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Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 21, 2011
Income Taxes (Textual) [Abstract]
Income tax expense benefit	$ 1,000,000	$ 200,000	$ 1,900,000	$ 2,800,000
Effective tax rate	19.00%	6.00%	10.00%	30.00%
Recorded tax benefit for domestic operating losses			0
Unrecognized tax benefits	4,100,000		4,100,000		4,300,000
Tax benefit impacting annual effective rate	4,000,000		4,000,000			4,200,000
Decrease in unrecognized tax benefits			$ 1,400,000

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Expected decrease in unrecognized tax benefits over next twelve months.

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Recorded tax benefit for domestic operating losses.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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