Income Taxes Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized Tax Benefits	$ 78,079	$ 81,459	$ 1,539
Unrecognized Tax Benefits, Additions Based on Tax Positions Related to Current Year	3,608	10,132
Unrecognized Tax Benefits, Additions for Tax Positions of Prior Years	1,570	71,327
Unrecognized Tax Benefits, Reductions for Tax Positions of Prior Years	(8,558)	$ (1,539)
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	78,100
Liability for Uncertain Tax Positions, Noncurrent	$ 3,500