Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash Flows from Operating Activities:
Net income	$ 106,032	$ 91,691
Operating distributions received from unconsolidated joint ventures	2,289	3,379
Adjustments to reconcile net income to net cash provided by operating activities:
Income attributable to noncontrolling interest- discontinued operations	366	397
Depreciation	82,660	77,804
Amortization of deferred financing costs, fair market value adjustments on notes payable, and interest rate cap agreements	4,126	1,996
Other amortization	43,316	31,964
Impairment loss	0	9,587
Accretion of notes receivable discount	(482)	(1,928)
Stock compensation expense	2,975	2,458
Equity in income of unconsolidated joint ventures	(1,032)	(2,003)
Gain on sale of real estate assets	(26,756)	0
Gain on consolidation of variable interest entity	(1,532)	0
Changes in assets and liabilities:
Increase in tenant receivables, net	(9,690)	(1,578)
Increase in restricted cash and escrows	(15,792)	(7,819)
Increase in prepaid expenses and other assets	(4,864)	(8,994)
Increase in accounts payable and accrued expenses	1,823	7,520
Decrease in deferred income	(7,250)	(624)
Net cash provided by operating activities	176,189	203,850
Cash Flows from Investing Activities:
Investments in real estate assets and related intangibles	(175,322)	(41,378)
Cash assumed upon consolidation of variable interest entity	5,063	0
Net sales proceeds from wholly-owned properties	68,041	0
Net sales proceeds received from unconsolidated joint ventures	3,036	0
Investments in unconsolidated joint ventures	(151)	(29)
Deferred lease costs paid	(27,409)	(10,524)
Net cash used in investing activities	(126,742)	(51,931)
Cash Flows from Financing Activities:
Deferred financing costs paid	(1,401)	(669)
Proceeds from line of credit and notes payable	469,000	0
Repayments of line of credit and notes payable	(392,000)	(114,000)
Net proceeds from issuance of common stock	0	185,763
Redemption of fractional shares of common stock	0	(2,918)
Dividends paid and discount on dividend reinvestments	(165,636)	(162,560)
Net cash used in financing activities	(90,037)	(94,384)
Net (decrease)/increase in cash and cash equivalents	(40,590)	57,535
Cash and cash equivalents, beginning of period	56,718	10,004
Cash and cash equivalents, end of period	16,128	67,539
Supplemental Disclosures of Significant Noncash Investing and Financing Activities:
Change in accrued offering costs	479	1,370
Accrued capital expenditures and deferred lease costs	9,395	1,249
Net assets assumed upon consolidation of variable interest entity, net of notes receivable previously recorded	188,283	0
Liabilities assumed upon consolidation of variable interest entity	191,814	0
Redeemable common stock	$ 0	$ 75,164