Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2012

Related Party Transactions [Abstract]

Schedule of Fees Earned from Related Parties

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
Management fees	$	2,725	$	2,646	$	5,455	$	4,623
Leasing fees	940		997		2,234		2,801
Construction and development fees	912		814		1,755		2,396