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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate, Continuing Operations	39.00%	38.50%	38.80%	37.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	$ 0	$ 0	$ 0	$ (5,719)

- 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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