Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Reconciliation Of Changes In The Fair Value Of Liabilities) (Details)

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Fair Value Measurements (Reconciliation Of Changes In The Fair Value Of Liabilities) (Details) - Warrant Liabilities [Member] - USD ($)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance at January 1 $ 3,768,351 $ 5,034,058
Additions   3,691,429
Unrealized (gains)/losses, net (1,674,175) 7,995,159
Transfers out of level 3   (10,137,243)
Balance at June 30 $ 2,094,176 $ 6,583,403