Schedule III - Real Estate And Accumulated Depreciation (Reconciliation Of Real Estate and Accumulated Depreciation) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Real Estate
Balance at beginning of year		$ 2,206,701	$ 2,159,282
Additions during the year	$ 285,141	22,163	122,708
Dispositions/Deconsolidation of consolidated joint venture during the year	(136,480)	0	(75,289)
Total Real Estate	2,159,282	2,228,864	2,206,701
Reconciliation of Accumulated Depreciation
Balance at beginning of year		277,580	238,213
Depreciation for year	50,111	62,919	55,496
Accumulated depreciation on assets sold	(34,410)	0	(16,129)
Balance at the end of year	$ 238,213	$ 340,499	$ 277,580