Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015
Cash Flows from Operating Activities:
Net Income	$ 146,318		$ 87,008
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	77,097		72,602
Amortization of debt deferred costs and intangibles, net	1,305		1,310
Impairment loss	43		153
Equity in earnings of real estate joint ventures and partnerships, net	(10,738)		(8,584)
Gain on sale and acquisition of real estate joint venture and partnership interests	(37,392)		(879)
Gain on sale of property	(46,190)		(30,685)
Distributions of income from real estate joint ventures and partnerships	591		1,887
Changes in accrued rent and accounts receivable, net	2,555		2,956
Changes in unamortized lease costs and other assets, net	(10,159)		(8,660)
Changes in accounts payable, accrued expenses and other liabilities, net	(5,090)		(7,526)
Other, net	(567)		10,161
Net cash provided by operating activities	117,773		119,743
Cash Flows from Investing Activities:
Acquisition of real estate and land	(92,071)		(124,914)
Development and capital improvements	(53,441)		(38,505)
Proceeds from sale of property and real estate equity investments	108,782		48,051
Change in restricted deposits and mortgage escrows	(5,348)		68,520
Real estate joint ventures and partnerships - Investments	(42,025)		(30,053)
Real estate joint ventures and partnerships - Distribution of capital	34,224		22,653
Purchase of investments	(3,247)		0
Proceeds from investments	750		1,000
Other, net	2,518		(489)
Net cash used in investing activities	(49,858)		(53,737)
Cash Flows from Financing Activities:
Proceeds from issuance of debt	2,111		448,083
Principal payments of debt	(58,275)		(201,845)
Changes in unsecured credit facilities	(51,500)		(116,000)
Proceeds from issuance of common shares of beneficial interest, net	127,965		42,288
Redemption of preferred shares of beneficial interest	0		(150,000)
Common and preferred dividends paid	(91,675)		(89,106)
Debt issuance and extinguishment costs paid	(3,114)		(9,691)
Distributions to noncontrolling interests	(3,493)		(3,938)
Other, net	2,427		4,313
Net cash used in financing activities	(75,554)		(75,896)
Net decrease in cash and cash equivalents	(7,639)		(9,890)
Cash and cash equivalents at January 1	22,168	[1]	23,189
Cash and cash equivalents at June 30	14,529	[1]	13,299
Interest paid during the period (net of amount capitalized of $1,137 and $1,673, respectively)	40,413		38,999
Income taxes paid during the period	$ 925		$ 1,499

[1] * Consolidated variable interest entities' assets and debt included in the above balances (see Note 15):