Commitment and Contingencies (Tables)

9 Months Ended

Sep. 30, 2011

Commitments and Contingencies [Abstract]

Summary of the Company's real estate commitments

	Number of		Costs Incurred		Expected Costs		Ownership
	Properties		to Date		to Complete		Stake
Wholly owned — under development		6	$	192,930	$	331,345		100	%
Joint ventures:
Consolidated Joint Ventures		1	$	12,878	$	33,122		90	%
Unconsolidated Joint Ventures		3		35,991		144,909		95	%
			$	241,799	$	509,376