Income Taxes Components of Deferred Income Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Components of Deferred Tax Assets [Abstract]
Deferred Tax Assets, Valuation Allowance	$ (159,200)	$ (128,200)
Deferred Tax Asset [Domain]
Components of Deferred Tax Assets [Abstract]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Returns and Allowances	94,379	77,910
Deferred Tax Assets, Tax Deferred Expense, Other	1,377	3,705
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	16,046	15,489
Deferred Tax Assets, Unrealized Currency Losses	0	437
Deferred Tax Assets, Net Operating Loss and Tax Credit Carryforwards	147,954	143,204
Deferred Tax Assets, Intangible assets, net	1,687	0
Deferred Tax Assets, Other	721	333
Deferred Tax Assets, Gross	262,164	241,078
Deferred Tax Assets, Valuation Allowance	(159,249)	(128,215)
Deferred Tax Assets, Net of Valuation Allowance	102,915	112,863
Deferred Tax Liability [Member]
Components of Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities, Unrealized Currency Transaction Gains	(117)	0
Deferred Tax Liabilities, Prepaid Expenses	(1,532)	(1,520)
Deferred Tax Liabilities, Property, Plant and Equipment	(15,602)	(6,263)
Deferred Tax Liabilities, Intangible Assets	0	(7,715)
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates	(6,791)	0
Deferred Tax Liabilities, Tax Deferred Income	(92,306)	(116,287)
Deferred Tax Liabilities, Gross	(116,348)	(131,785)
Deferred Tax Liabilities, Net	$ 13,433	$ 18,922