CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 26,079	$ 100,030
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on disposition of properties	0	(81,965)
Depreciation and amortization	50,593	31,527
Distributions of operating income from unconsolidated affiliates	2,851	2,974
Equity in earnings and gains of unconsolidated affiliates	(17,043)	(3,694)
Stock compensation expense	7,002	4,150
Amortization of financing costs	2,504	1,192
Other, net	(7,625)	(3,812)
Changes in assets and liabilities:
Other liabilities	(820)	(9,144)
Prepaid expenses and other assets	(3,417)	(4,546)
Rents receivable, net	(3,837)	(886)
Restricted cash	(1,300)	5,139
Accounts payable and accrued expenses	5,164	1,794
Net cash provided by operating activities	60,151	42,759
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of real estate	(77,785)	(18,537)
Development and property improvement costs	(46,303)	(55,890)
Issuance of or advances on notes receivable	(10,300)	(136,803)
Proceeds from the disposition of properties	0	150,379
Investments in and advances to unconsolidated affiliates	(4,262)	(63,034)
Return of capital from unconsolidated affiliates	10,124	35,608
Proceeds from notes receivable	12,000	24,500
Deposits for properties under contract	(1,000)	(17,500)
Proceeds from disposition of properties of unconsolidated affiliates	25,735	0
Payment of deferred leasing costs	(3,894)	(2,915)
Change in control of previously consolidated affiliate	0	(2,578)
Net cash used in investing activities	(95,685)	(86,770)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal payments on mortgage and other notes	(31,901)	(275,620)
Principal payments on unsecured debt	(130,716)	(471,500)
Proceeds received on mortgage and other notes	98,528	22,371
Proceeds from unsecured debt	119,400	608,515
Proceeds from issuance of Common Shares, net of issuance costs of $0 and $1,654 respectively	0	141,349
Capital contributions from noncontrolling interests	20,505	157,409
Distributions to noncontrolling interests	(8,452)	(71,432)
Dividends paid to Common Shareholders	(56,019)	(52,980)
Deferred financing and other costs	(4,067)	(3,024)
Loan proceeds held as restricted cash	(107)	0
Net cash provided by financing activities	7,171	55,088
(Decrease) increase in cash and cash equivalents	(28,363)	11,077
Cash and cash equivalents, beginning of the period	71,805	72,776
Cash and cash equivalents, end of the period	43,442	83,853
Supplemental disclosure of cash flow information
Cash paid during the period for interest, net of capitalized interest of $9,666 and $9,771, respectively	23,343	19,246
Cash paid for income taxes, net of (refunds)	138	(1,267)
Supplemental disclosure of non-cash investing activities
Acquisition of real estate through assumption of debt	0	1,463
Acquisition of real estate through issuance of OP Units	0	29,336
Acquisition of capital lease obligation	0	76,461
Assumption of accounts payable and accrued expenses through acquisition of real estate	(1,927)	0
Acquisition of real estate through conversion of notes receivable	9,142	0
Acquisition of undivided interest in a property through conversion of notes receivable	16,005	0
Change in control of previously consolidated investment
Real estate, net	0	90,559
Investments in and advances to unconsolidated affiliates	0	(21,421)
Other assets and liabilities	0	3,997
Noncontrolling interest	0	(75,713)
Cash removed in de-consolidation of previously consolidated investment	$ 0	$ (2,578)