Fair Value Measurements (Summary Of Changes In The Fair Value Of The Company's Level 3 Financial Asset And Liabilities) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Balance at beginning of period	$ 5,644,626
Liabilities, Revaluation	(3,510,439)
Liabilities, Balance at end of period	2,134,187
Warrants Issued December 29, 2008 [Member]
Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Balance at beginning of period	16,863
Liabilities, Revaluation	(16,863)
Warrants Issued May 10, 2012 [Member]
Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Balance at beginning of period	1,915,753
Liabilities, Revaluation	(1,187,041)
Liabilities, Balance at end of period	728,712
Warrants Issued August 2013 [Member]
Fair Value, Assets And Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Liabilities, Balance at beginning of period	3,712,010
Liabilities, Revaluation	(2,306,535)
Liabilities, Balance at end of period	$ 1,405,475