Earnings Per Share (Schedule Of Anti-Dilutive Securities Of Common Shares) (Details) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	3,423		2,774		3,423		3,495
Share Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	1,924	[1]	1,219	[1]	1,924	[1]	1,939	[1]
Operating Partnership Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive securities	1,499		1,555		1,499		1,556

[1] Exclusion results as exercise prices were greater than the average market price for each respective period.