Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosures [Line Items]
Income Tax Effects Allocated Directly to Equity	$ 67,351	$ (8,909)	$ (23,695)
Federal Statutory Income Tax Rate	35.00%
Current and deferred tax expense due to the repatriation of cash	55,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	5,805	4,043
Operating Loss Carryforwards	519,533	520,803
Net loss carryforward, deferred tax asset	79,300	74,528
Deferred Tax Assets, Operating Loss Carryforwards, Set to Expire	390,529	407,827
Deferred Tax Assets, Operating Loss Carryforwards, No Expiration	129,004	112,976
Deferred Tax Assets,Tax Credit Carryforwards, Foreign	26,481	24,263
Deferred Tax Assets, Tax Credit Carryforwards, General Business	8,011	780
Valuation Allowance, Deferred Tax Asset, Change in Amount	34,835	(9,685)
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability	425,997
Minimum [Member]
Income Tax Disclosures [Line Items]
Unrecognized Tax Benefits, Recognition of Tax Positions, Likelihood of Being Realized Upon Settlement	50.00%
Valuation Allowance of Deferred Tax Assets [Member]
Income Tax Disclosures [Line Items]
Income Tax Effects Allocated Directly to Equity	$ 9,049