 3 | Loan Commitment
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate (as a percent)	17.50%
Warrants
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount for lack of marketability volatility (as a percent)	50.50%
Warrants | Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Warrants	$ 3,741