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Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
Income Taxes (Narrative) (Details) (USD $)	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Income Taxes
Reversal of portion of unrecognized tax benefits	$ (623,000)	$ (652,000)	$ (623,000)	$ (652,000)
Unrecognized tax benefit liability includes interest		210,000
Unrecognized tax benefits resulting in net operating loss carryforward	350,000		350,000
Valuation allowance		$ 0		$ 0

Amount of an unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward. This amount is presented as a reduction of the related deferred tax asset in the balance sheet if that deferred tax asset is not used. This amount is presented separately from the deferred tax asset for a net operating loss carryforward if this unrelated tax benefit is associated with a different tax position.

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