Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Measurements [Abstract]

Assets And Liabilities Measured At Fair Value On Recurring Basis By Level

	Fair Value Measurement Using
	Total			Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Liabilities at December 31, 2017:
Warrants issued May 2012	$	—	$	—	$	—	$	—
Warrants issued August 2013		5,746		—		—		5,746
Warrants issued September 2016		19,569,231		—		—		19,569,231
Total liabilities at fair value:	$	19,574,977	$	—	$	—	$	19,574,977
Liabilities at December 31, 2016:
Warrants issued May 2012	$	66,081	$	—	$	—	$	66,081
Warrants issued August 2013		151,695		—		—		151,695
Warrants issued September 2016		19,569,231		—		—		19,569,231
Total liabilities at fair value:	$	19,787,007	$	—	$	—	$	19,787,007

Summary Of Changes In Fair Value Of Level 3 Financial Liabilities

	Warrants issued May 2012	Warrants issued August 2013	Warrants issued September 2016	Total Liabilities
Balance at beginning of period	$                66,081	$          151,695	$        19,569,231	$       19,787,007
Issues	-	-	-	-
Settlements	-	-	-	-
Revaluation	(66,081)	(145,949)	-	(212,030)
Balance at end of period	$                          -	$              5,746	$        19,569,231	$       19,574,977