Consolidated Statement Of Operations (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Potentially dilutive securities that have been excluded from earnings per share:
Share Based Payments	$ 9,746	$ 9,678	$ 7,590
Potentially Dilutive Securities Excluded from the Denominator	6,968,035	10,695,345	12,336,940
Common Units of Limited Partnership Interest [Member]
Potentially dilutive securities that have been excluded from earnings per share:
Potentially Dilutive Securities Excluded from the Denominator	6,968,035	7,208,123	7,295,112
Unvested Stock Awards Outstanding [Member]
Potentially dilutive securities that have been excluded from earnings per share:
Potentially Dilutive Securities Excluded from the Denominator		433,097	584,216
Contingently Issuable Share Awards [Member]
Potentially dilutive securities that have been excluded from earnings per share:
Potentially Dilutive Securities Excluded from the Denominator		2,778,545	2,097,456
Options To Acquire Common Shares Outstanding [Member]
Potentially dilutive securities that have been excluded from earnings per share:
Potentially Dilutive Securities Excluded from the Denominator		275,580	2,360,156