Stockholders' Equity - Common and Preferred Shares (Tables)

6 Months Ended

Jun. 30, 2012

Stockholders' Equity - Common and Preferred Shares [Abstract]

Summary of the Company's outstanding common stock warrants

				Number of Warrants outstanding as of: (in thousands)
Warrants Issued in Connection with:	Date of Issuance	Average Exercise  Price		June 30, 2012		December 31, 2011
Committed Equity Financing Facility	February 19, 2008	$	54.80		13		13
Direct Registration Series I Warrants	July 20, 2009	$	42.00		141		141
Total Warrants Outstanding					154		154

Summary of the gain (loss) from the change in fair value of warrants and other financial instruments

	Three Months ended June 30,					Six Months ended June 30,
	2012		2011			2012		2011
Committed Equity Financing Facility	$	—	$	—		$	—	$	3
Direct Registration Warrants		4		(31	)		5		59
Gain recognized in connection with Warrant Exchange agreements		—		—			—		690
Private Placement Warrants		—		—			—		1,427
Total gain (loss) on change in fair market value of derivatives
	$	4	$	(31	)	$	5	$	2,179

Summary of the Company's stock option activity under its 2005 Plan

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life		Aggregate Intrinsic Value
	(In thousands)					(Years)		(In thousands)
Options outstanding at December 31, 2011		1,002		$	5.91		9.22
Granted		774		$	1.07
Forfeited and expired		(548	)	$	7.35
Options outstanding at June 30, 2012		1,228		$	2.22		9.35
Options exercisable at June 30, 2012		337		$	3.89		8.60
Options vested or expected to vest at June 30, 2012		815		$	2.62		9.19	$	—

Weighted-average assumptions

Weighted Average Assumptions
Risk-free interest rate	1.04	%
Expected life	4 Years
Expected volatility	102	%
Dividend yield	0.00