Senior Notes (Schedule Of Interest Expense Incurred In Connection With Senior Notes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Senior Notes [Abstract]
Interest expense incurred	$ 4,868	$ 4,741	$ 9,736	$ 8,129