XML 35 R29.htm IDEA: XBRL DOCUMENT

Equity Compensation (Stock-Based Compensation Expense and Related Income Tax Benefit Recognized in Condensed Consolidated Statements of Income) (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Equity Compensation
Stock-based compensation expense	$ 4,758	$ 4,186	$ 8,672	$ 8,999
Income tax (benefit)	$ (1,832)	$ (1,612)	$ (3,339)	$ (3,465)

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References+ Details