Earnings Per Share (Schedule Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income	$ 48,059	$ 10,859	$ 97,798	$ 67,300
Less: Preferred share dividends	(2,011)	(2,011)	(4,021)	(4,021)
Less: Income from operations attributable to noncontrolling interests	(1,855)	(352)	(3,358)	(2,030)
Less: Earnings allocated to unvested shares	(298)	(249)	(592)	(495)
Net income available for common shareholders, basic and diluted	$ 43,895	$ 8,247	$ 89,827	$ 60,754
Weighted Average Number of Shares Outstanding, Basic	77,474	75,394	77,160	75,377
Weighted Average Number Diluted Shares Outstanding Adjustment	31	0	2	0
Weighted average number of common shares	77,505	75,394	77,162	75,377
Net income available for common shareholders	$ 0.57	$ 0.11	$ 1.16	$ 0.81
Net income available for common shareholders	$ 0.57	$ 0.11	$ 1.16	$ 0.81