Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Stock-Based Compensation [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Expected Volatility		Risk-free Interest Rate		Expected Term	Dividend Rate
March 31, 2015:
Employees	63	%	1.2	%	4	—	%
Officers and non-employee directors	81	%	1.9	%	8	—	%
March 31, 2014:
Employees	66	%	1.1	%	4	—	%
Officers and non-employee directors	80	%	2.3	%	8	—	%

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Options		Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2014	23,603		$	2.14
Granted	6,661		0.89
Expired	(585	)	5.66
Forfeited	(408	)	1.33
Outstanding at March 31, 2015	29,271		1.80
Exercisable at March 31, 2015	17,627		$	2.12

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding at December 31, 2014	3,131		$	1.84
Granted	3,166		0.89
Vested	(1,166	)	1.84
Forfeited	(336	)	1.34
Nonvested at March 31, 2015	4,795		$	1.25