Income Taxes Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent	59.60%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Deferred Tax Assets, Valuation Allowance	$ 235,339	$ 257,728
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax	2,500
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	48,000
Deferred Tax Assets, Tax Credit Carryforwards, General Business	21,900
Excess tax benefits from employee stock plan exercises	55,200
Tax effect of excess benefits from employee stock plan exercises, which will increase our common stock when it reduces our cash taxes payable, and which is not recognized in our deferred tax assets	20,300
Undistributed Earnings of Foreign Subsidiaries and Foreign Corporate Joint Ventures [Member]
Undistributed Earnings of Foreign Subsidiaries	$ 26,600	$ 31,400