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Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Income Taxes [Line Items]
State net operating loss carryforwards	$ 294,929
State net operating loss carryforwards, increase in valuation allowance	1,898
Investment In Foreign Subsidiaries And Foreign Corporate Joint Ventures That Are Essentially Permanent In Duration [Member]
Income Taxes [Line Items]
Undistributed earnings and profits of foreign corporate joint venture and foreign subsidiaries	$ 13,223

The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a state or local jurisdiction in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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