Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended				12 Months Ended	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]	Dec. 31, 2011 Minimum [Member]	Dec. 31, 2009 Impact to Income Tax Expense [Member]
Income Tax Disclosures [Line Items]
Income Tax Effects Allocated Directly to Equity	$ (23,695)	$ (5,512)	$ 8,066
Income Tax Expense (Benefit), Goodwill Adjustment		3,922
Discontinued Operation, Tax Effect of Discontinued Operation	116	2,836	7,374
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation			13,558
Federal Statutory Income Tax Rate	35.00%
Income Tax Expense (Benefit)	12,815	14,561	44,477			8,765
Unrecognized Tax Benefits, Recognition of Tax Positions, Likelihood of Being Realized Upon Settlement					50.00%
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	2,387	2,516
Operating Loss Carryforwards	568,229
Net loss carryforward, deferred tax asset	86,918	98,798
Deferred Tax Assets, Operating Loss Carryforwards, Set to Expire	411,220
Deferred Tax Assets, Operating Loss Carryforwards, No Expiration	157,009
Valuation Allowance, Deferred Tax Asset, Change in Amount	38,187	7,664
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability				$ 850,000