CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 89,936	$ 53,715	$ 50,667
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	38,769	33,683	34,499
Amortization of financing costs	3,569	3,918	6,054
Gain from bargain purchase	0	0	(33,805)
Gain on sale of property	(71,203)	(46,830)	0
Loss (gain) on debt extinguishment	2,739	(1,268)	0
Gain on involuntary conversion of asset	(2,368)	0	0
Reserve for notes receivable	405	0	0
Impairment of asset	0	6,925	0
Amortization of discount on convertible debt	0	829	1,042
Non-cash accretion of notes receivable	(453)	(786)	(6,164)
Share compensation expense	4,021	4,299	4,104
Equity in earnings of unconsolidated affiliates	(1,579)	(1,555)	(10,971)
Distributions of operating income from unconsolidated affiliates	3,733	5,515	12,124
Other, net	731	724	4,237
Changes in assets and liabilities
Cash in escrow	2,035	7,319	(20,028)
Rents receivable, net	(6,757)	(8,894)	(4,662)
Prepaid expenses and other assets	1,283	(5,906)	4,297
Accounts receivable from related parties	(250)	1,034	(2,408)
Accounts payable and accrued expenses	(5,648)	14,513	1,874
Other liabilities	709	(903)	3,517
Net cash provided by operating activities	59,672	66,332	44,377
CASH FLOWS FROM INVESTING ACTIVITIES
Redevelopment and property improvement costs	(241,894)	(116,408)	(2,849)
Redevelopment and property improvement costs	(88,787)	(65,090)	(77,671)
Deferred leasing costs	(7,275)	(6,298)	(3,904)
Insurance proceeds from involuntary conversion of asset	3,672	0	0
Investments in and advances to unconsolidated affiliates	(160,888)	(54,981)	(19,116)
Return of capital from unconsolidated affiliates	22,296	4,504	785
Proceeds from notes receivable	25,388	56,519	42,010
Issuance of notes receivable	(108,629)	(34,343)	0
Proceeds from sale of property	419,372	62,940	0
Net cash used in investing activities	(136,745)	(153,157)	(60,745)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal payments on mortgage notes	(549,095)	(161,389)	(127,823)
Proceeds received on mortgage notes	433,815	144,959	175,793
Purchase of convertible notes payable	0	(48,997)	(240)
Increase in deferred financing and other costs	(6,772)	(2,877)	(6,830)
Capital contributions from noncontrolling interests	172,228	117,945	33,556
Distributions to noncontrolling interests	(161,765)	(8,605)	(1,638)
Dividends paid to Common Shareholders	(32,143)	(29,033)	(28,909)
Proceeds from issuance of Common Shares, net of issuance costs of $762, $206 and $0, respectively	223,477	44,659	0
Repurchase and cancellation of Common Shares	(762)	(726)	(966)
Other employee and trustee stock compensation, net	91	109	209
Net cash provided by financing activities	79,074	56,045	43,152
Increase (decrease) in cash and cash equivalents	2,001	(30,780)	26,784
Cash and cash equivalents, beginning of period	89,812	120,592	93,808
Cash and cash equivalents, end of period	91,813	89,812	120,592
Supplemental disclosure of cash flow information
Cash paid during the period for interest, net of capitalized interest of $5,955, $4,850, and $2,903, respectively	32,327	32,120	31,920
Cash paid for income taxes	941	3,776	1,263
Supplemental disclosure of non-cash investing activities
Acquisition of real estate through assumption of debt	63,766	0	0
Acquisition of real estate through issuance of OP Units	2,279	0	0
Acquisition of real estate through conversion of notes receivable	14,000	0	0
Acquisition of interest in unconsolidated affiliates
Real Estate, net	0	0	(108,000)
Assumption of mortgage debt	0	0	25,990
Gain from bargain purchase	0	0	33,805
Other assets and liabilities	0	0	7,532
Investment in unconsolidated affiliates	0	0	37,824
Cash included in investment in real estate	$ 0	$ 0	$ (2,849)