Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 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
June 30, 2015:
Employees	63	%	1.2	%	4	—	%
Officers and non-employee directors	81	%	1.8	%	8	—	%
June 30, 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	3,372		$	14.98
Granted	1,091		6.39
Expired	(167	)	28.55
Forfeited	(62	)	9.53
Outstanding at June 30, 2015	4,234		12.31
Exercisable at June 30, 2015	2,516		$	14.69

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	447		$	12.88
Granted	452		6.23
Vested	(167	)	12.91
Forfeited	(56	)	9.70
Nonvested at June 30, 2015	676		$	8.69