Summary of Significant Accounting Policies Equity Incentive Awards (Tables)

6 Months Ended

Jun. 30, 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
June 30, 2019:
Employees	63	%	2.4	%	4	—	%
Officers and non-employee directors	63	%	2.6	%	8	—	%
June 30, 2018:
Employees	59	%	2.5	%	4	—	%
Officers and non-employee directors	63	%	2.8	%	8	—	%

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Options		Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2018	6,152		$	10.68
Granted	2,196		5.19
Expired	(210	)	9.95
Forfeited	(183	)	10.28
Outstanding at June 30, 2019	7,955		9.20
Exercisable at June 30, 2019	4,093		$	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	2,285		5.14
Vested	(517	)	9.60
Forfeited	(158	)	6.77
Outstanding at June 30, 2019	2,896		$	6.49