Summary of Significant Accounting Policies Equity Incentive Awards (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019:
Employees	63	%	2.5	%	4	—	%
Officers and non-employee directors	63	%	2.6	%	8	—	%
March 31, 2018:
Employees	60	%	2.5	%	4	—	%
Officers and non-employee directors	63	%	2.8	%	8	—	%

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

	Options		Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2018	6,152		$	10.68
Granted	2,132		5.18
Expired	(197	)	10.15
Forfeited	(56	)	10.63
Outstanding at March 31, 2019	8,031		9.24
Exercisable at March 31, 2019	3,886		$	10.64

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

	Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding at December 31, 2018	1,286		$	10.17
Granted	2,257		5.14
Vested	(517	)	9.60
Forfeited	(23	)	7.85
Outstanding at March 31, 2019	3,003		$	6.50