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Income Taxes Income Taxes - Valuation Allowance (Details) (USD $)	9 Months Ended
	Sep. 30, 2012	Aug. 31, 2012
Income Taxes [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards		$ 81,100,000
Reduction in Valuation Allowance Recorded Against Net Deferred Tax Assets	(3,722,000)
Deferred Tax Assets, Valuation Allowance	$ 137,104,000

The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns 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 sum of the portions of deferred tax assets as of the balance sheet date for which, based on the weight of available evidence, it is more likely than not will not be realized through future reductions of tax-based income.

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