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Income Taxes (Details) (USD $)	3 Months Ended	9 Months Ended
Income Taxes (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Net	$ 17,200,000	$ 17,200,000		$ 18,100,000
Unrecognized Tax Benefits, Period Increase (Decrease)	0	0	0
Unrecognized Tax Benefits	2,600,000	2,600,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 300,000	$ 300,000		$ 200,000

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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