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Income Tax (Details) (USD $)	3 Months Ended		9 Months Ended
Income Tax (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax [Abstract]
Gross unrecognized tax benefits	$ 2,100,000		$ 2,100,000		$ 2,100,000
Deferred Tax Assets, Valuation Allowance	69,200,000		69,200,000		75,200,000
Income tax expense (benefit)	0	(482,000)	0	(748,000)
Favorable tax adjustments		(90,000)		(130,000)
Income tax expense (benefit) due to offset		$ (230,000)		$ (490,000)

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.