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Noncontrolling Interests (Details) (Textual) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Noncontrolling Interests (Textual) [Abstract]
Percentage of noncontrolling interests based on total shares	100.00%
Percentage of noncontrolling interests based on weighted average shares	33.00%
Operating Partnership issued in exchange for certain properties	$ 4.0
Number of limited partnership units related to redemption requests	11,907
Redemption value of limited partnership units	$ 0.1
Redemption, percentage on contributed value	95.30%

Represents a sale by the parent of a portion of its equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The sale of the equity interest represented by this element does not result in a loss of control by the parent.

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