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Stockholders' Equity-Common and Preferred Shares (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Measurements on Recurring and Nonrecurring Basis

The Series A Preferred Stock was valued using Level 2 inputs by using the market value of the Company’s common stock into which the Series A Preferred Stock is convertible. The Series A Warrants and Series B Warrants granted were valued using the Black-Scholes valuation model and the following Level 3 input assumptions:


Weighted Average Assumptions
	Private Placement Series A Warrants			Private Placement Series B Warrants
Risk-free interest rate		0.24	%		0.24	%
Expected life (years)		2.3			1.9
Expected volatility		87	%		87	%
Dividend yield		0.00	%		0.00	%

Summary of the Company's Outstanding Common Stock Warrants

The following is a summary of the Company’s outstanding common stock warrants as of June 30, 2013 and December 31, 2012:


					Number of Warrants outstanding as of:
	Date of				(In thousands)
Warrants Issued in Connection with:	Issuance		Exercise Price		June 30, 2013		December 31, 2012
Committed Equity Financing Facility		02/19/08	$	657.60		1		1
Direct Registration Series I Warrants		07/20/09	$	504.00		12		12
Private Placement Series A Warrants		04/16/13	$	3.40		1,460		—
Private Placement Series B Warrants		04/16/13	$	3.40		1,377		—

Total Warrants Outstanding						2,850		13

Summary of the Company's Stock Option Activity Under its 2005 Plan

The following is a summary of the Company’s stock option activity under its 2005 Plan for the six months ended June 30, 2013:


	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
	(In thousands)					(Years)		(In thousands)
Options outstanding at December 31, 2012		143		$	19.73		8.64	$	—
Granted		77		$	4.38			$	—
Forfeited and expired		(42	)	$	17.66			$	—

Options outstanding at June 30, 2013		178		$	13.66		8.25	$	—

Options exercisable at June 30, 2013		73		$	21.98		6.74	$	—
Options vested or expected to vest at June 30, 2013		134		$	15.60		7.91	$	—

Weighted-Average Assumptions

The fair values for the stock options granted were estimated at the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions for the six months ended June 30, 2013:


Weighted Average Assumptions
Risk-free interest rate	0.77	%
Expected life (years)	4
Expected volatility	101	%
Dividend yield	0.00	%

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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