Shareholders' Equity And Noncontrolling Interests In Partnership (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shareholders' Equity And Noncontrolling Interests In Partnership [Abstract]
Total number of Common Units outstanding (in shares)	1,703,386	1,712,353	1,728,679
Common units converted to Class A Common Shares (in shares)	8,965	4,725	6,948
LTIP Unit Issuance (in shares)	128,832