Income Taxes Income Taxes Details 7 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Year One	$ 241,619
Year Two	111,084
Year Three	143,491
Year Four	183,271
Thereafter	3,120,058
Operating Loss Carryforwards	3,799,523
Loss Carry Forwards, Unexpiring	52,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	15,900
Loss and tax credit carry-forwards	157,795	$ 171,725
Valuation allowance	132,500	$ 126,654
Federal
Operating Loss Carryforwards [Line Items]
Year One	0
Year Two	0
Year Three	0
Year Four	200
Thereafter	1,900
Operating Loss Carryforwards	2,100
Loss and tax credit carry-forwards	914
Valuation allowance	0
State
Operating Loss Carryforwards [Line Items]
Year One	241,619
Year Two	111,084
Year Three	143,491
Year Four	183,071
Thereafter	3,111,526
Operating Loss Carryforwards	3,790,791
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	9,600
Loss and tax credit carry-forwards	136,462
Valuation allowance	101,417
Foreign
Operating Loss Carryforwards [Line Items]
Year One	0
Year Two	0
Year Three	0
Year Four	0
Thereafter	6,632
Operating Loss Carryforwards	6,632
Loss and tax credit carry-forwards	20,419
Valuation allowance	$ 31,083