Summary of Significant Accounting Policies Equity Incentive Awards (Tables)

6 Months Ended

Jun. 30, 2017

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, 2017:
Employees	61	%	1.8	%	4	—	%
Officers and non-employee directors	69	%	2.2	%	8	—	%
June 30, 2016:
Employees	63	%	1.1	%	4	—	%
Officers and non-employee directors	83	%	1.6	%	8	—	%

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

	Options		Weighted Average Exercise Price
	(in thousands)
Outstanding at December 31, 2016	4,834		$	11.24
Granted	804		14.52
Exercised	(451	)	12.03
Expired	(127	)	27.51
Forfeited	(66	)	12.73
Outstanding at June 30, 2017	4,994		11.26
Exercisable at June 30, 2017	2,713		$	11.20

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

	Shares		Weighted Average Grant Date Fair Value
	(in thousands)
Outstanding at December 31, 2016	875		$	8.13
Granted	418		14.44
Vested	(286	)	8.78
Forfeited	(33	)	10.46
Outstanding at June 30, 2017	974		$	10.57