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Stock - Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Components of stock-based compensation
Total stock-based compensation	$ 620	$ 613	$ 1,142	$ 2,136
Stock-based compensation included in income from discontinued operations	(216)	(199)	(153)	(845)
Stock-based compensation included in income from continuing operations	$ 404	$ 414	$ 989	$ 1,291

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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