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Business Acquisitions (Pro Forma Operational Results Of Company's Condensed Consolidated Statements Of Operations) (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
	Jun. 30, 2010	Jun. 30, 2010
Business Acquisitions
Net revenue	$ 106,575	$ 204,567
Net income	$ 30,134	$ 48,148
Net income per share - basic	$ 0.78	$ 1.25
Net income per share - diluted	$ 0.77	$ 1.23

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details

- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details