Partners' Capital of the Operating Partnership Ownership Interest (Tables)

9 Months Ended

Sep. 30, 2013

Noncontrolling Interest [Abstract]

Redeemable Noncontrolling Interest

The following table sets forth the number of common units held by the Company and the number of common units held by non-affiliate investors and certain of our executive officers and directors in the form of noncontrolling common units as well as the ownership interest held on each respective date:

	September 30, 2013		December 31, 2012		September 30, 2012
Company owned common units in the Operating Partnership	82,113,491		74,926,981		74,692,939
Company owned general partnership interest	97.8	%	97.6	%	97.6	%
Noncontrolling common units of the Operating Partnership	1,821,503		1,826,503		1,826,503
Ownership interest of noncontrolling interest	2.2	%	2.4	%	2.4	%