Summary of Significant Accounting Policies (Reconciliation of Financial Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance, liabilities	$ 37,595	$ 1,953		$ 1,953
Additions - fair value at issuance, liabilities			$ 40,013
Change in fair value, liabilities	(9,982)		(12,400)
Ending balance, liabilities	$ 27,613	$ 1,953	$ 27,613	$ 1,953
Stock Appreciation Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance, liabilities
Additions - fair value at issuance, liabilities
Change in fair value, liabilities	$ 312		$ 312
Ending balance, liabilities	$ 312		$ 312
Restricted Stock Units [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance, liabilities
Additions - fair value at issuance, liabilities
Change in fair value, liabilities	$ 137		$ 137
Ending balance, liabilities	137		137
Embedded Derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Beginning balance, assets	2,627
Additions - fair value at issuance, assets			2,504
Change in fair value, assets	854		977
Ending balance, assets	3,481		3,481
Beginning balance, liabilities	13,015
Additions - fair value at issuance, liabilities			13,449
Change in fair value, liabilities	(1,873)		(2,307)
Conversion of debt, liabilities	$ (11,142)		$ (11,142)
Ending balance, liabilities