Convertible Preferred Stock And Stockholder's Equity (Tables)

12 Months Ended

Dec. 31, 2017

Convertible Preferred Stock And Stockholders' Equity [Abstract]

Summary Of Reserved Shares Of Common Stock

	December 31,	December 31,
	2017	2016
Warrants	38,779,119	38,963,443
Series A Convertible Preferred Stock Series	47,844,562	47,844,562
Stock award plans	5,573,046	1,524,996
Employee Stock Purchase Plan	125,618	192,290
	92,322,345	88,525,291

Summary Of Option And Stock Appreciation Rights Activity

	Number of Options/SARs	Range of Exercise Price	Weighted Average Exercise Price per Share
Outstanding, December 31, 2016	671,887	$1.45 - $116.40	$8.77
Granted	10,000	$0.62	$0.62
Exercised	-	-	-
Forfeited	(268,586)	$2.15 - $116.40	$8.06
Outstanding, December 31, 2017	413,301	$0.62 - $54.90	$9.04

Summary Of Options And Stock Appreciation Rights Outstanding By Range Of Exercise Price

	Year Ended December 31, 2017
							Number of		Weighted
			Weighted		Weighted		Options		Average Exercise
	Options		Average		Average		Currently		Price Per Vested
Range of Exercise Prices	Outstanding		Remaining Life		Exercise Price		Exercisable		Share
$0.00 - $2.00		63,500		7.43 years	$	1.66		38,362	$	1.86
$2.01-  $4.00		154,001		7.11 years	$	2.15		111,974	$	2.15
$4.01 - $10.00		126,055		6.24 years	$	4.04		118,921	$	4.04
$30.01 - $40.00		45,245		2.99 years	$	34.89		45,245	$	34.89
$40.01 - $50.00		12,250		1.44 years	$	43.90		12,250	$	43.90
$50.01 - $60.00		12,250		0.41 years	$	54.90		12,250	$	54.90
		413,301		6.07 years	$	9.04		339,002	$	10.56

Summary Of Restricted Stock Unit Activity

	Number of Restricted Stock Units	Weighted Average Grant Date Fair Value per Unit
Outstanding, December 31, 2016	1,167,099	$1.48
Granted	274,736	$0.61
Vested	(675,472)	$1.51
Forfeited	(86,000)	$1.43
Outstanding, December 31, 2017	680,363	$1.11