Acquired Intangible Assets And Liabilities (Tables)

3 Months Ended

Mar. 31, 2012

Finite-Lived Intangible Assets [Line Items]

Summary Of Acquired Intangible Assets

	Balance as of
(Amounts in thousands)	March 31, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	569,669		$	545,409
Accumulated amortization		(325,041	)		(312,499	)
Net	$	244,628		$	232,910
Acquired above-market lease value:
Gross amount	$	87,980		$	87,800
Accumulated amortization		(60,385	)		(58,099	)
Net	$	27,595		$	29,701
Acquired below-market lease value:
Gross amount	$	228,490		$	201,275
Accumulated amortization		(120,220	)		(115,456	)
Net	$	108,270		$	85,819

Acquired Below-Market Lease Value [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	11,684
2014		9,852
2015		8,968
2016		8,088
2017		7,160

Acquired In Place Lease Value [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	44,791
2014		39,594
2015		31,370
2016		29,134
2017		14,858