Financial Instruments and Fair Value (Reconciliation of Financial Liabilities) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Gain on warrant derivative	$ 0	$ 3,000
Level 1 | Derivative warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	0
(Gain) loss on warrant derivative	0
Ending balance	0
Level 3 | Derivative warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		3,189,000
Gain on warrant derivative		3,000
Ending balance		$ 3,186,000