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Stock-Based Compensation Arrangements (Schedule Of General And Administrative Expenses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Stock-Based Compensation Arrangements [Abstract]
G & A Expenses	$ 1,314	$ 1,141	$ 1,632	$ 2,258
Capitalized G & A	203	415	1,575	856
Total non-cash stock-based compensation	$ 1,517	$ 1,556	$ 3,207	$ 3,114

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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