Credit Facility (Summary Of Costs Incurred In Connection With Credit Facilities) (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
Credit Facility [Abstract]
Credit facility fees incurred	$ 138	$ 89	$ 305	$ 179