Summary of Significant Accounting Policies Equity Incentive Awards (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [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, 2018:
Employees	60	%	2.5	%	4	—	%
Officers and non-employee directors	63	%	2.8	%	8	—	%
March 31, 2017:
Employees	62	%	1.7	%	4	—	%
Officers and non-employee directors	71	%	2.3	%	8	—	%

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

	Options		Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2017	4,961		$	11.17
Granted	1,321		9.69
Exercised	(3	)	7.35
Expired	(170	)	14.23
Forfeited	(75	)	12.38
Outstanding at March 31,2018	6,034		10.74
Exercisable at March 31, 2018	3,253		$	10.89

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding at December 31, 2017	946		$	10.50
Granted	872		9.79
Vested	(334	)	9.85
Forfeited	(51	)	10.98
Outstanding at March 31, 2018	1,433		$	10.20