Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interests In Subsidiaries [Abstract]
Balance, Beginning	11,083,876	11,864,775	12,141,836
Redemption of common units for shares of common stock	(567,032)	(780,899)	(277,061)
Balance, Ending	10,516,844	11,083,876	11,864,775