Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosures [Line Items]
Income Tax Effects Allocated Directly to Equity	$ 8,909	$ 23,695	$ 5,512
Income Tax Expense (Benefit), Goodwill Adjustment			3,922
Discontinued Operation, Tax Effect of Discontinued Operation	0	116	2,836
Federal Statutory Income Tax Rate	35.00%
2012 Research and Development Credit to be recognized in 2013	1,515
Reversal of Additional Taxes Provided related to the Expiration of the Controlled Foreign Corporation Look-Thru to be recognized in 2013	1,708
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	4,043	2,387
Operating Loss Carryforwards	520,803
Net loss carryforward, deferred tax asset	74,528	86,918
Deferred Tax Assets, Operating Loss Carryforwards, Set to Expire	407,827
Deferred Tax Assets, Operating Loss Carryforwards, No Expiration	112,976
Deferred Tax ASsets, Domestic Foreign Tax Credit Carryforwards, Set to Expire	24,263
Valuation Allowance, Deferred Tax Asset, Change in Amount	9,685	38,187
Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]
Income Tax Disclosures [Line Items]
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability	$ 900,000
Minimum [Member]
Income Tax Disclosures [Line Items]
Unrecognized Tax Benefits, Recognition of Tax Positions, Likelihood of Being Realized Upon Settlement	50.00%