Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities:
Net Income	$ 245,283	$ 282,114
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	102,319	126,558
Amortization of debt deferred costs and intangibles, net	2,437	2,354
Non-cash lease expense	916	0
Impairment loss	74	2,398
Equity in earnings of real estate joint ventures and partnerships, net	(17,780)	(19,333)
Gain on sale of property	(143,963)	(173,077)
Distributions of income from real estate joint ventures and partnerships	14,909	12,817
Changes in accrued rent, accrued contract receivables and accounts receivable, net	14,206	3,459
Changes in unamortized lease costs and other assets, net	(8,260)	(10,697)
Changes in accounts payable, accrued expenses and other liabilities, net	(3,633)	(1,858)
Other, net	2,643	(10,133)
Net cash provided by operating activities	209,151	214,602
Cash Flows from Investing Activities:
Acquisition of real estate and land, net	(54,069)	(1,265)
Development and capital improvements	(130,857)	(112,927)
Proceeds from sale of property and real estate equity investments, net	358,531	372,439
Real estate joint ventures and partnerships - Investments	(68,200)	(25,731)
Real estate joint ventures and partnerships - Distribution of capital	2,344	4,487
Proceeds from investments	10,125	1,500
Other, net	49	5,180
Net cash provided by investing activities	117,923	243,683
Cash Flows from Financing Activities:
Proceeds from issuance of debt	0	638
Principal payments of debt	(54,226)	(255,472)
Changes in unsecured credit facilities	(5,000)	0
Proceeds from issuance of common shares of beneficial interest, net	844	6,729
Repurchase of common shares of beneficial interest, net	0	(18,564)
Common share dividends paid	(152,467)	(152,110)
Debt issuance and extinguishment costs paid	(316)	(1,189)
Distributions to noncontrolling interests	(3,807)	(15,063)
Contributions from noncontrolling interests	326	1,324
Other, net	(1,885)	869
Net cash used in financing activities	(216,531)	(432,838)
Net increase in cash, cash equivalents and restricted cash equivalents	110,543	25,447
Cash, cash equivalents and restricted cash equivalents at January 1	76,137	21,334
Cash, cash equivalents and restricted cash equivalents at September 30	186,680	46,781
Cash paid for interest (net of amount capitalized of $9,897 and $5,387, respectively)	45,757	53,890
Cash paid for income taxes	1,456	1,515
Cash paid for amounts included in operating lease liabilities	$ 2,215	$ 0