Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Investment in Real Estate:
Land	$ 529,369	$ 485,790
Buildings and Improvements	2,032,363	1,843,134
Construction in Progress	14,670	2,672
Less: Accumulated Depreciation	(551,804)	(443,912)
Net Investment in Real Estate	2,024,598	1,887,684
Real Estate and Other Assets Held for Sale, Net of Accumulated Depreciation and Amortization of $55,237 and $148,407	145,697	344,353
Investments in and Advances to Other Real Estate Partnerships	185,196	252,541
Cash and Cash Equivalents	44,835	22,484
Restricted Cash	0	105
Tenant Accounts Receivable, Net	3,128	2,602
Investments in Joint Ventures	1,492	2,451
Deferred Rent Receivable, Net	40,404	32,383
Deferred Financing Costs, Net	12,123	14,492
Deferred Leasing Intangibles, Net	34,479	33,639
Prepaid Expenses and Other Assets, Net	111,684	119,052
Total Assets	2,603,636	2,711,786
Indebtedness:
Mortgage and Other Loans Payable, Net	588,969	431,284
Senior Unsecured Notes, Net	657,519	879,529
Unsecured Credit Facility	161,000	376,184
Mortgage Loan Payable on Real Estate Held for Sale, Net, Inclusive of $0 and $6 of Accrued Interest	0	1,014
Accounts Payable, Accrued Expenses and Other Liabilities, Net	72,420	79,949
Deferred Leasing Intangibles, Net	14,602	16,145
Rents Received in Advance and Security Deposits	23,370	24,469
Leasing Intangibles Held for Sale, Net of Accumulated Amortization of $811 and $2,642	994	1,909
Total Liabilities	1,518,874	1,810,483
Commitments and Contingencies
Partners' Capital:
General Partner Preferred Units (1,550 units issued and outstanding) with a liquidation preference of $275,000	266,211	266,211
General Partner Units (86,622,563 and 68,841,296 units issued and outstanding)	741,205	558,496
Limited Partners' Units (5,262,533 and 5,363,151 units issued and outstanding)	90,725	93,100
Accumulated Other Comprehensive Loss	(13,379)	(16,504)
Total Partners' Capital	1,084,762	901,303
Total Liabilities and Partners' Capital	$ 2,603,636	$ 2,711,786