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Stock-Based Compensation And Earnings Per Share (Total Stock-Based Compensation) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Stock-Based Compensation And Earnings Per Share [Abstract]
Stock-based compensation expense	$ 225	$ 1,911	$ 8,609	$ 4,730

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.

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