Related Party Transactions: (Tables)

12 Months Ended

Dec. 31, 2012

Related Party Transactions:

Schedule of fees charged to unconsolidated joint ventures

	2012		2011		2010
Management Fees	$	24,007	$	26,838	$	26,781
Development and Leasing Fees		13,165		9,955		11,488
	$	37,172	$	36,793	$	38,269