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Stock-Based Compensation (Components of Stock-Based Compensation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total stock-based compensation	$ 2,036	$ 3,969	$ 10,023
Discontinued Operations [Member]
Total stock-based compensation	240	1,424	5,212
Continuing Operations [Member]
Total stock-based compensation	$ 1,796	$ 2,545	$ 4,811

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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