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Income Taxes (Details) (USD $)	3 Months Ended
Income Taxes (Details) (USD $)	Mar. 31, 2013	Mar. 31, 2012
Income Taxes [Abstract]
Effective income tax rate (in hundredths)	40.20%	40.60%
Unrecognized tax benefits excluding interest	$ 232,000
Unrecognized tax benefits that would impact effective tax rate	207,000
Unrecognized tax benefits that may decrease due to expirations of statute of limitations	$ 0

- Definition

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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