Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details)
3 Months Ended
Mar. 31, 2017
shares
Noncontrolling Interests In Subsidiaries [Abstract]  
Balance, Beginning, Common Units 10,488,105
Redemption of common units for shares of common stock (148,661)
Balance, Ending, Common Units 10,339,444
Balance, Beginning, LTIP Units 657,373
Cancellation of units (4,819)
Balance, Ending, LTIP Units 652,554