Summary of Significant Accounting Policies Equity Incentive Awards (Tables)

9 Months Ended

Sep. 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
September 30, 2017:
Employees	61	%	1.7	%	4	—	%
Officers and non-employee directors	70	%	2.2	%	8	—	%
September 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	847		14.51
Exercised	(458	)	11.98
Expired	(149	)	26.59
Forfeited	(82	)	13.55
Outstanding at September 30, 2017	4,992		11.23
Exercisable at September 30, 2017	2,896		$	11.06

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	(38	)	10.98
Outstanding at September 30, 2017	969		$	10.55