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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Summary of the combined activity under all of the stock option plans

		Number of Options Outstanding				Weighted Average Exercise Price
Outstanding at January 1, 2012			19,324			$	92.19
Granted			1,460,000				4.26
Cancelled or expired			(8,124	)			69.36
Exercised			---				---
Outstanding at June 30, 2012			1,471,200			$	6.79

Summary of assumptions used to value stock options granted to employees and directors

		For the Six
		Months Ended June 30, 2012

Annual dividend yield			--
Expected life (years)			3.8
Risk-free interest rate			0.55% - 0.57%
Expected volatility			186% - 187%

Stock based compensation expense related to stock options and warrants

		Three months ended June 30, 2011				Three months ended June 30, 2012
Stock-based compensation		$	183			$	$2,317

		Six months ended June 30, 2011				Six months ended June 30, 2012				Remaining unamortized expense at June 30, 2012
Stock-based compensation		$	472			$	2,351			$	3,607

Summary of all warrant activity

		June 30, 2012
Outstanding and exercisable		Warrants				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life
January 1, 2012			5,405,606			$	1.57				2.45
Issued			--			$	--				--
Expired/forfeited			--				--				--
Exercised			(223,500	)		$	0.61				--
Outstanding and exercisable, June 30, 2012			5,182,106			$	1.61				1.87

Summary of outstanding warrants to purchase common stock



Description	Issue Date		Exercise Price			Shares		Expiration Date

September 2007 Investor Warrant	9/26/2007		$	31.75		233			9/26/2012
August 2009 Employee Warrants	8/25/2009		$	0.50		240,000			8/25/2016
January 2010 Investor Warrant	1/28/2010		$	1.00		40,000			1/28/2013
2007 Debt Extension Warrants	9/22/2010		$	1.00		16,000			9/22/2015
September 2010 Repricing Warrant	9/28/2010		$	1.38		4,000			9/28/2013
October 2010 Repricing Warrants	10/18/2010		$	1.38		2,434,830			10/18/2013
October 2010 Employee Warrants	10/15/2010		$	1.38		1,440,000			10/15/2013
December 2010 Employee Warrants	12/3/2010		$	1.63		200,000			12/3/2015
January 2011 Employee Warrant	1/21/2011		$	2.00		20,000			1/21/2014
February 2011 Legal Advisor Warrant	2/22/2011		$	2.00		80,000			2/22/2016
March 2011 Investor Warrants	3/9/2011		$	3.13		617,943			3/9/2016
March 2011 Investor Warrants	4/7/2011		$	3.13		49,100			4/7/2016
May 2011 Consultant Warrant	5/17/2011		$	4.05		20,000			5/17/2014
September 2011 Employee Warrant	9/12/2011		$	3.90		20,000			9/12/2014
Total Warrants Outstanding						5,182,106