Fair Value Measurements (Summary Of Changes In Fair Value Of Level 3 Financial Liabilities) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 794,130
Issues	17,649,231
Settlements
Revaluation	1,343,646
Balance at end of period	19,787,007
Warrants Issued May 2012 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	143,681
Issues
Settlements
Revaluation	(77,600)
Balance at end of period	66,081
Warrants Issued August 2013 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	650,449
Issues
Settlements
Revaluation	(498,754)
Balance at end of period	151,695
Warrants Issued September 2016 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Issues	17,649,231
Settlements
Revaluation	1,920,000
Balance at end of period	$ 19,569,231