CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Investment in Real Estate:
Land	$ 618,830	$ 598,404
Buildings and Improvements	2,143,136	2,146,375
Construction in Progress	25,025	19,228
Less: Accumulated Depreciation	(652,845)	(639,481)
Net Investment in Real Estate	2,134,146	2,124,526
Real Estate and Other Assets Held for Sale, Net of Accumulated Depreciation and Amortization of $1,435 and $3,050	2,085	6,765
Investments in and Advances to Other Real Estate Partnerships	189,886	178,104
Cash and Cash Equivalents	4,077	4,357
Tenant Accounts Receivable, Net	3,736	3,867
Investments in Joint Ventures	1,079	1,012
Deferred Rent Receivable, Net	48,948	47,930
Deferred Financing Costs, Net	9,058	10,948
Deferred Leasing Intangibles, Net	24,945	29,374
Prepaid Expenses and Other Assets, Net	97,255	96,999
Total Assets	2,515,215	2,503,882
Indebtedness:
Mortgage Loans Payable, Net	631,880	656,329
Senior Unsecured Notes, Net	445,925	474,150
Unsecured Credit Facility	108,000	98,000
Accounts Payable, Accrued Expenses and Other Liabilities	63,303	78,876
Deferred Leasing Intangibles, Net	12,337	13,597
Rents Received in Advance and Security Deposits	24,698	27,327
Distributions Payable	11,801	452
Total Liabilities	1,297,944	1,348,731
Commitments and Contingencies	0	0
Partners’ Capital:
General Partner Preferred Units	121,492	217,971
General Partner Units (109,922,433 and 98,767,913 units outstanding)	1,017,659	859,727
Limited Partners Units (4,617,313 and 4,702,341 units outstanding)	82,711	84,282
Accumulated Other Comprehensive Loss	(4,591)	(6,829)
Total Partners’ Capital	1,217,271	1,155,151
Total Liabilities and Partners’ Capital	$ 2,515,215	$ 2,503,882