Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2012

Equity Incentive Plans [Abstract]

Fair value of each stock option granted weighted-average assumptions

	Year Ended December 31, 2012			Year Ended December 31, 2011			Year Ended December 31, 2010
Fair value of options granted	$	1.26		$	1.33		$	2.10
Expected volatility		89	%		78	%		79	%
Risk-free interest rate		1.5	%		2.2	%		2.8	%
Expected lives		7.0 years			7.0 years			7.0 years
Dividend rate		—			—			—

Summary of stock option activity

Options	Number of Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2009		10,169		$	8.90
Granted		200		$	2.87
Exercised		(138	)		1.73			$	192
Forfeited or cancelled		(2,375	)		14.68
Outstanding at December 31, 2010		7,856		$	7.12
Granted		260		$	2.03
Exercised		(25	)		1.73			$	14
Forfeited or cancelled		(886	)		9.39
Outstanding at December 31, 2011		7,205		$	6.68
Granted		2,592		$	1.64
Exercised		(50	)		0.46			$	45
Forfeited or cancelled		(1,540	)		9.72
Outstanding at December 31, 2012		8,207		$	4.55		5.39	$	244
Exercisable at December 31, 2012		6,266		$	5.46		4.19	$	180
Expected to Vest at December 31, 2012		1,941		$	1.64		9.28	$	64

Summary of nonvested restricted stock and restricted stock units activity

	Number of Shares			Weighted- Average Grant Date Fair Value
Nonvested balance at December 31, 2009		1,240		$	7.04
Granted		875			2.50
Vested		(634	)		6.67
Forfeited or cancelled		(40	)		7.61
Nonvested balance at December 31, 2010		1,441		$	4.43
Granted		1,003			1.78
Vested		(512	)		5.28
Forfeited or cancelled		(22	)		3.69
Nonvested balance at December 31, 2011		1,910		$	2.81
Vested		(840	)		3.37
Forfeited or cancelled		(55	)		1.97
Nonvested balance at December 31, 2012		1,015		$	2.43