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Income Taxes (Details)	3 Months Ended
Income Taxes (Details)	Mar. 31, 2012	Mar. 31, 2011
Income Taxes [Abstract]
Effective tax rate	37.30%	37.90%
Percentage of tax position benefit maximum than being realized upon ultimate settlement	50.00%

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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