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CONSOLIDATED BALANCE SHEETS (Parenthetical)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEETS
Partners' Capital, units outstanding	130,040	130,444	131,398	131,484

- Definition

The number of each class of partnership units outstanding at the balance sheet date. Units represent shares of ownership of the general, limited, and preferred partners.

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